/* ═══════════════════════════════════════════════════════════════════════════
   ApisNode.com — Premium Dark Theme
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  --bg-deep: #060A14;
  --bg-primary: #0A0E1A;
  --bg-card: #0F1629;
  --bg-card-hover: #141C35;
  --bg-glass: rgba(15, 22, 41, 0.7);
  --cyan: #00E5FF;
  --cyan-dim: rgba(0, 229, 255, 0.15);
  --amber: #FFB300;
  --amber-dim: rgba(255, 179, 0, 0.12);
  --green: #4ADE80;
  --red: #FF5252;
  --purple: #8B5CF6;
  --pink: #F472B6;
  --text: #E2E8F0;
  --text-dim: rgba(226, 232, 240, 0.5);
  --text-muted: rgba(226, 232, 240, 0.3);
  --border: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(0, 229, 255, 0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── Typography ─────────────────────────────────────────────────────────── */
h1, h2, h3, h4 { font-family: 'Outfit', sans-serif; font-weight: 600; line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.25rem; }
.mono { font-family: 'JetBrains Mono', monospace; }
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--cyan);
  margin-bottom: 12px;
  display: block;
}
.section-desc {
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
  text-align: center;
}

/* ─── Navbar ─────────────────────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 40px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(6, 10, 20, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled { padding: 10px 40px; background: rgba(6, 10, 20, 0.95); }
.nav-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-brand img { height: 42px; width: 42px; object-fit: contain; }
.nav-brand span { font-family: 'Outfit', sans-serif; font-size: 1.3rem; font-weight: 700; color: var(--text); }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
  color: var(--text-dim); text-decoration: none; font-size: 0.85rem;
  font-weight: 500; letter-spacing: 0.5px; transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--cyan); transition: var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: linear-gradient(135deg, var(--cyan), #0091EA);
  color: #000; padding: 8px 24px; border-radius: 8px;
  font-weight: 600; font-size: 0.85rem; text-decoration: none;
  transition: var(--transition); border: none; cursor: pointer;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 229, 255, 0.3); }
.mobile-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* ─── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; position: relative; overflow: hidden;
  padding: 120px 40px 80px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 30%, rgba(0, 229, 255, 0.08), transparent 70%),
              radial-gradient(ellipse 60% 40% at 70% 60%, rgba(139, 92, 246, 0.05), transparent 60%),
              var(--bg-deep);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridDrift 20s linear infinite;
}
@keyframes gridDrift { 0% { transform: translate(0,0); } 100% { transform: translate(60px,60px); } }
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-brand {
  max-width: 520px; margin: 0 auto 0; height: auto;
}
.hero-brand img {
  width: 100%; height: auto; object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(0,229,255,0.15));
}
.hero-bee {
  width: 300px; height: 300px; margin: -10px auto 16px;
}
.hero-bee img {
  width: 100%; height: 100%; object-fit: contain;
  filter: drop-shadow(0 0 40px rgba(0,229,255,0.25));
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at center, black 50%, transparent 100%);
  mask-image: radial-gradient(ellipse 70% 70% at center, black 50%, transparent 100%);
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.hero-tagline {
  font-family: 'Outfit', sans-serif; font-size: clamp(1.4rem, 3vw, 2.2rem); font-weight: 600;
  margin-bottom: 20px; letter-spacing: 0.5px;
}
.hero h1 .accent, .hero-brand .accent, .hero-tagline .accent { color: var(--cyan); }
.hero-sub {
  font-size: 1.15rem; color: var(--text-dim);
  max-width: 580px; margin: 0 auto 40px; line-height: 1.7;
}
.hero-cta-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #0091EA);
  color: #000; padding: 14px 36px; border-radius: 12px;
  font-weight: 600; font-size: 0.95rem; text-decoration: none;
  transition: var(--transition); border: none; cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,229,255,0.3); }
.btn-secondary {
  background: transparent; color: var(--text); padding: 14px 36px;
  border-radius: 12px; font-weight: 500; font-size: 0.95rem;
  text-decoration: none; transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.15); cursor: pointer;
}
.btn-secondary:hover { border-color: var(--cyan); color: var(--cyan); }
.hero-stats {
  display: flex; gap: 48px; justify-content: center; margin-top: 64px;
  padding-top: 40px; border-top: 1px solid var(--border);
}
.hero-stat { text-align: center; }
.hero-stat-val {
  font-family: 'Outfit', sans-serif; font-size: 2rem; font-weight: 700;
  color: var(--cyan); display: block;
}
.hero-stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; }

