/* ================================================================
   AQUASENTINEL — style.css
   Part 1: Design Tokens · Reset · Buttons · Nav · Hero
   ================================================================ */

/* ── 1. DESIGN TOKENS ── */
:root {
  --clr-deep:      #030C18;
  --clr-dark:      #061525;
  --clr-surface:   #0D1E34;
  --clr-surface-2: #132840;
  --clr-border:    #1C3A58;
  --clr-border-2:  #274E70;

  --clr-accent:      #00E5CC;
  --clr-accent-dim:  rgba(0, 229, 204, 0.10);
  --clr-accent-mid:  rgba(0, 229, 204, 0.20);
  --clr-accent-glow: rgba(0, 229, 204, 0.30);

  --clr-blue:     #0A8EFF;
  --clr-blue-dim: rgba(10, 142, 255, 0.12);

  --clr-text:  #E8F4FC;
  --clr-muted: #6BA3C0;
  --clr-dim:   #3A6480;

  --ff-display: 'Space Grotesk', sans-serif;
  --ff-body:    'Inter', sans-serif;
  --ff-mono:    'JetBrains Mono', monospace;

  --fs-2xs:  clamp(0.6rem,  1vw,    0.65rem);
  --fs-xs:   clamp(0.68rem, 1.2vw,  0.72rem);
  --fs-sm:   clamp(0.78rem, 1.4vw,  0.82rem);
  --fs-base: clamp(0.9rem,  1.8vw,  1rem);
  --fs-md:   clamp(1rem,    2vw,    1.125rem);
  --fs-lg:   clamp(1.1rem,  2.5vw,  1.375rem);
  --fs-xl:   clamp(1.25rem, 3vw,    1.6rem);
  --fs-2xl:  clamp(1.5rem,  4vw,    2rem);
  --fs-3xl:  clamp(2rem,    5.5vw,  3rem);
  --fs-hero: clamp(3.2rem,  9.5vw,  8rem);

  --sp-1:  0.25rem;  --sp-2:  0.5rem;
  --sp-3:  0.75rem;  --sp-4:  1rem;
  --sp-5:  1.25rem;  --sp-6:  1.5rem;
  --sp-8:  2rem;     --sp-10: 2.5rem;
  --sp-12: 3rem;     --sp-16: 4rem;
  --sp-20: 5rem;     --sp-24: 6rem;
  --sp-32: 8rem;

  --r-sm:   4px;  --r-md:   8px;
  --r-lg:   14px; --r-xl:   20px;
  --r-full: 9999px;

  --sh-glow: 0 0 20px var(--clr-accent-glow), 0 0 48px var(--clr-accent-dim);

  --tx-fast: 0.14s ease;
  --tx-base: 0.24s ease;
  --tx-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --max-w:       1280px;
  --nav-h:       72px;
  --section-gap: clamp(2rem, 4vw, 4rem);
}

/* ── 2. RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--clr-text);
  background-color: var(--clr-deep);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--clr-accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

img, video, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul[role="list"] { list-style: none; }

/* ── 3. LAYOUT UTILITIES ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--sp-8);
}

.section { padding-block: var(--section-gap); }

@media (max-width: 768px) {
  .container { padding-inline: var(--sp-5); }
}

/* ── 4. BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.65rem var(--sp-6);
  border-radius: var(--r-full);
  border: none;
  cursor: pointer;
  transition: all var(--tx-base);
  white-space: nowrap;
  position: relative;
  text-decoration: none;
  line-height: 1;
}

.btn--primary {
  background: var(--clr-accent);
  color: var(--clr-deep);
}
.btn--primary:hover {
  background: #1AECDA;
  box-shadow: var(--sh-glow);
  transform: translateY(-2px);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--clr-text);
  border: 1.5px solid var(--clr-border-2);
}
.btn--ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
}

.btn--nav {
  background: var(--clr-accent-dim);
  color: var(--clr-accent);
  border: 1.5px solid var(--clr-accent-mid);
  padding: 0.5rem var(--sp-4);
  font-size: var(--fs-2xs);
  gap: var(--sp-2);
}
.btn--nav:hover {
  background: var(--clr-accent);
  color: var(--clr-deep);
  box-shadow: 0 0 16px var(--clr-accent-glow);
}

.btn__arrow {
  width: 16px; height: 16px;
  flex-shrink: 0;
  transition: transform var(--tx-base);
}
.btn--primary:hover .btn__arrow { transform: translateX(3px); }

.btn__pulse {
  position: relative;
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--clr-accent);
  border-radius: var(--r-full);
  flex-shrink: 0;
}
.btn__pulse::before {
  content: '';
  position: absolute;
  inset: -3px;
  border: 1.5px solid var(--clr-accent);
  border-radius: var(--r-full);
  animation: pulse-ring 2.2s ease-out infinite;
}

@keyframes pulse-ring {
  0%   { transform: scale(0.7); opacity: 1; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* ── 5. NAVIGATION ── */
.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 900;
  height: var(--nav-h);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--tx-slow), border-color var(--tx-slow), box-shadow var(--tx-slow);
}

.nav.nav--scrolled {
  background: rgba(3, 12, 24, 0.86);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--clr-border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}

.nav__container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--sp-8);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}
.nav__logo-icon {
  width: 34px; height: 34px;
  color: var(--clr-accent);
  flex-shrink: 0;
}
.nav__logo-text {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 300;
  letter-spacing: -0.015em;
  color: var(--clr-text);
  line-height: 1;
}
.nav__logo-text strong { font-weight: 700; }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex: 1;
  justify-content: center;
}

.nav__link {
  position: relative;
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--clr-muted);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-sm);
  transition: color var(--tx-fast);
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 1px;
  left: var(--sp-3); right: var(--sp-3);
  height: 1.5px;
  background: var(--clr-accent);
  transform: scaleX(0);
  transform-origin: center;
  border-radius: var(--r-full);
  transition: transform var(--tx-base);
}
.nav__link:hover { color: var(--clr-text); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--clr-text); }

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
  border-radius: var(--r-sm);
  margin-left: auto;
}
.nav__hamburger-line {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-muted);
  border-radius: var(--r-full);
  transition: transform var(--tx-base), opacity var(--tx-base), background var(--tx-base);
  transform-origin: center;
}
.nav__hamburger.is-open .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--clr-accent);
}
.nav__hamburger.is-open .nav__hamburger-line:nth-child(2) {
  opacity: 0; transform: scaleX(0);
}
.nav__hamburger.is-open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--clr-accent);
}

.nav__mobile {
  display: none;
  position: absolute;
  top: var(--nav-h);
  inset-inline: 0;
  background: rgba(3, 12, 24, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  padding: var(--sp-6) var(--sp-6) var(--sp-8);
}
.nav__mobile.is-open {
  display: block;
  animation: mobileMenuIn 0.22s ease forwards;
}
@keyframes mobileMenuIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--sp-6);
}
.nav__mobile-link {
  display: block;
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  color: var(--clr-muted);
  padding: var(--sp-3) var(--sp-2);
  border-bottom: 1px solid var(--clr-border);
  transition: color var(--tx-fast), padding-left var(--tx-base);
}
.nav__mobile-link:hover { color: var(--clr-text); padding-left: var(--sp-4); }
.nav__mobile-cta { display: flex; justify-content: center; width: 100%; }

