/* =========================================================
   Chiro City Administration — Design System
   Style: Accessible & Ethical + Smart City
   Typography: Lexend / Source Sans 3
   Colors: High-contrast Navy + Blue palette
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@300;400;500;600;700&family=Source+Sans+3:wght@300;400;500;600;700&display=swap');

/* ── Design Tokens ───────────────────────────────────────── */
:root {
  --color-primary:     #0F172A;
  --color-on-primary:  #FFFFFF;
  --color-secondary:   #334155;
  --color-accent:      #0369A1;
  --color-accent-light:#0EA5E9;
  --color-accent-hover:#025F91;
  --color-background:  #F8FAFC;
  --color-foreground:  #020617;
  --color-muted:       #E8ECF1;
  --color-border:      #E2E8F0;
  --color-destructive: #DC2626;
  --color-ring:        #0F172A;
  --color-success:     #059669;
  --color-warning:     #D97706;
  --color-smart-teal:  #0D9488;
  --color-smart-purple:#6D28D9;
  --color-smart-green: #15803D;

  --font-heading: 'Lexend', sans-serif;
  --font-body:    'Source Sans 3', sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

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

  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(15,23,42,0.08);
  --shadow:    0 4px 6px rgba(15,23,42,0.10);
  --shadow-md: 0 8px 16px rgba(15,23,42,0.12);
  --shadow-lg: 0 16px 32px rgba(15,23,42,0.15);

  --transition: 200ms ease;
  --transition-slow: 300ms ease;

  --container-max: 1280px;
  --header-height: 72px;
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-foreground);
  background: var(--color-background);
  line-height: 1.6;
  min-height: 100vh;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; }

/* Skip to content — accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition);
}
.skip-link:focus { top: var(--space-4); }

/* Focus ring */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ── Layout Utilities ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section { padding-block: var(--space-20); }
.section-sm { padding-block: var(--space-12); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--space-6); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap { display: flex; gap: var(--space-4); }

.text-center { text-align: center; }

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}
h1 { font-size: clamp(2rem, 5vw, var(--text-5xl)); }
h2 { font-size: clamp(1.6rem, 3.5vw, var(--text-4xl)); }
h3 { font-size: clamp(1.25rem, 2.5vw, var(--text-2xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-title { margin-bottom: var(--space-4); }
.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-secondary);
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem var(--space-6);
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  min-height: 44px;
  min-width: 44px;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}
.btn-secondary:hover {
  background: var(--color-accent);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--color-on-primary);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}
.btn-sm { padding: 0.375rem var(--space-4); font-size: var(--text-sm); }
.btn-lg { padding: 0.875rem var(--space-8); font-size: var(--text-lg); }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-slow), transform var(--transition-slow);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}
.card-icon-accent { background: rgba(3,105,161,0.1); color: var(--color-accent); }
.card-icon-teal   { background: rgba(13,148,136,0.1); color: var(--color-smart-teal); }
.card-icon-purple { background: rgba(109,40,217,0.1); color: var(--color-smart-purple); }
.card-icon-green  { background: rgba(21,128,61,0.1);  color: var(--color-smart-green); }
.card-icon-warning{ background: rgba(217,119,6,0.1);  color: var(--color-warning); }

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}
.badge-blue   { background: rgba(3,105,161,0.12); color: var(--color-accent); }
.badge-green  { background: rgba(5,150,105,0.12); color: var(--color-success); }
.badge-teal   { background: rgba(13,148,136,0.12); color: var(--color-smart-teal); }
.badge-purple { background: rgba(109,40,217,0.12); color: var(--color-smart-purple); }
.badge-live   { background: rgba(5,150,105,0.12); color: var(--color-success); }
.badge-live::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse-dot 1.5s infinite;
}

/* ── Stat / KPI ───────────────────────────────────────────── */
.stat-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}
.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--color-secondary);
  margin-top: var(--space-2);
}

/* ── Forms ────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label { font-weight: 600; font-size: var(--text-sm); color: var(--color-primary); }
.form-input, .form-select, .form-textarea {
  padding: 0.625rem var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--text-base);
  color: var(--color-foreground);
  background: #fff;
  min-height: 44px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(3,105,161,0.15);
  outline: none;
}
.form-textarea { min-height: 120px; resize: vertical; }

