/* ===== GLOBAL CSS FOR AUA FORUM 2026 ===== */

:root {
  --c-bg: #ffffff;
  --c-bg-alt: #f8f9fa;
  --c-primary: #e31e89; /* Chula pink */
  --c-accent: #0066cc; /* Blue accent */
  --c-text: #1a1a1a;
  --c-text-light: #4a4a4a;
  --c-muted: #6c757d;
  --c-border-subtle: #dee2e6;
  --c-hero-overlay: rgba(227, 30, 137, 0.85); /* Pink overlay for hero */
  --c-hero-gradient-end: rgba(0, 102, 204, 0.75); /* Blue gradient end */
  --c-primary-darken: #b7156b; /* Darker Chula pink */
}

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family:
    "Inter",
    "Poppins",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

/* ===== NAVBAR ===== */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border-subtle);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-primary) !important;
}

.nav-link {
  color: var(--c-muted) !important;
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: var(--c-primary) !important;
}

/* ===== BUTTONS ===== */
.btn-primary {
  --bs-btn-bg: var(--c-primary);
  --bs-btn-border-color: var(--c-primary);
  --bs-btn-hover-bg: #ff3d9f;
  --bs-btn-hover-border-color: #ff3d9f;
  --bs-btn-color: #ffffff;
  border-radius: 999px;
  font-weight: 600;
  padding-inline: 1.6rem;
  padding-block: 0.7rem;
}

.btn-outline-primary {
  --bs-btn-color: var(--c-primary);
  --bs-btn-border-color: var(--c-primary);
  --bs-btn-hover-bg: var(--c-primary);
  --bs-btn-hover-color: #ffffff;
  border-radius: 999px;
  border-width: 1.5px;
  padding-inline: 1.6rem;
  padding-block: 0.7rem;
}

.btn-outline-light {
  --bs-btn-color: #ffffff;
  --bs-btn-border-color: var(--c-primary);
  --bs-btn-hover-bg: #ffffff;
  --bs-btn-hover-color: var(--c-primary);
  /* hover border color var(--c-primary) add darken */
  --bs-btn-hover-border-color: var(--c-primary-darken);
  border-radius: 999px;
  border-width: 1.5px;
  padding-inline: 1.6rem;
  padding-block: 0.7rem;
  color: var(--c-primary);
}

/* ===== HERO SECTION ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
  background-image: url("/assets/images/chula-building2.jpeg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--c-hero-overlay) 20%,
    var(--c-hero-gradient-end) 50%,
    rgba(227, 30, 138, 0.244) 100%
  );
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #1a1a1a;
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-family: "Poppins", system-ui, sans-serif;
  font-size: clamp(2.6rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero-title span.highlight {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.3);
  padding: 0 0.3rem;
  border-radius: 8px;
}

.hero-subtitle {
  color: #ffffff;
  max-width: 560px;
  font-size: 1rem;
  font-weight: 500;
}

.hero-meta {
  font-size: 0.95rem;
  color: #ffffff;
  font-weight: 500;
}

.hero-meta span {
  color: #a6a3ff;
  font-weight: 700;
}

.hero-visual-card {
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.521);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

.hero-pill {
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border-subtle);
  color: var(--c-muted);
}

.hero-stat {
  font-size: 0.9rem;
  color: var(--c-muted);
}

.hero-stat span {
  display: block;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--c-primary);
}

/* ===== SECTIONS ===== */
section {
  padding-block: 5rem;
}

section:nth-of-type(even) {
  background-color: var(--c-bg-alt);
}

.section-title {
  font-family: "Poppins", system-ui, sans-serif;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--c-text);
}

.section-subtitle {
  color: var(--c-muted);
  max-width: 640px;
}

/* ===== CARDS ===== */
.track-card,
.speaker-card,
.date-card,
.pricing-card {
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid var(--c-border-subtle);
  padding: 1.5rem;
  height: 100%;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.track-card:hover,
.speaker-card:hover,
.date-card:hover,
.pricing-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.track-card h5,
.speaker-card h5,
.pricing-card h5 {
  font-family: "Poppins", system-ui, sans-serif;
  font-weight: 600;
}

