/* ==========================================================================
   FLASKARCHITECT // SCI-FI NEURAL TOOLBOX DESIGN SYSTEM
   Cybernetic HUD Precision • Skeuomorphic Hardware • Planetary Sci-Fi Aesthetic
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties & Sci-Fi Palette
   -------------------------------------------------------------------------- */
:root {
  /* Core Sci-Fi Neon & Energy Palette */
  --cyan-glow: #00f0ff;
  --cyan-dim: rgba(0, 240, 255, 0.15);
  --cyan-border: rgba(0, 240, 255, 0.3);
  
  --amber-400: #FBBF24;
  --amber-500: #F59E0B;
  --amber-glow: #ffb703;
  --amber-dim: rgba(255, 183, 3, 0.15);
  --amber-border: rgba(255, 183, 3, 0.35);

  --emerald-glow: #00ffa3;
  --emerald-dim: rgba(0, 255, 163, 0.15);
  --color-emerald: #10B981;

  --crimson-glow: #ff3366;
  --purple-glow: #bf55ec;
  --color-cyan: #06B6D4;
  --color-purple: #A855F7;
  --color-ruby: #EF4444;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Space Mono', 'Fira Code', monospace;
  --font-header: 'Orbitron', 'Inter', sans-serif;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Deep Space Dark Theme (Default) */
  --bg-space: #05080e;
  --bg-primary: #080c14;
  --bg-secondary: #0c121e;
  --bg-tertiary: #121a2a;
  --bg-elevated: #162238;
  --bg-inset: #030509;

  --border-subtle: rgba(0, 240, 255, 0.18);
  --border-highlight: rgba(0, 240, 255, 0.45);
  --border-active: #00f0ff;

  --text-primary: #f0f6fc;
  --text-secondary: #b0c4de;
  --text-muted: #738a9c;
  --text-dim: #486581;

  /* HUD Sci-Fi Shadows & Gradients */
  --chassis-gradient: linear-gradient(180deg, rgba(16, 25, 42, 0.95) 0%, rgba(8, 14, 24, 0.98) 100%);
  --plate-gradient: linear-gradient(145deg, rgba(18, 28, 48, 0.85), rgba(9, 15, 26, 0.95));
  --inset-shadow: inset 2px 2px 8px rgba(0, 0, 0, 0.9), inset 0 0 15px rgba(0, 240, 255, 0.05);
  --screen-inset: inset 0 4px 12px rgba(0, 0, 0, 0.95), inset 0 0 25px rgba(0, 240, 255, 0.08);
  --btn-raised-shadow: 0 4px 15px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(0, 240, 255, 0.3), inset 0 -2px 0 rgba(0, 0, 0, 0.5);
  --btn-amber-shadow: 0 0 20px rgba(255, 183, 3, 0.3), 0 4px 12px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  --card-shadow: 0 15px 35px rgba(0, 0, 0, 0.8), 0 0 15px rgba(0, 240, 255, 0.08);

  --hud-clip: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  --nav-blur-bg: rgba(6, 10, 18, 0.92);
  --badge-bg: rgba(14, 22, 38, 0.9);
}

/* Light / High-Visibility Cyber Mode */
[data-theme="light"] {
  --bg-space: #e6edf5;
  --bg-primary: #f0f4f8;
  --bg-secondary: #d9e2ec;
  --bg-tertiary: #bcccdc;
  --bg-elevated: #ffffff;
  --bg-inset: #d2dbe6;

  --border-subtle: rgba(16, 42, 77, 0.2);
  --border-highlight: rgba(0, 170, 255, 0.5);
  --border-active: #0284c7;

  --text-primary: #0b1526;
  --text-secondary: #334e68;
  --text-muted: #627d98;
  --text-dim: #829ab1;

  --chassis-gradient: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
  --plate-gradient: linear-gradient(145deg, #ffffff, #e6edf5);
  --inset-shadow: inset 2px 2px 6px rgba(0, 0, 0, 0.15), inset 0 0 10px rgba(0, 170, 255, 0.05);
  --screen-inset: inset 0 3px 8px rgba(0, 0, 0, 0.2), inset 0 0 12px rgba(0, 170, 255, 0.08);
  --btn-raised-shadow: 0 4px 10px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --btn-amber-shadow: 0 4px 15px rgba(217, 119, 6, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --card-shadow: 0 10px 25px rgba(16, 42, 77, 0.1);