/* ── Header ───────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  inset-inline: 0;
  height: var(--header-height);
  background: var(--color-primary);
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  flex-shrink: 0;
}
.logo-icon {
  width: 40px; height: 40px;
  background: var(--color-accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-sub {
  font-size: var(--text-xs);
  font-weight: 400;
  opacity: 0.7;
  display: block;
  margin-top: -2px;
  letter-spacing: 0.04em;
}

.nav { display: flex; align-items: center; gap: var(--space-1); }
.nav-link {
  color: rgba(255,255,255,0.8);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.12);
}

.header-actions { display: flex; align-items: center; gap: var(--space-3); }

.nav-toggle {
  display: none;
  color: #fff;
  padding: var(--space-2);
  border-radius: var(--radius);
}
.nav-toggle:hover { background: rgba(255,255,255,0.12); }

/* ── Mobile nav ───────────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  inset-inline: 0;
  background: var(--color-primary);
  z-index: 999;
  padding: var(--space-4);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
}

/* ── Page wrapper ─────────────────────────────────────────── */
.page-content { padding-top: var(--header-height); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1E3A5F 50%, #0F2D4A 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  padding-block: var(--space-24);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(3,105,161,0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(13,148,136,0.2) 0%, transparent 50%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(3,105,161,0.25);
  border: 1px solid rgba(14,165,233,0.4);
  color: var(--color-accent-light);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-6);
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--space-6);
  color: #fff;
}
.hero-title span { color: var(--color-accent-light); }
.hero-subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-8);
  max-width: 520px;
}
.hero-actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/* Smart City Dashboard Preview Card */
.hero-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.hero-dash-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  backdrop-filter: blur(10px);
}
.hero-dash-card.span-2 { grid-column: span 2; }
.hero-dash-label { font-size: var(--text-xs); color: rgba(255,255,255,0.6); margin-bottom: var(--space-2); }
.hero-dash-value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: #fff;
}
.hero-dash-sub { font-size: var(--text-xs); color: rgba(255,255,255,0.5); margin-top: var(--space-1); }

/* ── Ticker ───────────────────────────────────────────────── */
.ticker {
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-2) 0;
  overflow: hidden;
}
.ticker-inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  animation: ticker-scroll 30s linear infinite;
  white-space: nowrap;
  font-size: var(--text-sm);
  font-weight: 500;
}
.ticker-item { display: flex; align-items: center; gap: var(--space-2); }
.ticker-dot { width: 4px; height: 4px; border-radius: 50%; background: rgba(255,255,255,0.5); flex-shrink: 0; }

/* ── Smart Services Grid ──────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-6); }

/* ── IoT Stats bar ────────────────────────────────────────── */
.iot-bar {
  background: var(--color-primary);
  color: #fff;
  padding-block: var(--space-12);
}
.iot-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-1); }
.iot-stat {
  text-align: center;
  padding: var(--space-6);
  border-right: 1px solid rgba(255,255,255,0.1);
}
.iot-stat:last-child { border-right: none; }
.iot-number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-accent-light);
}
.iot-label { font-size: var(--text-sm); color: rgba(255,255,255,0.7); margin-top: var(--space-2); }
.iot-icon { margin-inline: auto; margin-bottom: var(--space-3); color: var(--color-accent-light); }

/* ── Smart Initiatives ────────────────────────────────────── */
.initiative-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: box-shadow var(--transition-slow), transform var(--transition-slow);
}
.initiative-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.initiative-img {
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.3);
  position: relative;
  overflow: hidden;
}
.initiative-img-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
}
.initiative-body { padding: var(--space-6); }
.initiative-meta { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-3); }

/* ── News ─────────────────────────────────────────────────── */
.news-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.news-img {
  height: 180px;
  background: linear-gradient(135deg, #1E3A5F, #0369A1);
  display: flex;
  align-items: center;
  justify-content: center;
}
.news-body { padding: var(--space-5); }
.news-date { font-size: var(--text-xs); color: var(--color-secondary); margin-bottom: var(--space-2); }
.news-title { font-size: var(--text-lg); font-weight: 600; color: var(--color-primary); margin-bottom: var(--space-3); line-height: 1.3; }
.news-excerpt { font-size: var(--text-sm); color: var(--color-secondary); line-height: 1.6; }

