@import url('../../pst2026/css/modern.css');

:root {
  --pst-accent: #7000ff;
  --pst-accent-hover: #8a2be2;
  --pst-accent-glow: rgba(112, 0, 255, 0.35);
  --pst-surface-bg: #ffffff;
  --pst-surface-card: #ffffff;
  --pst-surface-border: rgba(0, 0, 0, 0.08);
  --pst-text-heading: #1e293b;
  --pst-text-muted: #64748b;
  --pst-body-bg: #f8f9fa;
}

[data-bs-theme="dark"] {
  --pst-accent: #a855f7;
  --pst-accent-hover: #c084fc;
  --pst-accent-glow: rgba(168, 85, 247, 0.4);
  --pst-surface-bg: #141424;
  --pst-surface-card: #1c1c32;
  --pst-surface-border: rgba(168, 85, 247, 0.22);
  --pst-text-heading: #f8fafc;
  --pst-text-muted: #94a3b8;
  --pst-body-bg: #0b0b14;

  /* Bootstrap core overrides for dark mode */
  --bs-body-bg: #0b0b14;
  --bs-body-color: #cbd5e1;
  --bs-heading-color: #f8fafc;
  --bs-border-color: rgba(255, 255, 255, 0.12);
}

.text-accent {
  color: var(--pst-accent) !important;
}

.bg-accent {
  background-color: var(--pst-accent) !important;
  color: white;
}

.border-accent {
  border-color: var(--pst-accent) !important;
}

.hero-slide-bg::before {
  background: rgba(0, 0, 0, 0.72);
}

/* Standardized Inner Page Hero Banner (Standardized to /sheffield height) */
.page-header-banner {
  position: relative;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  min-height: 240px;
  display: flex;
  align-items: center;
}

@media (max-width: 767.98px) {
  .page-header-banner {
    min-height: 200px;
    padding-top: 2.5rem !important;
    padding-bottom: 2.5rem !important;
  }
}

/* Theme Toggle Button in Navigation */
.theme-toggle-btn {
  width: 38px;
  height: 38px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50% !important;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  color: #ffffff;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--pst-accent);
  transform: scale(1.08);
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.4);
}

.theme-toggle-btn:focus-visible {
  outline: 2px solid var(--pst-accent);
  outline-offset: 2px;
}

.theme-icon {
  display: inline-block;
  transition: transform 0.35s ease;
}

.animate-pop {
  animation: themePop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes themePop {
  0% { transform: scale(0.6) rotate(-45deg); opacity: 0; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

/* --- Beautified Navbar & Nav Items --- */
.glass-nav {
  background: rgba(14, 10, 26, 0.85) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25) !important;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
  z-index: 1030 !important;
}

[data-bs-theme="dark"] .glass-nav {
  background: rgba(10, 8, 18, 0.9) !important;
  border-bottom: 1px solid rgba(168, 85, 247, 0.18);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.45) !important;
}

.navbar-brand img {
  transition: transform 0.25s ease;
}

.navbar-brand:hover img {
  transform: scale(1.05);
}

.navbar-nav {
  gap: 0.25rem;
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.82) !important;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.45rem 0.8rem !important;
  border-radius: 50rem;
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  display: inline-flex;
  align-items: center;
  position: relative;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

@media (min-width: 1400px) {
  .navbar-nav {
    gap: 0.35rem;
  }
  .navbar-nav .nav-link {
    font-size: 0.9rem;
    padding: 0.48rem 0.95rem !important;
  }
}

.navbar-nav .nav-link:hover {
  color: #ffffff !important;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

/* Active Nav Item Capsule */
.navbar-nav .nav-link.active {
  color: #ffffff !important;
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.35), rgba(168, 85, 247, 0.3));
  border: 1px solid rgba(168, 85, 247, 0.45);
  box-shadow: 0 2px 10px rgba(112, 0, 255, 0.25);
  font-weight: 600;
}

[data-bs-theme="dark"] .navbar-nav .nav-link.active {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.3), rgba(112, 0, 255, 0.4));
  border-color: rgba(168, 85, 247, 0.6);
  box-shadow: 0 2px 14px rgba(168, 85, 247, 0.3);
}

