/* ==========================================================================
   AETHER 3D - MODERN FUTURISTIC & GLASSMORPHISM STYLESHEET
   ========================================================================== */

:root {
  --bg-primary: #090a10;
  --bg-secondary: #111422;
  --glass-bg: rgba(18, 22, 38, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(0, 240, 255, 0.4);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --accent-cyan: #00f0ff;
  --accent-purple: #7928ca;
  --accent-magenta: #ff0077;
  --accent-green: #00ff88;
  --accent-gold: #ffd700;

  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --font-main: 'Outfit', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* 3D WebGL Canvas Layer */
#webgl-canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: auto;
  cursor: grab;
}

#webgl-canvas-container:active {
  cursor: grabbing;
}

/* Ambient Background Lights */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.25;
  transition: all 1s ease;
}

.bg-glow-1 {
  top: 10%;
  right: 15%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--accent-cyan), transparent 70%);
}

.bg-glow-2 {
  bottom: 10%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-purple), transparent 70%);
}

.vignette {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 40%, rgba(9, 10, 16, 0.8) 100%);
}

/* UI Content Wrapper */
.ui-layer {
  position: relative;
  z-index: 3;
  width: 100%;
  pointer-events: none; /* Let 3D canvas receive pointer events except on interactive cards */
}

.ui-layer a, 
.ui-layer button, 
.ui-layer input, 
.ui-layer .glass-card, 
.ui-layer .glass-pill,
.ui-layer .terminal-wrapper,
.ui-layer dialog {
  pointer-events: auto;
}

/* Glassmorphism Classes */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: 0 12px 40px 0 rgba(0, 240, 255, 0.15);
}

.glass-pill {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Typography & Glows */
.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple), var(--accent-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-glow {
  text-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
}

.gradient-icon {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1200px, calc(100% - 32px));
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius-full);
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.5);
  animation: float 4s ease-in-out infinite;
}

.logo-icon.small {
  width: 28px;
  height: 28px;
  font-size: 0.9rem;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 1px;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 240, 255, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: #fff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
}

.glow-btn {
  position: relative;
  overflow: hidden;
}

.glow-btn::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.glow-btn:hover::before {
  opacity: 1;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
}

/* Sound Wave Animation */
.sound-wave {
  display: none;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
  margin-left: 4px;
}

.sound-wave span {
  width: 2px;
  background: var(--accent-cyan);
  border-radius: 1px;
  animation: wave 1s ease-in-out infinite alternate;
}

.sound-wave span:nth-child(1) { height: 4px; animation-delay: 0.1s; }
.sound-wave span:nth-child(2) { height: 10px; animation-delay: 0.3s; }
.sound-wave span:nth-child(3) { height: 6px; animation-delay: 0.2s; }

.audio-active .sound-wave {
  display: inline-flex;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  display: inline-block;
  animation: pulse 2s infinite;
}

/* Layout & Container */
.content-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 60px;
}

/* SECTION 1: HERO */
.hero-section {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-bottom: 60px;
}

.hero-content {
  max-width: 680px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.1;
  margin: 20px 0;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.interaction-hint {
  margin-bottom: 36px;
  color: var(--accent-cyan);
  border-color: rgba(0, 240, 255, 0.2);
}

.hero-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-radius: var(--radius-md);
  margin-top: 20px;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.metric-divider {
  width: 1px;
  height: 32px;
  background: var(--glass-border);
}

/* SECTION COMMON HEADERS */
.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 48px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin: 16px 0 12px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* SECTION 2: STUDIO & PLAYGROUND */
.playground-section {
  padding: 80px 0;
}

.studio-layout {
  display: flex;
  justify-content: flex-end; /* Let the 3D model sit prominently on the left/center */
}

.studio-panel {
  width: 100%;
  max-width: 520px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control-label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-group-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.choice-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.choice-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.choice-btn.active {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(121, 40, 202, 0.2));
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.preset-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.preset-chip:hover, .preset-chip.active {
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
  border-color: var(--accent-cyan);
}

/* Color Pickers */
.color-picker-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.color-picker-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.color-picker-item input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  background: none;
}

.color-picker-item input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker-item input[type="color"]::-webkit-color-swatch {
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
}

/* Sliders */
.slider-item {
  margin-bottom: 12px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.slider-val {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-weight: 600;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Toggle Switches */
.toggle-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.toggle-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.toggle-switch input {
  display: none;
}

.toggle-slider {
  width: 40px;
  height: 22px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  position: relative;
  transition: background var(--transition-fast);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(18px);
}

