/* ============================================================
   EcoSphere – Main Stylesheet
   Palette: Deep Green #1B5E20 · Sky Blue #4FC3F7
            Earth Beige #FFF8E1 · Orange #FFB74D · Gray #BDBDBD
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --deep-green:    #1B5E20;
  --green:         #2E7D32;
  --green-light:   #43A047;
  --green-lighter: #66BB6A;
  --green-pale:    #C8E6C9;
  --sky-blue:      #4FC3F7;
  --sky-dark:      #0288D1;
  --beige:         #FFF8E1;
  --beige-dark:    #FFF3E0;
  --orange:        #FFB74D;
  --orange-dark:   #F57C00;
  --gray:          #BDBDBD;
  --gray-dark:     #757575;
  --gray-light:    #F5F5F5;
  --dark:          #1a1a2e;
  --dark2:         #16213e;
  --white:         #ffffff;
  --shadow:        0 4px 20px rgba(0,0,0,.10);
  --shadow-deep:   0 8px 40px rgba(0,0,0,.18);
  --radius:        14px;
  --radius-sm:     9px;
  --tr:            all .3s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Poppins', sans-serif;
  background: var(--beige);
  color: var(--dark);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Scrollbar ─────────────────────────────────── */
::-webkit-scrollbar { width: 7px; }
::-webkit-scrollbar-track { background: var(--gray-light); }
::-webkit-scrollbar-thumb { background: var(--green-light); border-radius: 4px; }

/* ── Selection ─────────────────────────────────── */
::selection { background: var(--green-pale); color: var(--deep-green); }

/* ================================================================
   NAVBAR
   ================================================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(27,94,32,.96);
  backdrop-filter: blur(12px);
  height: 70px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
  transition: var(--tr);
}
.navbar.scrolled { height: 58px; background: rgba(27,94,32,1); }

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
}
.nav-logo .logo-icon { font-size: 2rem; animation: globe-spin 12s linear infinite; }
@keyframes globe-spin { to { transform: rotate(360deg); } }
.nav-logo span { font-size: 1.45rem; font-weight: 800; color: #fff; letter-spacing: .5px; }
.nav-logo span em { color: var(--sky-blue); font-style: normal; }

.nav-links { display: flex; align-items: center; gap: .4rem; list-style: none; }
.nav-links a {
  color: rgba(255,255,255,.85); text-decoration: none;
  padding: .45rem .85rem; border-radius: 8px;
  font-size: .88rem; font-weight: 500; transition: var(--tr);
}
.nav-links a:hover, .nav-links a.active {
  color: #fff; background: rgba(255,255,255,.15);
}
.btn-join {
  background: linear-gradient(135deg,#66BB6A,#43A047) !important;
  color: #fff !important; padding: .45rem 1.1rem !important;
  border-radius: 25px !important; font-weight: 700 !important;
  box-shadow: 0 4px 15px rgba(102,187,106,.4);
}
.btn-join:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(102,187,106,.6) !important;
  background: linear-gradient(135deg,#81C784,#66BB6A) !important;
}
.nav-toggle { display: none; flex-direction: column; cursor: pointer; gap: 5px; }
.nav-toggle span { width: 25px; height: 3px; background: #fff; border-radius: 3px; transition: var(--tr); }

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative; height: 100vh; min-height: 620px;
  overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }

/* Sky layer */
.hero-sky {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,#263238 0%,#546E7A 40%,#78909C 70%,#90A4AE 100%);
  animation: sky-clear 7s ease-in-out 1s forwards;
}
@keyframes sky-clear {
  0%   { background: linear-gradient(180deg,#263238 0%,#546E7A 40%,#78909C 70%,#90A4AE 100%); }
  50%  { background: linear-gradient(180deg,#1a237e 0%,#0277BD 40%,#29B6F6 70%,#4FC3F7 100%); }
  100% { background: linear-gradient(180deg,#0D47A1 0%,#1565C0 30%,#1976D2 55%,#4FC3F7 80%,#81D4FA 100%); }
}

/* Smog/Pollution overlay */
.smog-layer {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 50% 35%, rgba(120,100,80,.65) 0%, transparent 55%),
    radial-gradient(ellipse at 30% 55%, rgba(100,90,70,.45) 0%, transparent 40%),
    radial-gradient(ellipse at 75% 45%, rgba(110,100,80,.4)  0%, transparent 35%);
  animation: smog-clear 7s ease-in-out 1s forwards;
}
@keyframes smog-clear { 0% { opacity:1; } 100% { opacity:0; } }

/* Clouds */
.cloud {
  position: absolute; font-size: 4rem;
  filter: grayscale(80%);
  animation: cloud-drift var(--dur,25s) linear infinite var(--delay,0s),
             cloud-clean 7s ease 2s forwards;
}
@keyframes cloud-drift {
  from { transform: translateX(-250px); }
  to   { transform: translateX(calc(100vw + 250px)); }
}
@keyframes cloud-clean {
  from { filter: grayscale(80%); opacity:.55; }
  to   { filter: grayscale(0%);  opacity:.80; }
}
.cloud-1 { top:12%; --dur:28s; --delay:0s;   font-size:3rem;   }
.cloud-2 { top:22%; --dur:38s; --delay:-12s; font-size:5rem;   }
.cloud-3 { top:8%;  --dur:22s; --delay:-6s;  font-size:2.5rem; }

/* Buildings SVG */
.buildings-svg { position: absolute; bottom: 0; left: 0; width: 100%; }

/* Trees */
.trees-layer {
  position: absolute; bottom: 0; left: 0; right: 0; height: 32%;
  display: flex; align-items: flex-end; justify-content: space-around;
  padding: 0 4%;
}
.tree {
  transform: scaleY(0); transform-origin: bottom;
  opacity: 0; transition: none;
  animation: grow-tree .9s ease-out forwards;
}
.tree:nth-child(1) { animation-delay:3.2s; font-size:2.5rem; }
.tree:nth-child(2) { animation-delay:3.5s; font-size:3.5rem; }
.tree:nth-child(3) { animation-delay:3.8s; font-size:2.2rem; }
.tree:nth-child(4) { animation-delay:4.1s; font-size:4rem;   }
.tree:nth-child(5) { animation-delay:4.4s; font-size:2.8rem; }
.tree:nth-child(6) { animation-delay:4.7s; font-size:3.2rem; }
.tree:nth-child(7) { animation-delay:5.0s; font-size:2.2rem; }
.tree:nth-child(8) { animation-delay:5.3s; font-size:3.5rem; }
.tree:nth-child(9) { animation-delay:5.5s; font-size:2rem;   }
@keyframes grow-tree {
  0%   { transform:scaleY(0);   opacity:0; }
  60%  { transform:scaleY(1.1); opacity:1; }
  100% { transform:scaleY(1);   opacity:1; }
}