@media (max-width: 920px) {
  .nav__links  { display: none; }
  .btn--nav    { display: none; }
  .nav__hamburger { display: flex; }
  .nav__container { padding-inline: var(--sp-5); gap: var(--sp-4); }
}

/* ── 6. HERO ── */
.hero {
  position: relative;
  width: 100%;
  min-height: 100svh;
  min-height: 640px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--clr-deep);
  isolation: isolate;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  opacity: 0.65;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 85% 70% at 50% 50%,
      transparent 0%,
      rgba(3,12,24,0.55) 65%,
      var(--clr-deep) 100%),
    linear-gradient(to bottom, transparent 60%, var(--clr-deep) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-inline: var(--sp-8);
  max-width: 960px;
  padding-top: var(--nav-h);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: var(--sp-2) var(--sp-5);
  margin-bottom: var(--sp-8);
  animation: fadeSlideDown 0.7s ease 0.2s both;
}

.hero__eyebrow-dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--clr-accent);
  border-radius: var(--r-full);
  flex-shrink: 0;
  animation: blinkDot 2.8s ease-in-out infinite;
}
@keyframes blinkDot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.25; }
}

.hero__title {
  font-family: var(--ff-display);
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.88;
  color: var(--clr-text);
  margin-bottom: var(--sp-6);
  animation: fadeSlideUp 0.9s ease 0.38s both;
}
.hero__title-accent {
  color: var(--clr-accent);
  text-shadow:
    0 0 40px rgba(0,229,204,0.35),
    0 0 90px rgba(0,229,204,0.15);
}

.hero__tagline {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 300;
  color: var(--clr-muted);
  line-height: 1.55;
  margin-bottom: var(--sp-10);
  animation: fadeSlideUp 0.9s ease 0.52s both;
}

.hero__metrics {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
  padding: var(--sp-4) var(--sp-8);
  background: rgba(13,30,52,0.55);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  margin-bottom: var(--sp-10);
  animation: fadeSlideUp 0.9s ease 0.66s both;
}
.hero__metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
}
.hero__metric-value {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xl);
  font-weight: 500;
  color: var(--clr-text);
  line-height: 1;
  white-space: nowrap;
}
.hero__metric-label {
  font-family: var(--ff-body);
  font-size: var(--fs-2xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-dim);
  white-space: nowrap;
}
.hero__metric-sep {
  width: 1px; height: 38px;
  background: var(--clr-border);
  flex-shrink: 0;
}

.hero__ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
  animation: fadeSlideUp 0.9s ease 0.8s both;
}

.hero__scroll {
  position: absolute;
  bottom: var(--sp-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  z-index: 2;
  animation: fadeIn 1s ease 1.6s both;
}
.hero__scroll-track {
  width: 1.5px; height: 42px;
  background: var(--clr-border);
  border-radius: var(--r-full);
  overflow: hidden;
  position: relative;
}
.hero__scroll-thumb {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 50%;
  background: linear-gradient(to bottom, transparent, var(--clr-accent));
  border-radius: var(--r-full);
  animation: scrollThumb 2s ease-in-out infinite;
}
@keyframes scrollThumb {
  0%   { top: -50%; opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}
.hero__scroll-label {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-dim);
}

@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@media (max-width: 768px) {
  .hero__content { padding-inline: var(--sp-5); }
  .hero__metrics { gap: var(--sp-5); padding: var(--sp-4) var(--sp-6); }
  .hero__metric-value { font-size: var(--fs-xl); }
  .hero__ctas { flex-direction: column; align-items: stretch; }
  .hero__ctas .btn { justify-content: center; }
}

@media (max-width: 520px) {
  .hero__metrics { flex-wrap: wrap; gap: var(--sp-4); justify-content: center; }
  .hero__metric-sep { display: none; }
  .hero__metric { min-width: 90px; }
}

/* ── 7. SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; background: var(--clr-deep); }
::-webkit-scrollbar-thumb { background: var(--clr-border-2); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover { background: var(--clr-muted); }
/* ================================================================
   PART 2 — AI WATER RISK PREDICTOR
   Append to the END of style.css
   ================================================================ */

/* ── Shared section typography helpers ── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: var(--sp-2) var(--sp-5);
  margin-bottom: var(--sp-6);
}

.section-label__dot {
  width: 6px; height: 6px;
  background: var(--clr-accent);
  border-radius: var(--r-full);
  display: inline-block;
  flex-shrink: 0;
}

.section-title {
  font-family: var(--ff-display);
  font-size: var(--fs-3xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--clr-text);
  margin-bottom: var(--sp-4);
  line-height: 1.1;
}

.section-subtitle {
  font-family: var(--ff-body);
  font-size: var(--fs-md);
  color: var(--clr-muted);
  max-width: 680px;
  line-height: 1.75;
}

/* ── Glass card base (shared across all cards) ── */
.glass-card {
  background: rgba(13, 30, 52, 0.55);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-xl);
}

/* ── Predictor section ── */
.predictor__header {
  margin-bottom: var(--sp-6);
}

.predictor__layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: var(--sp-8);
  align-items: start;
}

/* ── Form card (left column) ── */
.pred-card {
  padding: var(--sp-6);
}

.pred-card__hd {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--clr-border);
}

.pred-card__icon {
  width: 42px; height: 42px;
  color: var(--clr-accent);
  flex-shrink: 0;
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  padding: 9px;
}

.pred-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-1);
}

.pred-card__sub {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
}

/* ── Form field groups ── */
.fgroup {
  margin-bottom: var(--sp-5);
}

.flabel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-2);
  gap: var(--sp-2);
}

.flabel__badge {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  font-weight: 500;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: 2px 8px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}

.finput-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.finput-unit {
  position: absolute;
  left: var(--sp-4);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--clr-accent);
  pointer-events: none;
  z-index: 1;
  letter-spacing: 0.04em;
}

.finput {
  width: 100%;
  background: rgba(3, 12, 24, 0.65);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-md);
  padding: 0.75rem var(--sp-4) 0.75rem 3.5rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-base);
  color: var(--clr-text);
  outline: none;
  transition: border-color var(--tx-base), box-shadow var(--tx-base),
              background var(--tx-base);
  -webkit-appearance: none;
  -moz-appearance: textfield;
}

.finput::placeholder { color: var(--clr-dim); }

.finput:focus {
  border-color: var(--clr-accent);
  background: rgba(0, 229, 204, 0.04);
  box-shadow: 0 0 0 3px var(--clr-accent-dim),
              0 0 16px var(--clr-accent-dim);
}

.fgroup.is-error .finput {
  border-color: #FF4D4D;
  box-shadow: 0 0 0 3px rgba(255, 77, 77, 0.1);
}