.toggle-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.studio-actions {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 12px;
  margin-top: 10px;
}

/* SECTION 3: FEATURES */
.features-section {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border: 1px solid var(--glass-border);
}

.feature-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.feature-tags span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
}

/* SECTION 4: TELEMETRY DASHBOARD */
.telemetry-section {
  padding: 80px 0;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.telemetry-card {
  padding: 24px;
}

.telemetry-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.telemetry-main {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 800;
  color: #fff;
}

.telemetry-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: 4px;
}

.telemetry-status-badge {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* SECTION 5: COMMAND TERMINAL */
.terminal-section {
  padding: 80px 0 100px;
}

.terminal-wrapper {
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(10, 12, 20, 0.85);
  border: 1px solid var(--glass-border);
}

.terminal-topbar {
  background: rgba(255, 255, 255, 0.03);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.terminal-actions button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.terminal-actions button:hover {
  color: #fff;
}

.terminal-body {
  padding: 20px;
  height: 220px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.term-line {
  line-height: 1.5;
}

.term-line.system {
  color: var(--accent-cyan);
}

.term-line.user {
  color: #fff;
}

.term-line.error {
  color: #ff4757;
}

.term-line.success {
  color: var(--accent-green);
}

.term-cmd {
  color: var(--accent-gold);
  font-weight: bold;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.4);
  border-top: 1px solid var(--glass-border);
}

.term-prompt {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-green);
  margin-right: 10px;
  white-space: nowrap;
}

#terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.term-submit-btn {
  background: none;
  border: none;
  color: var(--accent-cyan);
  cursor: pointer;
  padding: 4px 8px;
}

/* Footer */
.footer {
  margin: 0 auto 24px;
  max-width: 1200px;
  padding: 20px 32px;
  border-radius: var(--radius-full);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.back-to-top {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Modal Dialog */
.glass-modal {
  margin: auto;
  background: none;
  border: none;
  outline: none;
}

.glass-modal::backdrop {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
}

.modal-content {
  width: min(480px, 90vw);
  padding: 28px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
}

.close-btn:hover {
  color: #fff;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #fff;
  font-family: var(--font-main);
  outline: none;
}

.form-group input:focus {
  border-color: var(--accent-cyan);
}

.preset-summary-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.summary-chip {
  background: rgba(255, 255, 255, 0.06);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Preset Toolbar & Custom Presets */
.control-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.preset-toolbar-actions {
  display: flex;
  gap: 6px;
}

.btn-tiny {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-family: var(--font-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}

.btn-tiny:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--accent-cyan);
  color: #fff;
}

.preset-chip-wrapper {
  position: relative;
  display: inline-flex;
}

.preset-delete-btn {
  position: absolute;
  top: -4px;
  right: -4px;
  background: #ff0055;
  color: #fff;
  border: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  font-size: 9px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 5;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.preset-chip-wrapper:hover .preset-delete-btn {
  display: flex;
}

/* Telemetry Progress Bars */
.telemetry-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  margin-top: 8px;
  overflow: hidden;
}

.telemetry-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
  border-radius: 3px;
  transition: width 0.5s ease;
}

.telemetry-bar-fill.purple {
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-magenta));
}

.pulse-dot.green {
  background-color: var(--accent-green);
  box-shadow: 0 0 12px var(--accent-green);
}

/* Benchmark Banner & Modal */
.benchmark-banner {
  margin-top: 24px;
  padding: 20px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  background: linear-gradient(135deg, rgba(18, 22, 38, 0.75), rgba(121, 40, 202, 0.2));
  border: 1px solid rgba(121, 40, 202, 0.3);
}

.bench-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.bench-icon {
  font-size: 2rem;
}

.bench-info h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.bench-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.bench-progress-wrapper {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 5px;
  overflow: hidden;
  margin: 16px 0;
}

.bench-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-magenta));
  transition: width 0.1s linear;
}

.bench-live-stats {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.bench-result-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  margin-top: 12px;
}

.bench-score {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-display);
  margin: 8px 0;
}

/* Feedback & Contact Section */
.feedback-section {
  padding: 60px 0;
}

.feedback-card {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px;
}

.feedback-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.feedback-form textarea {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: #fff;
  font-family: var(--font-main);
  outline: none;
  resize: vertical;
}

.feedback-form textarea:focus {
  border-color: var(--accent-cyan);
}

.form-check-group {
  margin-bottom: 20px;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}

.toast {
  background: rgba(18, 22, 38, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 8px 32px rgba(0, 240, 255, 0.2);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideInRight 0.3s ease;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