/* Ground */
.ground {
  position: absolute; bottom: 0; left: 0; right: 0; height: 13%;
  background: linear-gradient(180deg,#795548,#5D4037);
  animation: ground-green 7s ease-in-out 2s forwards;
}
@keyframes ground-green {
  0%   { background: linear-gradient(180deg,#795548,#5D4037); }
  100% { background: linear-gradient(180deg,#2E7D32,#1B5E20); }
}

/* Hero text */
.hero-content {
  position: relative; z-index: 10;
  text-align: center; padding: 2rem; max-width: 820px;
}
.hero-badge {
  display: inline-block;
  background: rgba(79,195,247,.18); border:1px solid var(--sky-blue);
  color: var(--sky-blue);
  padding: .3rem 1.1rem; border-radius: 20px;
  font-size: .82rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 1.5rem;
  animation: fadeInDown 1s ease .4s both;
}
.hero-title {
  font-size: clamp(2.6rem,6vw,4.8rem); font-weight: 800;
  color: #fff; line-height: 1.1; margin-bottom: 1.3rem;
  text-shadow: 0 2px 20px rgba(0,0,0,.35);
  animation: fadeInUp 1s ease .8s both;
}
.hero-title span { color: var(--sky-blue); display: block; }
.hero-subtitle {
  font-size: clamp(.95rem,2vw,1.15rem); color: rgba(255,255,255,.85);
  max-width: 600px; margin: 0 auto 2.5rem;
  animation: fadeInUp 1s ease 1.1s both;
}
.hero-cta {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
  animation: fadeInUp 1s ease 1.4s both;
}

/* CTA Buttons — shared base keeps both visually equal weight */
.btn-primary,
.btn-secondary {
  padding: .9rem 2rem; border-radius: 50px;
  font-size: 1rem; font-weight: 700; cursor: pointer;
  transition: var(--tr);
  text-decoration: none; display: inline-flex; align-items: center; gap: .5rem;
  font-family: 'Poppins', sans-serif;
  box-shadow: 0 6px 22px rgba(0,0,0,.25);
}
.btn-primary:hover,
.btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 9px 28px rgba(0,0,0,.35);
}

.btn-primary {
  background: linear-gradient(135deg,var(--green-lighter),var(--green));
  color: #fff; border: 2px solid transparent;
}
.btn-primary:hover {
  background: linear-gradient(135deg,#81C784,var(--green-lighter));
}
.btn-secondary {
  background: rgba(255,255,255,.14); color: #fff;
  border: 2px solid #fff;
}
.btn-secondary:hover {
  background: rgba(255,255,255,.26);
  border-color: #fff;
}

/* Remove the separate CTA-band override — base styles are now sufficient */

/* ================================================================
   CTA BAND
   ================================================================ */
.cta-band {
  background: linear-gradient(135deg,var(--deep-green),var(--green),#0288D1);
  padding: 5rem 2rem; text-align: center;
}
.cta-band h2 { font-size:clamp(2rem,5vw,3rem); font-weight:800; color:#fff; margin-bottom:1rem; }
.cta-band p  { color:rgba(255,255,255,.85); font-size:1.05rem; max-width:600px; margin:0 auto 2.5rem; }

.scroll-indicator {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  z-index: 10; color: #fff; font-size: 1.4rem; opacity: .7;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%,20%,50%,80%,100% { transform: translateX(-50%) translateY(0); }
  40%  { transform: translateX(-50%) translateY(-12px); }
  60%  { transform: translateX(-50%) translateY(-6px); }
}

/* ================================================================
   COMMON SECTION STYLES
   ================================================================ */
section { padding: 5rem 2rem; }
.max-w  { max-width: 1200px; margin: 0 auto; }

.section-header { text-align: center; margin-bottom: 3rem; }
.section-tag {
  display: inline-block; background: var(--green-pale); color: var(--deep-green);
  padding: .3rem 1rem; border-radius: 20px;
  font-size: .78rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: .9rem;
}
.section-title {
  font-size: clamp(1.8rem,4vw,2.6rem); font-weight: 800;
  color: var(--deep-green); margin-bottom: .8rem;
}
.section-subtitle { font-size: 1rem; color: var(--gray-dark); max-width: 600px; margin: 0 auto; }

/* ================================================================
   STAT STRIP
   ================================================================ */
.stats-strip {
  background: linear-gradient(135deg,var(--deep-green),var(--green));
  padding: 2.2rem 2rem;
  display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  gap: 1rem;
}
.stat-item { text-align: center; color: #fff; padding: 1rem .5rem; }
.stat-number { font-size: 2.6rem; font-weight: 800; color: var(--sky-blue); display: block; }
.stat-label  { font-size: .85rem; opacity: .85; }

/* ================================================================
   FEATURE CARDS  (Home page)
   ================================================================ */
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  gap: 1.5rem;
}
.feature-card {
  background: #fff; border-radius: var(--radius); padding: 2rem;
  text-align: center; box-shadow: var(--shadow);
  transition: var(--tr); cursor: pointer; border: 2px solid transparent;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg,var(--deep-green),var(--sky-blue));
  transform: scaleX(0); transition: var(--tr);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-deep); border-color: var(--green-pale); }
.feature-icon  { font-size: 3rem; margin-bottom: 1rem; display: block; transition: var(--tr); }
.feature-card:hover .feature-icon { transform: scale(1.2) rotate(5deg); }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--deep-green); margin-bottom: .65rem; }
.feature-card p  { font-size: .88rem; color: var(--gray-dark); line-height: 1.65; }
.feature-link {
  display: inline-flex; align-items: center; gap: .3rem;
  color: var(--green-light); text-decoration: none;
  font-weight: 600; font-size: .88rem; margin-top: 1rem; transition: var(--tr);
}
.feature-link:hover { gap: .6rem; color: var(--deep-green); }

/* ================================================================
   LIVE DATA  (Home dark section)
   ================================================================ */
.live-data-section { background: var(--dark); padding: 5rem 2rem; }
.live-data-section .section-tag  { background: rgba(79,195,247,.18); color: var(--sky-blue); }
.live-data-section .section-title { color: #fff; }
.live-data-section .section-subtitle { color: rgba(255,255,255,.55); }