/* Dropdown Menus in Glass Navbar */
.glass-nav .dropdown-menu {
  background: rgba(18, 12, 34, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1rem;
  padding: 0.5rem;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.45);
  margin-top: 0.35rem;
  min-width: 220px;
  position: relative;
}

/* Invisible hover bridge so moving mouse pointer from toggle into menu never drops hover */
.glass-nav .dropdown-menu::before {
  content: "";
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
  background: transparent;
  display: block;
}

[data-bs-theme="dark"] .glass-nav .dropdown-menu {
  background: rgba(14, 10, 24, 0.98);
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.65);
}

.glass-nav .dropdown-item {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.55rem 0.95rem;
  border-radius: 0.6rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
}

.glass-nav .dropdown-item:hover,
.glass-nav .dropdown-item:focus {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(2px);
}

.glass-nav .dropdown-item.active,
.glass-nav .dropdown-item:active {
  color: #ffffff !important;
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.6), rgba(168, 85, 247, 0.6)) !important;
  font-weight: 600;
}

/* Desktop Dropdown: Both Click (.show) & Mouse Hover keep dropdown menu active */
@media (min-width: 992px) {
  .glass-nav .dropdown-menu {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.22s ease;
    pointer-events: none;
  }

  /* Active on hover OR click (.show) */
  .glass-nav .nav-item.dropdown:hover > .dropdown-menu,
  .glass-nav .nav-item.dropdown .dropdown-menu.show,
  .glass-nav .nav-item.dropdown.show > .dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    pointer-events: auto !important;
  }
}

.dropdown-toggle::after {
  vertical-align: 0.15em;
  margin-left: 0.35em;
  transition: transform 0.25s ease;
}

.nav-item.dropdown:hover .dropdown-toggle::after,
.nav-item.dropdown.show .dropdown-toggle::after {
  transform: rotate(180deg);
}

/* Summit CTA Button in Navbar */
.nav-link.nav-btn-summit {
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.2), rgba(168, 85, 247, 0.25));
  border: 1px solid rgba(168, 85, 247, 0.4);
  color: #ffffff !important;
  font-weight: 600;
  padding: 0.45rem 1rem !important;
  box-shadow: 0 2px 8px rgba(112, 0, 255, 0.15);
}

.nav-link.nav-btn-summit:hover {
  background: linear-gradient(135deg, #7000ff, #a855f7) !important;
  border-color: #a855f7 !important;
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(112, 0, 255, 0.4) !important;
}

.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50rem;
  padding: 0.4rem 0.75rem;
  transition: all 0.2s ease;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.25rem rgba(112, 0, 255, 0.3);
}

.navbar-toggler:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--pst-accent);
}

/* Mobile Navbar Dropdown Menu */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(15, 11, 28, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 1.25rem;
    padding: 1.25rem;
    margin-top: 0.75rem;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  }

  .navbar-nav {
    gap: 0.5rem;
  }

  .navbar-nav .nav-link {
    width: 100%;
    padding: 0.7rem 1.25rem !important;
  }
}

/* Strict Dark Mode Alignment Rules */
[data-bs-theme="dark"] body {
  background-color: var(--bs-body-bg) !important;
  color: var(--bs-body-color) !important;
}

/* Surfaces replacing light backgrounds */
[data-bs-theme="dark"] .bg-white {
  background-color: var(--pst-surface-bg) !important;
  color: var(--bs-body-color) !important;
  border: 1px solid var(--pst-surface-border);
}

[data-bs-theme="dark"] .text-dark {
  color: var(--pst-text-heading) !important;
}

[data-bs-theme="dark"] .text-secondary {
  color: var(--pst-text-muted) !important;
}

[data-bs-theme="dark"] .text-muted {
  color: var(--pst-text-muted) !important;
}

[data-bs-theme="dark"] .border {
  border-color: var(--pst-surface-border) !important;
}

