/* ============================================
   INSTITUTE WEBSITE — PURPLE THEME
   ============================================ */

/* ---------- Theme Overrides ---------- */
.theme-institute {
  --primary: var(--purple-500);
  --primary-dark: var(--purple-700);
  --primary-light: var(--purple-50);
  --primary-100: var(--purple-100);
  --primary-200: var(--purple-200);
  --primary-rgb: 91, 45, 142;
}

.theme-institute ::selection {
  background: var(--purple-200);
}

/* ---------- Nav (Institute) ---------- */
.theme-institute .nav {
  background: transparent;
}

.theme-institute .nav--scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 20px rgba(91, 45, 142, 0.08);
}

.theme-institute .nav__link::after {
  background: var(--purple-500);
}

.theme-institute .nav__link:hover {
  color: var(--purple-500);
}

.theme-institute .nav__link--active {
  color: var(--purple-500);
}

.theme-institute .nav__toggle span {
  background: var(--neutral-700);
}

.theme-institute .nav__switch {
  background: var(--teal-50);
  color: var(--teal-600);
  border: 1px solid var(--teal-200);
}

.theme-institute .nav__switch:hover {
  background: var(--teal-500);
  color: var(--white);
}

.theme-institute .nav .lang-toggle {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
}

.theme-institute .nav--scrolled .lang-toggle,
.theme-institute .nav.nav--open .lang-toggle {
  background: var(--purple-50);
  color: var(--purple-700);
  border: 1px solid var(--purple-200);
}

.theme-institute .nav--scrolled .lang-toggle:hover,
.theme-institute .nav.nav--open .lang-toggle:hover {
  background: var(--purple-600);
  color: var(--white);
  border-color: var(--purple-600);
}

/* ---------- Hero (Institute) ---------- */
.theme-institute .hero__bg {
  background: linear-gradient(160deg, #24113F 0%, #3E1D62 35%, #5B2D8E 70%, #7B42B8 100%);
}

.theme-institute .hero__title span {
  background: linear-gradient(135deg, #C095DB, #FFFFFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.theme-institute .hero__image-placeholder {
  background: linear-gradient(135deg, rgba(91,45,142,0.3), rgba(62,29,98,0.5));
  border: 1px solid rgba(255,255,255,0.1);
}

/* ---------- Stats (Institute) ---------- */
.theme-institute .stats-bar {
  background: var(--neutral-50);
}

.theme-institute .stat-item__number {
  background: linear-gradient(135deg, var(--purple-500), var(--purple-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Service Cards (Institute) ---------- */
.theme-institute .service-card::before {
  background: linear-gradient(90deg, var(--purple-400), var(--purple-600));
}

.theme-institute .service-card__icon {
  background: var(--purple-50);
  color: var(--purple-500);
}

/* ---------- Program Cards (Institute) ---------- */
.theme-institute .program-card__image {
  background: linear-gradient(135deg, var(--purple-50), var(--purple-100));
}

.theme-institute .program-card__category {
  background: var(--purple-50);
  color: var(--purple-600);
}

.theme-institute .program-card__link {
  color: var(--purple-500);
}

/* ---------- CTA Banner (Institute) ---------- */
.theme-institute .cta-banner {
  background: linear-gradient(135deg, var(--purple-700), var(--purple-500));
}

/* ---------- Testimonials (Institute) ---------- */
.theme-institute .testimonial-card__quote {
  color: var(--purple-300);
}

.theme-institute .testimonial-card__avatar {
  background: linear-gradient(135deg, var(--purple-400), var(--purple-600));
}

/* ---------- About (Institute) ---------- */
.theme-institute .about-hero {
  background: linear-gradient(160deg, #24113F, #5B2D8E);
  color: var(--white);
}

.theme-institute .about-hero__image {
  background: linear-gradient(135deg, rgba(91,45,142,0.2), rgba(62,29,98,0.3));
  border: 1px solid rgba(255,255,255,0.1);
}