.data-cards-grid {
  display: grid; grid-template-columns: repeat(auto-fit,minmax(190px,1fr));
  gap: 1.3rem;
}
.data-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 1.5rem; text-align: center;
  transition: var(--tr); position: relative; overflow: hidden;
}
.data-card:hover { background: rgba(255,255,255,.09); border-color: var(--sky-blue); transform: translateY(-5px); }
.data-card .card-icon { font-size: 2.4rem; margin-bottom: .65rem; display: block; }
.data-value   { font-size: 1.9rem; font-weight: 800; color: var(--sky-blue); margin-bottom: .2rem; }
.data-label   { font-size: .82rem; color: rgba(255,255,255,.55); margin-bottom: .5rem; }
.data-change  { font-size: .78rem; font-weight: 600; padding: .2rem .6rem; border-radius: 12px; display: inline-block; }
.data-change.up   { background: rgba(255,183,77,.18); color: var(--orange); }
.data-change.down { background: rgba(102,187,106,.18); color: var(--green-lighter); }
.pulse-dot {
  position: absolute; top: .9rem; right: .9rem;
  width: 9px; height: 9px; background: var(--green-lighter); border-radius: 50%;
  animation: pulse-anim 2.2s infinite;
}
@keyframes pulse-anim {
  0%   { box-shadow: 0 0 0 0 rgba(102,187,106,.7); }
  70%  { box-shadow: 0 0 0 10px rgba(102,187,106,0); }
  100% { box-shadow: 0 0 0 0 rgba(102,187,106,0); }
}

/* ================================================================
   ANIMATIONS (utility)
   ================================================================ */
@keyframes fadeIn      { from{opacity:0;} to{opacity:1;} }
@keyframes fadeInUp    { from{opacity:0;transform:translateY(40px);} to{opacity:1;transform:none;} }
@keyframes fadeInDown  { from{opacity:0;transform:translateY(-20px);} to{opacity:1;transform:none;} }
@keyframes fadeInLeft  { from{opacity:0;transform:translateX(-40px);} to{opacity:1;transform:none;} }
@keyframes fadeInRight { from{opacity:0;transform:translateX(40px);}  to{opacity:1;transform:none;} }

.animate-on-scroll { opacity:0; transform:translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.animate-on-scroll.visible { opacity:1; transform:none; }

/* ================================================================
   PAGE HERO  (inner pages)
   ================================================================ */
.page-hero {
  padding: 120px 2rem 3.5rem;
  background: linear-gradient(135deg,var(--deep-green) 0%,var(--green) 50%,#1565C0 100%);
  text-align: center; color: #fff; position: relative; overflow: hidden;
}
.page-hero::before {
  content:''; position:absolute; inset:0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1.5' fill='%23ffffff' opacity='.06'/%3E%3C/svg%3E");
}
.page-hero h1 { font-size:clamp(2rem,5vw,3rem); font-weight:800; margin-bottom:.6rem; position:relative; }
.page-hero p  { font-size:1.05rem; opacity:.85; max-width:600px; margin:0 auto; position:relative; }
.page-hero-badge {
  display:inline-block; background:rgba(79,195,247,.2); border:1px solid var(--sky-blue);
  color:var(--sky-blue); padding:.25rem .9rem; border-radius:20px;
  font-size:.78rem; font-weight:700; letter-spacing:2px; text-transform:uppercase;
  margin-bottom:1rem; position:relative;
}

/* ================================================================
   DASHBOARD
   ================================================================ */
.dashboard-container { max-width:1400px; margin:0 auto; padding:2rem; }

.dashboard-filters {
  display:flex; gap:.8rem; flex-wrap:wrap; align-items:center;
  margin-bottom:1.8rem; padding:1rem 1.5rem;
  background:#fff; border-radius:var(--radius); box-shadow:var(--shadow);
}
.filter-label { font-weight:700; color:var(--deep-green); font-size:.88rem; }
.filter-select {
  padding:.5rem 1rem; border:1.5px solid var(--gray); border-radius:8px;
  font-family:'Poppins',sans-serif; font-size:.88rem; color:var(--dark);
  background:#fff; cursor:pointer; transition:var(--tr); outline:none;
}
.filter-select:focus { border-color:var(--green-light); }
.filter-btn {
  padding:.45rem .9rem; border:1.5px solid transparent; border-radius:8px;
  font-family:'Poppins',sans-serif; font-size:.82rem; cursor:pointer; transition:var(--tr);
  background:var(--gray-light); color:var(--gray-dark); font-weight:600;
}
.filter-btn.active { background:var(--deep-green); color:#fff; border-color:var(--deep-green); }
.filter-btn:hover:not(.active) { background:var(--green-pale); color:var(--deep-green); }

#dashboard-map {
  height:460px; border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow); margin-bottom:2rem; z-index:1;
}

.panels-grid {
  display:grid; grid-template-columns:repeat(auto-fit,minmax(340px,1fr));
  gap:1.5rem; margin-bottom:2rem;
}
.panel { background:#fff; border-radius:var(--radius); padding:1.5rem; box-shadow:var(--shadow); }
.panel-header {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:1.4rem; padding-bottom:.9rem; border-bottom:2px solid var(--gray-light);
}
.panel-title {
  font-size:1.05rem; font-weight:700; color:var(--deep-green);
  display:flex; align-items:center; gap:.5rem;
}
.panel-badge { padding:.2rem .65rem; border-radius:12px; font-size:.72rem; font-weight:700; }
.badge-good     { background:#E8F5E9; color:var(--green); }
.badge-moderate { background:#FFF9C4; color:#F57F17; }
.badge-poor     { background:#FFEBEE; color:#C62828; }

.aqi-display { display:flex; align-items:center; gap:2rem; margin-bottom:1rem; }
.aqi-number  { font-size:3.5rem; font-weight:800; }
.aqi-details p { font-size:.83rem; margin-bottom:.2rem; color:var(--gray-dark); }
.aqi-details strong { color:var(--dark); }

.chart-container   { position:relative; height:200px; }
.chart-container-sm { position:relative; height:160px; }

.metrics-grid {
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:.65rem; margin-top:1rem;
}
.metric-item  { text-align:center; padding:.65rem; background:var(--gray-light); border-radius:var(--radius-sm); }
.metric-value { font-size:1.15rem; font-weight:800; color:var(--deep-green); }
.metric-label { font-size:.72rem; color:var(--gray-dark); margin-top:.2rem; }

/* ================================================================
   SIMULATION PAGE
   ================================================================ */
.simulation-layout {
  display:grid; grid-template-columns:360px 1fr;
  gap:1.5rem; max-width:1400px; margin:0 auto; padding:2rem;
}