/* Remove browser number arrows */
.finput::-webkit-outer-spin-button,
.finput::-webkit-inner-spin-button { -webkit-appearance: none; }

.fhint {
  display: block;
  margin-top: var(--sp-1);
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  line-height: 1.4;
}

.ferror {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: #FF4D4D;
  min-height: 1.2em;
}

/* ── Analyze button ── */
.btn-analyze {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  width: 100%;
  padding: var(--sp-4) var(--sp-8);
  margin-top: var(--sp-8);
  background: var(--clr-accent);
  color: var(--clr-deep);
  border: none;
  border-radius: var(--r-full);
  cursor: pointer;
  font-family: var(--ff-display);
  font-size: var(--fs-base);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  overflow: hidden;
  transition: transform var(--tx-base), box-shadow var(--tx-base);
}

/* Animated shine overlay on hover */
.btn-analyze__shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #00E5CC 0%, #0A8EFF 100%);
  opacity: 0;
  transition: opacity var(--tx-base);
}

.btn-analyze:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px var(--clr-accent-glow),
              0 0 50px var(--clr-accent-dim);
}

.btn-analyze:hover .btn-analyze__shine { opacity: 1; }

.btn-analyze:active { transform: translateY(0); }

.btn-analyze:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-analyze__icon {
  width: 20px; height: 20px;
  position: relative; z-index: 1;
  flex-shrink: 0;
}

.btn-analyze__label {
  position: relative; z-index: 1;
}

/* Try example link-button */
.btn-example {
  display: block;
  width: 100%;
  margin-top: var(--sp-3);
  padding: var(--sp-2) var(--sp-4);
  background: transparent;
  border: 1px dashed var(--clr-border-2);
  border-radius: var(--r-md);
  color: var(--clr-dim);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color var(--tx-fast), border-color var(--tx-fast),
              background var(--tx-fast);
  text-align: center;
}

.btn-example:hover {
  color: var(--clr-accent);
  border-color: var(--clr-accent-mid);
  background: var(--clr-accent-dim);
}

/* ─────────────────────────────────────────
   PLACEHOLDER STATE
   ───────────────────────────────────────── */
.state-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 480px;
  padding: var(--sp-10) var(--sp-8);
  background: rgba(13, 30, 52, 0.30);
  border: 1px dashed var(--clr-border);
  border-radius: var(--r-xl);
}

/* Animated icon: expanding sonar rings */
.ph-icon {
  position: relative;
  width: 80px; height: 80px;
  margin: 0 auto var(--sp-6);
}

.ph-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid var(--clr-accent);
  animation: phRingOut 3.2s ease-out infinite;
}
.ph-ring--1 { animation-delay: 0s;    }
.ph-ring--2 { animation-delay: 1.07s; }
.ph-ring--3 { animation-delay: 2.14s; }

@keyframes phRingOut {
  0%   { width: 14px; height: 14px; opacity: 0.9; }
  100% { width: 80px; height: 80px; opacity: 0;   }
}

.ph-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--clr-accent);
  box-shadow: 0 0 14px var(--clr-accent-glow);
}

.ph-title {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-3);
}

.ph-desc {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  max-width: 320px;
  line-height: 1.65;
  margin-bottom: var(--sp-6);
}

.ph-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  text-align: left;
  width: 100%;
  max-width: 300px;
}

.ph-features li {
  position: relative;
  font-size: var(--fs-sm);
  color: var(--clr-dim);
  padding-left: var(--sp-5);
}

.ph-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-weight: 700;
}

/* ─────────────────────────────────────────
   LOADING STATE
   ───────────────────────────────────────── */
.state-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  min-height: 480px;
}

/* Sonar rings animation (matches hero canvas aesthetic) */
.ld-sonar {
  position: relative;
  width: 100px; height: 100px;
}

.ld-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1.5px solid var(--clr-accent);
  animation: ldRingPulse 2.4s ease-out infinite;
}
.ld-ring--1 { animation-delay: 0s;   }
.ld-ring--2 { animation-delay: 0.8s; }
.ld-ring--3 { animation-delay: 1.6s; }

@keyframes ldRingPulse {
  0%   { width: 14px; height: 14px; opacity: 1;   border-color: var(--clr-accent); }
  100% { width: 100px;height: 100px;opacity: 0;   border-color: var(--clr-blue);  }
}

.ld-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--clr-accent);
  box-shadow: 0 0 18px var(--clr-accent-glow);
  animation: ldCorePulse 1.2s ease-in-out infinite;
}

@keyframes ldCorePulse {
  0%, 100% { transform: translate(-50%,-50%) scale(1);   opacity: 1;   }
  50%       { transform: translate(-50%,-50%) scale(1.4); opacity: 0.65;}
}

.ld-steps {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.ld-step {
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  color: var(--clr-dim);
  line-height: 2;
  opacity: 0.35;
  transition: color var(--tx-base), opacity var(--tx-base);
}

.ld-step.is-active { color: var(--clr-accent); opacity: 1; }
.ld-step.is-done   { color: var(--clr-muted);  opacity: 0.65; }

/* ─────────────────────────────────────────
   ERROR STATE
   ───────────────────────────────────────── */
.state-error {
  text-align: center;
  padding: var(--sp-8) var(--sp-6);
}

.err-icon {
  width: 52px; height: 52px;
  color: #F5A623;
  margin: 0 auto var(--sp-4);
}

.err-title {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-3);
}

.err-body {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-5);
}

.err-score {
  display: inline-flex;
  align-items: baseline;
  gap: var(--sp-2);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-lg);
  padding: var(--sp-3) var(--sp-6);
  margin-bottom: var(--sp-4);
}

.err-score__num {
  font-family: var(--ff-mono);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--clr-accent);
  line-height: 1;
}

.err-score__den {
  font-family: var(--ff-mono);
  font-size: var(--fs-lg);
  color: var(--clr-muted);
}

.err-hint {
  display: block;
  font-size: var(--fs-sm);
  color: var(--clr-dim);
  margin-bottom: var(--sp-5);
}

.err-retry { margin: 0 auto; display: inline-flex; }

/* ─────────────────────────────────────────
   RESULTS OUTPUT
   ───────────────────────────────────────── */
.state-results {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

/* Score ring card */
.res-card--score {
  padding: var(--sp-6);
}

.score-wrap {
  display: flex;
  gap: var(--sp-6);
  align-items: flex-start;
}

/* ── SVG Circular Score Ring ── */
.score-ring-container {
  position: relative;
  flex-shrink: 0;
  width: 140px; height: 140px;
}

.score-ring-svg {
  width: 140px; height: 140px;
}

.score-ring__track {
  fill: none;
  stroke: rgba(28, 58, 88, 0.8);
  stroke-width: 9;
}