@keyframes wave {
  0% { height: 3px; }
  100% { height: 12px; }
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ==========================================================================
   MOBILE NAVIGATION DRAWER & TOUCH OPTIMIZATIONS
   ========================================================================== */

.mobile-menu-btn {
  display: none;
}

.mobile-nav-drawer {
  position: fixed;
  top: 74px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  width: min(500px, calc(100% - 32px));
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-radius: var(--radius-md);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav-drawer.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: #fff;
  background: rgba(0, 240, 255, 0.12);
  border-left: 3px solid var(--accent-cyan);
}

.mobile-nav-link i {
  width: 20px;
  color: var(--accent-cyan);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (TABLETS & PHONES)
   ========================================================================== */

/* Tablets & Small Laptops (<= 1024px) */
@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }
  .nav-cta-desktop {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .hero-title {
    font-size: clamp(2.2rem, 6vw, 3.8rem);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile Devices & Phones (<= 768px) */
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  .navbar {
    top: 8px;
    width: calc(100% - 16px);
    padding: 8px 14px;
  }

  .nav-brand .brand-text {
    font-size: 1.1rem;
  }

  #ping-badge {
    display: none; /* Conserve space on narrow mobile header */
  }

  .fps-badge {
    padding: 4px 10px;
    font-size: 0.75rem;
  }

  .content-container {
    padding: 80px 16px 40px;
  }

  .hero-section {
    min-height: calc(100vh - 100px);
    padding: 20px 0 40px;
  }

  .hero-content {
    text-align: center;
    margin: 0 auto;
    max-width: 100%;
  }

  .hero-title {
    font-size: clamp(1.85rem, 7.5vw, 2.8rem);
    line-height: 1.2;
    margin: 16px 0;
  }

  .hero-subtitle {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
  }

  .hero-metrics {
    flex-direction: row;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 14px;
    margin-top: 24px;
  }

  .metric-divider {
    display: none;
  }

  .metric-value {
    font-size: 1.25rem;
  }

  .metric-label {
    font-size: 0.72rem;
  }

  .interaction-hint {
    font-size: 0.75rem;
    padding: 6px 12px;
    margin-top: 14px;
    text-align: center;
  }

  /* 3D Studio Customizer Mobile Layout */
  .studio-layout {
    justify-content: center;
    width: 100%;
  }

  .studio-panel {
    width: 100%;
    max-width: 100%;
    padding: 18px 14px;
  }

  .btn-group-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .choice-btn {
    padding: 10px 8px;
    font-size: 0.82rem;
    min-height: 44px; /* Touch target accessibility */
  }

  .preset-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .preset-chip {
    padding: 6px 12px;
    font-size: 0.8rem;
    min-height: 38px;
  }

  .color-picker-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .color-picker-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
  }

  .slider-item {
    margin-bottom: 16px;
  }

  .slider-item input[type="range"] {
    height: 8px;
  }

  .studio-actions {
    flex-direction: column;
    gap: 10px;
  }

  .studio-actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 46px;
  }

  /* Features & Telemetry single column */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 20px;
  }

  .telemetry-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .benchmark-banner {
    flex-direction: column;
    padding: 18px;
    text-align: center;
  }

  .bench-info {
    flex-direction: column;
    text-align: center;
  }

  .benchmark-banner .btn {
    width: 100%;
    justify-content: center;
  }

  /* Terminal CLI Mobile */
  .terminal-wrapper {
    padding: 14px;
  }

  .terminal-body {
    height: 220px;
    font-size: 0.78rem;
  }

  .terminal-input-row {
    flex-wrap: wrap;
    gap: 6px;
  }

  .term-prompt {
    font-size: 0.75rem;
  }

  .terminal-input-row input {
    font-size: 0.85rem;
    min-height: 40px;
  }

  /* Feedback Form Mobile */
  .feedback-card {
    padding: 18px;
  }

  .feedback-form .form-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Modals on Mobile */
  .glass-modal .modal-content {
    width: calc(100% - 24px);
    max-width: 100%;
    padding: 20px 16px;
    margin: 16px auto;
  }

  /* Footer */
  .footer {
    padding: 20px 14px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .toast-container {
    bottom: 16px;
    right: 16px;
    left: 16px;
  }

  .toast {
    font-size: 0.82rem;
    padding: 10px 14px;
  }
}

/* Extra Small Screens (<= 380px) */
@media (max-width: 380px) {
  .btn-group-grid {
    grid-template-columns: 1fr;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
  }
}