/* Müze Acıbadem — Eğitim Kültürü ve Bilim Tarihi */

:root {
  --color-primary: #0c2d4a;
  --color-primary-light: #1a4a6e;
  --color-accent: #c9a227;
  --color-accent-hover: #b8921f;
  --color-bg: #f7f4ef;
  --color-bg-dark: #ebe6dc;
  --color-text: #2c2c2c;
  --color-text-muted: #6b6b6b;
  --color-white: #ffffff;
  --font-serif: "Playfair Display", Georgia, serif;
  --font-sans: "Inter", system-ui, sans-serif;
  --shadow: 0 4px 24px rgba(12, 45, 74, 0.08);
  --shadow-lg: 0 12px 48px rgba(12, 45, 74, 0.12);
  --radius: 4px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Top Bar ── */
.top-bar {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  padding: 8px 0;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.top-bar__item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.top-bar__item svg {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

/* ── Header ── */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid rgba(12, 45, 74, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(12, 45, 74, 0.04);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

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

.logo__img {
  height: 56px;
  width: auto;
  max-width: 240px;
  object-fit: contain;
  border-radius: var(--radius);
}

.logo__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.logo__subtitle {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 5px 0;
  transition: var(--transition);
}

/* ── Hero Slider ── */
.hero {
  position: relative;
  height: 70vh;
  min-height: 480px;
  overflow: hidden;
}

.hero__slides {
  height: 100%;
  position: relative;
}

.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  align-items: flex-end;
}

.hero__slide.active {
  opacity: 1;
}

.hero__slide img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12, 45, 74, 0.75) 0%, transparent 60%);
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: 48px 24px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  color: var(--color-white);
}

.hero__tag {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 700px;
}

.hero__desc {
  font-size: 1.05rem;
  opacity: 0.9;
  max-width: 520px;
  margin-bottom: 24px;
}

.hero__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.875rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}

.hero__btn:hover {
  background: var(--color-accent-hover);
}

.hero__dots {
  position: absolute;
  bottom: 32px;
  right: 48px;
  z-index: 3;
  display: flex;
  gap: 10px;
}

.hero__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
}

.hero__dot.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

/* ── Announcement Bar ── */
.announcement {
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 12px 0;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
}

/* ── Section ── */
.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section__desc {
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Cards Grid ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card__image {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__body {
  padding: 24px;
}

.card__tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.card__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.card__text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card__link:hover {
  color: var(--color-accent);
}

.card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.card__link:hover svg {
  transform: translateX(4px);
}

/* ── Feature Row ── */
.feature-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.feature-item {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  cursor: pointer;
}

.feature-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.feature-item:hover img {
  transform: scale(1.08);
}

.feature-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12, 45, 74, 0.8) 0%, transparent 50%);
}

.feature-item__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  z-index: 2;
  color: var(--color-white);
}

.feature-item__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.feature-item__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ── Visit Cards ── */
.visit-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.visit-card {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 40px 32px;
  text-align: center;
  border-radius: var(--radius);
  transition: transform var(--transition);
}

.visit-card:hover {
  transform: translateY(-4px);
}

.visit-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  color: var(--color-accent);
}

.visit-card__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.visit-card__text {
  font-size: 0.875rem;
  opacity: 0.8;
  margin-bottom: 20px;
}

.visit-card__btn {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: var(--transition);
}

.visit-card__btn:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* ── Timeline (Kronoloji) ── */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-bg-dark);
  transform: translateX(-50%);
}

.timeline__item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 48px;
  position: relative;
}

.timeline__item:nth-child(odd) {
  flex-direction: row-reverse;
}

.timeline__item:nth-child(odd) .timeline__content {
  text-align: right;
  padding-right: 48px;
  padding-left: 0;
}

.timeline__item:nth-child(even) .timeline__content {
  padding-left: 48px;
}

.timeline__marker {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border: 3px solid var(--color-white);
  border-radius: 50%;
  box-shadow: var(--shadow);
  z-index: 2;
}

.timeline__content {
  width: 50%;
  padding: 0 48px;
}

.timeline__year {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.timeline__title {
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline__text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ── Collection Filters ── */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--color-bg-dark);
  background: var(--color-white);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 20px;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ── Page Header ── */
.page-header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 64px 0;
  text-align: center;
}

.page-header__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.page-header__desc {
  opacity: 0.8;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Info Grid ── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px;
}

.info-block__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.info-block p {
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.info-block ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-bg-dark);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ── Footer ── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo__img {
  height: 72px;
  max-width: 280px;
  margin-bottom: 16px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.875rem;
  opacity: 0.7;
  line-height: 1.7;
}

.footer-col__title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  padding: 6px 0;
  opacity: 0.75;
  transition: opacity var(--transition);
}

.footer-col a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  opacity: 0.7;
  transition: opacity var(--transition);
}

.social-links a:hover {
  opacity: 1;
  color: var(--color-accent);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .feature-row {
    grid-template-columns: 1fr;
  }

  .visit-cards {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    height: 60vh;
    min-height: 400px;
  }

  .hero__dots {
    right: 24px;
    bottom: 24px;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline__item,
  .timeline__item:nth-child(odd) {
    flex-direction: row;
  }

  .timeline__content,
  .timeline__item:nth-child(odd) .timeline__content {
    width: 100%;
    padding-left: 48px;
    padding-right: 0;
    text-align: left;
  }

  .timeline__marker {
    left: 20px;
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .logo__img {
    height: 44px;
    max-width: 200px;
  }

  .footer-brand .logo__img {
    height: 56px;
    max-width: 220px;
  }
}