.score-ring__fill {
  fill: none;
  stroke: var(--clr-accent);
  stroke-width: 9;
  stroke-linecap: round;
  /*
    Circumference = 2π × r = 2 × 3.14159 × 58 ≈ 364.42
    stroke-dashoffset 364.42 = empty ring (0 score)
    stroke-dashoffset 0      = full ring (100 score)
    JS sets: offset = 364.42 × (1 − score/100)
  */
  stroke-dasharray: 364.42;
  stroke-dashoffset: 364.42;
  transform: rotate(-90deg);
  transform-origin: 70px 70px;
  transition: stroke-dashoffset 1.4s cubic-bezier(0.34, 1.2, 0.64, 1),
              stroke 0.4s ease;
}

.score-ring__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.score-ring__num {
  font-family: var(--ff-mono);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1;
}

.score-ring__den {
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.2;
}

.score-ring__tag {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-dim);
}

/* ── Score info (right of ring) ── */
.score-info {
  flex: 1;
  min-width: 0;
}

.score-info__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-1);
}

.score-info__note {
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  line-height: 1.55;
  margin-bottom: var(--sp-4);
}

/* ── Risk badge ── */
.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-4);
  border-radius: var(--r-full);
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
  border: 1.5px solid transparent;
}

.risk-badge--safe {
  color: #00E5CC;
  background: rgba(0, 229, 204, 0.1);
  border-color: rgba(0, 229, 204, 0.35);
}

.risk-badge--moderate {
  color: #F5A623;
  background: rgba(245, 166, 35, 0.1);
  border-color: rgba(245, 166, 35, 0.35);
}

.risk-badge--risk {
  color: #FF4D4D;
  background: rgba(255, 77, 77, 0.1);
  border-color: rgba(255, 77, 77, 0.35);
}

.risk-badge__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* ── Per-parameter score bars ── */
.score-bars {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.sbar {
  display: grid;
  grid-template-columns: 58px 1fr 30px;
  align-items: center;
  gap: var(--sp-3);
}

.sbar__lbl {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sbar__track {
  height: 5px;
  background: rgba(28, 58, 88, 0.9);
  border-radius: var(--r-full);
  overflow: hidden;
}

.sbar__fill {
  height: 100%;
  width: 0%;
  background: var(--clr-accent);
  border-radius: var(--r-full);
  transition: width 1s cubic-bezier(0.34, 1.2, 0.64, 1);
}

.sbar__val {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  text-align: right;
}

/* ── AI text result cards ── */
.res-card {
  padding: var(--sp-5) var(--sp-6);
}

.res-card__title {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-3);
}

.res-card__body {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  line-height: 1.78;
}

/* Recommendations card — highlighted with teal tint */
.res-card--reco {
  border-color: rgba(0, 229, 204, 0.25);
  background: rgba(0, 229, 204, 0.04);
}

/* ── Suitability 2×2 grid ── */
.suit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.suit-item {
  text-align: center;
  padding: var(--sp-4) var(--sp-3);
  transition: border-color var(--tx-base), background var(--tx-base);
}

.suit-item__ico {
  font-size: 1.7rem;
  margin-bottom: var(--sp-2);
  line-height: 1;
}

.suit-item__lbl {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-bottom: var(--sp-2);
}

.suit-item__val {
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--sp-1);
}

.suit-item__note {
  font-size: var(--fs-2xs);
  color: var(--clr-dim);
  letter-spacing: 0.04em;
}

/* Suitability color states */
.suit-item.suit--safe {
  border-color: rgba(0, 229, 204, 0.4);
  background: rgba(0, 229, 204, 0.06);
}
.suit-item.suit--safe .suit-item__val { color: #00E5CC; }

.suit-item.suit--moderate {
  border-color: rgba(245, 166, 35, 0.4);
  background: rgba(245, 166, 35, 0.06);
}
.suit-item.suit--moderate .suit-item__val { color: #F5A623; }

.suit-item.suit--risk {
  border-color: rgba(255, 77, 77, 0.4);
  background: rgba(255, 77, 77, 0.06);
}
.suit-item.suit--risk .suit-item__val { color: #FF4D4D; }

/* ── Disclaimer ── */
.results-disclaimer {
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  line-height: 1.65;
  padding: var(--sp-4) var(--sp-5);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  background: rgba(13, 30, 52, 0.35);
  text-align: center;
}

/* ── Responsive ── */
@media (max-width: 1100px) {
  .predictor__layout {
    grid-template-columns: 380px 1fr;
  }
}

@media (max-width: 900px) {
  .predictor__layout {
    grid-template-columns: 1fr;
  }

  .score-wrap {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .score-info {
    width: 100%;
    text-align: left;
  }

  .risk-badge {
    display: inline-flex;
  }
}

@media (max-width: 540px) {
  .flabel {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-1);
  }

  .suit-grid {
    grid-template-columns: 1fr 1fr;
  }
}
/* ================================================================
   PART 3 — AQUASENTINEL ECOSYSTEM
   Append to the END of style.css
   ================================================================ */

/* ── Eco section wrapper ── */
.ecosystem { background: var(--clr-deep); }

/* ── Section header ── */
.eco__header {
  margin-bottom: var(--sp-8);
}

/* ── Eco block (each sub-section) ── */
.eco-block {
  margin-bottom: var(--sp-12);
}
.eco-block:last-child {
  margin-bottom: 0;
}

/* ── Block label (01, 02 …) ── */
.eco-block__label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-dim);
  border-left: 2px solid var(--clr-border-2);
  padding-left: var(--sp-4);
  margin-bottom: var(--sp-10);
}
.eco-block__label-dot {
  width: 5px; height: 5px;
  background: var(--clr-accent);
  border-radius: var(--r-full);
  display: inline-block;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════
   WEATHER CARDS
   ═══════════════════════════════════════ */
.weather-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.w-card {
  position: relative;
  padding: var(--sp-6) var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  overflow: hidden;
  transition: transform var(--tx-base), box-shadow var(--tx-base),
              border-color var(--tx-base);
}
.w-card:hover {
  transform: translateY(-3px);
  border-color: var(--clr-accent-mid);
  box-shadow: 0 8px 32px rgba(0, 229, 204, 0.10);
}

.w-card__icon {
  width: 32px; height: 32px;
  color: var(--clr-accent);
  opacity: 0.8;
  margin-bottom: var(--sp-1);
}

.w-card__body {
  display: flex;
  align-items: baseline;
  gap: var(--sp-1);
  line-height: 1;
}

.w-card__value {
  font-family: var(--ff-mono);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1;
}
.w-card__value--cond {
  font-size: var(--fs-xl);
  font-family: var(--ff-display);
  font-weight: 600;
}

.w-card__unit {
  font-family: var(--ff-mono);
  font-size: var(--fs-md);
  color: var(--clr-muted);
}

.w-card__label {
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-dim);
}

/* Shimmer loading animation */
.w-card--loading .w-card__value,
.w-card--loading .w-card__unit,
.w-card--loading .w-card__label {
  color: transparent;
  border-radius: var(--r-sm);
  background: linear-gradient(
    90deg,
    var(--clr-surface) 25%,
    var(--clr-surface-2) 50%,
    var(--clr-surface) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}
.w-card--loading .w-card__icon { opacity: 0.25; }