.text-muted-soft {
  color: var(--c-muted);
}

.badge-soft {
  background: rgba(227, 30, 137, 0.1);
  border-radius: 999px;
  color: var(--c-primary);
  padding: 0.25rem 0.75rem;
  font-size: 0.78rem;
  border: 1px solid rgba(227, 30, 137, 0.25);
}

/* ===== DATE CARD ENHANCEMENTS ===== */
.date-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.date-card h5 {
  font-size: 1rem;
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== TIMELINE ===== */
.timeline-wrapper {
  background: rgba(248, 249, 250, 0.5);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--c-border-subtle);
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--c-primary), var(--c-accent));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 0.25rem;
  width: 16px;
  height: 16px;
  background: #ffffff;
  border: 3px solid var(--c-primary);
  border-radius: 50%;
  z-index: 1;
}

.timeline-item.active .timeline-marker {
  background: var(--c-primary);
  width: 20px;
  height: 20px;
  left: calc(-2rem - 2px);
  top: 0.125rem;
  box-shadow: 0 0 0 4px rgba(227, 30, 137, 0.2);
}

.timeline-content h6 {
  font-family: "Poppins", system-ui, sans-serif;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.timeline-content p {
  font-size: 0.875rem;
}

/* ===== TRACK IMAGE CARDS ===== */
.track-img-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  height: 220px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease,
    border-color 0.35s ease;
}

.track-img-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 102, 204, 0.85),
    rgba(0, 102, 204, 0.3)
  );
  transition: opacity 0.35s ease;
}

.track-img-content {
  position: absolute;
  inset: 0;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  z-index: 2;
}

.track-img-title {
  font-family: "Poppins", system-ui, sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
}

.track-img-sub {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.9);
}

.track-img-overlay {
  position: absolute;
  inset: 0;
  padding: 1.2rem;
  background: linear-gradient(
    135deg,
    rgba(0, 102, 204, 0.95) 0%,
    rgba(227, 30, 137, 0.9) 100%
  );
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
  z-index: 3;
}

.track-img-overlay h5,
.track-img-overlay p {
  color: #ffffff;
}

.track-img-overlay p {
  font-size: 0.85rem;
}

.track-img-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.6);
  border-color: rgba(227, 30, 137, 0.6);
}

.track-img-card:hover::before {
  opacity: 0;
}

.track-img-card:hover .track-img-overlay {
  opacity: 1;
  transform: translateY(0);
}

/* ===== ABOUT SECTION ===== */
#about {
  position: relative;
  background-image: url("/assets/images/bg1.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
}

#about::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.427) 0%,
    rgba(248, 249, 250, 0.427) 50%,
    rgba(255, 255, 255, 0.427) 100%
  );
  z-index: 1;
}

#about::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 30% 50%,
    rgba(0, 102, 204, 0.08),
    transparent 90%
  );
  z-index: 2;
}

#about .container {
  position: relative;
  z-index: 3;
}

/* ===== SPEAKERS SECTION ===== */
#speakers {
  position: relative;
  background-image: url("/assets/images/speakers-bg.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
}

#speakers::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.572) 0%,
    rgba(248, 249, 250, 0.572) 50%,
    rgba(255, 255, 255, 0.572) 100%
  );
  z-index: 1;
}

#speakers::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 70% 50%,
    rgba(227, 30, 137, 0.06),
    transparent 90%
  );
  z-index: 2;
}

#speakers .container {
  position: relative;
  z-index: 3;
}

.speaker-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--c-border-subtle);
  border-radius: 20px;
  padding: 1.5rem;
  height: 100%;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.speaker-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  border-color: rgba(227, 30, 137, 0.3);
}

.speaker-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  font-weight: 700;
  font-family: "Poppins", sans-serif;
  object-fit: cover;
  object-position: top;
  border: 3px solid var(--c-primary);
  box-shadow: 0 4px 12px rgba(227, 30, 137, 0.15);
  transition: all 0.3s ease;
}

.speaker-card img.speaker-avatar {
  background: transparent;
}

.speaker-avatar:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 24px rgba(227, 30, 137, 0.25);
  border-color: var(--c-accent);
}

.about-content-box {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--c-border-subtle);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.about-content-box:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--c-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.about-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(
    135deg,
    rgba(0, 102, 204, 0.1),
    rgba(227, 30, 137, 0.1)
  );
  border: 1px solid rgba(0, 102, 204, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* ===== PARTNERS MARQUEE ===== */
.partners-marquee-wrapper {
  margin-top: 3rem;
  padding-block: 2rem;
  overflow: hidden;
  position: relative;
}