/* ─── Sections ───────────────────────────────────────────────────────────── */
section { padding: 100px 40px; position: relative; }
.section-center { text-align: center; }
.container { max-width: 1200px; margin: 0 auto; }

/* ─── Sensor Cards ───────────────────────────────────────────────────────── */
.sensor-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px; margin-top: 48px;
}
.sensor-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.sensor-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--card-accent, var(--cyan)), transparent);
  opacity: 0; transition: var(--transition);
}
.sensor-card:hover { border-color: var(--border-glow); transform: translateY(-4px); }
.sensor-card:hover::before { opacity: 1; }
.sensor-icon { font-size: 2.5rem; margin-bottom: 16px; display: block; }
.sensor-card h3 { margin-bottom: 10px; }
.sensor-card p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.6; }

/* ─── Product Gallery ────────────────────────────────────────────────────── */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
.gallery-item {
  border-radius: var(--radius); overflow: hidden; position: relative;
  aspect-ratio: 4/3; background: var(--bg-card); border: 1px solid var(--border);
  transition: var(--transition);
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.gallery-item:hover { border-color: var(--border-glow); transform: scale(1.02); }
.gallery-item:hover img { transform: scale(1.05); }
.gallery-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 16px; background: linear-gradient(transparent, rgba(0,0,0,0.8));
  font-size: 0.85rem; font-weight: 500;
}

/* ─── AI Section ─────────────────────────────────────────────────────────── */
.ai-showcase {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; margin-top: 48px;
}
.ai-visual {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; position: relative;
}
.ai-report {
  background: rgba(0, 229, 255, 0.03); border-radius: var(--radius-sm);
  padding: 24px; font-family: 'JetBrains Mono', monospace; font-size: 0.8rem;
  line-height: 1.8; color: var(--text-dim);
}
.ai-report .key { color: var(--cyan); }
.ai-report .val-good { color: var(--green); }
.ai-report .val-warn { color: var(--amber); }
.ai-features { list-style: none; padding: 0; margin: 0; }
.ai-features li {
  padding: 12px 0; border-bottom: 1px solid var(--border);
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.82rem; line-height: 1.4;
}
.ai-features li::before {
  content: '▹'; color: var(--cyan); font-weight: bold; font-size: 0.9rem;
  flex-shrink: 0; margin-top: 1px;
}