@keyframes shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}

.w-card__shimmer { display: none; }

/* Weather error */
.weather-error {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  border: 1px dashed var(--clr-border);
  border-radius: var(--r-md);
  color: var(--clr-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-6);
}
.weather-error svg {
  width: 20px; height: 20px;
  color: #F5A623;
  flex-shrink: 0;
}

/* ── Environmental Context card ── */
.env-context {
  display: flex;
  gap: var(--sp-5);
  align-items: flex-start;
  padding: var(--sp-6);
  border-color: var(--clr-accent-mid);
  background: rgba(0, 229, 204, 0.03);
  transition: border-color var(--tx-base);
}

.env-context__icon {
  width: 40px; height: 40px;
  color: var(--clr-accent);
  flex-shrink: 0;
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  padding: 9px;
}

.env-context__body { flex: 1; min-width: 0; }

.env-context__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-2);
}

.env-context__text {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  line-height: 1.75;
  font-style: italic;
}

/* ═══════════════════════════════════════
   TECHNOLOGY CARDS
   ═══════════════════════════════════════ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.tech-card {
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition: transform var(--tx-base), border-color var(--tx-base),
              box-shadow var(--tx-base), background var(--tx-base);
  cursor: default;
}
.tech-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-accent-mid);
  box-shadow: 0 12px 40px rgba(0, 229, 204, 0.10);
  background: rgba(13, 30, 52, 0.75);
}

.tech-card__icon {
  width: 44px; height: 44px;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  padding: 10px;
  flex-shrink: 0;
  transition: background var(--tx-base), box-shadow var(--tx-base);
}
.tech-card:hover .tech-card__icon {
  background: var(--clr-accent-mid);
  box-shadow: 0 0 16px var(--clr-accent-glow);
}

.tech-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.2;
}

.tech-card__desc {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.7;
  flex: 1;
}

.tech-card__tag {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: 3px 10px;
  align-self: flex-start;
  margin-top: auto;
}

/* ═══════════════════════════════════════
   SYSTEM WORKFLOW
   ═══════════════════════════════════════ */
.workflow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.wf-step {
  width: 100%;
  max-width: 560px;
  padding: var(--sp-5) var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  transition: transform var(--tx-base), border-color var(--tx-base),
              box-shadow var(--tx-base);
  position: relative;
}
.wf-step:hover {
  transform: translateX(6px);
  border-color: var(--clr-accent-mid);
  box-shadow: 0 4px 24px rgba(0, 229, 204, 0.10);
}

/* Final step — accent highlight */
.wf-step--final {
  border-color: rgba(0, 229, 204, 0.35);
  background: rgba(0, 229, 204, 0.04);
}
.wf-step--final .wf-step__num { color: var(--clr-accent); }

.wf-step__num {
  font-family: var(--ff-mono);
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clr-dim);
  flex-shrink: 0;
  min-width: 20px;
}

.wf-step__icon {
  width: 36px; height: 36px;
  color: var(--clr-accent);
  flex-shrink: 0;
}

.wf-step__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  flex-shrink: 0;
  min-width: 180px;
}

.wf-step__desc {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.55;
}

/* Animated connecting arrow */
.wf-arrow {
  width: 24px; height: 24px;
  color: var(--clr-accent);
  opacity: 0.5;
  flex-shrink: 0;
  margin: var(--sp-1) 0;
  animation: wfPulse 2s ease-in-out infinite;
}
@keyframes wfPulse {
  0%, 100% { opacity: 0.35; transform: translateY(0); }
  50%       { opacity: 0.75; transform: translateY(3px); }
}

/* ═══════════════════════════════════════
   WHY DIFFERENT — DIFF CARDS
   ═══════════════════════════════════════ */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

/* Make last card (5th) center itself if alone on last row */
.diff-grid .diff-card:last-child:nth-child(3n+2) {
  grid-column: 2;
}

.diff-card {
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition: transform var(--tx-base), border-color var(--tx-base),
              box-shadow var(--tx-base);
  cursor: default;
}
.diff-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-blue);
  box-shadow: 0 12px 40px var(--clr-blue-dim);
}

.diff-card__icon {
  width: 44px; height: 44px;
  color: var(--clr-blue);
  background: var(--clr-blue-dim);
  border: 1px solid rgba(10, 142, 255, 0.2);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  padding: 10px;
  flex-shrink: 0;
  transition: background var(--tx-base), box-shadow var(--tx-base);
}
.diff-card:hover .diff-card__icon {
  background: rgba(10, 142, 255, 0.2);
  box-shadow: 0 0 16px var(--clr-blue-dim);
}

.diff-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
}

.diff-card__desc {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.7;
}

/* ═══════════════════════════════════════
   APPLICATIONS GRID
   ═══════════════════════════════════════ */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.app-card {
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition: transform var(--tx-base), border-color var(--tx-base),
              box-shadow var(--tx-base), background var(--tx-base);
  cursor: default;
}
.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--clr-border-2);
  background: rgba(13, 30, 52, 0.8);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.app-card__ico {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: var(--sp-1);
}

.app-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.3;
}

.app-card__desc {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.72;
}

/* ═══════════════════════════════════════
   INNOVATION HIGHLIGHT CARD
   ═══════════════════════════════════════ */
.innovation-card {
  position: relative;
  overflow: hidden;
  padding: 0;
}

/* Animated radial glow background */
.innovation-card__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 60% at 20% 50%,
      rgba(0, 229, 204, 0.07) 0%,
      transparent 70%),
    radial-gradient(ellipse 50% 80% at 80% 50%,
      rgba(10, 142, 255, 0.05) 0%,
      transparent 70%);
  animation: innovGlow 6s ease-in-out infinite alternate;
}
@keyframes innovGlow {
  from { opacity: 0.7; }
  to   { opacity: 1; }
}

.innovation-card__inner {
  position: relative;
  z-index: 1;
  padding: var(--sp-12) clamp(var(--sp-8), 6vw, var(--sp-16));
}

.innovation-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: var(--sp-2) var(--sp-5);
  margin-bottom: var(--sp-8);
}

.innovation-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-2xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--clr-text);
  margin-bottom: var(--sp-6);
  line-height: 1.15;
  max-width: 680px;
}

.innovation-card__body {
  font-size: var(--fs-md);
  color: var(--clr-muted);
  line-height: 1.78;
  max-width: 640px;
  margin-bottom: var(--sp-10);
}

/* Five pillars row */
.innovation-pillars {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-10);
}

.innov-pillar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(13, 30, 52, 0.70);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: var(--sp-4) var(--sp-5);
  min-width: 110px;
  transition: border-color var(--tx-base), background var(--tx-base);
}
.innov-pillar:hover {
  border-color: var(--clr-accent-mid);
  background: rgba(0, 229, 204, 0.05);
}

.innov-pillar__icon { font-size: 1.5rem; line-height: 1; }

.innov-pillar__label {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--clr-muted);
  text-align: center;
  letter-spacing: 0.02em;
}

