/* ==========================================================================
   ASR DEGREE COLLEGE — MOTION DESIGN SYSTEM
   Professional 2026 Higher-Education Animation Engine
   Vanilla CSS Transitions & Keyframes
   ========================================================================== */

/* ---- Top Scroll Progress Bar ---- */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--crimson) 0%, var(--gold-accent) 50%, var(--blue-2) 100%);
  width: 0%;
  z-index: 10000;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ---- Welcome Intro Sequence ---- */
.welcome-overlay {
  position: fixed;
  inset: 0;
  background: var(--navy-dark);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.welcome-overlay.fade-out {
  opacity: 0;
  transform: translateY(-100%);
  pointer-events: none;
}

.already-welcomed #welcomeOverlay,
.already-welcomed .welcome-overlay {
  display: none !important;
}

/* Screen 1: Geometric background lines */
.welcome-geo-grid {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 50% 50%, rgba(217, 37, 36, 0.12), transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  opacity: 0;
  animation: welcomeFadeIn 0.5s ease-out forwards;
}

.welcome-triangle-accent {
  position: absolute;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(217, 37, 36, 0.25);
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
  animation: welcomeTriangleSpin 1.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Screen 2 & 3: Logo & Title reveal */
.welcome-stage {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.welcome-logo {
  height: 84px;
  width: auto;
  opacity: 0;
  transform: scale(0.85);
  filter: drop-shadow(0 10px 25px rgba(0, 0, 0, 0.5));
  animation: welcomeLogoReveal 0.6s 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.welcome-line-draw {
  width: 0px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--crimson), transparent);
  margin: 18px auto 14px;
  animation: welcomeLineWidth 0.6s 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.welcome-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 3vw, 26px);
  letter-spacing: 0.18em;
  color: #ffffff;
  text-transform: uppercase;
  opacity: 0;
  filter: blur(8px);
  animation: welcomeTextBlur 0.5s 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.welcome-subtitle {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: #fbbf24;
  text-transform: uppercase;
  margin-top: 6px;
  opacity: 0;
  transform: translateY(10px);
  animation: welcomeSubFade 0.5s 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.welcome-phrase {
  margin-top: 14px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: #cbd5e1;
  font-style: italic;
  opacity: 0;
  animation: welcomeSubFade 0.5s 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes welcomeFadeIn {
  to { opacity: 1; }
}

@keyframes welcomeTriangleSpin {
  0% { transform: scale(0.4) rotate(-30deg); opacity: 0; }
  60% { opacity: 0.8; }
  100% { transform: scale(1) rotate(0deg); opacity: 0.25; }
}

@keyframes welcomeLogoReveal {
  to { opacity: 1; transform: scale(1); }
}

@keyframes welcomeLineWidth {
  to { width: 180px; }
}

@keyframes welcomeTextBlur {
  to { opacity: 1; filter: blur(0px); }
}

@keyframes welcomeSubFade {
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Custom Precision Cursor ---- */
.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 999999;
  will-change: transform;
}

.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--crimson);
  border-radius: 50%;
  margin: -3px 0 0 -3px;
  transition: transform 0.05s ease-out;
  pointer-events: none;
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  border: 1.5px solid rgba(217, 37, 36, 0.6);
  border-radius: 50%;
  margin: -18px 0 0 -18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 0.25s var(--ease), height 0.25s var(--ease), margin 0.25s var(--ease), border-color 0.25s, background 0.25s;
  pointer-events: none;
}

.cursor-badge {
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #ffffff;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s, transform 0.2s;
  white-space: nowrap;
}

/* Cursor State Variations */
.custom-cursor.state-hover-btn .cursor-ring {
  width: 50px;
  height: 50px;
  margin: -25px 0 0 -25px;
  border-color: var(--crimson);
  background: rgba(217, 37, 36, 0.15);
}

.custom-cursor.state-action .cursor-ring {
  width: 64px;
  height: 64px;
  margin: -32px 0 0 -32px;
  border-color: #ffffff;
  background: var(--navy);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.custom-cursor.state-action .cursor-badge {
  opacity: 1;
  transform: scale(1);
}

.custom-cursor.state-link .cursor-ring {
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border-color: var(--gold-accent);
}

/* ---- Word Reveal & Hero Typography Animation ---- */
.word-reveal {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
}

.word-reveal-inner {
  display: inline-block;
  transform: translateY(110%);
  opacity: 0;
  transition: transform 0.8s var(--ease), opacity 0.8s var(--ease);
}

.word-reveal-inner.in-view {
  transform: translateY(0);
  opacity: 1;
}

/* Stagger hero word entry */
.hero-stage-1 { animation: heroRevealWord 0.7s 0.1s var(--ease) forwards; }
.hero-stage-2 { animation: heroRevealWord 0.7s 0.25s var(--ease) forwards; }
.hero-stage-3 { animation: heroRevealWord 0.7s 0.4s var(--ease) forwards; }