/* ─── Chat Demo ──────────────────────────────────────────────────────────── */
.chat-demo-section {
  margin-top: 64px; text-align: center;
}
.chat-demo-title {
  font-family: 'Outfit', sans-serif; font-size: 1.4rem; margin-bottom: 12px;
}
.chat-demo-desc {
  color: var(--text-dim); font-size: 0.95rem; line-height: 1.7;
  max-width: 700px; margin: 0 auto 28px;
}
.chat-window {
  max-width: 720px; margin: 0 auto;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
}
.chat-messages {
  padding: 24px 20px; min-height: 280px; max-height: 420px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 16px;
}
.chat-bubble {
  max-width: 85%; padding: 14px 18px; border-radius: 14px;
  font-size: 0.88rem; line-height: 1.7; text-align: left;
  animation: chatSlideIn 0.4s ease;
}
@keyframes chatSlideIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.chat-bubble.user {
  align-self: flex-end; background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(0,145,234,0.15));
  border: 1px solid rgba(0,229,255,0.2); color: var(--text);
}
.chat-bubble.assistant {
  align-self: flex-start; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); color: var(--text);
}
.chat-bubble.assistant .chat-source {
  display: inline-block; margin-top: 8px; padding: 3px 8px;
  background: rgba(0,229,255,0.08); border-radius: 4px;
  font-size: 0.7rem; color: var(--cyan); font-family: 'JetBrains Mono', monospace;
}
.chat-typing {
  align-self: flex-start; padding: 12px 18px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); border-radius: 14px;
  display: flex; gap: 5px; align-items: center;
}
.chat-typing span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--text-dim);
  animation: typingDot 1.4s infinite;
}
.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingDot { 0%, 60%, 100% { opacity: 0.3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-4px); } }
.chat-input-bar {
  padding: 16px 20px; border-top: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}
.chat-suggestions {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px;
}
.chat-suggestion {
  padding: 6px 14px; border-radius: 20px;
  background: rgba(0,229,255,0.08); border: 1px solid rgba(0,229,255,0.2);
  color: var(--cyan); font-size: 0.78rem; cursor: pointer;
  transition: var(--transition); white-space: nowrap;
}
.chat-suggestion:hover {
  background: rgba(0,229,255,0.15); border-color: var(--cyan);
}
.chat-input-row { display: flex; gap: 8px; }
.chat-input {
  flex: 1; padding: 10px 16px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); font-size: 0.88rem; outline: none;
  font-family: 'Inter', sans-serif;
}
.chat-input:focus { border-color: rgba(0,229,255,0.3); }
.chat-send {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), #0091EA);
  border: none; color: #000; font-size: 1.1rem; font-weight: 700;
  cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.chat-send:disabled { opacity: 0.3; cursor: default; }
.chat-badge {
  display: block; margin-top: 10px; font-size: 0.7rem;
  color: var(--text-muted); font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.5px;
}
.live-section { background: linear-gradient(180deg, var(--bg-deep), rgba(0,229,255,0.02), var(--bg-deep)); }

/* Login overlay for live data */
.live-login-overlay {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 48px; max-width: 420px;
  margin: 48px auto 0; text-align: center;
}
.live-login-overlay h3 { margin-bottom: 12px; }
.live-login-overlay p { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 24px; }
.input-group { margin-bottom: 16px; text-align: left; }
.input-group label { display: block; font-size: 0.75rem; color: var(--text-dim); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 1px; }
.input-group input {
  width: 100%; padding: 12px 16px; background: rgba(255,255,255,0.04);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-size: 0.9rem; outline: none; transition: var(--transition);
}
.input-group input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-dim); }
.login-error { color: var(--red); font-size: 0.8rem; margin-top: 8px; display: none; }
.login-error.visible { display: block; }

/* Live dashboard grid */
.live-dashboard { margin-top: 48px; display: none; }
.live-dashboard.visible { display: block; }
.live-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px; padding: 16px 24px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.live-badge { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.live-updated { font-size: 0.75rem; color: var(--text-muted); }

.live-grid {
  display: flex; flex-direction: column; gap: 12px;
}

/* ─── Device Section (full-width horizontal row per device) ─────────────── */
.device-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.device-header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  background: linear-gradient(135deg, rgba(0,229,255,0.05), transparent);
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
}
.device-header.apismind-header {
  background: linear-gradient(135deg, rgba(255,152,0,0.06), transparent);
}
.device-dot {
  width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;
}
.device-dot.online { background: var(--green); box-shadow: 0 0 6px rgba(74,222,128,0.5); animation: pulse 2s infinite; }
.device-dot.offline { background: var(--red); opacity: 0.6; }
.device-name {
  font-family: 'Outfit', sans-serif; font-weight: 600; font-size: 14px; flex: 1;
}
.device-role {
  font-size: 10px; color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 1px; text-transform: uppercase;
}

/* Card row — single horizontal row of sensor tiles per device */
.device-cards {
  display: grid; gap: 10px; padding: 12px; min-height: 0;
}