.action-panel {
  background:#fff; border-radius:var(--radius);
  padding:1.5rem; box-shadow:var(--shadow);
  height:fit-content; position:sticky; top:88px;
}
.action-panel h3 {
  font-size:1.1rem; font-weight:700; color:var(--deep-green);
  margin-bottom:1.3rem; display:flex; align-items:center; gap:.5rem;
}
.action-item {
  display:flex; align-items:center; gap:.75rem;
  padding:.7rem; border-radius:var(--radius-sm); margin-bottom:.45rem;
  cursor:pointer; transition:var(--tr); border:1.5px solid var(--gray-light);
}
.action-item:hover    { background:var(--green-pale); border-color:var(--green-lighter); }
.action-item.selected { background:var(--green-pale); border-color:var(--green-light); }
.action-item:focus-visible {
  outline: 3px solid rgba(2,136,209,.35);
  outline-offset: 2px;
  border-color: var(--sky-dark);
}
.action-checkbox { width:18px; height:18px; accent-color:var(--deep-green); cursor:pointer; }
.action-info { flex:1; }
.action-name { font-size:.88rem; font-weight:600; color:var(--dark); }
.action-eco  { font-size:.78rem; color:var(--green-light); margin-top:.1rem; }
.action-pts  {
  background:var(--deep-green); color:#fff;
  padding:.18rem .55rem; border-radius:12px; font-size:.72rem; font-weight:700;
  white-space:nowrap;
}
.simulate-btn {
  width:100%; padding:1rem; margin-top:1rem;
  background:linear-gradient(135deg,var(--deep-green),var(--green));
  color:#fff; border:none; border-radius:var(--radius-sm);
  font-family:'Poppins',sans-serif; font-size:1rem; font-weight:700;
  cursor:pointer; transition:var(--tr);
  display:flex; align-items:center; justify-content:center; gap:.5rem;
}
.simulate-btn:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(27,94,32,.4); }
.simulate-btn:focus-visible {
  outline: 3px solid rgba(2,136,209,.35);
  outline-offset: 2px;
}

.sim-results-summary {
  margin-top:1rem; padding:1rem;
  background:var(--green-pale); border-radius:var(--radius-sm);
  display:none;
}
.result-row {
  display:flex; justify-content:space-between; align-items:center;
  padding:.28rem 0; font-size:.83rem;
  border-bottom:1px solid rgba(0,0,0,.05);
}
.result-row:last-child { border:none; }
.result-val { font-weight:800; color:var(--deep-green); }

.sim-main { display:flex; flex-direction:column; gap:1.5rem; }

/* Scene */
.sim-visualization {
  background:#fff; border-radius:var(--radius);
  padding:1.5rem; box-shadow:var(--shadow);
}
.sim-visualization h3 { font-size:1.05rem; font-weight:700; color:var(--deep-green); margin-bottom:1rem; }

.sim-scene {
  position:relative; height:220px;
  background:linear-gradient(180deg,#78909C 0%,#90A4AE 50%,#8D6E63 75%,#795548 100%);
  border-radius:var(--radius-sm); overflow:hidden; margin-bottom:1.2rem;
  transition:background 1.8s ease;
}
.sim-sky {
  position:absolute; inset:0;
  background:linear-gradient(180deg,#78909C 0%,#90A4AE 50%);
  transition:background 2s ease;
}
.sim-smog {
  position:absolute; inset:0;
  background:radial-gradient(ellipse at 50% 30%, rgba(120,100,80,.72) 0%,transparent 60%);
  transition:opacity 2s ease;
}
.sim-ground {
  position:absolute; bottom:0; left:0; right:0; height:20%;
  background:linear-gradient(180deg,#795548,#5D4037);
  transition:background 2s ease;
}
.sim-trees-wrap {
  position:absolute; bottom:18%; left:0; right:0;
  display:flex; align-items:flex-end; justify-content:space-around;
  padding:0 5%;
}
.sim-tree {
  font-size:2.2rem; transition:all 1.2s ease;
  opacity:0; transform:scaleY(0); transform-origin:bottom;
}
.sim-tree.grow { opacity:1; transform:scaleY(1); }

.timeline-wrap { margin-top:.5rem; }
.timeline-slider {
  width:100%; -webkit-appearance:none; appearance:none; height:6px;
  background:var(--gray-light); border-radius:3px; outline:none; cursor:pointer;
}
.timeline-slider::-webkit-slider-thumb {
  -webkit-appearance:none; width:20px; height:20px;
  background:var(--deep-green); border-radius:50%; cursor:pointer;
  box-shadow:0 2px 8px rgba(27,94,32,.4);
}
.timeline-labels {
  display:flex; justify-content:space-between;
  font-size:.78rem; color:var(--gray-dark); margin-top:.4rem;
}

/* ================================================================
   CITIZEN SCIENCE
   ================================================================ */
.citizen-layout {
  display:grid; grid-template-columns:1fr 1fr;
  gap:1.5rem; max-width:1400px; margin:0 auto; padding:2rem;
}

.form-card { background:#fff; border-radius:var(--radius); padding:2rem; box-shadow:var(--shadow); }
.form-card h3 { font-size:1.2rem; font-weight:700; color:var(--deep-green); margin-bottom:1.5rem; }
.form-group { margin-bottom:1.1rem; }
.form-label { display:block; font-weight:600; font-size:.88rem; color:var(--dark); margin-bottom:.4rem; }
.form-input, .form-select, .form-textarea {
  width:100%; padding:.72rem 1rem;
  border:1.5px solid var(--gray); border-radius:var(--radius-sm);
  font-family:'Poppins',sans-serif; font-size:.88rem; color:var(--dark);
  background:#fff; transition:var(--tr); outline:none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color:var(--green-light); box-shadow:0 0 0 3px rgba(67,160,71,.1);
}
.form-textarea { resize:vertical; min-height:90px; }

.file-upload {
  border:2px dashed var(--gray); border-radius:var(--radius-sm);
  padding:1.8rem; text-align:center; cursor:pointer; transition:var(--tr);
}
.file-upload:hover { border-color:var(--green-light); background:var(--green-pale); }
.file-upload .upload-icon { font-size:2.2rem; margin-bottom:.45rem; display:block; }
.file-upload p { font-size:.85rem; color:var(--gray-dark); }
.file-upload label { cursor:pointer; }
#photo-upload { display:none; }

.submit-btn {
  width:100%; padding:1rem;
  background:linear-gradient(135deg,var(--deep-green),var(--green));
  color:#fff; border:none; border-radius:var(--radius-sm);
  font-family:'Poppins',sans-serif; font-size:1rem; font-weight:700;
  cursor:pointer; transition:var(--tr);
  box-shadow:0 4px 15px rgba(27,94,32,.3);
}
.submit-btn:hover {
  transform:translateY(-2px);
  box-shadow:0 0 22px rgba(27,94,32,.5),0 6px 20px rgba(27,94,32,.3);
}

#citizen-map { height:360px; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); }

.leaderboard { background:#fff; border-radius:var(--radius); padding:1.5rem; box-shadow:var(--shadow); }
.leaderboard h3 { font-size:1.15rem; font-weight:700; color:var(--deep-green); margin-bottom:1.3rem; }
.leaderboard-item {
  display:flex; align-items:center; gap:1rem;
  padding:.7rem 0; border-bottom:1px solid var(--gray-light);
}
.leaderboard-item:last-child { border:none; }
.rank {
  width:32px; height:32px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:.82rem; flex-shrink:0;
}
.rank-1 { background:#FFD700; color:#7B6000; }
.rank-2 { background:#C0C0C0; color:#424242; }
.rank-3 { background:#CD7F32; color:#fff; }
.rank-n { background:var(--gray-light); color:var(--gray-dark); }
.lb-name   { flex:1; font-weight:600; font-size:.88rem; }
.lb-points { color:var(--deep-green); font-weight:800; font-size:.88rem; }

