:root {
  color-scheme: light;
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-2: #f2f6ff;
  --primary: #1f4b99;
  --primary-dark: #15356d;
  --accent: #f59e0b;
  --text: #0b1220;
  --muted: #5c6b85;
  --border: #e4eaf2;
  --shadow: 0 22px 60px rgba(11, 18, 32, 0.12);
  --shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.08);
}

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

body {
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #f9fbff 0%, #f2f5fb 45%, #eef2f8 100%);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  vertical-align: middle;
}

a {
  color: inherit;
  text-decoration: none;
}

main {
  flex: 1;
}

.container {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

/* HEADER */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(228, 234, 242, 0.8);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
  overflow: hidden;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
  gap: 24px;
  padding: 0;
}

.brand {
  display: flex;
  align-items: center;
  height: 100%;
  flex-shrink: 0;
  overflow: hidden;
}

.brand-logo {
  display: block;
  height: 60px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.brand-badge {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1f4b99, #2b6cb0);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 1px;
  box-shadow: 0 10px 20px rgba(31, 75, 153, 0.25);
}

.brand-title {
  font-weight: 600;
  font-size: 1.05rem;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.85rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.nav-link {
  font-weight: 600;
  color: var(--muted);
  transition: color 0.2s ease, background 0.2s ease;
  padding: 8px 12px;
  border-radius: 999px;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(31, 75, 153, 0.08);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(31, 75, 153, 0.12);
}

/* HERO */
.hero {
  padding: 90px 0 70px;
}

.hero-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 3.2vw, 3.4rem);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.eyebrow {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
}

.lead {
  color: var(--muted);
  margin-bottom: 26px;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.primary,
.ghost,
a.primary,
a.ghost {
  border: none;
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  display: inline-block;
  text-decoration: none;
}

.primary {
  background: linear-gradient(135deg, #1f4b99, #2b6cb0);
  color: #fff;
  box-shadow: 0 16px 30px rgba(31, 75, 153, 0.28);
}

.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 40px rgba(31, 75, 153, 0.32);
}

.ghost {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary);
  border: 1px solid var(--border);
}

.hero-highlights {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.hero-highlights div {
  background: var(--surface);
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.hero-highlights h3 {
  color: var(--primary);
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.hero-card {
  background: var(--surface);
  padding: 30px;
  border-radius: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hero-card h2 {
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.hero-card ul {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.hero-card li::before {
  content: "✔";
  color: var(--primary);
  margin-right: 8px;
}

/* CONTENT */
.info-grid {
  margin-top: 20px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.info-grid div {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface-2);
}

.list {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.note {
  margin-top: 18px;
  padding: 16px;
  background: rgba(245, 158, 11, 0.18);
  border-radius: 16px;
  color: #4d2f0d;
}

.list .highlight-item {
  color: var(--primary-dark);
  font-weight: 700;
}

.faq {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.faq details {
  background: var(--surface-2);
  border-radius: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border);
}

.faq summary {
  font-weight: 600;
  cursor: pointer;
}

.faq details p {
  margin-bottom: 12px;
  line-height: 1.7;
}

.faq details ul,
.faq details ol {
  margin: 12px 0;
  padding-left: 24px;
  line-height: 1.7;
}

.faq details li {
  margin-bottom: 6px;
}

.faq details strong {
  color: var(--primary);
  font-weight: 600;
}

.contact-form {
  margin-top: 16px;
  display: grid;
  gap: 14px;
}

.form-notification {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 0.95rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid transparent;
}

.form-notification--error {
  background: rgba(220, 38, 38, 0.06);
  border-color: rgba(220, 38, 38, 0.35);
  color: #7f1d1d;
}

.form-notification--success {
  background: rgba(22, 163, 74, 0.06);
  border-color: rgba(22, 163, 74, 0.35);
  color: #065f46;
}

.form-notification-icon {
  font-weight: 700;
}

.contact-form label {
  display: grid;
  gap: 6px;
  font-weight: 500;
}

.contact-form input,
.contact-form textarea {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-family: inherit;
  background: #fff;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: rgba(31, 75, 153, 0.4);
  box-shadow: 0 0 0 4px rgba(31, 75, 153, 0.12);
}

.contact-info {
  margin-top: 20px;
  color: var(--muted);
  display: grid;
  gap: 6px;
}

/* PAGE */
.page-hero {
  padding: 60px 0 40px;
  background: linear-gradient(135deg, rgba(31, 75, 153, 0.03), rgba(43, 108, 176, 0.05));
}

.page-hero h1 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.content-section {
  padding: 40px 0 80px;
}

.content-card {
  background: var(--surface);
  padding: 30px;
  border-radius: 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.content-card h2 {
  margin-bottom: 14px;
}

.content-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* HOME SECTIONS */
.home-section {
  padding-top: 10px;
}

.home-intro-grid {
  align-items: stretch;
}

.home-photo-card {
  position: relative;
}

.home-photo {
  margin-top: 16px;
  border-radius: 18px;
  height: 180px;
  background:
    radial-gradient(circle at top left, rgba(31, 75, 153, 0.35), transparent 55%),
    radial-gradient(circle at bottom right, rgba(245, 158, 11, 0.5), transparent 60%),
    linear-gradient(135deg, #0f172a, #1e293b);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.home-photo::after {
  content: "Uygulamalı eğitim alanı";
  position: absolute;
  left: 16px;
  bottom: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  color: #e5e7eb;
  font-size: 0.8rem;
}

.home-photo-caption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

.home-steps .content-card {
  margin-top: 0;
}

.steps-list {
  list-style: none;
  margin-top: 10px;
  display: grid;
  gap: 18px;
}

.steps-list li {
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.steps-list h3 {
  margin-bottom: 6px;
  font-size: 1.05rem;
  color: var(--primary-dark);
}

.home-metrics-card {
  display: grid;
  gap: 26px;
}

.home-metrics-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.home-metrics-grid h3 {
  font-size: 1.4rem;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.home-metrics-grid p {
  color: var(--muted);
}

.home-metrics-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.home-metrics-cta p {
  max-width: 520px;
}

/* FOOTER */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  background: #fff;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* MOBILE MENU */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  width: 24px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

@media (max-width: 720px) {
  .header-inner {
    height: auto;
    min-height: 88px;
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .brand {
    height: auto;
  }

  .brand-logo {
    height: 48px;
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .nav {
    width: 100%;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-top: 0;
  }

  .nav.open {
    max-height: 500px;
    opacity: 1;
    padding-top: 16px;
    padding-bottom: 8px;
  }

  .hero {
    padding-top: 55px;
  }

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

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

  .hero-actions {
    flex-direction: column;
  }

  .primary,
  .ghost {
    width: 100%;
    text-align: center;
  }

  .contact-form {
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .container {
    width: 95vw;
  }

  .brand-logo {
    height: 42px;
  }

  .brand-title {
    font-size: 0.95rem;
  }

  .brand-subtitle {
    font-size: 0.75rem;
  }

  .hero-content h1 {
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  }

  .page-hero h1 {
    font-size: clamp(1.4rem, 2vw, 1.8rem);
  }

  .hero-card {
    padding: 20px;
  }

  .content-card {
    padding: 20px;
  }

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

  .faq details {
    padding: 12px 16px;
  }

  .contact-form label {
    gap: 4px;
  }

  .contact-form input,
  .contact-form textarea {
    padding: 10px 12px;
  }
}