@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');
@import url('tokens.css');

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

a { color: inherit; }
p { color: var(--text-secondary); margin: 0 0 1em; }

.mono { font-family: var(--font-mono); }

/* --- Layout --- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  row-gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}
.brand-mark {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--strategy-semantic), var(--strategy-fixed-size));
  flex-shrink: 0;
}

nav.site-nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; row-gap: 10px; }
nav.site-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
}

@media (max-width: 640px) {
  header.site-header { flex-direction: column; align-items: flex-start; }
  nav.site-nav { width: 100%; justify-content: space-between; }
}
nav.site-nav a:hover { color: var(--text-primary); }

.lang-switch {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
}
.lang-switch button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 5px 11px;
  border-radius: 999px;
  cursor: pointer;
}
.lang-switch button.active {
  background: var(--accent);
  color: #0b0f14;
  font-weight: 600;
}

/* --- Hero --- */
.hero {
  padding: 88px 0 64px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 48px 0 40px; }
}

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.1rem);
  line-height: 1.08;
}
.hero .eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero p.lead {
  font-size: 1.08rem;
  max-width: 46ch;
}

.hero-canvas-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  aspect-ratio: 4 / 3.4;
}
.hero-canvas-wrap canvas { display: block; width: 100%; height: 100%; }
.hero-canvas-label {
  position: absolute;
  bottom: 14px; left: 16px;
  /* TR metni EN'den belirgin sekilde uzun ("doküman → 6 strateji →
     yeniden düzenleme" vs "document → 6 strategies → rearranged") -
     sagdaki rozetle (en uzun strateji adi "recursive-character" +
     dolgu ~150px) cakismasin diye genislik sinirlanip tasan kisim
     kirpiliyor. */
  max-width: calc(100% - 150px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.hero-canvas-strategy {
  position: absolute;
  bottom: 14px; right: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  transition: background 0.9s ease, color 0.9s ease;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.94rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #0b0f14; }
.btn-primary:hover { background: #6f9bf3; }
.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--surface-hover); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
  font-weight: 500;
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border-strong); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.btn[disabled] { opacity: 0.5; pointer-events: none; }

/* --- Mode select cards --- */
.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 64px 0;
}
@media (max-width: 720px) { .mode-grid { grid-template-columns: 1fr; } }

.mode-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.mode-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.mode-card .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.mode-card h3 { margin-top: 10px; font-size: 1.3rem; }
.mode-card p { font-size: 0.94rem; }

/* --- Strategy palette strip (decorative-yet-functional legend) --- */
.strategy-strip { display: flex; gap: 6px; margin-top: 18px; }
.strategy-dot {
  width: 10px; height: 10px; border-radius: 50%;
  flex-shrink: 0;
}

/* --- Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
}
.badge.badge-sample {
  background: linear-gradient(90deg, var(--strategy-semantic)22, var(--strategy-fixed-size)22);
  border-color: var(--strategy-semantic)55;
  color: var(--text-primary);
}
.badge-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); }

/* --- Section (calm, data-first for result screens) --- */
.section { padding: 40px 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.section-head h2 { font-size: 1.4rem; margin: 0; }

/* --- Progress indicator --- */
.progress-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
}
.progress-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 380px;
  margin: 22px auto 0;
  text-align: left;
}
.progress-step {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text-muted);
  opacity: 0.5;
  transition: opacity 0.3s ease, color 0.3s ease;
}
.progress-step.active { opacity: 1; color: var(--text-primary); }
.progress-step.done { opacity: 0.75; color: var(--success); }
.progress-step .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--border-strong);
  flex-shrink: 0;
}
.progress-step.active .dot { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.progress-step.done .dot { background: var(--success); }
.progress-bar-track {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  max-width: 380px;
  margin: 0 auto;
}
.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--strategy-semantic), var(--accent));
  transition: width 0.4s ease;
}

