/* ================================================================
   ULAKBİM Portal — Styles
   ================================================================ */

:root {
  --primary:       #003F87;
  --primary-dark:  #002a5e;
  --primary-light: #1a5fa8;
  --accent:        #E63329;
  --accent-light:  #ff4f46;
  --bg:            #f4f6f9;
  --bg-dark:       #0d1e3a;
  --bg-card:       #ffffff;
  --text:          #1a2640;
  --text-muted:    #5a6a85;
  --border:        #dde3ed;
  --radius:        10px;
  --shadow:        0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-hover:  0 6px 24px rgba(0, 63, 135, 0.15);
  --transition:    0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ─────────────────────────────────────────────────────── */
.site-header {
  background: var(--primary);
  border-bottom: 3px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Logo */
.logo-area {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-img {
  height: 40px;
  width: auto;
}

.logo-fallback {
  display: none;
  flex-direction: column;
  line-height: 1.1;
}

.logo-tubitak {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
}

.logo-ulakbim {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.04em;
}

/* Header Nav */
.header-nav {
  display: flex;
  gap: 4px;
}

.header-nav a {
  color: rgba(255,255,255,0.82);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

.header-nav a:hover {
  background: rgba(255,255,255,0.12);
  color: #ffffff;
}

.header-nav a.active {
  background: rgba(255,255,255,0.18);
  color: #ffffff;
}

/* ── Hero ────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  color: #fff;
  padding: 80px 0 88px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.btn {
  display: inline-block;
  padding: 11px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(230, 51, 41, 0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

/* ── Section ─────────────────────────────────────────────────────── */
.section {
  padding: 72px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

.section-title {
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-sub {
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 0.95rem;
}

.section-dark .section-sub {
  color: rgba(255,255,255,0.55);
}

/* ── Service Cards ───────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  cursor: pointer;
  position: relative;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--primary-light);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.card-icon svg { width: 22px; height: 22px; }

.icon-api    { background: #e8f0fe; color: #1a5fa8; }
.icon-trdizin{ background: #fce8e6; color: #c5221f; }
.icon-wiki   { background: #e6f4ea; color: #1e7e34; }
.icon-atif   { background: #fef3cd; color: #856404; }

.card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}

.card-arrow {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 1rem;
  color: var(--border);
  transition: color var(--transition), transform var(--transition);
}

.card:hover .card-arrow {
  color: var(--primary);
  transform: translateX(3px);
}

/* ── Layer Cards ─────────────────────────────────────────────────── */
.layers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.layer-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 24px;
  transition: background var(--transition), border-color var(--transition);
}

.layer-card:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.2);
}

.layer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.layer-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.08em;
}

.layer-status {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 12px;
  background: rgba(46, 213, 115, 0.15);
  color: #2ed573;
  border: 1px solid rgba(46, 213, 115, 0.3);
}

.status-roadmap {
  background: rgba(255, 165, 0, 0.12);
  color: #ffa500;
  border-color: rgba(255, 165, 0, 0.3);
}

.status-plan {
  background: rgba(116, 185, 255, 0.12);
  color: #74b9ff;
  border-color: rgba(116, 185, 255, 0.3);
}

.layer-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.layer-card p {
  font-size: 0.845rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: 16px;
}

.layer-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: #74b9ff;
  transition: color var(--transition);
}

.layer-link:hover { color: #a8d0ff; }

/* ── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--primary-dark);
  border-top: 3px solid var(--accent);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}

.footer-tagline {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  margin-top: 2px;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-links a:hover { color: #fff; }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 52px 0 60px; }
  .header-nav a { padding: 6px 10px; font-size: 0.82rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}