[data-bs-theme="dark"] .bg-light {
  background-color: rgba(255, 255, 255, 0.06) !important;
  color: #cbd5e1 !important;
  border-color: var(--pst-surface-border) !important;
}

[data-bs-theme="dark"] .committee-card {
  background: var(--pst-surface-card);
  border-color: var(--pst-surface-border);
}

[data-bs-theme="dark"] .committee-card:hover {
  border-color: var(--pst-accent);
  box-shadow: 0 14px 30px rgba(168, 85, 247, 0.22), 0 2px 8px rgba(0, 0, 0, 0.4);
}

[data-bs-theme="dark"] .member-avatar {
  background: linear-gradient(145deg, #1c1c32, #262642);
  border-color: rgba(168, 85, 247, 0.3);
}

[data-bs-theme="dark"] .member-avatar-placeholder {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.25), rgba(76, 29, 149, 0.4));
  color: #e9d5ff;
  border-color: rgba(168, 85, 247, 0.35);
}

[data-bs-theme="dark"] .committee-filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
  color: #cbd5e1;
}

[data-bs-theme="dark"] .committee-filter-btn:hover {
  background: rgba(168, 85, 247, 0.18);
  border-color: var(--pst-accent);
  color: #f8fafc;
}

[data-bs-theme="dark"] .committee-filter-btn.active {
  background: var(--pst-accent);
  color: #ffffff;
  border-color: var(--pst-accent);
  box-shadow: 0 4px 16px rgba(168, 85, 247, 0.4);
}

[data-bs-theme="dark"] .search-glass {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--pst-surface-border);
  color: #f8fafc;
}

[data-bs-theme="dark"] .search-glass:focus {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--pst-accent);
  color: #ffffff;
  box-shadow: 0 0 0 0.25rem rgba(168, 85, 247, 0.25);
}

[data-bs-theme="dark"] .search-glass::placeholder {
  color: #64748b;
}

[data-bs-theme="dark"] .attraction-card {
  background: var(--pst-surface-card);
  border-color: var(--pst-surface-border);
}

[data-bs-theme="dark"] .attraction-card:hover {
  box-shadow: 0 14px 32px rgba(168, 85, 247, 0.22) !important;
  border-color: var(--pst-accent);
}

[data-bs-theme="dark"] .sheffield-stat-card {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(88, 28, 135, 0.2));
  border-color: rgba(168, 85, 247, 0.3);
}

[data-bs-theme="dark"] .sheffield-stat-card:hover {
  border-color: var(--pst-accent);
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.18), rgba(88, 28, 135, 0.28));
}

[data-bs-theme="dark"] .sponsor-logo-card {
  background: #1c1c32;
  border-color: var(--pst-surface-border) !important;
}

[data-bs-theme="dark"] .sponsor-logo-card:hover {
  border-color: var(--pst-accent) !important;
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.25);
}

[data-bs-theme="dark"] .card {
  background-color: var(--pst-surface-bg);
  border-color: var(--pst-surface-border);
}

[data-bs-theme="dark"] .list-group-item {
  background-color: var(--pst-surface-bg);
  color: var(--bs-body-color);
  border-color: var(--pst-surface-border);
}

[data-bs-theme="dark"] .list-group-item-action:hover,
[data-bs-theme="dark"] .list-group-item-action:focus {
  background-color: rgba(168, 85, 247, 0.12);
  color: #f8fafc;
}

[data-bs-theme="dark"] .modal-content {
  background-color: #16162a;
  color: #cbd5e1;
  border: 1px solid var(--pst-surface-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}

[data-bs-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

[data-bs-theme="dark"] .video-toggle-tab {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.14);
  color: #cbd5e1;
}

[data-bs-theme="dark"] .video-toggle-tab:hover {
  background: rgba(168, 85, 247, 0.15);
  color: #f8fafc;
}

[data-bs-theme="dark"] .video-toggle-tab.active {
  background: var(--pst-accent) !important;
  color: #ffffff !important;
}

[data-bs-theme="dark"] .alert-light {
  background-color: rgba(255, 255, 255, 0.04);
  border-color: var(--pst-surface-border);
  color: #cbd5e1;
}