.partners-marquee {
  overflow: hidden;
  position: relative;
  width: 100%;
  mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
}

.partners-track {
  display: flex;
  gap: 3rem;
  animation: marqueeScroll 30s linear infinite;
  width: max-content;
}

.partner-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-box {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  height: 80px;
  background: #ffffff;
  border: 1px solid var(--c-border-subtle);
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-text);
  text-align: center;
  transition: all 0.3s ease;
  line-height: 1.3;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.partner-box:hover {
  background: var(--c-bg-alt);
  border-color: var(--c-primary);
  color: var(--c-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.partner-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.7;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.partner-box:hover img {
  opacity: 1;
  transform: scale(1.05);
}

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

.partners-marquee:hover .partners-track {
  animation-play-state: paused;
}

/* ===== VENUE CAROUSEL ===== */
.venue-carousel {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.venue-carousel .carousel-inner {
  border-radius: 12px;
}

.venue-carousel .carousel-item {
  height: 467px;
  position: relative;
}

.venue-carousel .carousel-item img {
  object-fit: cover;
  height: 100%;
  width: 100%;
}

.venue-carousel .carousel-caption {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1rem 1rem;
  text-align: left;
}

.venue-carousel .carousel-caption h5 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: #ffffff;
}

.venue-carousel .carousel-caption p {
  font-size: 0.9rem;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
}

.venue-carousel .carousel-control-prev-icon,
.venue-carousel .carousel-control-next-icon {
  background-color: rgba(227, 30, 137, 0.8);
  border-radius: 50%;
  padding: 1.5rem;
}

.venue-carousel .carousel-control-prev-icon:hover,
.venue-carousel .carousel-control-next-icon:hover {
  background-color: var(--c-primary);
}

.venue-carousel .carousel-indicators button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
}

.venue-carousel .carousel-indicators button.active {
  background-color: var(--c-primary);
}

/* ===== VENUE INFO CARDS ===== */
.venue-info-stack {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.venue-info-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border-subtle);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  gap: 1rem;
  transition: all 0.3s ease;
}

.venue-info-card:hover {
  border-color: var(--c-primary);
  box-shadow: 0 4px 16px rgba(227, 30, 137, 0.1);
  transform: translateY(-2px);
}

.venue-info-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(
    135deg,
    rgba(227, 30, 137, 0.1),
    rgba(0, 102, 204, 0.1)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  font-size: 1.5rem;
}

.venue-info-content h6 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--c-text);
}

.venue-info-content p {
  color: var(--c-muted);
  line-height: 1.6;
}

.venue-info-content .btn {
  font-size: 0.85rem;
  padding: 0.4rem 0.8rem;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--c-border-subtle);
  padding-block: 2rem;
  font-size: 0.85rem;
  color: var(--c-muted);
  background: var(--c-bg-alt);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991.98px) {
  .hero-section {
    text-align: left;
    background-attachment: scroll;
  }

  .hero-visual-card {
    margin-top: 2rem;
  }

  .navbar-nav .nav-link {
    padding-block: 0.5rem;
  }

  #about {
    background-attachment: scroll;
  }

  .venue-carousel .carousel-item {
    height: 300px;
  }

  .venue-info-card {
    margin-bottom: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .partners-track {
    animation: none !important;
  }
  .partners-marquee {
    justify-content: center;
  }
  .partners-track {
    flex-wrap: wrap;
    justify-content: center;
  }
}

.page-header {
  background: linear-gradient(135deg, var(--c-bg-alt), var(--c-bg));
  padding-block: 4rem 3rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--c-border-subtle);

  background-image: url("/assets/images/bg1.png");
  background-size: 100% auto;
  background-repeat: no-repeat;
  background-position: center top;
  background-attachment: scroll;
}

/* Responsive background for page header */
@media (min-width: 992px) {
  .page-header {
    background-size: contain;
    background-attachment: fixed;
  }
}

@media (max-width: 767px) {
  .page-header {
    background-size: 150% auto;
    background-position: center top;
  }
}

.page-header .container {
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.521);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.1);
}