/* ==========================================================================
   AVISHKAR 2026 — Official Website Launch Presentation
   Centre for Innovation and Entrepreneurship (CIE) | GD Goenka University
   Design System: Projector-Optimized 16:9 Luxury Cinema Aesthetics
   ========================================================================== */

:root {
  --color-primary-navy: #0A2047;
  --color-secondary-navy: #132E57;
  --color-interactive-navy: #19365F;
  --color-deep-bg: #040711;
  --color-card-bg: rgba(10, 32, 71, 0.45);
  --color-card-border: rgba(212, 175, 55, 0.28);
  --color-elegant-gold: #D4AF37;
  --color-dark-gold: #B89125;
  --color-light-gold: #FCE7A1;
  --color-gold-glow: rgba(212, 175, 55, 0.4);
  --color-text-primary: #F8FAFC;
  --color-text-secondary: #CBD5E1;
  --color-text-muted: #94A3B8;
  --color-status-green: #10B981;
  --font-display: "Cinzel", "Playfair Display", "Georgia", "Times New Roman", serif;
  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --stage-scale: 1;
}

/* Base Reset & Lock */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
}

html, body {
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #020409;
  font-family: var(--font-sans);
  color: var(--color-text-primary);
}

/* Master Fixed 16:9 Projector Stage */
.stage-viewport {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 50%, #060B18 0%, #020409 100%);
  overflow: hidden;
}

.stage-canvas-16-9 {
  position: absolute;
  width: 1920px;
  height: 1080px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(var(--stage-scale, 1));
  transform-origin: center center;
  overflow: hidden;
  background: radial-gradient(circle at 50% 35%, rgba(19, 46, 87, 0.45) 0%, rgba(10, 32, 71, 0.25) 45%, #040711 85%);
  box-shadow: 0 0 120px rgba(0, 0, 0, 0.85);
}

/* Ambient Canvas Background (Starfield / Particle Energy) */
#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 1920px;
  height: 1080px;
  pointer-events: none;
  z-index: 1;
  opacity: 0.85;
}

/* Ambient Atmosphere & Vignette */
.ambient-lighting {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(ellipse at 50% 20%, rgba(212, 175, 55, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 80%, rgba(10, 32, 71, 0.3) 0%, transparent 50%),
              radial-gradient(ellipse at 20% 80%, rgba(10, 32, 71, 0.3) 0%, transparent 50%);
}

.vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  box-shadow: inset 0 0 160px rgba(2, 4, 9, 0.95);
}

/* Presentation Scenes Container */
.scene-container {
  position: absolute;
  inset: 0;
  z-index: 10;
}

.scene {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  transform: scale(0.96);
  pointer-events: none;
}

.scene.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  pointer-events: auto;
}

/* ==========================================================================
   SCENE 1: OPENING (0s – 5s)
   "A New Vision. A New Beginning."
   ========================================================================== */
.scene-opening {
  text-align: center;
}

.opening-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 22px;
  border-radius: 9999px;
  background: rgba(10, 32, 71, 0.6);
  border: 1px solid rgba(212, 175, 55, 0.3);
  font-size: 14px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-elegant-gold);
  margin-bottom: 36px;
  box-shadow: 0 0 25px rgba(212, 175, 55, 0.15);
  opacity: 0;
  transform: translateY(20px);
  transition: all 1.2s ease 0.3s;
}

.scene-opening.active .opening-badge {
  opacity: 1;
  transform: translateY(0);
}

.pulsing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-elegant-gold);
  box-shadow: 0 0 10px var(--color-elegant-gold);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.4; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.3); }
}

.opening-title {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 400;
  letter-spacing: 0.14em;
  line-height: 1.35;
  color: #FFFFFF;
  text-transform: uppercase;
  max-width: 1400px;
  opacity: 0;
  transform: translateY(30px);
  transition: all 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.6s;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.8), 0 0 60px rgba(212, 175, 55, 0.25);
}

.scene-opening.active .opening-title {
  opacity: 1;
  transform: translateY(0);
}

.opening-title span.gold-word {
  color: var(--color-elegant-gold);
  background: linear-gradient(135deg, #FFF6D6 0%, #D4AF37 60%, #AA820A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

.opening-line-reveal {
  width: 140px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-elegant-gold), transparent);
  margin: 36px auto 0;
  opacity: 0;
  transform: scaleX(0);
  transition: all 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.9s;
}