.innov-pillar__sep {
  font-family: var(--ff-mono);
  font-size: var(--fs-xl);
  color: var(--clr-border-2);
  flex-shrink: 0;
  line-height: 1;
  padding-bottom: var(--sp-4);
  align-self: center;
}

/* Closing statement */
.innovation-card__statement {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--clr-text);
  line-height: 1.6;
  padding: var(--sp-6) var(--sp-8);
  border-left: 3px solid var(--clr-accent);
  background: rgba(0, 229, 204, 0.04);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  max-width: 720px;
  font-style: italic;
}

/* ═══════════════════════════════════════
   SCROLL-REVEAL UTILITY
   ═══════════════════════════════════════ */
.eco-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.eco-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 1100px) {
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid  { grid-template-columns: repeat(2, 1fr); }
  .diff-grid .diff-card:last-child:nth-child(3n+2) { grid-column: auto; }
}

@media (max-width: 900px) {
  .weather-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .tech-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .app-grid  { grid-template-columns: 1fr; }
  .diff-grid .diff-card:last-child:nth-child(3n+2) { grid-column: auto; }

  .wf-step {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-3);
  }
  .wf-step__title { min-width: unset; }

  .innovation-pillars { gap: var(--sp-2); }
  .innov-pillar { min-width: 90px; padding: var(--sp-3) var(--sp-4); }
  .innov-pillar__sep { padding-bottom: var(--sp-3); }
  .innovation-card__statement { padding: var(--sp-4) var(--sp-5); }
}

@media (max-width: 520px) {
  .weather-grid { grid-template-columns: 1fr 1fr; }
  .eco-block { margin-bottom: var(--sp-16); }
}
/* ================================================================
   PHASE 1 ADDITIONS
   Assessment Scope Card · Platform Illustration
   ================================================================ */

/* ── Assessment Scope Card ── */
.scope-card {
  padding: var(--sp-6);
  border-color: rgba(0, 229, 204, 0.2);
  background: rgba(0, 10, 24, 0.5);
}

.scope-card__header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--clr-border);
}

.scope-card__icon {
  width: 36px; height: 36px;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  padding: 8px;
  flex-shrink: 0;
}

.scope-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
}

.scope-card__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-5) var(--sp-8);
  margin-bottom: var(--sp-5);
}

.scope-col__heading {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

.scope-col__heading--pass { color: var(--clr-accent); }
.scope-col__heading--fail { color: rgba(255, 77, 77, 0.8); }

.scope-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.scope-list__item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  line-height: 1.5;
}

.scope-list__item--pass { color: var(--clr-muted); }
.scope-list__item--fail { color: rgba(180, 190, 210, 0.6); }

.scope-list__icon {
  font-style: normal;
  font-size: var(--fs-xs);
  flex-shrink: 0;
  width: 14px;
  text-align: center;
}

.scope-list__item--pass .scope-list__icon { color: var(--clr-accent); }
.scope-list__item--fail .scope-list__icon { color: rgba(255, 77, 77, 0.7); }

.scope-card__disclaimer {
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  line-height: 1.65;
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  background: rgba(13, 30, 52, 0.4);
  border-left: 3px solid rgba(0, 229, 204, 0.35);
}

@media (max-width: 540px) {
  .scope-card__body {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
  }
}

/* ── Platform Illustration Card ── */
.platform-illustration {
  padding: var(--sp-8);
  overflow: hidden;
}

.platform-illustration__content {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--sp-10);
  align-items: center;
}

.platform-illustration__title {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-4);
  line-height: 1.3;
}

.platform-illustration__desc {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  line-height: 1.75;
  margin-bottom: var(--sp-6);
}

.platform-pillars {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.platform-pillar {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: var(--sp-1) var(--sp-4);
}

.platform-pillar__dot {
  width: 5px; height: 5px;
  background: var(--clr-accent);
  border-radius: var(--r-full);
  flex-shrink: 0;
}

.platform-illustration__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.plat-svg {
  width: 100%;
  max-width: 340px;
  height: auto;
  opacity: 0.9;
}

/* SVG pulse animation */
.plat-pulse {
  animation: platPulse 2.4s linear infinite;
}
.plat-pulse--2 { animation-delay: 0.8s; }
.plat-pulse--3 { animation-delay: 1.6s; }

@keyframes platPulse {
  0%   { stroke-dashoffset: 0; opacity: 0.8; }
  100% { stroke-dashoffset: -48; opacity: 0.1; }
}

@media (max-width: 900px) {
  .platform-illustration__content {
    grid-template-columns: 1fr;
  }
  .platform-illustration__visual {
    order: -1;
  }
  .plat-svg { max-width: 280px; }
}

@media (max-width: 540px) {
  .platform-illustration { padding: var(--sp-5); }
  .platform-illustration__title { font-size: var(--fs-lg); }
}

/* ================================================================
   PHASE 2 — WATER INTELLIGENCE NETWORK
   Illustration · Network Overview · Station Cards ·
   Detail Panel · Charts · Trend Assessment · Future Vision
   ================================================================ */

/* ── Illustration Section ── */
.illustration-section {
  padding-block: var(--sp-6);
}

.illustration-wrapper {
  overflow: hidden;
  border-radius: var(--r-xl);
  box-shadow:
    0 0 0 1px var(--clr-border),
    0 0 48px rgba(0, 229, 204, 0.07),
    0 0 96px rgba(0, 229, 204, 0.03);
  background: rgba(6, 21, 37, 0.6);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.illustration-img {
  width: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
  object-position: center;
  display: block;
  border-radius: var(--r-xl);
  transition: opacity 0.4s ease;
}

/* Hide broken-image icon when src is placeholder */
.illustration-img:not([src]),
.illustration-img[src="assets/images/water-intelligence-illustration.png"]:not([complete]) {
  opacity: 0;
  min-height: 240px;
}

@media (max-width: 768px) {
  .illustration-img { aspect-ratio: 4 / 3; }
}

@media (max-width: 540px) {
  .illustration-img { aspect-ratio: 3 / 2; }
}

/* ── Network Section base ── */
.network-section .eco__header {
  margin-bottom: var(--sp-8);
}

.network-demo-note {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  letter-spacing: 0.04em;
}

/* ── Network Overview: 4 stat cards ── */
.network-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.network-stat {
  padding: var(--sp-5) var(--sp-5);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-1);
  position: relative;
  overflow: hidden;
}

.network-stat__icon {
  font-size: 10px;
  color: var(--clr-dim);
  margin-bottom: var(--sp-1);
  letter-spacing: 0.05em;
}

.network-stat__value {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--clr-text);
}

.network-stat__label {
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  font-family: var(--ff-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.network-stat--healthy  { border-color: rgba(0,229,204,0.35); }
.network-stat--healthy  .network-stat__value { color: #00E5CC; }
.network-stat--moderate { border-color: rgba(245,166,35,0.35); }
.network-stat--moderate .network-stat__value { color: #F5A623; }
.network-stat--risk     { border-color: rgba(255,77,77,0.35); }
.network-stat--risk     .network-stat__value { color: #FF4D4D; }