/* ── Alert Banner ─────────────────────────────────────────── */
.alert-bar {
  background: rgba(217,119,6,0.08);
  border: 1px solid rgba(217,119,6,0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}
.alert-bar-icon { color: var(--color-warning); flex-shrink: 0; }
.alert-bar-text { font-size: var(--text-sm); color: var(--color-foreground); }
.alert-bar-text strong { color: var(--color-warning); }

/* ── Map Placeholder ──────────────────────────────────────── */
.city-map {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 100%);
  border-radius: var(--radius-xl);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  color: rgba(255,255,255,0.6);
}
.map-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(3,105,161,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(3,105,161,0.15) 1px, transparent 1px);
  background-size: 40px 40px;
}
.map-dot {
  position: absolute;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--color-accent-light);
  box-shadow: 0 0 0 4px rgba(14,165,233,0.3);
  animation: map-pulse 2s infinite;
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.8);
  padding-block: var(--space-16) var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--space-8);
}
.footer-brand p { font-size: var(--text-sm); line-height: 1.7; margin-top: var(--space-4); opacity: 0.7; }
.footer-col h4 { color: #fff; font-size: var(--text-base); margin-bottom: var(--space-4); }
.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-link {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-link:hover { color: var(--color-accent-light); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer-bottom p { font-size: var(--text-sm); opacity: 0.6; }
.footer-social { display: flex; gap: var(--space-3); }
.social-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: background var(--transition), color var(--transition);
}
.social-btn:hover { background: var(--color-accent); color: #fff; }

/* ── Page hero (inner pages) ──────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1E3A5F 100%);
  color: #fff;
  padding-block: var(--space-20);
  text-align: center;
}
.page-hero h1 { color: #fff; margin-bottom: var(--space-4); }
.page-hero p { font-size: var(--text-lg); color: rgba(255,255,255,0.8); max-width: 600px; margin-inline: auto; }

/* ── Breadcrumb ───────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-secondary);
  margin-bottom: var(--space-8);
}
.breadcrumb a { color: var(--color-accent); }
.breadcrumb-sep { color: var(--color-border); }

/* ── Tabs ─────────────────────────────────────────────────── */
.tabs { border-bottom: 2px solid var(--color-border); margin-bottom: var(--space-8); }
.tab-list { display: flex; gap: 0; overflow-x: auto; }
.tab-btn {
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
  min-height: 44px;
}
.tab-btn:hover { color: var(--color-accent); }
.tab-btn.active { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Table ────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  background: var(--color-muted);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-border);
}
.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-foreground);
}
.data-table tr:hover td { background: rgba(3,105,161,0.04); }
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }

/* ── Progress bar ─────────────────────────────────────────── */
.progress-bar {
  height: 8px;
  background: var(--color-muted);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  transition: width 1s ease;
}

/* ── Accordion ────────────────────────────────────────────── */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-primary);
  background: #fff;
  min-height: 44px;
  text-align: left;
  transition: background var(--transition);
}
.accordion-header:hover { background: var(--color-muted); }
.accordion-header[aria-expanded="true"] { background: rgba(3,105,161,0.05); color: var(--color-accent); }
.accordion-icon { transition: transform var(--transition); color: var(--color-secondary); }
.accordion-header[aria-expanded="true"] .accordion-icon { transform: rotate(180deg); color: var(--color-accent); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) ease, padding var(--transition-slow);
  background: #fff;
}
.accordion-body.open {
  max-height: 600px;
  padding: 0 var(--space-6) var(--space-5);
}
.accordion-body p { font-size: var(--text-sm); color: var(--color-secondary); line-height: 1.7; }

/* ── Back to top ──────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px; height: 44px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 100;
  box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-2px); background: var(--color-accent-hover); }

/* ── Animations ───────────────────────────────────────────── */
@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes map-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(14,165,233,0.3); }
  50%       { box-shadow: 0 0 0 10px rgba(14,165,233,0.1); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
@keyframes count-up {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

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

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .hero-grid { gap: var(--space-10); }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .hero-visual { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .iot-stats { grid-template-columns: repeat(2, 1fr); }
  .iot-stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding-block: var(--space-12); }
  .hero { padding-block: var(--space-16); }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--space-4); }
  .iot-stats { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
}

/* =========================================================
   EXTENSION: 3D & Hyperrealism + AI-Native UI
   Added for: City Corridor Project, Gallery, AI Assistant
   ========================================================= */