.scene-opening.active .opening-line-reveal {
  opacity: 1;
  transform: scaleX(1);
}

/* ==========================================================================
   SCENE 2: TITLE REVEAL (5s – 11s)
   AVISHKAR 2026 + Centre for Innovation and Entrepreneurship
   ========================================================================== */
.scene-title {
  text-align: center;
}

.title-header-lockup {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-bottom: 28px;
  opacity: 0;
  transform: translateY(-20px);
  transition: all 1.2s ease 0.2s;
}

.scene-title.active .title-header-lockup {
  opacity: 1;
  transform: translateY(0);
}

.univ-emblem-img {
  height: 52px;
  width: auto;
  filter: drop-shadow(0 4px 14px rgba(0,0,0,0.6));
}

.header-divider-line {
  width: 1px;
  height: 38px;
  background: rgba(212, 175, 55, 0.4);
}

.univ-sub-tag {
  font-size: 15px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.logo-crest-wrap {
  position: relative;
  width: 160px;
  height: 120px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.85);
  transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
}

.scene-title.active .logo-crest-wrap {
  opacity: 1;
  transform: scale(1);
}

.logo-crest-aura {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.25) 0%, rgba(10, 32, 71, 0.4) 50%, transparent 75%);
  filter: blur(20px);
  animation: pulseAura 4s infinite ease-in-out;
}

@keyframes pulseAura {
  0%, 100% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 1; }
}

.logo-crest-img {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  object-contain: contain;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.7)) drop-shadow(0 0 20px rgba(212, 175, 55, 0.3));
}

.main-title-text {
  font-family: var(--font-display);
  font-size: 96px;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.05;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #FFFFFF 0%, #FFF3D1 35%, #D4AF37 70%, #AA820A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 30px rgba(0, 0, 0, 0.9));
  opacity: 0;
  transform: translateY(25px);
  transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.6s;
}

.scene-title.active .main-title-text {
  opacity: 1;
  transform: translateY(0);
}

.title-year-badge {
  display: inline-block;
  font-size: 32px;
  letter-spacing: 0.25em;
  color: var(--color-elegant-gold);
  margin-left: 14px;
  font-weight: 300;
}

/* Two-Tone Institutional Accent Bar */
.accent-bar-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 18px auto 26px;
  opacity: 0;
  transform: scaleX(0);
  transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.8s;
}

.scene-title.active .accent-bar-wrap {
  opacity: 1;
  transform: scaleX(1);
}

.accent-gold-segment {
  width: 72px;
  height: 4px;
  background: var(--color-elegant-gold);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--color-elegant-gold);
}

.accent-navy-segment {
  width: 160px;
  height: 4px;
  background: #2563EB;
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.5);
}

.title-cie-line {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #FFFFFF;
  margin-bottom: 8px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 1.2s ease 1s;
}

.scene-title.active .title-cie-line {
  opacity: 1;
  transform: translateY(0);
}

.title-univ-subline {
  font-size: 18px;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: 400;
  opacity: 0;
  transform: translateY(20px);
  transition: all 1.2s ease 1.1s;
}

.scene-title.active .title-univ-subline {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   SCENE 3: LIVE PUBLIC WEBSITE (11s – 19s)
   Clean Full-Screen Showcase of the Actual Live AVISHKAR Public Homepage
   ========================================================================== */
.scene-platform {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.live-website-display {
  position: absolute;
  top: 50px;
  bottom: 60px;
  left: 60px;
  right: 60px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.95), 0 0 60px rgba(10, 32, 71, 0.7);
  border: 1.5px solid rgba(212, 175, 55, 0.35);
  background: #0A2047;
  display: flex;
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none; /* Prevents premature link clicks during the 20-second intro */
}

.scene-platform.active .live-website-display {
  opacity: 1;
  transform: scale(1);
}

.live-homepage-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #FFFFFF;
  display: block;
}

/* ==========================================================================
   SCENE 4: LAUNCH SCREEN (15s – 20s & Permanent State)
   Real Interactive "LAUNCH AVISHKAR" Button
   ========================================================================== */
.scene-launch {
  text-align: center;
  justify-content: center;
}

.launch-identity-lockup {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 32px;
  opacity: 0;
  transform: translateY(-25px);
  transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}