[data-bs-theme="dark"] .alert-info {
  background-color: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.35);
  color: #e9d5ff;
}

[data-bs-theme="dark"] .sponsorship-banner {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(112, 0, 255, 0.18)) !important;
  border-color: rgba(168, 85, 247, 0.35) !important;
}

.sponsorship-banner {
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.06), rgba(168, 85, 247, 0.08));
  border: 1.5px dashed rgba(112, 0, 255, 0.35);
}

/* PST Cybersecurity Summit Callout Card */
.summit-highlight-card {
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.05), rgba(168, 85, 247, 0.07));
  border: 1px solid rgba(112, 0, 255, 0.18);
  border-left: 5px solid var(--pst-accent);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.summit-highlight-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(112, 0, 255, 0.12);
}

[data-bs-theme="dark"] .summit-highlight-card {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(112, 0, 255, 0.16)) !important;
  border-color: rgba(168, 85, 247, 0.35) !important;
  border-left-color: var(--pst-accent) !important;
}

/* LinkedIn Callout */
.linkedin-callout {
  background: rgba(13, 110, 253, 0.04);
  border: 1px solid rgba(13, 110, 253, 0.15);
  border-radius: 0.75rem;
  transition: all 0.25s ease;
}

.linkedin-callout:hover {
  background: rgba(13, 110, 253, 0.08);
  border-color: rgba(13, 110, 253, 0.3);
  transform: translateY(-1px);
}

[data-bs-theme="dark"] .linkedin-callout {
  background: rgba(13, 110, 253, 0.08) !important;
  border-color: rgba(13, 110, 253, 0.25) !important;
}

[data-bs-theme="dark"] .linkedin-callout:hover {
  background: rgba(13, 110, 253, 0.14) !important;
  border-color: rgba(13, 110, 253, 0.45) !important;
}

/* --- PST 2027 Organizing Committee Enhancements --- */
.committee-filter-btn {
  border-radius: 50rem;
  padding: 0.45rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid rgba(112, 0, 255, 0.2);
  background: rgba(255, 255, 255, 0.85);
  color: #495057;
  transition: all 0.25s ease;
}

.committee-filter-btn:hover {
  background: rgba(112, 0, 255, 0.08);
  border-color: var(--pst-accent);
  color: var(--pst-accent);
  transform: translateY(-1px);
}

.committee-filter-btn.active {
  background: var(--pst-accent);
  color: #fff;
  border-color: var(--pst-accent);
  box-shadow: 0 4px 14px rgba(112, 0, 255, 0.35);
}

.committee-card {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 1rem;
  background: #ffffff;
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.28s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.28s ease;
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.committee-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pst-accent), #9d4edd);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.committee-card:hover {
  transform: translateY(-5px);
  border-color: rgba(112, 0, 255, 0.35);
  box-shadow: 0 14px 30px rgba(112, 0, 255, 0.12), 0 2px 6px rgba(0, 0, 0, 0.04);
}

.committee-card:hover::before {
  opacity: 1;
}

.member-avatar-box {
  position: relative;
  flex-shrink: 0;
  width: 82px;
  height: 82px;
}

.member-avatar {
  width: 82px;
  height: 82px;
  aspect-ratio: 1 / 1;
  border-radius: 1rem;
  object-fit: cover;
  object-position: center 20%;
  background: linear-gradient(145deg, #ffffff, #edf2f7);
  border: 2px solid rgba(112, 0, 255, 0.12);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
  transition: transform 0.25s ease;
}

.committee-card:hover .member-avatar {
  transform: scale(1.04);
  border-color: var(--pst-accent);
}

.member-avatar-initials {
  width: 82px;
  height: 82px;
  aspect-ratio: 1 / 1;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #7000ff 0%, #a855f7 100%);
  box-shadow: 0 4px 12px rgba(112, 0, 255, 0.25);
  border: 2px solid rgba(255, 255, 255, 0.5);
  transition: transform 0.25s ease;
}