  --nav-blur-bg: rgba(240, 244, 248, 0.94);
  --badge-bg: #e2e8f0;
}

/* --------------------------------------------------------------------------
   2. Reset & Sci-Fi Background FX
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-space);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 240, 255, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 85% 65%, rgba(191, 85, 236, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(255, 183, 3, 0.04) 0%, transparent 50%),
    linear-gradient(rgba(0, 240, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 32px 32px, 32px 32px;
  background-attachment: fixed;
}

/* Sci-Fi Scrollbar */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-track {
  background: var(--bg-space);
}
::-webkit-scrollbar-thumb {
  background: rgba(0, 240, 255, 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--cyan-glow);
  box-shadow: 0 0 10px var(--cyan-glow);
}

a {
  color: var(--cyan-glow);
  text-decoration: none;
  transition: all var(--transition-fast);
}

a:hover {
  color: #fff;
  text-shadow: 0 0 10px var(--cyan-glow);
}

img, svg {
  display: block;
  max-width: 100%;
}

code, pre {
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   3. Skeuomorphic & Sci-Fi HUD Core Components
   -------------------------------------------------------------------------- */

/* Hardware Plates & Chassis Panels */
.skeuo-panel {
  background: var(--plate-gradient);
  border: 1px solid var(--border-subtle);
  border-top-color: var(--border-highlight);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  position: relative;
  backdrop-filter: blur(12px);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.skeuo-panel:hover {
  border-color: var(--cyan-border);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.9), 0 0 20px rgba(0, 240, 255, 0.15);
}

/* Bezel Screws with HUD Hex Accent */
.screw {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #00f0ff, #091322);
  box-shadow: inset 0 1px 1px rgba(0,0,0,0.8), 0 0 5px rgba(0, 240, 255, 0.4);
  position: absolute;
}
.screw-tl { top: 10px; left: 10px; }
.screw-tr { top: 10px; right: 10px; }
.screw-bl { bottom: 10px; left: 10px; }
.screw-br { bottom: 10px; right: 10px; }

/* Inset CRT Screen / Terminal Display */
.skeuo-screen {
  background: var(--bg-inset);
  box-shadow: var(--screen-inset);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.skeuo-screen::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(rgba(0, 240, 255, 0) 50%, rgba(0, 0, 0, 0.4) 50%);
  background-size: 100% 4px;
  pointer-events: none;
  opacity: 0.35;
  z-index: 1;
}

/* Tactile HUD Push Buttons */
.skeuo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  background: linear-gradient(135deg, rgba(18, 28, 48, 0.9), rgba(9, 15, 26, 0.9));
  color: var(--text-primary);
  box-shadow: var(--btn-raised-shadow);
  transition: all var(--transition-fast);
  user-select: none;
  text-decoration: none;
  min-height: 40px;
}

.skeuo-btn:hover {
  border-color: var(--cyan-glow);
  color: #fff;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
  transform: translateY(-1px);
}

.skeuo-btn:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.8);
}

/* Amber Core Button */
.skeuo-btn-amber {
  background: linear-gradient(135deg, rgba(255, 183, 3, 0.25), rgba(217, 119, 6, 0.15));
  border: 1px solid var(--amber-glow);
  color: var(--amber-glow);
}

/* --------------------------------------------------------------------------
   RETURN TRANSPORTER SLIDER // WARP TO STAACOR NEWS
   -------------------------------------------------------------------------- */
.return-transporter-panel {
  background: linear-gradient(180deg, rgba(8, 14, 24, 0.95) 0%, rgba(4, 7, 12, 0.98) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px 18px;
  margin: 15px auto 25px;
  max-width: 1320px;
  box-shadow: var(--card-shadow), 0 0 20px rgba(255, 183, 3, 0.08);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.return-transporter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 8px;
}

.return-transporter-title {
  font-family: var(--font-header);
  font-size: 0.85rem;
  color: #fff;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.return-transporter-title span {
  color: var(--amber-glow);
}

.return-transporter-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.return-status-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 183, 3, 0.1);
  border: 1px solid var(--amber-glow);
  color: var(--amber-glow);
  transition: all 0.3s ease;
}

.return-link-btn {
  display: none;
  align-items: center;
  gap: 6px;
  background: var(--cyan-glow);
  color: #000 !important;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 900;
  padding: 5px 12px;
  border-radius: 4px;
  box-shadow: 0 0 15px var(--cyan-glow);
  animation: returnWarpPulse 1s infinite alternate;
}

