/* ── 테마 변수 ── */
:root {
  --bg: #f5f5f7;
  --card-bg: #ffffff;
  --card-thumb-bg: #f0f0f5;
  --navbar-bg: rgba(255,255,255,0.9);
  --text-primary: #1a1a2e;
  --text-secondary: #555577;
  --text-muted: #aaaacc;
  --accent: #5566ff;
  --accent-light: #eef0ff;
  --border: #e0e0ee;
  --shadow: rgba(85, 102, 255, 0.15);
  --footer-bg: #1a1a2e;
  --footer-text: #aaaacc;
  --ad-bg: #f8f8fc;
}

body.dark {
  --bg: #0d0d1a;
  --card-bg: #1a1a2e;
  --card-thumb-bg: #12122a;
  --navbar-bg: rgba(13,13,26,0.95);
  --text-primary: #e8e8f8;
  --text-secondary: #9999bb;
  --text-muted: #55557a;
  --accent: #7788ff;
  --accent-light: #1a1a3a;
  --border: #2a2a42;
  --shadow: rgba(119, 136, 255, 0.2);
  --footer-bg: #080814;
  --footer-text: #55557a;
  --ad-bg: #12122a;
}

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

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Segoe UI', Apple SD Gothic Neo, sans-serif;
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── 네비게이션 ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--navbar-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}

.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.3s;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  flex: 1;
}

.nav-links a {
  display: block;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--accent-light);
  color: var(--accent);
}

.theme-toggle {
  background: var(--accent-light);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.1s;
  flex-shrink: 0;
}

.theme-toggle:hover { transform: rotate(20deg); }

/* ── 푸터 ── */
.footer {
  margin-top: auto;
  background: var(--footer-bg);
  padding: 32px 20px;
  transition: background 0.3s;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--footer-text);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--accent); }

.footer-copy {
  color: var(--footer-text);
  font-size: 0.82rem;
}