/* --- Results table (calm, data-priority) --- */
.results-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}
table.results-table { width: 100%; border-collapse: collapse; min-width: 620px; }
table.results-table th, table.results-table td {
  padding: 14px 18px;
  text-align: left;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}
table.results-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 500;
}
/* text-transform:uppercase KASITLI OLARAK KULLANILMIYOR: tarayici,
   lang="tr" ile birlikte "precision" gibi kelimeleri Turkce buyutme
   kuraliyla (noktali I) "PRECİSİON" yapiyor. Bunun yerine metin zaten
   buyuk harfle yazilir (bkz. i18n/tr.json, en.json). */
table.results-table td.num, table.results-table th.num { font-family: var(--font-mono); text-align: right; }
table.results-table tr:last-child td { border-bottom: none; }
table.results-table tr.winning td { background: var(--accent-soft); }

.strategy-label { display: flex; align-items: center; gap: 9px; }
.strategy-label .strategy-dot { width: 9px; height: 9px; }

.winner-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--success);
  color: #06231d;
  font-weight: 600;
  margin-left: 8px;
}

/* Esitlik (tie) durumunda birden fazla strateji ayni satirda "Kazanan"
   rozeti tasiyamaz - tek bir kazanan iddiasi yaniltici olurdu (bkz.
   app/embedding/retrieval.select_winning_strategy, mode1.js/mode2.js
   renderResults). Ayni sekil/boyut, kasitli olarak FARKLI renk - tek bir
   kesin kazanandan degil, birbirine yakin bir gruptan bahsettigini
   gorsel olarak da ayirt etmek icin. */
.winner-tag.tied-tag {
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  color: var(--text-primary);
}

/* Esdeger grup icinde `_pick_recommended`'in (bkz. explanation_gen.py)
   sectigi "pratik oneri" - grubun DIGER uyeleri hala "Esdeger" (yukarida)
   tasir, sadece BU satir ucuncu, ayirt edici bir renkle (amber - yesil
   "Kazanan" ve mavi "Esdeger"den farkli, ucuncu bir anlam kategorisi)
   isaretlenir. Rozet TEK basina yeterli aciklama DEGILDIR - "structural"
   mi "assumption" mi oldugu sadece aciklama kartinda gecer (bkz.
   FAZ2-FINDINGS.md #12'nin durustluk notu); rozet sadece "hangisi" sorusuna
   cevap verir, "neden" sorusuna degil. */
.winner-tag.recommended-tag {
  /* `var(--warning)22` gibi bir dogrudan-birlestirme YAZILAMAZ - CSS,
     var() alt-degerini yalniz bir fonksiyon argumaninin (ornegin
     linear-gradient(...)) icinde bitisik metinle birlestirebilir, duz
     bir property degerinde bu GECERSIZ sayilir ve TUM bildirim sessizce
     yok sayilir (bkz. tarayici testinde bulundu: arka plan seffaf
     kaliyordu, sadece kenarlik goruntuleniyordu). Bunun yerine
     `--accent-soft` ile AYNI desende, alfasi ONCEDEN gomulu ayri bir
     token kullanilir (bkz. tokens.css `--warning-soft`). */
  background: var(--warning-soft);
  border: 1px solid var(--warning);
  color: var(--text-primary);
}

/* --- Explanation card --- */
.explanation-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-top: 20px;
}
.explanation-card p { color: var(--text-primary); margin: 0; font-size: 0.98rem; }

/* --- Mod 1 galeri: ornek dokuman secici (provider-option pilleriyle
   AYNI gorsel dil, .provider-toggle'in bir kopyasi degil - farkli
   baglamda ayni sekil/renk kurallarinin tekrari, semantik olarak ayri
   sinif isimleri altinda) --- */
.doc-selector-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
/* `.section-head`'in ilk cocugu (bu pil satirini SARAN, sinifsiz div) bir
   flex item - flex item'lerin VARSAYILAN `min-width` degeri `auto`'dur,
   yani icerigin MIN-CONTENT genisligine (asagida sinirlanamaz) esittir.
   `.doc-pill-row` icindeki pillerin hepsi `white-space:nowrap` +
   `flex-wrap:nowrap` oldugu icin bu satirin min-content genisligi TUM
   pillerin toplam genisligine esittir - bu deger sifirlanmadan
   `.doc-pill-row`'un KENDI `overflow-x:auto`'su hic devreye giremez,
   bunun yerine dis flex item (ve onunla birlikte tum sayfa) yatay
   tasar (klasik ic-ice flexbox + nowrap-overflow tuzagi). Bu kural
   olmadan dar ekranda pil satiri kaymaz, SAYFA kayar. */
.section-head > div {
  min-width: 0;
}