/* ── 3D & Hyperrealism Tokens ─────────────────────────────── */
:root {
  --3d-shadow-near:  0 2px 4px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.25);
  --3d-shadow-mid:   0 8px 32px rgba(0,0,0,0.35), 0 24px 64px rgba(0,0,0,0.2);
  --3d-shadow-far:   0 24px 80px rgba(0,0,0,0.45), 0 4px 8px rgba(0,0,0,0.3);
  --3d-highlight:    rgba(255,255,255,0.18);
  --3d-depth-1:      translateZ(0) translateY(0);
  --3d-depth-2:      translateZ(10px) translateY(-4px);
  --3d-depth-3:      translateZ(24px) translateY(-8px);
  --glass-bg:        rgba(255,255,255,0.07);
  --glass-border:    rgba(255,255,255,0.15);
  --glass-blur:      blur(20px) saturate(1.6);
  --ai-glow-blue:    0 0 24px rgba(14,165,233,0.5), 0 0 60px rgba(14,165,233,0.2);
  --ai-glow-teal:    0 0 24px rgba(13,148,136,0.5), 0 0 60px rgba(13,148,136,0.2);
  --ai-glow-purple:  0 0 24px rgba(109,40,217,0.5), 0 0 60px rgba(109,40,217,0.2);
  --ai-pulse-color:  #0EA5E9;
  --corridor-gold:   #F59E0B;
  --corridor-steel:  #94A3B8;
}

/* ── 3D Card ──────────────────────────────────────────────── */
.card-3d {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--3d-shadow-near);
  transform: perspective(800px) rotateX(0deg);
  transform-style: preserve-3d;
  transition: transform 400ms cubic-bezier(0.23,1,0.32,1), box-shadow 400ms ease;
  position: relative;
}
.card-3d::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--3d-highlight) 0%, transparent 60%);
  pointer-events: none;
  border: 1px solid rgba(255,255,255,0.25);
}
.card-3d:hover {
  transform: perspective(800px) rotateX(-3deg) rotateY(3deg) translateY(-6px);
  box-shadow: var(--3d-shadow-far);
}

/* ── Glassmorphism Panel ──────────────────────────────────── */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--3d-shadow-mid);
}
.glass-panel-dark {
  background: rgba(15,23,42,0.6);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
}

/* ── AI-Native Glow Borders ───────────────────────────────── */
.ai-glow-blue  { box-shadow: var(--ai-glow-blue);  border-color: rgba(14,165,233,0.4) !important; }
.ai-glow-teal  { box-shadow: var(--ai-glow-teal);  border-color: rgba(13,148,136,0.4) !important; }
.ai-glow-purple{ box-shadow: var(--ai-glow-purple); border-color: rgba(109,40,217,0.4) !important; }

/* ── AI Scan Line Animation ───────────────────────────────── */
@keyframes ai-scan {
  0%   { top: 0; opacity: 0.8; }
  100% { top: 100%; opacity: 0; }
}
@keyframes ai-blink {
  0%,100% { opacity: 1; } 50% { opacity: 0.3; }
}
@keyframes ai-float {
  0%,100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-8px) scale(1.02); }
}
@keyframes ai-orbit {
  from { transform: rotate(0deg) translateX(60px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(60px) rotate(-360deg); }
}
@keyframes threed-rotate {
  0%   { transform: perspective(600px) rotateY(0deg); }
  100% { transform: perspective(600px) rotateY(360deg); }
}
@keyframes shimmer-3d {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes corridor-build {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0% 0 0); }
}
@keyframes depth-rise {
  from { opacity:0; transform: perspective(600px) translateZ(-80px) translateY(24px); }
  to   { opacity:1; transform: perspective(600px) translateZ(0) translateY(0); }
}
@keyframes neon-pulse {
  0%,100% { text-shadow: 0 0 8px var(--ai-pulse-color), 0 0 20px var(--ai-pulse-color); }
  50%     { text-shadow: 0 0 16px var(--ai-pulse-color), 0 0 48px var(--ai-pulse-color), 0 0 80px rgba(14,165,233,0.3); }
}
@keyframes grid-flow {
  from { background-position: 0 0; }
  to   { background-position: 0 40px; }
}