/* Badges */
.badges-section { background:#fff; border-radius:var(--radius); padding:1.5rem; box-shadow:var(--shadow); }
.badges-section h3 { font-size:1.15rem; font-weight:700; color:var(--deep-green); margin-bottom:1.1rem; }
.badges-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(95px,1fr));
  gap:.85rem;
}
.badge-item {
  text-align:center; padding:.85rem .5rem;
  border-radius:var(--radius-sm); background:var(--gray-light);
  transition:var(--tr); cursor:pointer; border:2px solid transparent;
}
.badge-item.earned { background:linear-gradient(135deg,#E8F5E9,#F3E5F5); border-color:var(--green-lighter); }
.badge-item:hover  { transform:scale(1.07) rotate(-2deg); }
.badge-emoji { font-size:2rem; display:block; margin-bottom:.4rem; }
.badge-name  { font-size:.68rem; font-weight:700; color:var(--gray-dark); }
.badge-item.earned .badge-name { color:var(--deep-green); }

/* Modal */
.modal-overlay {
  position:fixed; inset:0; background:rgba(0,0,0,.5);
  z-index:2000; display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transition:var(--tr);
  backdrop-filter:blur(6px);
}
.modal-overlay.active { opacity:1; visibility:visible; }
.modal {
  background:#fff; border-radius:var(--radius); padding:2.5rem;
  max-width:420px; width:90%; text-align:center;
  transform:scale(.8); transition:var(--tr);
}
.modal-overlay.active .modal { transform:scale(1); }
.modal-icon { font-size:4rem; margin-bottom:1rem; display:block; animation:pop .5s ease; }
@keyframes pop {
  0%   { transform:scale(0) rotate(-20deg); }
  80%  { transform:scale(1.2) rotate(3deg); }
  100% { transform:scale(1) rotate(0); }
}
.modal h3 { font-size:1.5rem; font-weight:800; color:var(--deep-green); margin-bottom:.5rem; }
.modal p  { color:var(--gray-dark); margin-bottom:1.5rem; font-size:.95rem; }
.modal-close {
  padding:.75rem 2rem; background:var(--deep-green); color:#fff;
  border:none; border-radius:25px;
  font-family:'Poppins',sans-serif; font-size:1rem; font-weight:700;
  cursor:pointer; transition:var(--tr);
}
.modal-close:hover { background:var(--green); transform:translateY(-2px); }

/* ================================================================
   TIPS PAGE
   ================================================================ */
.condition-selector {
  display:flex; gap:.85rem; flex-wrap:wrap;
  justify-content:center; margin-bottom:2.5rem;
}
.condition-btn {
  padding:.65rem 1.4rem; border:2px solid var(--gray); border-radius:25px;
  background:#fff; font-family:'Poppins',sans-serif; font-size:.88rem; font-weight:600;
  cursor:pointer; transition:var(--tr);
  display:flex; align-items:center; gap:.45rem;
}
.condition-btn:hover    { border-color:var(--deep-green); color:var(--deep-green); }
.condition-btn.active   { background:var(--deep-green); color:#fff; border-color:var(--deep-green); }

.tips-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:1.4rem; max-width:1200px; margin:0 auto;
}
.tip-card {
  background:#fff; border-radius:var(--radius); padding:1.5rem;
  box-shadow:var(--shadow); transition:var(--tr);
  border-left:4px solid var(--deep-green); display:none;
}
.tip-card.cat-air     { border-left-color:var(--sky-dark); }
.tip-card.cat-water   { border-left-color:#00838F; }
.tip-card.cat-energy  { border-left-color:var(--orange-dark); }
.tip-card.cat-climate { border-left-color:var(--deep-green); }
.tip-card.visible     { display:block; animation:fadeInUp .45s ease; }
.tip-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-deep); }
.tip-icon-large { font-size:2.5rem; margin-bottom:.85rem; display:block; }
.tip-card:hover .tip-icon-large { animation:wiggle .5s ease; }
@keyframes wiggle {
  0%,100% { transform:rotate(0); }
  25%     { transform:rotate(-10deg); }
  75%     { transform:rotate(10deg); }
}
.tip-card h4 { font-size:1rem; font-weight:700; color:var(--deep-green); margin-bottom:.45rem; }
.tip-card p  { font-size:.87rem; color:var(--gray-dark); line-height:1.65; }
.tip-cat-tag {
  display:inline-block; padding:.18rem .65rem; border-radius:12px;
  font-size:.72rem; font-weight:700; margin-bottom:.65rem;
}

/* Quiz */
.quiz-section { background:var(--dark); padding:5rem 2rem; }
.quiz-section .section-tag  { background:rgba(79,195,247,.18); color:var(--sky-blue); }
.quiz-section .section-title { color:#fff; }
.quiz-section .section-subtitle { color:rgba(255,255,255,.55); }

.quiz-container {
  max-width:720px; margin:0 auto;
  background:rgba(255,255,255,.05); border-radius:var(--radius);
  padding:2.5rem; border:1px solid rgba(255,255,255,.1);
}
.quiz-header {
  display:flex; justify-content:space-between; align-items:center;
  margin-bottom:1.4rem;
}
.quiz-count { font-size:.85rem; color:rgba(255,255,255,.6); }
.quiz-pts   { font-size:.85rem; font-weight:700; color:var(--sky-blue); }
.quiz-progress-bar {
  height:4px; background:rgba(255,255,255,.15); border-radius:2px;
  overflow:hidden; margin-bottom:1.5rem;
}
.quiz-progress-fill { height:100%; background:var(--sky-blue); border-radius:2px; transition:width .35s ease; }

.quiz-question { display:none; }
.quiz-question.active { display:block; animation:fadeInRight .4s ease; }
.quiz-question h3 { font-size:1.1rem; color:#fff; margin-bottom:1.5rem; font-weight:600; line-height:1.5; }
.quiz-options { display:flex; flex-direction:column; gap:.7rem; }
.quiz-option {
  padding:.9rem 1.4rem; background:rgba(255,255,255,.07);
  border:1.5px solid rgba(255,255,255,.14); border-radius:var(--radius-sm);
  color:rgba(255,255,255,.85); cursor:pointer; transition:var(--tr);
  font-family:'Poppins',sans-serif; font-size:.92rem; text-align:left;
}
.quiz-option:hover   { background:rgba(79,195,247,.15); border-color:var(--sky-blue); color:#fff; }
.quiz-option.correct { background:rgba(102,187,106,.22); border-color:var(--green-lighter); color:var(--green-lighter); pointer-events:none; }
.quiz-option.wrong   { background:rgba(229,57,53,.18);  border-color:#EF5350; color:#EF9A9A; pointer-events:none; }
.quiz-option:disabled { pointer-events:none; }