.doc-pill-row {
  display: flex;
  gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 4px;
}
.doc-pill {
  flex-shrink: 0;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 0.86rem;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.doc-pill:hover { border-color: var(--border-strong); color: var(--text-primary); }
.doc-pill.selected { border-color: var(--accent); color: var(--text-primary); background: var(--accent-soft); }

/* --- Galeri: dokuman-basina bilgi notu (ornegin kisa/test dokumanlarinin
   neden esitlikle sonuclandigini aciklamak icin) - "ORNEK CIKTI" rozeti
   veya dil notundan farkli olarak, TUM dokumanlarda degil, yalnizca
   `data.note` alani doluysa gorunur (bkz. mode1.js renderResults). */
.doc-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--warning);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.doc-note .doc-note-icon { flex-shrink: 0; }

/* --- Download row --- */
.download-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 10px; }

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* --- Mod 2: form --- */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  max-width: 640px;
}
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.field input[type="text"],
.field input[type="password"],
.field select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.94rem;
  padding: 11px 13px;
}
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
}
.field-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 6px; }

.key-input-row { position: relative; }
.key-input-row input { padding-right: 44px; }
.key-toggle {
  position: absolute;
  right: 6px; top: 50%; transform: translateY(-50%);
  background: transparent; border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  padding: 6px 8px;
}
.key-toggle:hover { color: var(--text-primary); }

.provider-toggle { display: flex; gap: 8px; }
.provider-option {
  flex: 1;
  text-align: center;
  padding: 11px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.provider-option.selected { border-color: var(--accent); color: var(--text-primary); background: var(--accent-soft); }

.dropzone {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); }
.dropzone .filename { color: var(--text-primary); font-family: var(--font-mono); font-size: 0.85rem; margin-top: 6px; }

/* Klavye ile gezinme: .dropzone ve .provider-option gercek <div>'ler
   oldugu icin (tiklama JS ile yonetiliyor), varsayilan olarak sekmeyle
   ulasilamaz/Enter-Space ile etkinlestirilemezler. tabindex="0" +
   role="button" HTML tarafinda eklendi (bkz. mode2.html); burada TUM
   ozel etkilesimli elemanlar (ve dogal olarak odaklanabilen tum
   elemanlar) icin gorunur, tutarli bir odak stili tanimlaniyor - koyu
   tema uzerinde tarayici varsayilan mavi outline'i zor secilebiliyor. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.privacy-note {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 0.86rem;
  color: var(--text-secondary);
  margin-bottom: 22px;
}
.privacy-note strong { color: var(--text-primary); }

.network-fallback-note {
  display: none;
  background: var(--danger)15;
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-top: 16px;
}
.network-fallback-note.visible { display: block; }

.spinner-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}
.spinner {
  width: 34px; height: 34px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 3px solid var(--border-strong);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner-elapsed { font-family: var(--font-mono); color: var(--text-muted); font-size: 0.85rem; margin-top: 8px; }
/* Gecen sureden (mono, kesin) BILEREK gorsel olarak ayri - bu bir TAHMIN,
   sabit bir vaat degil (bkz. mode2.js estimateDurationTier). */
.spinner-estimate { color: var(--text-muted); font-size: 0.8rem; margin-top: 6px; font-style: italic; }

.error-banner {
  background: var(--danger)15;
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 16px 18px;
  color: var(--text-primary);
  font-size: 0.9rem;
}