/* ==========================================
   REUSABLE UI COMPONENTS
   Educational Institute Website
   ========================================== */

/* 1. Top Announcement / Quick Contact Bar */
.top-bar {
  background-color: var(--neutral-900);
  color: var(--neutral-300);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-info {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.top-bar-info a {
  color: var(--neutral-300);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.top-bar-info a:hover {
  color: var(--accent-gold);
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.badge-announcement {
  background-color: var(--accent-gold);
  color: var(--neutral-900);
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  text-transform: uppercase;
  margin-right: 0.5rem;
}

/* 2. Main Navigation Header */
.main-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-sticky);
  transition: all var(--transition-normal);
}

.main-header.scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(255, 255, 255, 0.98);
}

.header-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-accent) 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.4rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.brand-logo-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--neutral-900);
  line-height: 1.1;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--neutral-500);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-custom-logo {
  max-height: 44px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}

/* Desktop Nav Menu & Dropdowns */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--neutral-700);
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand-accent);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  width: 220px;
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  border: 1px solid var(--neutral-100);
  z-index: var(--z-sticky);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--neutral-700);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-link:hover {
  background-color: var(--brand-blue-light);
  color: var(--brand-blue);
}

/* Header Buttons */
.header-ctas {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.45rem 0.95rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-primary {
  background-color: var(--brand-accent);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background-color: var(--brand-blue-hover);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--accent-gold);
  color: var(--neutral-900);
  font-weight: 700;
}

.btn-secondary:hover {
  background-color: var(--accent-gold-hover);
  color: var(--neutral-900);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--neutral-300);
  color: var(--neutral-700);
}

.btn-outline:hover {
  border-color: var(--brand-accent);
  color: var(--brand-accent);
  background-color: var(--brand-blue-light);
}

.btn-outline-white {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-whatsapp {
  background-color: #25d366;
  color: #ffffff;
  font-weight: 600;
}

.btn-whatsapp:hover {
  background-color: #1eb956;
  color: #ffffff;
}

/* Mobile Hamburger Toggle */
.hamburger-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-drawer);
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--neutral-800);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background-color: #ffffff;
  box-shadow: var(--shadow-xl);
  z-index: var(--z-drawer);
  transition: right var(--transition-normal);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
}

.mobile-drawer.open {
  right: 0;
}

.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-drawer) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.drawer-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  list-style: none;
  margin-top: 2rem;
}

.mobile-nav-link {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--neutral-800);
  display: block;
  padding: 0.5rem 0;
}

.mobile-nav-link:hover {
  color: var(--brand-accent);
}

/* 3. Program / Course Cards */
.card-course {
  background-color: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--neutral-200);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.card-course:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-blue-light);
}

.card-course-media {
  position: relative;
  height: 200px;
  overflow: hidden;
  background-color: var(--neutral-100);
}

.card-course-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card-course:hover .card-course-media img {
  transform: scale(1.05);
}

.badge-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background-color: var(--brand-accent);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.card-course-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-course-category {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-accent);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.card-course-title {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.card-course-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem 1rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--neutral-500);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--neutral-100);
}

.card-course-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.card-course-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-course-fee {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--neutral-900);
}

/* 4. Stat Counter Card */
.stat-card {
  background-color: #ffffff;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid var(--neutral-100);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2.75rem;
  color: var(--brand-blue);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--neutral-600);
}

/* 5. Faculty Card */
.card-faculty {
  background-color: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--neutral-200);
  overflow: hidden;
  text-align: center;
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

.card-faculty:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.faculty-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 1.25rem auto;
  object-fit: cover;
  border: 3px solid var(--brand-blue-light);
}

.faculty-name {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
}

.faculty-designation {
  font-size: 0.88rem;
  color: var(--brand-accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.faculty-dept {
  font-size: 0.8rem;
  color: var(--neutral-500);
  background-color: var(--neutral-100);
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

/* 6. Event Card */
.card-event {
  background-color: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--neutral-200);
  display: flex;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card-event:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--brand-accent);
}

.event-date-badge {
  background-color: var(--brand-blue);
  color: #ffffff;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 90px;
}

.event-date-badge .day {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
}

.event-date-badge .month {
  font-size: 0.85rem;
  text-transform: uppercase;
  font-weight: 600;
}

.event-info {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.event-title {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.event-location {
  font-size: 0.85rem;
  color: var(--neutral-500);
}

/* 7. Footer */
.main-footer {
  background-color: var(--neutral-900);
  color: var(--neutral-300);
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-xl);
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col h4 {
  color: #ffffff;
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: var(--neutral-400);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--neutral-500);
}

/* 8. Mobile Sticky Bottom CTA Bar */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.12);
  padding: 0.65rem 1rem;
  padding-bottom: max(0.65rem, env(safe-area-inset-bottom));
  z-index: var(--z-sticky);
  border-top: 1px solid rgba(226, 232, 240, 0.8);
}

.mobile-sticky-cta-inner {
  display: flex;
  gap: 0.65rem;
  max-width: 500px;
  margin: 0 auto;
}

.mobile-sticky-cta .btn {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.65rem 0.5rem;
  border-radius: var(--radius-lg);
  min-height: 44px;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .top-bar { display: none; }
  .header-wrapper { height: 64px; }
  .brand-logo-icon { width: 36px; height: 36px; font-size: 1.15rem; }
  .brand-custom-logo { max-height: 36px; max-width: 160px; }
  .brand-title {
    font-size: 0.95rem;
    max-width: 190px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .brand-subtitle { font-size: 0.65rem; }
  
  .hamburger-toggle {
    display: flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    padding: 8px;
    box-sizing: border-box;
    background-color: var(--neutral-100);
  }
  .nav-menu, .header-ctas { display: none; }
  .mobile-sticky-cta { display: block; }
  body { padding-bottom: 78px; }

  .card-course-media { height: 180px; }
  .card-faculty { padding: 1.25rem 1rem; }
  .stat-number { font-size: 2rem; }
  .stat-card { padding: 1.25rem 0.85rem; }
}

@media (max-width: 576px) {
  .brand-title { max-width: 150px; }
  .card-event { flex-direction: column; }
  .event-date-badge {
    flex-direction: row;
    justify-content: flex-start;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    width: 100%;
    min-width: 100%;
  }
  .event-date-badge .day { font-size: 1.25rem; }
  .event-date-badge .month { font-size: 0.8rem; }
  .event-info { padding: 1rem; width: 100%; }
}

/* 9. Lightbox & Modal Backdrop */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background-color: #ffffff;
  border-radius: var(--radius-2xl);
  max-width: 550px;
  max-height: 90vh;
  overflow-y: auto;
  width: 100%;
  padding: 2rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

@media (max-width: 640px) {
  .modal-box {
    padding: 1.25rem;
    border-radius: var(--radius-xl);
    max-width: 92vw;
  }
}

.modal-overlay.active .modal-box {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 1.5rem;
  color: var(--neutral-500);
  cursor: pointer;
}

.modal-close-btn:hover {
  color: var(--neutral-900);
}