.return-track-wrap {
  position: relative;
  width: 100%;
  height: 48px;
  background: rgba(2, 4, 8, 0.95);
  border: 1px solid rgba(255, 183, 3, 0.3);
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 3px;
  user-select: none;
  touch-action: none;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.9), 0 0 10px rgba(255, 183, 3, 0.1);
  cursor: pointer;
}

.return-track-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #ffb703 0%, #bf55ec 35%, #00ffa3 70%, #00f0ff 100%);
  border-radius: 24px;
  pointer-events: none;
  opacity: 0.65;
  transition: width 0.04s linear;
}

.return-track-label {
  position: absolute;
  width: 100%;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: bold;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 2px;
  pointer-events: none;
  z-index: 2;
  transition: all 0.2s ease;
}

.return-handle {
  position: absolute;
  left: 3px;
  top: 3px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--amber-glow);
  box-shadow: 0 0 15px var(--amber-glow), inset 0 2px 4px rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  z-index: 5;
  color: #000;
  font-size: 1.1rem;
  font-weight: bold;
  transition: background-color 0.1s ease, box-shadow 0.1s ease;
}

.return-handle:active {
  cursor: grabbing;
}

/* Transformed / Activated state past 50% */
.return-transporter-panel.return-active {
  border-color: var(--cyan-glow);
  box-shadow: var(--card-shadow), 0 0 25px rgba(0, 240, 255, 0.25);
}

.return-transporter-panel.return-active .return-status-badge {
  background: rgba(0, 240, 255, 0.2);
  border-color: var(--cyan-glow);
  color: var(--cyan-glow);
  animation: returnWarpPulse 1s infinite alternate;
}

.return-transporter-panel.return-active .return-link-btn {
  display: inline-flex;
}

@keyframes returnWarpPulse {
  0% { transform: scale(0.98); box-shadow: 0 0 5px var(--cyan-glow); }
  100% { transform: scale(1.04); box-shadow: 0 0 15px var(--cyan-glow); }
}

.skeuo-btn-sm {
  padding: 6px 14px;
  font-size: 0.78rem;
  min-height: 34px;
}

/* Pulsing LED Indicators */
.led-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.led-amber {
  background: var(--amber-glow);
  box-shadow: 0 0 8px var(--amber-glow);
  animation: ledPulse 1.8s infinite alternate;
}

.led-emerald {
  background: var(--emerald-glow);
  box-shadow: 0 0 8px var(--emerald-glow);
  animation: ledPulse 1.5s infinite alternate;
}

.led-ruby {
  background: var(--crimson-glow);
  box-shadow: 0 0 8px var(--crimson-glow);
}

@keyframes ledPulse {
  0% { opacity: 0.6; transform: scale(0.9); }
  100% { opacity: 1; transform: scale(1.1); }
}

/* Skeuomorphic Sci-Fi Badges */
.skeuo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
  background: var(--badge-bg);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.skeuo-badge-amber {
  color: var(--amber-glow);
  border-color: var(--amber-border);
  background: var(--amber-dim);
}

.skeuo-badge-emerald {
  color: var(--emerald-glow);
  border-color: rgba(0, 255, 163, 0.35);
  background: var(--emerald-dim);
}

/* --------------------------------------------------------------------------
   4. Sci-Fi Navigation Bar
   -------------------------------------------------------------------------- */
.navbar-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--nav-blur-bg);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.7);
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.brand-logo {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 0 8px var(--cyan-glow));
}

.brand-accent {
  color: var(--cyan-glow);
  text-shadow: 0 0 10px var(--cyan-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-item-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 4px;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.nav-item-link:hover {
  color: #fff;
  background: var(--cyan-dim);
  border-color: var(--cyan-glow);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.nav-item-link.active {
  color: var(--cyan-glow);
  background: rgba(0, 240, 255, 0.12);
  border-color: var(--cyan-glow);
  font-weight: bold;
}

.nav-item-link.active .nav-dot {
  background: var(--cyan-glow);
  box-shadow: 0 0 8px var(--cyan-glow);
}

.nav-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-dim);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-switch-btn, .sound-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  background: var(--plate-gradient);
  box-shadow: var(--btn-raised-shadow);
  transition: all var(--transition-fast);
}