.committee-card:hover .member-avatar-initials {
  transform: scale(1.04);
}

.modal-member-avatar {
  width: 140px;
  height: 140px;
  aspect-ratio: 1 / 1;
  border-radius: 1.5rem;
  object-fit: cover;
  object-position: center 20%;
  background: linear-gradient(145deg, #ffffff, #edf2f7);
  border: 3px solid rgba(112, 0, 255, 0.15);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.modal-member-avatar-initials {
  width: 140px;
  height: 140px;
  border-radius: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 2.6rem;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #7000ff 0%, #a855f7 100%);
  box-shadow: 0 8px 24px rgba(112, 0, 255, 0.28);
  border: 3px solid rgba(255, 255, 255, 0.7);
}

.role-pill {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0.28rem 0.75rem;
  border-radius: 50rem;
  background: rgba(112, 0, 255, 0.09);
  color: var(--pst-accent);
  border: 1px solid rgba(112, 0, 255, 0.18);
  margin-bottom: 0.4rem;
}

.role-pill.advisory {
  background: rgba(217, 119, 6, 0.12);
  color: #b45309;
  border-color: rgba(217, 119, 6, 0.28);
}

.role-pill.general {
  background: rgba(112, 0, 255, 0.15);
  color: #5b00d6;
  border-color: rgba(112, 0, 255, 0.3);
}

.role-pill.tpc {
  background: rgba(13, 110, 253, 0.1);
  color: #0d6efd;
  border-color: rgba(13, 110, 253, 0.25);
}

.role-pill.track {
  background: rgba(25, 135, 84, 0.1);
  color: #198754;
  border-color: rgba(25, 135, 84, 0.25);
}

.contact-pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #f8f9fa;
  color: #495057;
  font-size: 0.85rem;
  transition: all 0.2s ease;
  text-decoration: none;
}

.contact-pill-btn:hover {
  background: var(--pst-accent);
  color: #ffffff;
  border-color: var(--pst-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(112, 0, 255, 0.3);
}

.search-glass {
  border-radius: 50rem;
  padding: 0.65rem 1.25rem 0.65rem 2.75rem;
  border: 1px solid rgba(112, 0, 255, 0.2);
  background: rgba(255, 255, 255, 0.9);
  transition: all 0.25s ease;
}

.search-glass:focus {
  border-color: var(--pst-accent);
  box-shadow: 0 0 0 0.25rem rgba(112, 0, 255, 0.15);
  background: #fff;
}

.search-icon-pos {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #8a8a8a;
  pointer-events: none;
}

/* Stagger entrance animation */
@keyframes fadeInUpScale {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.anim-stagger {
  animation: fadeInUpScale 0.45s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

/* Quick copy toast */
.copy-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1e1e24;
  color: #fff;
  padding: 0.75rem 1.4rem;
  border-radius: 50rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  z-index: 1080;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.copy-toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Sticky Sidebar */
.sticky-top-sidebar {
  position: -webkit-sticky;
  position: sticky;
  top: 85px;
  z-index: 90;
}

@media (min-width: 992px) {
  .sticky-top-sidebar {
    max-height: calc(100vh - 95px);
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 2px;
    padding-left: 2px;
    scrollbar-width: thin;
  }

  .sticky-top-sidebar::-webkit-scrollbar {
    width: 4px;
  }

  .sticky-top-sidebar::-webkit-scrollbar-thumb {
    background: rgba(112, 0, 255, 0.2);
    border-radius: 4px;
  }

  [data-bs-theme="dark"] .sticky-top-sidebar::-webkit-scrollbar-thumb {
    background: rgba(168, 85, 247, 0.3);
  }
}

/* =======================================================
   Responsive & Mobile-Friendly Adjustments
   ======================================================= */

/* Tablet & Mobile (< 992px) */
@media (max-width: 991.98px) {
  .sticky-top-sidebar {
    position: static !important;
    top: auto !important;
    max-height: none !important;
    overflow-y: visible !important;
    padding-right: 0 !important;
    padding-left: 0 !important;
  }
}