/* ── 3D Depth Rise ────────────────────────────────────────── */
.depth-rise {
  opacity: 0;
  animation: depth-rise 0.7s cubic-bezier(0.23,1,0.32,1) forwards;
}
.depth-rise.d1 { animation-delay: 0.1s; }
.depth-rise.d2 { animation-delay: 0.2s; }
.depth-rise.d3 { animation-delay: 0.3s; }
.depth-rise.d4 { animation-delay: 0.4s; }

/* ── AI Neon Text ─────────────────────────────────────────── */
.neon-text {
  color: var(--ai-pulse-color);
  animation: neon-pulse 2.5s ease-in-out infinite;
  font-family: var(--font-heading);
  font-weight: 700;
}

/* ── AI Typing Cursor ─────────────────────────────────────── */
.ai-cursor::after {
  content: '|';
  animation: ai-blink 1s step-end infinite;
  color: var(--ai-pulse-color);
  margin-left: 2px;
}

/* ── AI Floating Badge ────────────────────────────────────── */
.ai-float { animation: ai-float 4s ease-in-out infinite; }

/* ── AI Background Grid ───────────────────────────────────── */
.ai-grid-bg {
  position: relative;
  overflow: hidden;
}
.ai-grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(14,165,233,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: grid-flow 8s linear infinite;
  pointer-events: none;
}

/* ── AI Gradient Text ─────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(90deg, var(--color-accent-light), var(--color-smart-teal), var(--color-smart-purple));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer-3d 3s linear infinite;
}

/* ── 3D Building Block ────────────────────────────────────── */
.building-3d {
  display: inline-block;
  transform-style: preserve-3d;
  animation: ai-float 6s ease-in-out infinite;
}

/* ── Holographic border ───────────────────────────────────── */
.holo-border {
  border: 1px solid transparent;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(135deg, var(--color-accent-light), var(--color-smart-teal), var(--color-smart-purple), var(--color-accent-light)) border-box;
  background-size: 200% 200%;
  animation: shimmer-3d 3s linear infinite;
}
.holo-border-dark {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--color-primary), var(--color-primary)) padding-box,
    linear-gradient(135deg, var(--color-accent-light), var(--color-smart-teal), var(--color-smart-purple), var(--color-accent-light)) border-box;
  background-size: 200% 200%;
  animation: shimmer-3d 3s linear infinite;
}

/* ── Corridor Project Styles ──────────────────────────────── */
.corridor-hero {
  background: linear-gradient(160deg, #050D1A 0%, #0A1628 40%, #0D1F3C 70%, #071222 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-block: var(--space-24);
}
.corridor-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(14,165,233,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.08) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-flow 10s linear infinite;
}
.corridor-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.corridor-orb-1 { width: 500px; height: 500px; background: radial-gradient(circle, rgba(3,105,161,0.25), transparent 70%); top: -15%; left: -10%; }
.corridor-orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(13,148,136,0.2), transparent 70%); bottom: -10%; right: -5%; }
.corridor-orb-3 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(245,158,11,0.12), transparent 70%); top: 30%; left: 50%; }

/* 3D Building Visualizer */
.building-viz {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 8px;
  height: 320px;
  perspective: 800px;
}
.bldg {
  border-radius: 4px 4px 0 0;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.3s ease, filter 0.3s ease;
  cursor: pointer;
  flex-shrink: 0;
}
.bldg:hover {
  transform: translateY(-12px) scale(1.04);
  filter: brightness(1.25) drop-shadow(0 -4px 20px rgba(14,165,233,0.6));
}
.bldg-face-front {
  position: absolute;
  inset: 0;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, transparent 100%);
}
.bldg-windows {
  position: absolute;
  inset: 8px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  align-content: start;
}
.bldg-win {
  aspect-ratio: 1;
  border-radius: 2px;
  background: rgba(255,255,255,0.6);
  animation: ai-blink 2s ease-in-out infinite;
}
.bldg-win.off { background: rgba(255,255,255,0.15); animation: none; }

/* Corridor Phase cards */
.phase-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: background 300ms ease, border-color 300ms ease, transform 300ms ease;
}
.phase-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.phase-card.gold::before { background: linear-gradient(90deg, var(--corridor-gold), #FCD34D); }
.phase-card.blue::before { background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light)); }
.phase-card.teal::before { background: linear-gradient(90deg, var(--color-smart-teal), #2DD4BF); }
.phase-card.purple::before { background: linear-gradient(90deg, var(--color-smart-purple), #A78BFA); }
.phase-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-4px);
}
.phase-number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-2);
}