/* ─── Sensor Card (inside device row) ───────────────────────────────────── */
.sensor-card {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  position: relative; min-width: 0;
  display: flex; flex-direction: column; overflow: hidden;
}
.sensor-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--card-accent, var(--cyan)); opacity: 0.5;
}
.card-header { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
.card-icon { font-size: 14px; }
.card-title {
  font-family: 'Outfit', sans-serif; font-weight: 500; font-size: 11px;
  color: var(--text-dim); letter-spacing: 0.5px; text-transform: uppercase; flex: 1;
}
.card-value-row { display: flex; align-items: baseline; gap: 6px; margin-bottom: 2px; }
.card-value { font-family: 'Outfit', sans-serif; font-weight: 700; font-size: 26px; line-height: 1.1; }
.card-unit { font-weight: 400; font-size: 12px; color: var(--text-dim); }
.card-sub { font-size: 11px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }

/* Status color classes */
.val-good { color: var(--green); }
.val-warn { color: var(--amber); }
.val-bad { color: var(--red); }
.val-cyan { color: var(--cyan); }
.val-purple { color: var(--purple); }
.val-white { color: var(--text); }

/* ─── Environment Sub-Grid (3x2 inside env card) ───────────────────────── */
.env-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr 1fr; gap: 8px; margin-top: 8px; flex: 1;
}
.env-cell {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 10px; display: flex; flex-direction: column;
}
.env-cell-head { display: flex; align-items: center; gap: 4px; margin-bottom: 2px; }
.env-cell-icon { font-size: 12px; }
.env-cell-label {
  font-family: 'Outfit', sans-serif; font-size: 10px; font-weight: 500;
  color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.3px;
}
.env-cell-val {
  display: flex; align-items: baseline; gap: 3px;
  font-family: 'Outfit', sans-serif; font-weight: 700; font-size: 20px; line-height: 1.2;
}
.env-cell-unit { font-size: 11px; font-weight: 400; color: var(--text-dim); }

/* ─── Mini Graph ────────────────────────────────────────────────────────── */
.mini-graph { margin-top: 6px; flex: 1; }
.mini-graph canvas { display: block; width: 100%; height: 100%; min-height: 40px; border-radius: 4px; }

/* ─── Spectrum Bars ─────────────────────────────────────────────────────── */
.spectrum-bars { display: flex; align-items: flex-end; gap: 2px; height: 32px; margin-top: 6px; }
.spectrum-bar { flex: 1; min-height: 2px; border-radius: 2px 2px 0 0; transition: height 0.3s ease-out; }

/* ─── Spectrogram ───────────────────────────────────────────────────────── */
.spectrogram-container {
  margin-top: 8px; border: 1px solid var(--border);
  border-radius: 4px; overflow: hidden; background: #000; flex: 1;
}
.spectrogram-container canvas { display: block; width: 100%; height: 100%; min-height: 80px; }

/* ─── SoC Bar ───────────────────────────────────────────────────────────── */
.soc-bar-track {
  width: 100%; height: 8px; background: rgba(255,255,255,0.06);
  border-radius: 4px; margin-top: 6px; overflow: hidden;
}
.soc-bar-fill { height: 100%; border-radius: 4px; transition: width 0.8s ease-out; }

/* AI Analysis card */
.analysis-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; margin-top: 24px;
}
.analysis-card h3 { font-size: 1rem; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.health-badge {
  display: inline-block; padding: 4px 12px; border-radius: 6px;
  font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px;
}
.health-badge.healthy { background: rgba(74,222,128,0.15); color: var(--green); }
.health-badge.warning { background: rgba(255,179,0,0.15); color: var(--amber); }
.health-badge.critical { background: rgba(255,82,82,0.15); color: var(--red); }
.analysis-summary { color: var(--text-dim); font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; }
.analysis-items { list-style: none; }
.analysis-items li { padding: 8px 0; font-size: 0.85rem; display: flex; gap: 8px; border-bottom: 1px solid var(--border); }
.analysis-items li:last-child { border-bottom: none; }
.analysis-header:hover { opacity: 0.85; }
.analysis-header:hover .analysis-chevron { color: var(--cyan); }
.analysis-hive-row { display: flex; gap: 8px; padding: 6px 0; font-size: 0.85rem; align-items: center; }
.analysis-more { cursor: pointer; }
.analysis-full { animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }

/* ─── Architecture ───────────────────────────────────────────────────────── */
.arch-flow {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; margin-top: 48px; flex-wrap: wrap;
}
.arch-node {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 36px; text-align: center;
  min-width: 140px; transition: var(--transition);
}
.arch-node:hover { border-color: var(--border-glow); transform: translateY(-4px); }
.arch-node-icon { font-size: 2.5rem; margin-bottom: 10px; display: block; }
.arch-node h4 { font-size: 0.95rem; margin-bottom: 4px; }
.arch-node p { font-size: 0.75rem; color: var(--text-muted); }
.arch-arrow { font-size: 1.5rem; color: var(--cyan); }
.arch-mesh-group {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  border: 2px dashed var(--cyan); border-radius: 16px;
  padding: 20px; position: relative;
  background: rgba(0, 188, 212, 0.03);
}
.arch-mesh-group .arch-node {
  min-width: 100px; padding: 16px 20px;
}
.arch-mesh-group .arch-node-icon { font-size: 1.8rem; margin-bottom: 6px; }
.arch-mesh-group .arch-node h4 { font-size: 0.8rem; }
.arch-mesh-group .arch-node p { font-size: 0.7rem; }
.arch-mesh-label {
  grid-column: 1 / -1; text-align: center;
  font-size: 0.75rem; font-weight: 600;
  color: var(--cyan); letter-spacing: 0.5px;
  padding-top: 4px;
}
.arch-apps-node { min-width: 160px; }
.arch-apps-list {
  display: flex; flex-direction: column; gap: 4px; margin-top: 8px;
}
.arch-apps-list span {
  font-size: 0.72rem; color: var(--text-muted);
  text-align: left; padding: 2px 0;
}

/* ─── Contact / CTA ──────────────────────────────────────────────────────── */
.cta-section {
  text-align: center; padding: 120px 40px;
  background: linear-gradient(180deg, var(--bg-deep), rgba(0,229,255,0.03), var(--bg-deep));
}
.cta-section h2 { margin-bottom: 16px; }
.cta-section p { color: var(--text-dim); max-width: 500px; margin: 0 auto 40px; }

/* ─── Footer ─────────────────────────────────────────────────────────────── */
footer {
  padding: 40px; text-align: center;
  border-top: 1px solid var(--border);
  font-size: 0.75rem; color: var(--text-muted);
}
footer a { color: var(--cyan); text-decoration: none; }

/* ─── Animations ─────────────────────────────────────────────────────────── */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ─── Spinner ────────────────────────────────────────────────────────────── */
.spinner {
  width: 18px; height: 18px; border: 2px solid rgba(0,0,0,0.2);
  border-top-color: #000; border-radius: 50%; animation: spin 0.6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }

/* ─── Trial Program Section ─────────────────────────────────────────────── */
.trial-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 48px;
}
.trial-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 28px; text-align: center;
  position: relative; transition: var(--transition); overflow: hidden;
}
.trial-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent); opacity: 0;
  transition: var(--transition);
}
.trial-card:hover { border-color: var(--border-glow); transform: translateY(-4px); }
.trial-card:hover::before { opacity: 1; }
.trial-step {
  font-family: 'Outfit', sans-serif; font-size: 2.5rem; font-weight: 700;
  color: rgba(0,229,255,0.12); position: absolute; top: 12px; right: 16px;
}
.trial-icon { font-size: 2.5rem; display: block; margin-bottom: 16px; }
.trial-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.trial-card p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.7; }

.trial-requirements {
  margin-top: 56px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px; text-align: left; max-width: 780px;
  margin-left: auto; margin-right: auto;
}
.trial-requirements h3 { font-size: 1.3rem; margin-bottom: 28px; text-align: center; }
.req-list { display: flex; flex-direction: column; gap: 20px; }
.req-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding-bottom: 20px; border-bottom: 1px solid var(--border);
}
.req-item:last-child { border-bottom: none; padding-bottom: 0; }
.req-bullet { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.req-item strong { font-size: 0.95rem; display: block; margin-bottom: 4px; }
.req-item p { font-size: 0.85rem; color: var(--text-dim); line-height: 1.6; margin: 0; }
.inline-link { color: var(--cyan); text-decoration: none; border-bottom: 1px solid rgba(0,229,255,0.3); transition: var(--transition); }
.inline-link:hover { border-color: var(--cyan); }