/* Phones (< 768px) */
@media (max-width: 767.98px) {
  .hero-slide-bg {
    min-height: 460px;
    height: auto;
  }

  .carousel-caption {
    padding: 2.5rem 1rem;
  }

  .hero-content h1.display-5 {
    font-size: 1.65rem !important;
    line-height: 1.3;
    margin-bottom: 0.75rem !important;
  }

  .hero-content p.fs-4 {
    font-size: 1.05rem !important;
    line-height: 1.4;
  }

  .page-title {
    font-size: 1.75rem;
  }
}

/* Extra Small Phones (< 576px) */
@media (max-width: 575.98px) {
  .filter-scroll-container {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Hide scrollbar for clean chip strip */
  }

  .filter-scroll-container::-webkit-scrollbar {
    display: none;
  }

  .committee-filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 0.82rem;
    padding: 0.4rem 0.85rem;
    min-height: 38px;
  }

  .committee-card {
    padding: 1rem !important;
  }

  .member-avatar,
  .member-avatar-initials {
    width: 68px;
    height: 68px;
    border-radius: 0.85rem;
  }

  .member-avatar-initials {
    font-size: 1.25rem;
  }

  .role-pill {
    font-size: 0.72rem;
    padding: 0.2rem 0.6rem;
  }

  .contact-pill-btn {
    width: 38px;
    height: 38px;
    font-size: 0.95rem;
  }

  .copy-toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    justify-content: center;
    text-align: center;
    font-size: 0.84rem;
  }

  #campusCarousel .carousel-item img {
    max-height: 260px !important;
  }

  .sponsor-logo-card {
    height: 115px;
    padding: 0.75rem;
  }

  .sponsor-logo-card img {
    max-height: 70px;
  }

  .search-glass {
    font-size: 0.9rem;
    padding-left: 2.5rem;
  }
}

/* Center campus carousel arrows on photo (accounting for caption below) */
#campusCarousel .carousel-control-prev,
#campusCarousel .carousel-control-next {
  bottom: 26px;
}

/* Responsive Video Container */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 1.25rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-facade {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  transition: transform 0.4s ease;
}

.video-facade:hover {
  transform: scale(1.02);
}

.video-facade-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(15, 5, 30, 0.25) 0%, rgba(15, 5, 30, 0.75) 100%);
}

.video-play-btn {
  position: relative;
  z-index: 2;
  width: 76px;
  height: 76px;
  background: #ff0000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 2.2rem;
  padding-left: 5px;
  box-shadow: 0 8px 30px rgba(255, 0, 0, 0.45);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.video-facade:hover .video-play-btn {
  transform: scale(1.12);
  background: #e60000;
  box-shadow: 0 12px 35px rgba(255, 0, 0, 0.7);
}

.video-facade-info {
  position: absolute;
  bottom: 18px;
  left: 20px;
  right: 20px;
  z-index: 2;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.9);
}

.video-toggle-tab {
  border-radius: 50rem;
  padding: 0.5rem 1.25rem;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.video-toggle-tab.active {
  background-color: var(--pst-accent) !important;
  color: #ffffff !important;
  border-color: var(--pst-accent) !important;
  box-shadow: 0 4px 15px rgba(112, 0, 255, 0.3);
}

/* Attraction Cards */
.attraction-card {
  background: #ffffff;
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.attraction-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(112, 0, 255, 0.12) !important;
}

.attraction-img-wrapper {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.attraction-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.attraction-card:hover .attraction-img-wrapper img {
  transform: scale(1.06);
}

.attraction-tag {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(20, 10, 40, 0.85);
  backdrop-filter: blur(8px);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 50rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* Sheffield Stat / Fact Cards */
.sheffield-stat-card {
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.05), rgba(168, 85, 247, 0.08));
  border: 1px solid rgba(112, 0, 255, 0.16);
  border-radius: 1.25rem;
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.25s ease;
  height: 100%;
}

.sheffield-stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--pst-accent);
}

.sheffield-stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(112, 0, 255, 0.12);
  color: var(--pst-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}