@media (max-width: 700px) {
  .network-overview { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 400px) {
  .network-overview { grid-template-columns: 1fr 1fr; gap: var(--sp-3); }
}

/* ── Network AI Summary card ── */
.network-summary {
  padding: var(--sp-5) var(--sp-6);
  margin-bottom: var(--sp-8);
  border-color: rgba(0,229,204,0.18);
}

.network-summary__header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--clr-border);
}

.network-summary__ai-badge {
  width: 28px; height: 28px;
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  font-family: var(--ff-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  flex-shrink: 0;
}

.network-summary__title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  flex: 1;
}

.network-summary__period {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.network-summary__loading {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--clr-dim);
  font-size: var(--fs-sm);
}

.net-summary-dots {
  display: flex;
  gap: 5px;
}
.net-summary-dots span {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-accent);
  animation: dotPulse 1.4s ease-in-out infinite;
}
.net-summary-dots span:nth-child(2) { animation-delay: 0.2s; }
.net-summary-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40%           { transform: scale(1);   opacity: 1;   }
}

.network-summary__text {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  line-height: 1.75;
}

/* ── Station Grid ── */
.station-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-8);
}

@media (max-width: 768px) {
  .station-grid { grid-template-columns: 1fr; }
}

/* ── Station Card ── */
.station-card {
  padding: var(--sp-5);
  cursor: pointer;
  transition: border-color 0.25s ease, transform 0.2s ease,
              box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.station-card:hover {
  border-color: rgba(0,229,204,0.4);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,229,204,0.08);
}

.station-card.is-active {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 1px var(--clr-accent), 0 8px 32px rgba(0,229,204,0.12);
}

.station-card:focus-visible {
  outline: 2px solid var(--clr-accent);
  outline-offset: 3px;
}

.station-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
}

.station-card__id {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--clr-dim);
  letter-spacing: 0.1em;
  margin-bottom: 3px;
}

.station-card__name {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.3;
}

/* Status badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-full);
  white-space: nowrap;
  flex-shrink: 0;
}

.status--healthy  {
  background: rgba(0,229,204,0.1);
  border: 1px solid rgba(0,229,204,0.35);
  color: #00E5CC;
}
.status--moderate {
  background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.35);
  color: #F5A623;
}
.status--risk {
  background: rgba(255,77,77,0.1);
  border: 1px solid rgba(255,77,77,0.35);
  color: #FF4D4D;
}

/* WQS + badge row */
.station-card__score-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-3);
}

.station-card__wqs {
  display: flex;
  align-items: baseline;
  gap: 4px;
  line-height: 1;
}

.station-card__wqs-num {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
}

.station-card__wqs-den {
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  color: var(--clr-dim);
}

.station-card__wqs-lbl {
  font-family: var(--ff-mono);
  font-size: 9px;
  color: var(--clr-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  align-self: flex-end;
  margin-bottom: 2px;
}

.station-card__badges {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--sp-2);
}

/* Priority badge */
.priority-badge {
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: var(--r-full);
  white-space: nowrap;
}

.priority--low {
  background: rgba(0,229,204,0.08);
  border: 1px solid rgba(0,229,204,0.25);
  color: rgba(0,229,204,0.8);
}
.priority--medium {
  background: rgba(245,166,35,0.08);
  border: 1px solid rgba(245,166,35,0.25);
  color: #F5A623;
}
.priority--high {
  background: rgba(255,77,77,0.08);
  border: 1px solid rgba(255,77,77,0.3);
  color: #FF4D4D;
}

/* Confidence badge */
.confidence-badge {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--clr-dim);
  letter-spacing: 0.05em;
}

/* Mini readings 4-column */
.station-card__readings {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-2);
}

.stn-reading {
  background: rgba(6,21,37,0.5);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  padding: var(--sp-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stn-reading__lbl {
  font-family: var(--ff-mono);
  font-size: 9px;
  color: var(--clr-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stn-reading__val {
  font-family: var(--ff-mono);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-text);
}

/* Sparkline */
.station-card__spark {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.sparkline-svg {
  width: 100%;
  height: 32px;
  overflow: visible;
}

.station-card__spark-lbl {
  font-family: var(--ff-mono);
  font-size: 9px;
  color: var(--clr-dim);
  letter-spacing: 0.08em;
}

/* Card footer */
.station-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--clr-border);
}

.station-card__updated {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--clr-dim);
  letter-spacing: 0.04em;
}

.btn-station-detail {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--clr-accent);
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-mid);
  border-radius: var(--r-full);
  padding: 6px 14px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.btn-station-detail:hover {
  background: var(--clr-accent-mid);
  border-color: var(--clr-accent);
  color: var(--clr-text);
}

/* ── Station Detail Panel ── */
.station-detail {
  margin-bottom: var(--sp-8);
  padding: var(--sp-6);
  border-color: rgba(0,229,204,0.25);
}

.station-detail__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--clr-border);
}

.station-detail__id {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-accent);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--sp-1);
}

.station-detail__name {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--clr-text);
}

.station-detail__close {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--clr-dim);
  background: transparent;
  border: 1px solid var(--clr-border);
  border-radius: var(--r-full);
  padding: 7px 14px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  flex-shrink: 0;
}

.station-detail__close:hover {
  border-color: rgba(255,77,77,0.4);
  color: #FF4D4D;
}

/* Detail current readings row */
.detail-readings {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.detail-reading-card {
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  text-align: center;
}

.detail-reading-card--wqs {
  border-color: rgba(0,229,204,0.3);
  background: rgba(0,229,204,0.04);
}

.detail-reading__val {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1;
}

.detail-reading__lbl {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--clr-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-reading__lbl span {
  color: var(--clr-dim);
  opacity: 0.7;
}

.detail-reading__hint {
  font-size: 10px;
  color: var(--clr-dim);
  opacity: 0.65;
}

@media (max-width: 700px) {
  .detail-readings { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  .detail-readings { grid-template-columns: repeat(2, 1fr); }
}

/* Detail section label */
.detail-section-label {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-dim);
  margin-bottom: var(--sp-4);
  margin-top: var(--sp-6);
}

/* 4 charts in 2x2 grid */
.detail-charts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.chart-card {
  padding: var(--sp-4);
}

.chart-card__label {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-3);
  font-weight: 600;
}

.chart-card__label span {
  color: var(--clr-dim);
  font-weight: 400;
}

.chart-card__wrap {
  position: relative;
  height: 160px;
}

.chart-card__wrap canvas {
  width: 100% !important;
  height: 100% !important;
}

@media (max-width: 700px) {
  .detail-charts { grid-template-columns: 1fr; }
  .chart-card__wrap { height: 140px; }
}

/* ── Trend Assessment ── */
.trend-assessment__loading {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-5);
  color: var(--clr-dim);
  font-size: var(--fs-sm);
  background: rgba(6,21,37,0.4);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
}