/* ─── Page Section (Contact / Apply) ────────────────────────────────────── */
.page-section {
  padding: 140px 40px 100px; position: relative; min-height: 100vh;
  background: var(--bg-deep);
}

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.form-container {
  max-width: 700px; margin: 0 auto;
}
.styled-form {
  display: flex; flex-direction: column; gap: 20px; text-align: left;
}
.form-section-label {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 3px; color: var(--cyan);
  margin-top: 16px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.form-group {
  display: flex; flex-direction: column; gap: 6px;
}
.form-group label {
  font-size: 0.8rem; font-weight: 500; color: var(--text-dim);
  letter-spacing: 0.5px;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 16px;
  color: var(--text); font-family: 'Inter', sans-serif; font-size: 0.9rem;
  transition: var(--transition); outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,229,255,0.08);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-card); color: var(--text); }
.form-group textarea { resize: vertical; min-height: 100px; }

.checkbox-group { flex-direction: row; }
.checkbox-label {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 0.85rem; color: var(--text-dim); cursor: pointer;
  line-height: 1.6;
}
.checkbox-label input[type="checkbox"] {
  width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px;
  accent-color: var(--cyan); cursor: pointer;
}
.checkbox-label .inline-link { font-size: inherit; }

.form-submit {
  align-self: flex-start; margin-top: 8px;
  padding: 14px 48px; font-size: 1rem;
}

.form-success {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; padding: 60px 40px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.success-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), #0091EA);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; color: #000; font-weight: 700; margin-bottom: 20px;
}
.form-success h3 { margin-bottom: 8px; }
.form-success p { color: var(--text-dim); max-width: 400px; }

/* ─── Requirements Grid (Apply page) ────────────────────────────────────── */
.requirements-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
  margin-top: 48px; text-align: left;
}
.req-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; transition: var(--transition);
}
.req-card:hover { border-color: var(--border-glow); transform: translateY(-4px); }
.req-icon { font-size: 2rem; display: block; margin-bottom: 12px; }
.req-card h3 { font-size: 1rem; margin-bottom: 8px; }
.req-card p { font-size: 0.85rem; color: var(--text-dim); line-height: 1.6; }

/* ─── FAQ Section ────────────────────────────────────────────────────────── */
.faq-list {
  max-width: 760px; margin: 48px auto 0;
  display: flex; flex-direction: column; gap: 12px;
  text-align: left;
}
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--border-glow); }
.faq-item[open] { border-color: rgba(0, 229, 255, 0.25); }
.faq-item summary {
  padding: 22px 28px; cursor: pointer; font-weight: 600;
  font-family: 'Outfit', sans-serif; font-size: 1rem;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; color: var(--cyan); font-size: 1.4rem; font-weight: 300;
  flex-shrink: 0; transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 28px 22px; color: var(--text-dim);
  font-size: 0.92rem; line-height: 1.75; margin: 0;
}
.faq-item a { color: var(--cyan); text-decoration: none; border-bottom: 1px solid rgba(0,229,255,0.3); }
.faq-item a:hover { border-color: var(--cyan); }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .navbar { padding: 12px 20px; }
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(6,10,20,0.98); padding: 20px;
    border-bottom: 1px solid var(--border);
  }
  section { padding: 60px 20px; }
  .hero { padding: 100px 20px 60px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .sensor-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .ai-showcase { grid-template-columns: 1fr; }
  .arch-flow { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
  .device-cards { grid-template-columns: 1fr 1fr !important; }
  .trial-grid { grid-template-columns: 1fr; }
  .requirements-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .page-section { padding: 100px 20px 60px; }
}
@media (max-width: 600px) {
  .device-cards { grid-template-columns: 1fr !important; }
  .hero-cta-group { flex-direction: column; align-items: center; }
}