/* ══════════════════════════════════════════
   ASAL 39 —  Shared Stylesheet
   ══════════════════════════════════════════ */

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

:root {
  --iu-crimson: #990000;
  --crimson: #8B0000;
  --navy:    #0D1B2A;
  --gold:    #C9A84C;
  --offwhite:#F7F5F0;
  --charcoal:#1F1F1F;
  --white:   #FFFFFF;
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.07);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 14px 40px rgba(0,0,0,0.16);
  --radius:  14px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--charcoal);
  background: var(--white);
  overflow-x: hidden;
  padding-top: 64px; /* nav height */
}

body.menu-open {
  overflow: hidden;
}

/* ── TYPOGRAPHY ── */
h1,h2,h3,h4 { font-family: 'Playfair Display', serif; line-height: 1.2; }

/* ── UTILITIES ── */
.eyebrow {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.6rem;
}
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
}
.section-heading {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 1rem;
}
.btn-primary {
  display: inline-block;
  background: var(--crimson);
  color: var(--white);
  text-decoration: none;
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.03em;
  transition: transform 0.2s, box-shadow 0.25s;
  cursor: pointer;
  border: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 22px rgba(139,0,0,0.45); }

.btn-secondary {
  display: inline-block;
  border: 2px solid rgba(255,255,255,0.65);
  color: var(--white);
  text-decoration: none;
  padding: 0.78rem 1.8rem;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.25s;
  background: transparent;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }

.btn-full {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--crimson);
  color: var(--white);
  text-decoration: none;
  padding: 0.72rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  transition: box-shadow 0.2s, transform 0.2s;
}
.btn-full:hover { box-shadow: 0 4px 16px rgba(139,0,0,0.35); transform: translateY(-1px); }

.btn-outline {
  display: block;
  width: 100%;
  text-align: center;
  border: 2px solid var(--crimson);
  color: var(--crimson);
  text-decoration: none;
  padding: 0.68rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s;
  margin-top: 0.65rem;
  background: transparent;
}
.btn-outline:hover { background: var(--crimson); color: var(--white); }

/* ── REVEAL ANIMATION ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ══════════════════════════════════════════
   NAVBAR
   ══════════════════════════════════════════ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(13,27,42,0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  border-bottom: 1px solid rgba(201,168,76,0.12);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}
.nav-logo-img {
  height: 30px;
  width: auto;
  filter: brightness(0) invert(1) grayscale(1) contrast(1.2);
  opacity: 0.92;
  background: transparent;
  border-radius: 4px;
}
.nav-logo-sep {
  display: none;
  width: 1px;
  height: 20px;
  background: rgba(201,168,76,0.35);
}
.nav-logo-text {
  font-family: 'Playfair Display', serif;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 700;
  position: relative;
}
.nav-logo-text::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 28px; height: 2px;
  background: var(--gold);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  position: relative;
  transition: color 0.2s;
  font-weight: 500;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0.7rem; right: 0.7rem;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-register {
  background: var(--crimson) !important;
  color: var(--white) !important;
  border-radius: 50px !important;
  padding: 0.42rem 1rem !important;
  font-weight: 600 !important;
  margin-left: 0.5rem;
  transition: box-shadow 0.25s, transform 0.2s !important;
}
.nav-register::after { display: none !important; }
.nav-register:hover { box-shadow: 0 0 18px rgba(139,0,0,0.5) !important; transform: translateY(-1px) !important; }

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span { display: block; width: 22px; height: 2px; background: var(--white); transition: all 0.3s; border-radius: 2px; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13,27,42,0.98);
  z-index: 998;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  backdrop-filter: blur(10px);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  transition: color 0.2s, letter-spacing 0.2s;
  font-weight: 500;
}
.mobile-menu a:hover { color: var(--gold); letter-spacing: 0.12em; }
.mobile-menu .nav-register {
  background: var(--crimson) !important;
  color: var(--white) !important;
  border-radius: 50px !important;
  text-align: center;
  margin-top: 1rem;
  padding: 1rem 2.5rem !important;
  font-size: 1.2rem !important;
}


/* ══ COMPOSITE LOGO STYLING ══ */
.dept-logo-composite {
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo-trident {
  height: 40px; 
  width: auto;
  border-radius: 2px;
}
.logo-text-img {
  height: 32px; 
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.95;
  display: none;
}


/* ══════════════════════════════════════════
   HERO (index only)
   ══════════════════════════════════════════ */
#home {
  height: calc(100vh - 64px);
  min-height: 560px;
  background: var(--navy);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-align: center;
}

#hero-canvas { position: absolute; inset: 0; z-index: 0; }

.hero-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(13,27,42,0.2) 0%, rgba(13,27,42,0.65) 100%);
  z-index: 1;
}

.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  padding: 2rem;
  max-width: 900px;
  animation: fadeUp 1s ease 0.3s both;
}

.hero-logo-container {
  margin-bottom: 2.5rem;
  display: flex;
  justify-content: center;
}

.hero-variant .logo-trident { height: 80px; }
.hero-variant .logo-text-img { height: 65px; display: block; }

