:root {
  --bg: #0b0d10;
  --panel: #14171c;
  --border: #232830;
  --fg: #e6e8eb;
  --fg-mute: #9aa4b2;
  --accent: #5b8def;
}
:root[data-theme="light"] {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e0e3e9;
  --fg: #1b1f27;
  --fg-mute: #5c6675;
  --accent: #4f6ef0;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  /* Tam ekran kabuk: sayfa scroll olmaz, içerik alanı gerekirse kendi içinde kayar */
  display: flex; flex-direction: column; height: 100vh; overflow: hidden;
}
.nav {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 28px; border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; }
.dot { width: 11px; height: 11px; border-radius: 50%; background: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.theme-btn {
  width: 38px; height: 38px; border-radius: 8px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--border); color: var(--fg);
  font-size: 16px; line-height: 1; display: flex; align-items: center; justify-content: center;
}
.theme-btn:hover { border-color: var(--accent); }
.cta {
  background: var(--accent); color: #fff; text-decoration: none;
  padding: 9px 16px; border-radius: 8px; font-weight: 600; font-size: 14px;
}
.cta.lg { padding: 11px 22px; font-size: 15px; display: inline-block; margin-top: 14px; }
main {
  flex: 1 1 auto; min-height: 0; overflow-y: auto;
  width: 100%; max-width: 960px; margin: 0 auto; padding: 16px 24px;
  display: flex; flex-direction: column; justify-content: center; gap: 18px;
}
.hero { text-align: center; padding: 0; }
.hero h1 { font-size: 30px; line-height: 1.15; margin: 0 0 10px; }
.hero p { color: var(--fg-mute); font-size: 15.5px; max-width: 640px; margin: 0 auto; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; padding: 0; }
.feat { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.feat h3 { margin: 0 0 6px; font-size: 16px; }
.feat p { margin: 0; color: var(--fg-mute); font-size: 14px; }
.foot {
  flex-shrink: 0;
  border-top: 1px solid var(--border); padding: 12px 28px;
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between;
  color: var(--fg-mute); font-size: 13px;
}
@media (max-width: 560px) { .hero h1 { font-size: 30px; } }

/* Mevzuat Analizi (public Strict RAG) */
.analyze {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px 20px; margin: 0;
}
.analyze h2 { margin: 0 0 4px; font-size: 21px; }
.analyze-sub { color: var(--fg-mute); margin: 0 0 12px; font-size: 14px; }
.analyze-form { display: flex; gap: 10px; align-items: stretch; }
.analyze-form textarea {
  flex: 1; resize: vertical; font: inherit; padding: 11px 13px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg); color: var(--fg); min-height: 46px;
}
.analyze-form textarea:focus { outline: none; border-color: var(--accent); }
.analyze-form button {
  align-self: flex-end; background: var(--accent); color: #fff; border: none;
  padding: 11px 22px; border-radius: 10px; font-weight: 600; font-size: 15px; cursor: pointer;
}
.analyze-form button:disabled { opacity: .55; cursor: not-allowed; }
.analyze-status { margin-top: 12px; color: var(--fg-mute); font-size: 14px; }
.analyze-answer {
  margin-top: 14px; padding: 14px 16px; border-radius: 10px;
  background: var(--bg); border: 1px solid var(--border);
  white-space: pre-wrap; line-height: 1.55; font-size: 14.5px;
  max-height: 34vh; overflow-y: auto;
}
.analyze-cites { margin-top: 12px; font-size: 13px; color: var(--fg-mute); max-height: 14vh; overflow-y: auto; }

/* AI (provider) fallback — strict RAG yetersiz olduğunda */
.ask-wrap { margin-top: 14px; border-top: 1px dashed var(--border); padding-top: 14px; }
.ask-btn {
  background: transparent; color: var(--accent); border: 1px solid var(--accent);
  padding: 9px 16px; border-radius: 10px; font-weight: 600; font-size: 14px; cursor: pointer;
}
.ask-btn:hover:not(:disabled) { background: rgba(91,141,239,.12); }
.ask-btn:disabled { opacity: .55; cursor: not-allowed; }
.ask-head { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--fg-mute); margin: 12px 0 6px; font-weight: 600; }
.ask-box .analyze-answer { margin-top: 0; }
.analyze-cites h4 { margin: 0 0 6px; color: var(--fg); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
.analyze-cites ul { margin: 0; padding-left: 18px; }
.analyze-cites li { margin: 3px 0; }
@media (max-width: 560px) {
  .analyze-form { flex-direction: column; }
  .analyze-form button { align-self: stretch; }
}