/* Corridor Timeline */
.corridor-timeline {
  position: relative;
  padding-left: var(--space-10);
}
.corridor-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-smart-teal), var(--color-smart-purple));
}
.ct-item { position: relative; margin-bottom: var(--space-8); }
.ct-dot {
  position: absolute;
  left: -36px;
  top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 3px solid var(--color-primary);
  box-shadow: 0 0 0 3px currentColor, var(--ai-glow-blue);
}
.ct-dot.active { background: var(--color-accent-light); color: var(--color-accent-light); }
.ct-dot.done   { background: var(--color-smart-teal);   color: var(--color-smart-teal); }
.ct-dot.future { background: var(--corridor-steel);     color: var(--corridor-steel); }
.ct-year { font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 4px; }
.ct-title { font-family: var(--font-heading); font-weight: 600; font-size: var(--text-lg); color: #fff; margin-bottom: var(--space-2); }
.ct-desc { font-size: var(--text-sm); color: rgba(255,255,255,0.65); line-height: 1.6; }

/* 3D Stats Ring */
.ring-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.ring-wrap {
  position: relative;
  width: 100px; height: 100px;
}
.ring-svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track { fill: none; stroke: rgba(255,255,255,0.1); stroke-width: 8; }
.ring-fill  { fill: none; stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 1.5s cubic-bezier(0.23,1,0.32,1); }
.ring-label {
  position: absolute;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xl);
  color: #fff;
}

/* ── Gallery Styles ───────────────────────────────────────── */
.gallery-hero {
  background: linear-gradient(135deg, #050D1A 0%, #0F172A 60%, #1A0A2E 100%);
  padding-block: var(--space-20);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.gallery-filter {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-10);
}
.gallery-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1.5px solid var(--color-border);
  color: var(--color-secondary);
  background: #fff;
  transition: all var(--transition);
  min-height: 36px;
}
.gallery-btn:hover, .gallery-btn.active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  box-shadow: var(--ai-glow-blue);
}

/* Masonry-like grid */
.gallery-grid {
  columns: 4;
  column-gap: var(--space-4);
}
.gallery-item {
  break-inside: avoid;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  display: block;
}
.gallery-item-inner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--3d-shadow-near);
  transition: transform 350ms cubic-bezier(0.23,1,0.32,1), box-shadow 350ms ease;
}
.gallery-item-inner:hover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: var(--3d-shadow-far);
}
.gallery-img {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
  transition: transform 500ms ease;
}
.gallery-item-inner:hover .gallery-img { transform: scale(1.08); }
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,0.9) 0%, rgba(15,23,42,0.3) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 300ms ease;
  display: flex;
  align-items: flex-end;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}
.gallery-item-inner:hover .gallery-overlay { opacity: 1; }
.gallery-caption { color: #fff; }
.gallery-caption h4 { font-size: var(--text-sm); font-weight: 700; margin-bottom: 2px; }
.gallery-caption p  { font-size: var(--text-xs); color: rgba(255,255,255,0.7); }
.gallery-zoom {
  position: absolute;
  top: var(--space-3); right: var(--space-3);
  width: 32px; height: 32px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  opacity: 0;
  transition: opacity 300ms ease, background 200ms ease;
  backdrop-filter: blur(8px);
}
.gallery-item-inner:hover .gallery-zoom { opacity: 1; }
.gallery-zoom:hover { background: var(--color-accent); }

/* ── Lightbox ─────────────────────────────────────────────── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(5,10,20,0.95);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}
.lightbox.open { display: flex; }
.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.lightbox-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--3d-shadow-far), var(--ai-glow-blue);
}
.lightbox-img {
  max-height: 72vh;
  max-width: 80vw;
  object-fit: contain;
  display: block;
  border-radius: var(--radius-xl);
}
.lightbox-caption {
  color: #fff;
  text-align: center;
  font-size: var(--text-base);
  font-weight: 600;
}
.lightbox-sub { color: rgba(255,255,255,0.6); font-size: var(--text-sm); margin-top: 4px; }
.lightbox-close {
  position: absolute;
  top: var(--space-4); right: var(--space-4);
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  z-index: 10;
  transition: background var(--transition);
  backdrop-filter: blur(8px);
}
.lightbox-close:hover { background: var(--color-destructive); }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  backdrop-filter: blur(8px);
  transition: background var(--transition);
  z-index: 10;
}
.lightbox-nav:hover { background: var(--color-accent); }
.lightbox-prev { left: -60px; }
.lightbox-next { right: -60px; }