.quiz-score { text-align:center; display:none; }
.quiz-score.active { display:block; animation:fadeIn .5s ease; }
.score-circle {
  width:130px; height:130px; border-radius:50%;
  background:linear-gradient(135deg,var(--deep-green),var(--sky-blue));
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 1.5rem; font-size:2rem; font-weight:800; color:#fff;
  box-shadow:0 8px 30px rgba(79,195,247,.4);
}
.quiz-score h3 { font-size:1.6rem; font-weight:800; color:#fff; margin-bottom:.5rem; }
.quiz-score p  { color:rgba(255,255,255,.7); margin-bottom:1.5rem; }
.quiz-restart  {
  padding:.75rem 2rem; background:var(--sky-blue); color:var(--dark);
  border:none; border-radius:25px; font-family:'Poppins',sans-serif;
  font-size:.95rem; font-weight:700; cursor:pointer; transition:var(--tr);
}
.quiz-restart:hover { background:#81D4FA; transform:translateY(-2px); }

/* Progress bars */
.progress-section {
  background:#fff; border-radius:var(--radius);
  padding:1.5rem; box-shadow:var(--shadow);
  max-width:700px; margin:2rem auto;
}
.progress-section h3 { font-size:1.1rem; font-weight:700; color:var(--deep-green); margin-bottom:1.3rem; }
.progress-row   { margin-bottom:.9rem; }
.progress-label { display:flex; justify-content:space-between; font-size:.85rem; font-weight:600; color:var(--dark); margin-bottom:.4rem; }
.progress-bar   { height:10px; background:var(--gray-light); border-radius:5px; overflow:hidden; }
.progress-fill  { height:100%; border-radius:5px; transition:width 1.2s ease; }
.pf-green  { background:linear-gradient(90deg,var(--green-pale),var(--deep-green)); }
.pf-blue   { background:linear-gradient(90deg,#B3E5FC,var(--sky-dark)); }
.pf-orange { background:linear-gradient(90deg,#FFE0B2,var(--orange-dark)); }

/* ================================================================
   ABOUT PAGE
   ================================================================ */
.about-hero {
  padding:120px 2rem 4rem;
  background:linear-gradient(135deg,var(--deep-green),var(--green),#0288D1);
  text-align:center; color:#fff; position:relative; overflow:hidden;
}
.team-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:1.5rem; max-width:1000px; margin:0 auto;
}
.team-card {
  background:#fff; border-radius:var(--radius);
  padding:2rem 1.5rem; text-align:center;
  box-shadow:var(--shadow); transition:var(--tr);
}
.team-card:hover { transform:translateY(-8px); box-shadow:var(--shadow-deep); }
.team-avatar {
  width:80px; height:80px; border-radius:50%;
  background:linear-gradient(135deg,var(--deep-green),var(--sky-blue));
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 1rem; font-size:2rem;
}
.team-name { font-size:1.05rem; font-weight:700; color:var(--dark); margin-bottom:.25rem; }
.team-role { font-size:.82rem; color:var(--green-light); font-weight:600; }

.tech-stack { display:flex; flex-wrap:wrap; gap:.75rem; justify-content:center; }
.tech-badge {
  background:#fff; border:2px solid var(--green-pale); border-radius:9px;
  padding:.45rem 1rem; font-size:.83rem; font-weight:700; color:var(--deep-green);
  display:flex; align-items:center; gap:.4rem; transition:var(--tr);
}
.tech-badge:hover { background:var(--green-pale); transform:translateY(-3px); }

.timeline-list { list-style:none; max-width:700px; margin:0 auto; }
.timeline-item {
  display:flex; gap:1.5rem; padding-bottom:2rem; position:relative;
}
.timeline-item::before {
  content:''; position:absolute; left:19px; top:38px;
  width:2px; height:calc(100% - 20px);
  background:linear-gradient(180deg,var(--green-light),transparent);
}
.timeline-item:last-child::before { display:none; }
.tl-icon {
  width:40px; height:40px; border-radius:50%; flex-shrink:0;
  background:linear-gradient(135deg,var(--deep-green),var(--green));
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; color:#fff; z-index:1;
  box-shadow:0 4px 12px rgba(27,94,32,.3);
}
.tl-content h4 { font-size:1rem; font-weight:700; color:var(--deep-green); margin-bottom:.3rem; }
.tl-content p  { font-size:.87rem; color:var(--gray-dark); }

/* ================================================================
   GLOBAL GAMIFICATION HUD
   ================================================================ */
.eco-hud {
  position:fixed; top:80px; right:20px; z-index:990;
  background:var(--deep-green); color:#fff;
  padding:.48rem 1rem; border-radius:25px; font-size:.82rem; font-weight:700;
  box-shadow:0 4px 15px rgba(27,94,32,.4);
  display:flex; align-items:center; gap:.4rem;
  cursor:pointer; transition:var(--tr);
  animation:fadeInRight .6s ease 2s both;
}
.eco-hud:hover { background:var(--green); transform:translateY(-2px); }

/* Toast */
.toast {
  position:fixed; bottom:2rem; right:2rem; z-index:3000;
  background:var(--dark); color:#fff; padding:1rem 1.4rem;
  border-radius:var(--radius-sm); font-size:.88rem; font-weight:500;
  box-shadow:var(--shadow-deep); transform:translateX(130%);
  transition:transform .4s cubic-bezier(.34,1.56,.64,1);
  max-width:310px; display:flex; align-items:center; gap:.6rem;
  border-left:4px solid var(--green-lighter);
}
.toast.show { transform:translateX(0); }

/* Spinner */
.spinner {
  width:40px; height:40px; border:4px solid var(--gray-light);
  border-top-color:var(--deep-green); border-radius:50%;
  animation:spin .75s linear infinite; margin:2rem auto;
}
@keyframes spin { to { transform:rotate(360deg); } }

