:root {
  color-scheme: dark;
  --bg: #070b14;
  --bg2: #0d1528;
  --panel: #121c32;
  --panel2: #0a1020;
  --accent: #3d8bfd;
  --accent2: #5ee69a;
  --warn: #ffb347;
  --danger: #ff6b6b;
  --purple: #a78bfa;
  --text: #e8eefc;
  --muted: #8fa3c9;
  --border: #243456;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Roboto, system-ui, -apple-system, Segoe UI, sans-serif;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 139, 253, 0.12), transparent),
    radial-gradient(900px 500px at 90% 0%, rgba(94, 230, 154, 0.08), transparent),
    var(--bg);
  color: var(--text);
}

a { color: #b8d4ff; text-decoration: none; }
a:hover { text-decoration: underline; }

.guide-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(7, 11, 20, 0.94);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 2000;
}

.guide-topbar h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.guide-topbar .sub {
  color: var(--muted);
  font-size: 0.84rem;
  margin-top: 3px;
}

.guide-topbar-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  text-decoration: none;
}

.btn.primary {
  background: linear-gradient(135deg, #2f6fcc, var(--accent));
  border-color: #2f6fcc;
  color: #fff;
}

.hero-strip {
  padding: 20px 24px 12px;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-strip p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  max-width: 920px;
  font-size: 0.95rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.hero-badge {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(61, 139, 253, 0.12);
  border: 1px solid rgba(61, 139, 253, 0.28);
  font-size: 0.78rem;
  color: #cfe0ff;
}

.cat-nav-wrap {
  position: sticky;
  top: 72px;
  z-index: 1500;
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
}

.cat-nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  max-width: 1400px;
  margin: 0 auto;
  padding: 10px 8px;
  scrollbar-width: thin;
}

.cat-btn {
  flex-shrink: 0;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: 0.86rem;
  white-space: nowrap;
}

.cat-btn:hover { background: rgba(255, 255, 255, 0.04); color: var(--text); }

.cat-btn.active {
  background: rgba(61, 139, 253, 0.18);
  border-color: rgba(61, 139, 253, 0.45);
  color: #fff;
}

.guide-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 0;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 180px);
}

@media (max-width: 960px) {
  .guide-layout { grid-template-columns: 1fr; }
  .topic-sidebar {
    border-right: none !important;
    border-bottom: 1px solid var(--border);
    max-height: 220px;
  }
}

.topic-sidebar {
  background: var(--panel2);
  border-right: 1px solid var(--border);
  padding: 14px;
  overflow-y: auto;
}

.topic-sidebar h2 {
  margin: 4px 10px 12px;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.topic-search {
  width: 100%;
  margin-bottom: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

.topic-btn {
  width: 100%;
  text-align: left;
  padding: 11px 12px;
  margin-bottom: 6px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  line-height: 1.35;
}

.topic-btn:hover { background: rgba(61, 139, 253, 0.08); }

.topic-btn.active {
  background: rgba(61, 139, 253, 0.16);
  border-color: rgba(61, 139, 253, 0.4);
}

.topic-btn .ico { margin-right: 8px; }

.topic-btn small {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  margin-top: 3px;
  padding-left: 26px;
}

.guide-content {
  padding: 20px 22px 40px;
  overflow-y: auto;
}

.content-header {
  margin-bottom: 18px;
}

.content-header h2 {
  margin: 0 0 8px;
  font-size: 1.55rem;
  letter-spacing: -0.02em;
}

.content-header .lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.95rem;
  max-width: 820px;
}

.overview-card {
  padding: 14px 16px;
  border-radius: var(--radius);
  background: rgba(94, 230, 154, 0.07);
  border: 1px solid rgba(94, 230, 154, 0.22);
  margin-bottom: 18px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.step-grid {
  display: grid;
  gap: 10px;
}

.step-card {
  display: flex;
  gap: 12px;
  padding: 14px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

.step-card p strong { color: var(--accent2); font-weight: 600; }

.tip-box {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 179, 71, 0.1);
  border: 1px solid rgba(255, 179, 71, 0.28);
  font-size: 0.86rem;
  line-height: 1.45;
}

.warn-box {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.28);
  font-size: 0.86rem;
  line-height: 1.45;
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.feature-card {
  padding: 14px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.map-demo-section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.map-demo-section h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.map-demo-note {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
  margin-bottom: 12px;
}

/* Harita interaktif demo — mevcut map-demo.css ile uyumlu */
.map-demo-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 16px;
  align-items: start;
}

@media (max-width: 1100px) {
  .map-demo-layout { grid-template-columns: 1fr; }
}

.related-topics {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.related-topics h3 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: var(--muted);
}

.related-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 0.8rem;
  cursor: pointer;
}

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