@keyframes heroRevealWord {
  from { opacity: 0; transform: translateY(40px) scale(0.96); filter: blur(4px); }
  to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

/* ---- Continuous Marquee Flow ---- */
.marquee-strip {
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  background: var(--navy-dark);
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  user-select: none;
}

.marquee-content {
  display: inline-flex;
  gap: 32px;
  animation: marqueeRoll 28s linear infinite;
  align-items: center;
}

.marquee-strip:hover .marquee-content {
  animation-play-state: paused;
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  display: inline-flex;
  align-items: center;
  gap: 16px;
}

.marquee-item::after {
  content: '◆';
  color: var(--crimson);
  font-size: 8px;
}

@keyframes marqueeRoll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---- Clip-Path Geometric Reveal ---- */
.clip-reveal {
  clip-path: polygon(0 0, 0 0, 0 100%, 0% 100%);
  transition: clip-path 1s var(--ease);
}

.clip-reveal.visible {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

/* ---- Continuous Scroll Indicator Line ---- */
.scroll-indicator-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.scroll-indicator-line {
  width: 48px;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.scroll-indicator-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--crimson);
  transform: translateX(-100%);
  animation: scrollLinePass 2s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes scrollLinePass {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(0%); }
  100% { transform: translateX(100%); }
}

/* ---- Back to Top Smooth Button ---- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 96px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s, background 0.2s, border-color 0.2s;
  z-index: 40;
}

.back-to-top.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--crimson);
  border-color: var(--crimson);
  transform: translateY(-3px);
}

.back-to-top span {
  display: inline-block;
  transition: transform 0.25s var(--ease);
}
.back-to-top:hover span {
  transform: translateY(-3px);
}

/* ---- Brand Logo Micro-Motion & Hover Glow ---- */
.brand-logo {
  transition: transform 0.4s var(--ease), filter 0.4s var(--ease);
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.35));
  animation: brandLogoPulse 4.5s ease-in-out infinite;
}

.brand:hover .brand-logo {
  transform: scale(1.09) rotate(-2deg);
  filter: drop-shadow(0 0 14px rgba(217, 37, 36, 0.7)) drop-shadow(0 0 5px rgba(245, 158, 11, 0.5)) !important;
}

@keyframes brandLogoPulse {
  0%, 100% {
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.35));
  }
  50% {
    filter: drop-shadow(0 0 12px rgba(217, 37, 36, 0.5)) drop-shadow(0 0 4px rgba(245, 158, 11, 0.4));
  }
}

/* ---- High-End Button Shimmer Light Sweep ---- */
.btn-crimson, .btn-navy {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-crimson::before, .btn-navy::before {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 80%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.28) 50%,
    transparent 100%
  );
  transform: skewX(-25deg);
  transition: left 0.75s ease-in-out;
  pointer-events: none;
  z-index: 2;
}

.btn-crimson:hover::before, .btn-navy:hover::before {
  left: 140%;
}

.btn .btn-arrow {
  display: inline-block;
  transition: transform 0.3s var(--ease);
}

.btn:hover .btn-arrow {
  transform: translate(3px, -3px);
}

/* ---- Stat Item Counter Glow & Micro-Lift ---- */
.stat-flow-item {
  transition: transform 0.35s var(--ease), background 0.35s var(--ease);
  position: relative;
}

.stat-flow-item:hover {
  transform: translateY(-4px);
}

.stat-flow-item strong {
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

.stat-flow-item:hover strong {
  color: #ffffff;
  text-shadow: 0 0 20px rgba(217, 37, 36, 0.6);
}

/* ---- Album Link Cards Micro-Motion ---- */
.album-link-card {
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease) !important;
}

.album-link-card:hover {
  transform: translateY(-6px) !important;
  box-shadow: 0 16px 36px -6px rgba(7, 26, 56, 0.18), 0 0 0 1px var(--crimson) !important;
}

.album-link-card:hover .album-card-action {
  color: var(--crimson) !important;
  transform: translateX(4px);
}

.album-card-action {
  transition: transform 0.25s var(--ease), color 0.25s ease;
}

/* ---- Pulse Wave Animation ---- */
.pulse-dot {
  position: relative;
}

.pulse-dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: inherit;
  opacity: 0.6;
  animation: pulseDotWave 2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes pulseDotWave {
  0% { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* ---- Reduced Motion Safety ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .welcome-overlay {
    display: none !important;
  }
  .custom-cursor {
    display: none !important;
  }
  .marquee-content {
    animation: none !important;
  }
  .clip-reveal {
    clip-path: none !important;
  }
}

@media (hover: none) and (pointer: coarse) {
  .custom-cursor {
    display: none !important;
  }
}