/* ── AI Chat Assistant Bubble ─────────────────────────────── */
.ai-assistant-btn {
  position: fixed;
  bottom: calc(var(--space-6) + 52px);
  right: var(--space-6);
  width: 52px; height: 52px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent), var(--color-smart-teal));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  box-shadow: var(--ai-glow-blue), var(--3d-shadow-mid);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: ai-float 4s ease-in-out infinite;
}
.ai-assistant-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 0 32px rgba(14,165,233,0.7), var(--3d-shadow-far);
  animation: none;
}
.ai-assistant-btn .ai-dot {
  position: absolute;
  top: 2px; right: 2px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-success);
  border: 2px solid #fff;
  animation: ai-blink 2s ease-in-out infinite;
}

/* AI Chat Panel */
.ai-chat-panel {
  display: none;
  position: fixed;
  bottom: calc(var(--space-6) + 120px);
  right: var(--space-6);
  width: 340px;
  background: linear-gradient(160deg, rgba(10,22,42,0.97), rgba(15,23,42,0.99));
  border: 1px solid rgba(14,165,233,0.3);
  border-radius: var(--radius-xl);
  z-index: 200;
  box-shadow: var(--3d-shadow-far), var(--ai-glow-blue);
  overflow: hidden;
  backdrop-filter: blur(20px);
}
.ai-chat-panel.open { display: flex; flex-direction: column; }
.ai-chat-header {
  padding: var(--space-4);
  background: linear-gradient(90deg, rgba(3,105,161,0.3), rgba(13,148,136,0.2));
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.ai-avatar {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent), var(--color-smart-teal));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--ai-glow-blue);
}
.ai-chat-name { color: #fff; font-weight: 700; font-size: var(--text-sm); }
.ai-chat-status { color: var(--color-success); font-size: var(--text-xs); }
.ai-chat-messages {
  padding: var(--space-4);
  height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}
.ai-msg {
  max-width: 85%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.5;
}
.ai-msg-bot {
  background: rgba(3,105,161,0.2);
  border: 1px solid rgba(14,165,233,0.2);
  color: rgba(255,255,255,0.9);
  align-self: flex-start;
  border-radius: 4px var(--radius-lg) var(--radius-lg) var(--radius-lg);
}
.ai-msg-user {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.85);
  align-self: flex-end;
  border-radius: var(--radius-lg) 4px var(--radius-lg) var(--radius-lg);
}
.ai-chat-input-wrap {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.ai-chat-input {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  color: #fff;
  font-size: var(--text-sm);
  outline: none;
  transition: border-color var(--transition);
}
.ai-chat-input::placeholder { color: rgba(255,255,255,0.3); }
.ai-chat-input:focus { border-color: rgba(14,165,233,0.5); box-shadow: 0 0 0 2px rgba(14,165,233,0.1); }
.ai-send-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent), var(--color-smart-teal));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}
.ai-send-btn:hover { transform: scale(1.1); box-shadow: var(--ai-glow-blue); }
.ai-quick-replies {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding: 0 var(--space-4) var(--space-3);
}
.ai-quick-reply {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: rgba(3,105,161,0.15);
  border: 1px solid rgba(14,165,233,0.2);
  color: var(--color-accent-light);
  transition: background var(--transition), border-color var(--transition);
  cursor: pointer;
}
.ai-quick-reply:hover { background: rgba(3,105,161,0.35); border-color: rgba(14,165,233,0.5); }

/* ── Responsive gallery ───────────────────────────────────── */
@media (max-width: 1024px) { .gallery-grid { columns: 3; } }
@media (max-width: 768px)  { .gallery-grid { columns: 2; } .lightbox-prev { left: -48px; } .lightbox-next { right: -48px; } }
@media (max-width: 480px)  { .gallery-grid { columns: 1; } .lightbox-prev,.lightbox-next { display:none; } .ai-chat-panel { width: calc(100vw - var(--space-8)); right: var(--space-4); } }