.theme-switch-btn:hover, .sound-toggle-btn:hover {
  color: var(--cyan-glow);
  border-color: var(--cyan-glow);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.sound-toggle-btn.sound-on {
  color: var(--emerald-glow);
  border-color: var(--emerald-glow);
  box-shadow: 0 0 10px var(--emerald-glow);
}

/* Mobile Hamburger */
.mobile-menu-btn {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 6px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--cyan-border);
  background: var(--plate-gradient);
  color: var(--cyan-glow);
  cursor: pointer;
}

.mobile-drawer {
  display: none;
  padding: 16px 20px 20px;
  background: rgba(6, 10, 18, 0.98);
  border-bottom: 1px solid var(--cyan-glow);
  backdrop-filter: blur(15px);
}

.mobile-drawer.is-open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.mobile-nav-link.active {
  border-color: var(--cyan-glow);
  color: var(--cyan-glow);
}

/* --------------------------------------------------------------------------
   5. Layout & Sections
   -------------------------------------------------------------------------- */
.main-wrapper {
  flex: 1;
  margin-top: 68px;
}

.section-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 60px 20px;
}

.section-container-sm {
  max-width: 980px;
  margin: 0 auto;
  padding: 60px 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 45px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-header);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   6. Split Hero Section & Sci-Fi Neural Console
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 40px 20px 60px;
  max-width: 1320px;
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-status-pill {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: var(--plate-gradient);
  border: 1px solid var(--amber-border);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--amber-glow);
  box-shadow: 0 0 10px rgba(255, 183, 3, 0.15);
}

.hero-title {
  font-family: var(--font-header);
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, #00f0ff 0%, #00ffa3 50%, #ffb703 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.hero-metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 15px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
}

.metric-dial {
  text-align: left;
}

.metric-dial-val {
  font-size: 1.45rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--cyan-glow);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.metric-dial-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
}

/* Skeuomorphic Console Device */
.hero-device-wrapper {
  perspective: 1000px;
}

.hero-device {
  background: var(--chassis-gradient);
  border: 1px solid var(--cyan-border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.9), 0 0 25px rgba(0, 240, 255, 0.15);
  position: relative;
  transition: transform 0.4s ease;
}

.device-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 12px;
}

.device-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.device-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cyan-glow);
}

.device-telemetry-leds {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Cathode Frequency Meter Visualizer */
.vu-meter-rack {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 3px;
  height: 24px;
  background: var(--bg-inset);
  padding: 3px;
  border-radius: 4px;
  margin-bottom: 12px;
  box-shadow: var(--inset-shadow);
  border: 1px solid rgba(0, 240, 255, 0.15);
}

.vu-bar {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  transition: background var(--transition-fast);
}

.vu-bar.active-low { background: var(--emerald-glow); box-shadow: 0 0 6px var(--emerald-glow); }
.vu-bar.active-mid { background: var(--amber-glow); box-shadow: 0 0 6px var(--amber-glow); }
.vu-bar.active-high { background: var(--crimson-glow); box-shadow: 0 0 8px var(--crimson-glow); }

.terminal-screen {
  padding: 14px;
  min-height: 140px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--cyan-glow);
}

.terminal-prompt {
  color: var(--amber-glow);
  font-weight: bold;
  margin-right: 6px;
}

.terminal-cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--cyan-glow);
  animation: cursorBlink 1s infinite;
  vertical-align: middle;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.device-controls-rack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.device-route-btn {
  background: rgba(14, 22, 38, 0.9);
  border: 1px solid rgba(0, 240, 255, 0.2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 8px 10px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
}

.device-route-btn:hover {
  background: var(--cyan-dim);
  border-color: var(--cyan-glow);
  color: #fff;
}

/* --------------------------------------------------------------------------
   7. Card Content Grids & Showcase
   -------------------------------------------------------------------------- */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.cards-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}

.project-card {
  display: flex;
  flex-direction: column;
  border-radius: 10px;
  overflow: hidden;
}

.card-media-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-inset);
}

.card-media-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .card-media-img {
  transform: scale(1.05);
}

.card-badge-overlay {
  position: absolute;
  top: 10px;
  left: 10px;
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-family: var(--font-header);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.card-description {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.card-metrics-row {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 16px;
}

.metric-unit-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--amber-glow);
}

.metric-unit-lbl {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   8. AI Gallery & Filters
   -------------------------------------------------------------------------- */
.filter-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.filter-pill {
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover, .filter-pill.active {
  background: var(--cyan-glow);
  border-color: var(--cyan-glow);
  color: #000;
  font-weight: 700;
  box-shadow: 0 0 12px var(--cyan-glow);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.gallery-item {
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
}