/* Trend result */
.trend-result {
  border: 1px solid var(--clr-border);
  border-radius: var(--r-xl);
  background: rgba(6,21,37,0.45);
  overflow: hidden;
}

.trend-result__top {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--clr-border);
  background: rgba(0,229,204,0.03);
}

.trend-badges {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

/* Trend direction badge */
.trend-badge {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: var(--r-full);
}

.trend--stable   {
  background: rgba(0,229,204,0.1); border: 1px solid rgba(0,229,204,0.35); color: #00E5CC;
}
.trend--improving {
  background: rgba(10,142,255,0.1); border: 1px solid rgba(10,142,255,0.35); color: #0A8EFF;
}
.trend--declining {
  background: rgba(245,166,35,0.1); border: 1px solid rgba(245,166,35,0.35); color: #F5A623;
}
.trend--anomaly {
  background: rgba(255,77,77,0.1); border: 1px solid rgba(255,77,77,0.35); color: #FF4D4D;
}

.trend-confidence {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--clr-dim);
  letter-spacing: 0.05em;
}

/* Trend fields */
.trend-fields {
  padding: var(--sp-5);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.trend-field {
  background: rgba(6,21,37,0.4);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
}

.trend-field--insight {
  border-color: rgba(0,229,204,0.2);
  background: rgba(0,229,204,0.03);
}

.trend-field--actions {
  grid-column: 1 / -1;
}

.trend-field__label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--sp-2);
}

.trend-field__body {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.7;
}

/* Recommended actions list */
.recommended-actions {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

.recommended-action {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.6;
  padding: var(--sp-2) var(--sp-3);
  background: rgba(0,229,204,0.04);
  border: 1px solid rgba(0,229,204,0.12);
  border-radius: var(--r-md);
}

.recommended-action svg {
  flex-shrink: 0;
  margin-top: 3px;
  opacity: 0.8;
}

.trend-disclaimer {
  margin: 0;
  padding: var(--sp-3) var(--sp-5);
  font-size: 11px;
  color: var(--clr-dim);
  border-top: 1px solid var(--clr-border);
  line-height: 1.6;
}

/* Trend error */
.trend-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-6);
  text-align: center;
  color: var(--clr-muted);
  font-size: var(--fs-sm);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-xl);
  background: rgba(6,21,37,0.4);
}

@media (max-width: 700px) {
  .trend-fields { grid-template-columns: 1fr; }
  .trend-field--actions { grid-column: 1; }
}

/* ── Future Vision card ── */
.future-vision-card {
  padding: var(--sp-8);
  border-color: rgba(0,229,204,0.15);
  background: rgba(6,21,37,0.4);
  margin-top: var(--sp-6);
}

.future-vision-card__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}

.future-vision-card__icon {
  color: var(--clr-accent);
  opacity: 0.5;
  flex-shrink: 0;
  width: 72px; height: 72px;
}

.future-vision-card__title {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: var(--sp-3);
}

.future-vision-card__desc {
  font-size: var(--fs-base);
  color: var(--clr-muted);
  line-height: 1.75;
}

@media (max-width: 768px) {
  .future-vision-card__inner { flex-direction: column; gap: var(--sp-4); }
  .future-vision-card__icon  { width: 48px; height: 48px; }
}

@media (max-width: 540px) {
  .station-detail { padding: var(--sp-4); }
  .station-detail__name { font-size: var(--fs-lg); }
  .future-vision-card { padding: var(--sp-5); }
}

/* ================================================================
   PHASE 2 — SUPABASE EDITION ADDITIONS
   Connection status badges · No-data states · Loading shimmer ·
   Last-updated display · Uploader card · Chart no-data message
   ================================================================ */

/* ── Connection Status Badge ── */
.conn-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-full);
  white-space: nowrap;
  flex-shrink: 0;
}

.conn-badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.conn--online {
  background: rgba(0,229,204,0.1);
  border: 1px solid rgba(0,229,204,0.35);
  color: #00E5CC;
}
.conn--online .conn-badge__dot {
  background: #00E5CC;
  box-shadow: 0 0 6px #00E5CC;
  animation: connPulse 2s ease-in-out infinite;
}

.conn--delayed {
  background: rgba(245,166,35,0.1);
  border: 1px solid rgba(245,166,35,0.35);
  color: #F5A623;
}
.conn--delayed .conn-badge__dot {
  background: #F5A623;
}

.conn--offline {
  background: rgba(255,77,77,0.08);
  border: 1px solid rgba(255,77,77,0.3);
  color: #FF4D4D;
}
.conn--offline .conn-badge__dot {
  background: #FF4D4D;
}

.conn--nodata {
  background: rgba(58,100,128,0.15);
  border: 1px solid rgba(58,100,128,0.35);
  color: #3A6480;
}
.conn--nodata .conn-badge__dot {
  background: #3A6480;
}

@keyframes connPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px #00E5CC; }
  50%       { opacity: 0.6; box-shadow: 0 0 10px #00E5CC; }
}

/* ── Station card status column (stacks connection + quality) ── */
.station-card__status-col {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--sp-2);
  flex-shrink: 0;
}

/* ── No Data state on station card ── */
.station-card__nodata {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--sp-8) var(--sp-4);
  gap: var(--sp-3);
  color: var(--clr-dim);
  flex: 1;
}

.station-card__nodata-title {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--clr-muted);
}

.station-card__nodata-hint {
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  line-height: 1.6;
}

/* ── Station card loading skeleton ── */
.station-card--loading {
  pointer-events: none;
}

.station-card__loading-shimmer {
  height: 120px;
  border-radius: var(--r-lg);
  background: linear-gradient(
    90deg,
    rgba(28,58,88,0.3) 25%,
    rgba(28,58,88,0.5) 50%,
    rgba(28,58,88,0.3) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}

/* ── Last Updated display on station card ── */
.station-card__updated {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.station-card__updated-lbl {
  font-family: var(--ff-mono);
  font-size: 9px;
  color: var(--clr-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.station-card__updated-val {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--clr-muted);
  font-weight: 500;
}

/* ── Uploader card in detail panel ── */
.detail-reading-card--uploader {
  border-color: rgba(10,142,255,0.25);
  background: rgba(10,142,255,0.04);
}

.detail-reading__val--uploader {
  font-family: var(--ff-display);
  font-size: var(--fs-base) !important;
  font-weight: 600;
  color: var(--clr-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* ── Chart no-data message ── */
.chart-nodata {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--clr-dim);
  text-align: center;
  padding: var(--sp-6) var(--sp-4);
  border: 1px dashed var(--clr-border);
  border-radius: var(--r-lg);
  line-height: 1.6;
  margin-top: var(--sp-2);
}

/* ── Detail readings: 6-column (5 params + uploader) ── */
.detail-readings {
  grid-template-columns: repeat(6, 1fr);
}

@media (max-width: 900px) {
  .detail-readings { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 540px) {
  .detail-readings { grid-template-columns: repeat(2, 1fr); }
}