.scene-launch.active .launch-identity-lockup {
  opacity: 1;
  transform: translateY(0);
}

.launch-crests-row {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 20px;
}

.launch-univ-logo {
  height: 54px;
  width: auto;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.6));
}

.launch-crest-divider {
  width: 1px;
  height: 44px;
  background: rgba(212, 175, 55, 0.4);
}

.launch-avishkar-logo {
  height: 70px;
  width: auto;
  filter: drop-shadow(0 6px 16px rgba(0,0,0,0.7));
}

.launch-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 24px;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  font-size: 13px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-status-green);
  font-weight: 600;
  margin-bottom: 18px;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.15);
}

.status-beacon-live {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-status-green);
  box-shadow: 0 0 10px var(--color-status-green);
  animation: beaconPulse 1.8s infinite ease-in-out;
}

@keyframes beaconPulse {
  0%, 100% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.35); }
}

.launch-heading-h1 {
  font-family: var(--font-display);
  font-size: 58px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #FFFFFF;
  margin-bottom: 12px;
  text-transform: uppercase;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.8), 0 0 50px rgba(212, 175, 55, 0.2);
}

.launch-heading-h1 span.gold {
  color: var(--color-elegant-gold);
  background: linear-gradient(135deg, #FFF9E6 0%, #D4AF37 50%, #B89125 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.launch-instruction-text {
  font-size: 20px;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
  max-width: 900px;
  margin: 0 auto 44px;
  line-height: 1.5;
  font-weight: 400;
}

/* ==========================================================================
   THE MASTER INTERACTIVE LAUNCH BUTTON
   - Real HTML <button>
   - Remains visible indefinitely
   - Only navigates on physical click or Enter/Space
   - Navigates in same tab to: https://avishkar-v2.cie-1e4.workers.dev/
   ========================================================================== */
.launch-button-wrapper {
  position: relative;
  display: inline-block;
  opacity: 0;
  transform: scale(0.88);
  transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}

.scene-launch.active .launch-button-wrapper {
  opacity: 1;
  transform: scale(1);
}

/* Ambient Pulse Aura behind button */
.button-ambient-aura {
  position: absolute;
  inset: -14px;
  border-radius: 46px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.45) 0%, rgba(10, 32, 71, 0.6) 50%, transparent 75%);
  filter: blur(16px);
  opacity: 0.75;
  animation: buttonAuraBreathe 3s infinite ease-in-out;
  pointer-events: none;
}

@keyframes buttonAuraBreathe {
  0%, 100% { transform: scale(0.96); opacity: 0.55; }
  50% { transform: scale(1.05); opacity: 0.95; }
}

.launch-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 24px 64px;
  border-radius: 36px;
  background: linear-gradient(135deg, #0A2047 0%, #132E57 45%, #0A2047 100%);
  border: 2px solid var(--color-elegant-gold);
  color: #FFFFFF;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.8),
              0 0 35px rgba(212, 175, 55, 0.35),
              inset 0 1px 2px rgba(255, 255, 255, 0.3);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  outline: none;
}

/* Button Shimmer Sweep Effect */
.launch-button::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -60%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.25),
    rgba(212, 175, 55, 0.5),
    transparent
  );
  transform: rotate(25deg);
  animation: buttonShimmerSweep 4.5s infinite ease-in-out;
  pointer-events: none;
}

@keyframes buttonShimmerSweep {
  0% { left: -70%; }
  30%, 100% { left: 160%; }
}

/* Hover State */
.launch-button:hover {
  transform: translateY(-4px) scale(1.04);
  background: linear-gradient(135deg, #132E57 0%, #19365F 50%, #0A2047 100%);
  border-color: #FFF2C7;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.9),
              0 0 60px rgba(212, 175, 55, 0.75),
              0 0 100px rgba(10, 32, 71, 0.9);
}

.launch-button:hover .btn-launch-icon {
  transform: translateX(4px) scale(1.15);
  color: #FFF;
}

/* Focus State for Projector Keyboard Accessibility */
.launch-button:focus-visible {
  ring: 4px solid var(--color-elegant-gold);
  box-shadow: 0 0 70px rgba(212, 175, 55, 0.8);
}

/* Active / Pressed State */
.launch-button:active,
.launch-button.launching {
  transform: scale(0.97);
  background: linear-gradient(135deg, #061530 0%, #0A2047 100%);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.9), 0 0 40px rgba(212, 175, 55, 0.5);
}