.hero-eyebrow {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  display: block;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.08;
  margin-bottom: 1.2rem;
  letter-spacing: -0.01em;
}

.hero-date {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gold);
  letter-spacing: 0.14em;
  font-weight: 500;
  margin-bottom: 0.8rem;
}

.hero-tagline {
  font-style: italic;
  color: rgba(255,255,255,0.6);
  font-size: 1rem;
  margin-bottom: 2.5rem;
}

.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.scroll-indicator {
  position: absolute; bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.4);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  opacity: 0;
  animation: fadeIn 1s ease 1.8s both;
}
.scroll-arrow {
  width: 18px; height: 18px;
  border-right: 2px solid rgba(255,255,255,0.35);
  border-bottom: 2px solid rgba(255,255,255,0.35);
  transform: rotate(45deg);
  animation: bounce 1.6s ease-in-out infinite;
}

/* ══════════════════════════════════════════
   COUNTDOWN
   ══════════════════════════════════════════ */
#countdown-strip {
  background: #060e18;
  padding: 3rem 1rem;
  text-align: center;
  border-top: 1px solid rgba(201,168,76,0.12);
  border-bottom: 1px solid rgba(201,168,76,0.12);
}
.countdown-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.75rem;
}
.countdown-grid { display: flex; justify-content: center; align-items: center; }
.countdown-box { display: flex; flex-direction: column; align-items: center; padding: 0 1rem; }
.countdown-num {
  font-family: 'Space Mono', monospace;
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  min-width: 2ch;
  text-align: center;
}
.countdown-unit {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 0.5rem;
  font-family: 'Space Mono', monospace;
}
.countdown-colon {
  font-family: 'Space Mono', monospace;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--gold);
  opacity: 0.6;
  align-self: flex-start;
  padding-top: 0.05em;
  animation: blink 1s step-end infinite;
}


/* ══════════════════════════════════════════
   QUICK NAV CARDS
   ══════════════════════════════════════════ */

#quicknav {
  background: var(--white);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.quicknav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.ql-card {
  flex: 1;
  min-width: 140px;
  max-width: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem 1rem;
  background: var(--offwhite);
  border-radius: 12px;
  text-decoration: none;
  color: var(--charcoal);
  font-weight: 600;
  font-size: 0.8rem;
  border-top: 4px solid var(--gold);
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-align: center;
}
.ql-card-icon { font-size: 1.8rem; }
.ql-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); background: #fff; border-top-color: var(--iu-crimson); }



/* ══════════════════════════════════════════
   ABOUT
   ══════════════════════════════════════════ */
#about { background: var(--offwhite); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.about-body { color: #4a4a4a; line-height: 1.85; font-size: 1rem; margin-bottom: 2rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.tag {
  border: 1.5px solid var(--crimson);
  color: var(--crimson);
  padding: 0.28rem 0.8rem;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  background: var(--white);
  transition: background 0.2s, color 0.2s;
  cursor: default;
}
.tag:hover { background: var(--crimson); color: var(--white); }

.stats-block { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; text-align: center; }
.stat-item { padding: 2rem 1rem; position: relative; }
.stat-item + .stat-item::before {
  content: ''; position: absolute;
  left: 0; top: 22%; bottom: 22%;
  width: 1px; background: var(--gold); opacity: 0.45;
}
.stat-num {
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 900;
  color: var(--crimson);
  line-height: 1;
  display: block;
}
.stat-lbl { font-size: 0.7rem; color: #888; margin-top: 0.4rem; letter-spacing: 0.06em; text-transform: uppercase; font-weight: 500; }

/* ══════════════════════════════════════════
   IN MEMORIAM
   ══════════════════════════════════════════ */
#memoriam { background: var(--navy); }
.memoriam-inner { max-width: 700px; margin: 0 auto; padding: 5rem 2rem; text-align: center; }
.memoriam-eyebrow { font-family: 'Playfair Display', serif; font-style: italic; color: var(--gold); font-size: 1rem; letter-spacing: 0.1em; display: block; margin-bottom: 1.2rem; }
.memoriam-rule { width: 50px; height: 1px; background: var(--gold); margin: 0 auto 2.5rem; }
.memoriam-name { font-family: 'Playfair Display', serif; color: var(--white); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; margin-bottom: 0.65rem; }
.memoriam-dates { color: var(--gold); letter-spacing: 0.2em; font-size: 0.88rem; margin-bottom: 2.5rem; }
.memoriam-quote {
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: var(--radius);
  padding: 2rem;
  color: rgba(255,255,255,0.78);
  font-style: italic;
  line-height: 1.9;
  font-size: 0.9rem;
  position: relative;
}
.memoriam-quote::before {
  content: '"';
  font-family: 'Playfair Display', serif;
  font-size: 4rem;
  color: rgba(201,168,76,0.18);
  position: absolute;
  top: -0.5rem; left: 1rem;
  line-height: 1;
}

/* ══════════════════════════════════════════
   SPEAKER CARDS
   ══════════════════════════════════════════ */
.speakers-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
}