.theme-institute .value-card__icon {
  background: var(--purple-50);
  color: var(--purple-500);
}

.theme-institute .mission-vision__card--mission {
  background: linear-gradient(135deg, var(--purple-500), var(--purple-700));
  color: var(--white);
}

.theme-institute .mission-vision__card--vision {
  background: var(--neutral-900);
  color: var(--white);
}

/* ---------- Contact (Institute) ---------- */
.theme-institute .contact-hero {
  background: linear-gradient(160deg, #24113F, #5B2D8E);
  color: var(--white);
}

.theme-institute .contact-info__icon {
  background: var(--purple-50);
  color: var(--purple-500);
}

.theme-institute .form-input:focus,
.theme-institute .form-textarea:focus {
  border-color: var(--purple-500);
  box-shadow: 0 0 0 3px rgba(91, 45, 142, 0.1);
}

/* ---------- Page Header (Institute) ---------- */
.theme-institute .page-header {
  background: linear-gradient(160deg, #24113F, #5B2D8E);
  color: var(--white);
}

/* ---------- Program Detail (Institute) ---------- */
.theme-institute .program-detail__badge {
  background: var(--purple-50);
  color: var(--purple-600);
}

.theme-institute .program-detail__toggle {
  background: var(--purple-50);
  color: var(--purple-500);
}

.theme-institute .program-detail__meta-item strong {
  color: var(--purple-600);
}

.theme-institute .programs-filter__btn:hover,
.theme-institute .programs-filter__btn--active {
  border-color: var(--purple-500);
  background: var(--purple-500);
  color: var(--white);
}

/* ---------- Footer (Institute) ---------- */
.theme-institute .footer {
  background: #1A0F2E;
}

.theme-institute .footer__social a {
  background: rgba(91, 45, 142, 0.2);
  color: var(--purple-400);
}

.theme-institute .footer__social a:hover {
  background: var(--purple-500);
  color: var(--white);
}

/* ---------- Admissions (Institute specific) ---------- */
.admissions-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  max-width: 700px;
  margin: 0 auto;
}

.admission-step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.admission-step__number {
  width: 56px;
  height: 56px;
  min-width: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 800;
  font-family: var(--font-en);
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(91, 45, 142, 0.3);
}

.admission-step__content {
  flex: 1;
  padding-top: var(--space-3);
}

.admission-step__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: var(--space-2);
}

.admission-step__desc {
  font-size: var(--text-base);
  color: var(--neutral-500);
  line-height: 1.7;
}

/* Requirements list */
.requirements-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.requirement-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--neutral-700);
  transition: all var(--duration-fast);
}

.requirement-item:hover {
  border-color: var(--purple-300);
  box-shadow: var(--shadow-sm);
}

.requirement-item__check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--purple-50);
  color: var(--purple-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ---------- Campus Gallery ---------- */
.campus-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.campus-gallery__item {
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--purple-50), var(--purple-100));
  color: var(--purple-300);
  font-size: var(--text-sm);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
}

.campus-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--duration-slow) var(--ease-out);
}

.campus-gallery__item:hover img {
  transform: scale(1.05);
}

.campus-gallery__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1rem 0.75rem;
  background: linear-gradient(to top, rgba(20, 8, 35, 0.88), transparent);
  color: #ffffff;
  font-size: var(--text-xs);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
}

.campus-gallery__item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.campus-gallery__item:nth-child(1) {
  grid-column: span 2;
  grid-row: span 2;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .admissions-steps {
    gap: var(--space-8);
  }

  .admission-step {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .requirements-list {
    grid-template-columns: 1fr;
  }

  .campus-gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .campus-gallery__item:nth-child(1) {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 480px) {
  .campus-gallery {
    grid-template-columns: 1fr;
  }

  .campus-gallery__item:nth-child(1) {
    grid-column: span 1;
  }
}