.gallery-media-box {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--bg-inset);
}

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-img {
  transform: scale(1.05);
}

/* --------------------------------------------------------------------------
   9. Lightbox Modal
   -------------------------------------------------------------------------- */
.lightbox-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(3, 5, 9, 0.94);
  backdrop-filter: blur(14px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.lightbox-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-dialog {
  max-width: 1000px;
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--cyan-glow);
  border-radius: 12px;
  padding: 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), 0 0 35px rgba(0, 240, 255, 0.2);
}

.lightbox-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
}

.lightbox-close-btn:hover {
  color: var(--crimson-glow);
}

.lightbox-img-box {
  border-radius: 8px;
  overflow: hidden;
  background: #000;
}

.lightbox-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   10. Multi-Column Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 50px 20px 25px;
  margin-top: auto;
}

.footer-container {
  max-width: 1320px;
  margin: 0 auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand-title {
  font-family: var(--font-header);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.footer-brand-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cyan-glow);
  margin-bottom: 16px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link-item a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.footer-link-item a:hover {
  color: var(--cyan-glow);
  padding-left: 4px;
}

.footer-status-card {
  background: var(--bg-inset);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 14px;
}

.footer-bottom-bar {
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   11. Back to Top Button
   -------------------------------------------------------------------------- */
.back-to-top-btn {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: var(--plate-gradient);
  border: 1px solid var(--cyan-border);
  color: var(--cyan-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--btn-raised-shadow);
  transition: all var(--transition-fast);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
}

.back-to-top-btn.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top-btn:hover {
  background: var(--cyan-glow);
  color: #000;
  box-shadow: 0 0 15px var(--cyan-glow);
}

/* --------------------------------------------------------------------------
   12. Responsive Media Queries (Tablets, Phones & Small Screens)
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .hero-title {
    font-size: 2.4rem;
  }
  .hero-device {
    transform: none;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .lightbox-dialog {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 10px 16px;
  }
  .nav-links, .nav-actions .skeuo-btn {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }

  .hero-title {
    font-size: 2rem;
    line-height: 1.25;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .section-container {
    padding: 45px 16px;
  }

  .hero-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  .hero-actions .skeuo-btn {
    width: 100%;
    justify-content: center;
  }
  .hero-metrics-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .cards-grid-2, .cards-grid-3, .gallery-grid, .cards-grid-4 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero-device {
    padding: 16px;
  }
  .device-controls-rack {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 8px 12px;
  }
  .brand-link {
    font-size: 1.05rem;
    gap: 6px;
  }
  .brand-logo {
    width: 28px;
    height: 28px;
  }
  .theme-switch-btn, .sound-toggle-btn, .mobile-menu-btn {
    width: 34px;
    height: 34px;
    font-size: 0.8rem;
  }
  .nav-actions {
    gap: 6px;
  }

  .section-container {
    padding: 30px 12px;
  }
  .hero-section {
    padding: 20px 12px;
  }

  .hero-title {
    font-size: 1.55rem;
    margin-bottom: 10px;
  }
  .hero-description {
    font-size: 0.88rem;
    line-height: 1.5;
  }
  .hero-metrics-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 10px;
  }
  .metric-dial-val {
    font-size: 1.2rem;
  }
  .metric-dial-label {
    font-size: 0.65rem;
  }

  .hero-device {
    padding: 12px;
    border-radius: 8px;
  }
  .terminal-screen {
    min-height: 120px;
    padding: 10px;
    font-size: 0.72rem;
  }
  .device-route-btn {
    padding: 7px 9px;
    font-size: 0.7rem;
  }

  .filter-controls {
    display: flex;
    gap: 5px;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
  }
  .filter-controls::-webkit-scrollbar {
    display: none;
  }
  .filter-pill {
    padding: 5px 10px;
    font-size: 0.75rem;
    flex-shrink: 0;
  }

  input, select, textarea {
    font-size: 16px !important;
  }

  .lightbox-modal {
    padding: 8px;
  }
  .lightbox-dialog {
    padding: 12px;
    border-radius: 8px;
  }
  .lightbox-img-box {
    max-height: 200px;
  }

  .back-to-top-btn {
    bottom: 14px;
    left: 14px;
    width: 36px;
    height: 36px;
  }
}