.speaker-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.06);
}
.speaker-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.speaker-card:hover .speaker-body { border-left-color: var(--crimson); }

.speaker-photo {
  width: 100%; height: 260px;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.speaker-photo-placeholder {
  width: 100%; height: 260px;
  background: linear-gradient(135deg, #1a2a3a, #0d1b2a);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Playfair Display', serif;
  color: rgba(255,255,255,0.25);
  font-size: 3rem; font-weight: 700;
  letter-spacing: 0.05em;
}

.speaker-body { padding: 1.2rem 1.25rem 1.5rem; border-left: 3px solid var(--gold); transition: border-left-color 0.3s; }
.speaker-name { font-family: 'Playfair Display', serif; color: var(--crimson); font-size: 1.02rem; font-weight: 700; margin-bottom: 0.3rem; }
.speaker-affil { color: #888; font-size: 0.78rem; line-height: 1.5; }

/* ══════════════════════════════════════════
   PRACTICAL INFO
   ══════════════════════════════════════════ */
.practical-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.info-card { padding: 2rem; background: var(--offwhite); border-radius: var(--radius); }
.info-icon { font-size: 2rem; margin-bottom: 1.2rem; display: block; }
.info-heading { font-family: 'Playfair Display', serif; font-size: 1.25rem; font-weight: 700; margin-bottom: 0.65rem; }
.info-text { color: #555; font-size: 0.875rem; line-height: 1.75; margin-bottom: 1.5rem; }

.hotel-deal {
  background: var(--white);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  margin-bottom: 1rem;
  font-size: 0.82rem;
  color: #666;
}
.hotel-deal strong { display: block; margin-top: 0.2rem; font-size: 0.95rem; color: var(--charcoal); }

.required-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--charcoal);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.28rem 0.72rem;
  border-radius: 50px;
  margin-bottom: 1.1rem;
}

/* ══════════════════════════════════════════
   COMMITTEE
   ══════════════════════════════════════════ */
.committee-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 3rem;
}

.committee-card {
  background: rgba(255,255,255,0.07);
  border-radius: 10px;
  padding: 1.5rem 1.25rem;
  text-align: center;
  border-top: 2px solid var(--gold);
  transition: background 0.25s, border-color 0.25s;
}
.committee-card:hover { background: rgba(255,255,255,0.12); border-top-color: var(--crimson); }
.committee-name { color: var(--white); font-size: 0.95rem; font-weight: 500; }

/* ══════════════════════════════════════════
   SPONSORS
   ══════════════════════════════════════════ */
.sponsors-row { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2.5rem; }
.sponsor-card {
  background: var(--white);
  border-radius: 10px;
  padding: 1.2rem 2rem;
  box-shadow: var(--shadow-sm);
  font-weight: 500;
  color: #555;
  font-size: 0.875rem;
  border: 1px solid rgba(0,0,0,0.07);
  min-width: 180px;
  text-align: center;
  transition: box-shadow 0.2s, transform 0.2s;
}
.sponsor-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ══════════════════════════════════════════
   PAGE HERO (inner pages)
   ══════════════════════════════════════════ */
.page-hero {
  background: var(--navy);
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(139,0,0,0.12) 0%, transparent 60%);
}
.page-hero-inner { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.page-hero h1 { font-family: 'Playfair Display', serif; color: var(--white); font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; margin-bottom: 0.75rem; }
.page-hero p { color: rgba(255,255,255,0.65); font-size: 1rem; font-style: italic; }
.page-hero .eyebrow { justify-content: center; }

/* ══════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════ */
footer {
  background: #06101a;
  color: rgba(255,255,255,0.45);
  text-align: center;
  padding: 2.5rem 2rem;
  font-size: 0.78rem;
  line-height: 1.9;
  border-top: 1px solid rgba(201,168,76,0.1);
}
footer a { color: var(--gold); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer strong { color: rgba(255,255,255,0.72); }

/* ══════════════════════════════════════════
   KEYFRAMES
   ══════════════════════════════════════════ */
@keyframes fadeUp   { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes fadeIn   { from { opacity: 0; } to { opacity: 1; } }
@keyframes bounce   { 0%,100% { transform: rotate(45deg) translateY(0); } 50% { transform: rotate(45deg) translateY(5px); } }
@keyframes blink    { 0%,100% { opacity: 0.6; } 50% { opacity: 0.15; } }

/* ══════════════════════════════════════════
   MEDIA QUERIES
   ══════════════════════════════════════════ */

@media (min-width: 768px) {
  .nav-links { display: flex; }
  .hamburger { display: none; }
  .nav-logo-sep { display: block; }
  .logo-text-img { display: block; }
  .about-grid { grid-template-columns: 6fr 4fr; }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .practical-grid { grid-template-columns: repeat(2, 1fr); }
  .committee-grid { grid-template-columns: repeat(2, 1fr); }
  
}

@media (min-width: 960px) {
  .speakers-grid { grid-template-columns: repeat(4, 1fr); }
  .practical-grid { grid-template-columns: repeat(3, 1fr); }
  .committee-grid { grid-template-columns: repeat(3, 1fr); }
}