.btn-launch-icon {
  width: 32px;
  height: 32px;
  color: var(--color-elegant-gold);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}

.launch-btn-label {
  position: relative;
  z-index: 2;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

/* Activation Ripple Flash Effect */
.launch-flash-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, #FFFFFF 0%, #D4AF37 40%, #0A2047 80%, #020409 100%);
  opacity: 0;
  pointer-events: none;
  z-index: 1000;
  transition: opacity 0.55s ease-out;
}

.launch-flash-overlay.fired {
  opacity: 1;
}

/* Secondary Launch Info & Live URL Destination */
.launch-target-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 36px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(15px);
  transition: all 1.2s ease 0.7s;
}

.scene-launch.active .launch-target-info {
  opacity: 1;
  transform: translateY(0);
}

.target-url-badge {
  color: var(--color-elegant-gold);
  background: rgba(212, 175, 55, 0.1);
  padding: 4px 14px;
  border-radius: 6px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  font-size: 13.5px;
}

.keyboard-shortcut-tag {
  font-size: 12.5px;
  color: #94A3B8;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.key-badge {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  color: #FFFFFF;
}

/* ==========================================================================
   PERSISTENT HUD & CONTROLS (Discreet, Professional, Stage-Safe)
   ========================================================================== */
.presentation-hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 100;
}

/* Top Navigation Bar */
.hud-topbar {
  position: absolute;
  top: 32px;
  left: 48px;
  right: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
}

.hud-event-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.hud-event-tag .gold-pill {
  color: var(--color-elegant-gold);
  font-weight: 600;
}

.hud-top-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.hud-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 20px;
  background: rgba(10, 32, 71, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.hud-btn:hover {
  color: #FFFFFF;
  border-color: var(--color-elegant-gold);
  background: rgba(19, 46, 87, 0.85);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.2);
}

/* Bottom Presentation Timeline Bar */
.hud-bottombar {
  position: absolute;
  bottom: 28px;
  left: 48px;
  right: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  pointer-events: auto;
}

.hud-bottom-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 280px;
}

/* Replay Button (Only visible on launch screen or hover) */
.hud-replay-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 20px;
  background: rgba(10, 32, 71, 0.7);
  border: 1px solid rgba(212, 175, 55, 0.3);
  color: var(--color-elegant-gold);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.hud-replay-btn:hover {
  background: rgba(212, 175, 55, 0.2);
  border-color: var(--color-elegant-gold);
  color: #FFFFFF;
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
}

.timeline-track-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 720px;
  margin: 0 auto;
}

.timeline-markers-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.timeline-marker-item.active {
  color: var(--color-elegant-gold);
  font-weight: 600;
}

.timeline-progress-bar-bg {
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  position: relative;
}

.timeline-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #1D4ED8, #D4AF37, #FFF4D0);
  box-shadow: 0 0 10px var(--color-elegant-gold);
  border-radius: 2px;
  transition: width 0.1s linear;
}

.hud-bottom-right {
  display: flex;
  align-items: center;
  min-width: 140px;
  justify-content: flex-end;
}

.time-counter-display {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.time-counter-display span.current {
  color: #FFFFFF;
  font-weight: 600;
}

/* Minimal One-Time Presentation Start Gate (Chrome Autoplay Safety) */
.presentation-start-gate {
  position: absolute;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 7, 17, 0.88);
  backdrop-filter: blur(8px);
  cursor: pointer;
}

.start-presentation-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 38px;
  border-radius: 9999px;
  background: linear-gradient(135deg, #102A56 0%, #0A2047 100%);
  border: 1.5px solid var(--color-elegant-gold);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.25), 0 10px 30px rgba(0, 0, 0, 0.6);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.start-presentation-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 0 45px rgba(212, 175, 55, 0.45), 0 14px 40px rgba(0, 0, 0, 0.7);
  background: linear-gradient(135deg, #163870 0%, #0E2C60 100%);
}

.start-presentation-btn .start-icon {
  width: 18px;
  height: 18px;
  fill: var(--color-elegant-gold);
  stroke: var(--color-elegant-gold);
}

/* Live Event Security Lock - Prevent Accidental Navigation Outside Launch Button */
a, button {
  touch-action: manipulation;
}