/* ================================================================
   FOOTER
   ================================================================ */
.footer { background:var(--dark); color:rgba(255,255,255,.7); padding:3.5rem 2rem 1.2rem; }
.footer-grid {
  display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:2rem; max-width:1200px; margin:0 auto 2rem;
}
.footer-brand p { margin-top:.9rem; font-size:.88rem; line-height:1.65; }
.footer-title  { color:#fff; font-weight:700; margin-bottom:.9rem; font-size:.95rem; }
.footer-links  { list-style:none; display:flex; flex-direction:column; gap:.45rem; }
.footer-links a { color:rgba(255,255,255,.6); text-decoration:none; font-size:.87rem; transition:var(--tr); }
.footer-links a:hover { color:var(--sky-blue); padding-left:5px; }
.social-icons { display:flex; gap:.7rem; margin-top:1rem; }
.social-icon {
  width:38px; height:38px; background:rgba(255,255,255,.1); border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  text-decoration:none; color:#fff; font-size:.95rem; transition:var(--tr);
}
.social-icon:hover { background:var(--green-light); transform:translateY(-3px); }
.footer-bottom {
  border-top:1px solid rgba(255,255,255,.1); padding-top:1.4rem;
  text-align:center; font-size:.83rem;
  max-width:1200px; margin:0 auto;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:.8rem;
}
.footer-bottom a { color:var(--sky-blue); text-decoration:none; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media(max-width:1100px) {
  .simulation-layout  { grid-template-columns:1fr; }
  .citizen-layout     { grid-template-columns:1fr; }
}
@media(max-width:768px) {
  .nav-links {
    display:none; position:fixed;
    top:70px; left:0; right:0;
    background:var(--deep-green);
    flex-direction:column; padding:1rem; gap:.25rem;
    box-shadow:0 10px 30px rgba(0,0,0,.3);
  }
  .nav-links.open { display:flex; animation:fadeInDown .25s ease; }
  .nav-toggle      { display:flex; }
  .hero-cta        { flex-direction:column; align-items:center; }
  .panels-grid     { grid-template-columns:1fr; }
  .action-panel    { position:static; }
  .footer-bottom   { flex-direction:column; }
}
@media(max-width:480px) {
  section { padding:3rem 1rem; }
  .simulation-layout,.citizen-layout,.dashboard-container { padding:1rem; }
}

/* ================================================================
   BACK TO TOP
   ================================================================ */
.back-to-top {
  position: fixed; bottom: 2rem; left: 2rem; z-index: 989;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--deep-green); color: #fff; border: none; cursor: pointer;
  font-size: .95rem; box-shadow: 0 4px 15px rgba(27,94,32,.4);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(20px);
  transition: all .35s ease;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--green); transform: translateY(-3px); box-shadow: 0 6px 20px rgba(27,94,32,.5); }

/* ================================================================
   MISC UTILITIES
   ================================================================ */
.text-center { text-align:center; }
.mt-1  { margin-top:.5rem; }
.mt-2  { margin-top:1rem; }
.mt-3  { margin-top:1.5rem; }
.mb-2  { margin-bottom:1rem; }
.mb-3  { margin-bottom:1.5rem; }
.green-text { color:var(--deep-green); }
.blue-text  { color:var(--sky-blue); }

/* ================================================================
   HERO TICKER  (index.html)
   ================================================================ */
.hero-ticker {
  display: inline-flex; align-items: center; gap: .55rem;
  margin-top: 1.8rem;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 30px;
  padding: .4rem 1.1rem;
  font-size: .82rem;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  backdrop-filter: blur(8px);
  transition: var(--tr);
}
.ticker-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: #69F0AE; flex-shrink: 0;
  animation: dot-pulse 2s ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(105,240,174,.5);
}
@keyframes dot-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(105,240,174,.5); }
  50%      { box-shadow: 0 0 0 6px rgba(105,240,174,0); }
}

/* ================================================================
   WHY IT MATTERS  (index.html)
   ================================================================ */
.why-section {
  background: var(--dark2);
  padding: 5rem 0;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.why-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  padding: 1.9rem 1.5rem;
  text-align: center;
  transition: var(--tr);
}
.why-card:hover {
  background: rgba(255,255,255,.11);
  transform: translateY(-6px);
  border-color: rgba(255,255,255,.22);
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}
.why-icon  { font-size: 2.3rem; margin-bottom: .75rem; }
.why-number {
  font-size: 2.4rem; font-weight: 800; line-height: 1;
  color: #EF5350; margin-bottom: .35rem;
}
.why-label {
  font-size: .9rem; font-weight: 700;
  color: rgba(255,255,255,.9); margin-bottom: .4rem;
}
.why-context {
  font-size: .77rem;
  color: rgba(255,255,255,.5);
  font-style: italic;
  line-height: 1.5;
}

/* ================================================================
   HEALTH ADVISORY PANEL (dashboard.html)
   ================================================================ */
.advisory-tag {
  display: inline-block;
  padding: .25rem .7rem;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 700;
  margin-right: .35rem;
  margin-bottom: .35rem;
}
.advisory-tag.warn  { background:#FFF8E1; color:#F57C00; border:1px solid #FFB74D; }
.advisory-tag.alert { background:#FFEBEE; color:#C62828; border:1px solid #EF5350; }
.advisory-tag.ok    { background:#E8F5E9; color:#2E7D32; border:1px solid #66BB6A; }

/* ================================================================
   PERSONAL FOOTPRINT CALCULATOR (simulation.html)
   ================================================================ */
.footprint-calc {
  background: #fff;
  border: 2px solid var(--green-pale);
  border-radius: var(--radius);
  padding: 1.6rem;
  margin-bottom: 2rem;
}
.footprint-calc h3 {
  font-size: 1rem; font-weight: 800; color: var(--deep-green); margin-bottom: 1.1rem;
  display: flex; align-items: center; gap: .5rem;
}
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.1rem;
}
.calc-field label {
  display: block; font-size: .78rem; font-weight: 700;
  color: var(--gray-dark); margin-bottom: .35rem; text-transform: uppercase; letter-spacing: .5px;
}
.calc-field select {
  width: 100%; padding: .5rem .75rem;
  border: 1.5px solid var(--gray);
  border-radius: var(--radius-sm);
  font-family: 'Poppins', sans-serif;
  font-size: .85rem; color: var(--dark);
  background: var(--gray-light);
  transition: var(--tr); cursor: pointer;
  appearance: none;
}
.calc-field select:focus { outline: none; border-color: var(--green-light); background: #fff; }
.footprint-result {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: .75rem;
  background: var(--gray-light);
  border-radius: var(--radius-sm);
  padding: .85rem 1.1rem;
}
.fp-baseline { font-size: .88rem; color: var(--gray-dark); }
.fp-baseline strong { color: var(--deep-green); font-size: 1.1rem; }
.fp-compare {
  font-size: .78rem; color: var(--gray-dark);
  display: flex; align-items: center; gap: .5rem;
}
.fp-bar {
  height: 8px; flex: 1; min-width: 100px;
  background: var(--gray); border-radius: 4px; overflow: hidden;
}
.fp-bar-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, #43A047, #1B5E20);
  transition: width 1s ease;
}

/* ================================================================
   GLOBAL IMPACT STRIP (citizen.html)
   ================================================================ */
.impact-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  background: linear-gradient(135deg, var(--deep-green), var(--green-light));
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  margin-bottom: 2rem;
  color: #fff;
}
.impact-strip-item { text-align: center; }
.impact-strip-num  { font-size: 2rem; font-weight: 800; color: #fff; line-height: 1; }
.impact-strip-label{ font-size: .78rem; color: rgba(255,255,255,.8); margin-top: .3rem; font-weight: 600; }

/* ================================================================
   ECOSCORE CARD (tips.html)
   ================================================================ */
.ecoscore-card {
  max-width: 680px; margin: 0 auto 3rem;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex; align-items: center; gap: 2rem;
  flex-wrap: wrap;
  color: #fff;
  box-shadow: var(--shadow-deep);
  position: relative; overflow: hidden;
}
.ecoscore-card::before {
  content: '';
  position: absolute; top: -40px; right: -40px;
  width: 140px; height: 140px; border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.ecoscore-ring {
  flex-shrink: 0;
  width: 90px; height: 90px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.2rem; font-weight: 900;
  border: 5px solid #69F0AE;
  background: rgba(105,240,174,.15);
  color: #69F0AE;
}
.ecoscore-info { flex: 1; min-width: 180px; }
.ecoscore-title { font-size: .75rem; font-weight: 700; color: rgba(255,255,255,.6); text-transform: uppercase; letter-spacing: 1px; margin-bottom: .25rem; }
.ecoscore-name  { font-size: 1.25rem; font-weight: 800; margin-bottom: .3rem; }
.ecoscore-msg   { font-size: .82rem; color: rgba(255,255,255,.7); line-height: 1.5; }
.ecoscore-bars  { flex: 1; min-width: 180px; display: flex; flex-direction: column; gap: .5rem; }
.sc-bar-row     { display: flex; align-items: center; gap: .6rem; font-size: .76rem; color: rgba(255,255,255,.75); }
.sc-bar         { flex: 1; height: 6px; background: rgba(255,255,255,.15); border-radius: 3px; overflow: hidden; }
.sc-bar-fill    { height: 100%; border-radius: 3px; transition: width 1s ease; }

/* ================================================================
   GLOBAL ADVANCED UX LAYER
   ================================================================ */
.network-banner {
  position: fixed; top: 78px; left: 50%; transform: translateX(-50%) translateY(-12px);
  background: #1B5E20; color: #fff; z-index: 1300;
  border-radius: 999px; padding: .55rem .95rem;
  box-shadow: 0 8px 28px rgba(0,0,0,.25);
  display: flex; align-items: center; gap: .5rem;
  font-size: .78rem; opacity: 0; pointer-events: none;
  transition: var(--tr);
}
.network-banner .net-sub { color: rgba(255,255,255,.8); }
.network-banner.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.network-banner.offline { background: #C62828; }

.utility-fab {
  position: fixed; right: 1.4rem;
  width: 44px; height: 44px; border-radius: 50%;
  border: none; cursor: pointer; z-index: 1150;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  font-size: 1.1rem; font-weight: 800;
  transition: var(--tr);
}
.utility-fab:hover { transform: translateY(-2px); }
.utility-fab:focus-visible { outline: 3px solid rgba(79,195,247,.45); outline-offset: 2px; }
.cmdk-fab { bottom: 2rem; background: var(--deep-green); color: #fff; }
.help-fab { bottom: 5.1rem; background: var(--sky-dark); color: #fff; }

.cmdk-overlay {
  position: fixed; inset: 0; z-index: 1400;
  background: rgba(10, 18, 28, .52);
  backdrop-filter: blur(6px);
  display: none; align-items: flex-start; justify-content: center;
  padding: 12vh 1rem 1rem;
}
.cmdk-overlay.show { display: flex; }
.cmdk-dialog {
  width: min(680px, 100%); background: #fff;
  border-radius: 16px; box-shadow: var(--shadow-deep);
  overflow: hidden; border: 1px solid rgba(0,0,0,.06);
}
.cmdk-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: .95rem 1rem .7rem; font-weight: 700; color: var(--deep-green);
}
.cmdk-hint {
  font-size: .7rem; color: var(--gray-dark); background: var(--gray-light);
  border-radius: 999px; padding: .2rem .55rem;
}
.cmdk-input {
  width: calc(100% - 1.6rem); margin: 0 .8rem .7rem;
  border: 1.5px solid #E0E0E0; border-radius: 10px;
  padding: .7rem .8rem; font-family: 'Poppins', sans-serif; font-size: .92rem;
}
.cmdk-input:focus { outline: none; border-color: var(--sky-dark); }
.cmdk-list { max-height: 320px; overflow: auto; padding: 0 .55rem .6rem; }
.cmdk-item {
  width: 100%; border: none; border-radius: 10px; cursor: pointer;
  background: transparent; text-align: left;
  padding: .7rem .75rem; margin-bottom: .3rem;
  display: flex; flex-direction: column; gap: .15rem;
}
.cmdk-item:hover, .cmdk-item.active { background: #EEF7FF; }
.cmdk-item-title { font-size: .9rem; font-weight: 700; color: var(--dark); }
.cmdk-item-hint { font-size: .76rem; color: var(--gray-dark); }
.cmdk-empty { padding: 1rem; color: var(--gray-dark); font-size: .85rem; }

.help-overlay {
  position: fixed; inset: 0; z-index: 1400;
  background: rgba(10,18,28,.52); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center; padding: 1rem;
}
.help-overlay.show { display: flex; }
.help-dialog {
  width: min(520px, 100%); background: #fff;
  border-radius: 16px; padding: 1.2rem 1.2rem 1rem;
  box-shadow: var(--shadow-deep);
}
.help-dialog h3 { color: var(--deep-green); font-size: 1.2rem; margin-bottom: .2rem; }
.help-sub { color: var(--gray-dark); font-size: .8rem; margin-bottom: .5rem; }
.help-list { margin: 0 0 .8rem 1rem; color: var(--dark); display: grid; gap: .4rem; font-size: .88rem; }
.help-shortcuts { display: grid; gap: .35rem; margin-bottom: .9rem; font-size: .82rem; color: var(--gray-dark); }
.help-shortcuts kbd {
  border: 1px solid #cfd8dc; border-bottom-width: 2px;
  border-radius: 6px; padding: .05rem .35rem; background: #f7f9fb; color: #263238;
}
.help-close {
  border: none; background: var(--deep-green); color: #fff;
  padding: .55rem .95rem; border-radius: 9px; font-family: 'Poppins', sans-serif;
  font-weight: 700; cursor: pointer;
}

@media(max-width:768px) {
  .network-banner { top: 68px; left: 1rem; right: 1rem; transform: translateY(-12px); border-radius: 12px; }
  .network-banner.show { transform: translateY(0); }
  .utility-fab { right: 1rem; }
}