/**
 * GTOS Design Tokens v0.1 — PROGRAM-002 / UX-001
 * Additive layer: does not remove legacy --primary-color aliases.
 * Constitution: Performance Before Effects · Enterprise Before Fancy
 */
:root {
  color-scheme: light;

  /* ===== PALET KATMANI (H1-TOKENS) — GTOS-PALETTE-BEGIN =====
   * Ham renk degerlerinin tek kaynagi. Bu tokenlar TEMAYA GORE DEGISMEZ:
   * --gtos-slate-500 acik temada da koyu temada da ayni hexdir.
   *
   * Iki katmanli mimari:
   *   1. Palet (burasi)      — degismez ham deger.  --gtos-slate-500
   *   2. Anlam (asagisi)     — temaya duyarli rol.  --gtos-color-text-muted
   *
   * Bilesen CSS'i ANLAM katmanini kullanmalidir. Palet, anlam tokenlarini
   * tanimlamak ve henuz anlami netlesmemis eski degerleri sabitlemek icindir.
   * Palete dogrudan referans veren her yer, ilerleyen turlarda anlam
   * tokenina tasinacak teknik borctur.
   */

  /* Notr — slate olcegi (kabuk, metin, sinir, zemin) */
  --gtos-slate-50: #f8fafc;
  --gtos-slate-100: #f1f5f9;
  --gtos-slate-200: #e2e8f0;
  --gtos-slate-300: #cbd5e1;
  --gtos-slate-400: #94a3b8;
  --gtos-slate-500: #64748b;
  /* slate-500 beyaz uzerinde 4.76:1 gecer ama tonlu acik zeminlerde
   * (#f4f6f8, #ecf9f8, #f4f0e9) 4.19-4.41 araligina duser. 550 ara tonu
   * en zorlu tonlu zeminde 4.71:1 verir; slate-600'e gitmeden AA saglar. */
  --gtos-slate-550: #5d6c80;
  --gtos-slate-600: #475569;
  --gtos-slate-700: #334155;
  --gtos-slate-800: #1e293b;
  --gtos-slate-900: #0f172a;
  --gtos-slate-950: #020617;
  --gtos-gray-200: #e5e7eb;
  --gtos-gray-300: #d1d5db;
  --gtos-gray-500: #6b7280;
  --gtos-gray-600: #4b5563;
  --gtos-gray-700: #374151;
  --gtos-gray-800: #1f2937;
  --gtos-gray-900: #111827;
  --gtos-white: #ffffff;
  --gtos-black: #000000;

  /* Marka — teal olcegi (birincil eylem, AI, bilgi) */
  --gtos-teal-50: #f0fdfa;
  --gtos-teal-100: #ccfbf1;
  --gtos-teal-200: #99f6e4;
  --gtos-teal-300: #5eead4;
  --gtos-teal-400: #2dd4bf;
  --gtos-teal-500: #14b8a6;
  --gtos-teal-600: #0d9488;
  --gtos-teal-650: #0c8479;
  --gtos-teal-700: #0f766e;
  --gtos-teal-800: #115e59;
  --gtos-teal-900: #134e4a;

  /* Marka — altin (premium vurgu). KURUMSAL: #c9a227 tek marka altinidir.
   * #cfaf6b ve #e8cf88 ayni ailenin acik tonlaridir, ayri marka rengi degil. */
  --gtos-gold-400: #e8cf88;
  --gtos-gold-500: #cfaf6b;
  --gtos-gold-600: #c9a227;

  /* Anlam paleti — yesil (dogrulandi) */
  --gtos-emerald-400: #34d399;
  --gtos-emerald-500: #10b981;
  --gtos-emerald-600: #059669;
  --gtos-emerald-700: #047857;
  --gtos-emerald-750: #0c855d;
  --gtos-green-500: #22c55e;
  --gtos-green-700: #15803d;
  --gtos-green-800: #166534;

  /* Anlam paleti — amber (uyari) */
  --gtos-amber-400: #fbbf24;
  --gtos-amber-500: #f59e0b;
  --gtos-amber-700: #b45309;
  --gtos-amber-750: #a56a07;
  --gtos-amber-800: #92400e;

  /* Anlam paleti — kirmizi (kritik risk) */
  --gtos-red-400: #f87171;
  --gtos-red-500: #ef4444;
  --gtos-red-600: #dc2626;
  --gtos-red-650: #c81e1e;
  --gtos-red-700: #b91c1c;
  --gtos-red-800: #991b1b;

  /* Anlam paleti — mavi / mor (baglanti, veri gorsellestirme) */
  --gtos-sky-500: #0ea5e9;
  --gtos-sky-700: #0369a1;
  --gtos-blue-500: #3b82f6;
  --gtos-blue-600: #2563eb;
  --gtos-indigo-500: #6366f1;
  --gtos-violet-500: #8b5cf6;
  --gtos-purple-500: #a855f7;

  /* Olcek tamamlayicilari — yukaridaki ailelerin eksik basamaklari.
   * Ayri bir "renk" degil; ayni olceklerin devami. */
  --gtos-gray-50: #f9fafb;
  --gtos-gray-100: #f3f4f6;
  --gtos-stone-200: #e7e5e4;
  --gtos-neutral-50: #fafafa;
  --gtos-emerald-50: #ecfdf5;
  --gtos-emerald-100: #d1fae5;
  --gtos-green-100: #dcfce7;
  --gtos-green-300: #86efac;
  --gtos-green-400: #4ade80;
  --gtos-green-600: #16a34a;
  --gtos-amber-200: #fde68a;
  --gtos-amber-300: #fcd34d;
  --gtos-amber-600: #d97706;
  --gtos-amber-900: #78350f;
  --gtos-orange-500: #f97316;
  --gtos-red-200: #fecaca;
  --gtos-red-300: #fca5a5;
  --gtos-sky-100: #e0f2fe;
  --gtos-sky-400: #38bdf8;
  --gtos-cyan-500: #06b6d4;
  --gtos-blue-700: #1d4ed8;
  --gtos-indigo-50: #eef2ff;
  --gtos-indigo-100: #e0e7ff;
  --gtos-indigo-700: #4338ca;
  --gtos-indigo-800: #3730a3;

  /* GTOS'a ozgu tonlar (Tailwind olceginde karsiligi yok) */
  --gtos-shell-mist-200: #e8eef7;
  --gtos-shell-ink-400: #8b9bb4;
  --gtos-shell-ink-975: #070a12;
  --gtos-navy-800: #0f2744;
  --gtos-bronze-600: #8a6d3c;
  /* B04 e-Belge ekrani bilincli olarak muhasebe yazilimi estetigi tasir.
   * -500 dekoratif vurgudur (beyaz uzerinde 3.67, bilesen esigi 3'u gecer);
   * uzerine BEYAZ YAZI gelen zeminlerde -600 kullanilir (5.11). */
  --gtos-ebs-blue-500: #3c8dbc;
  --gtos-ebs-blue-600: #31749c;
  --gtos-shell-tint-50: #f4f6fb;
  --gtos-shell-tint-100: #eef4ff;
  --gtos-shell-ink-500: #8b95ab;
  --gtos-shell-ink-900: #0b1120;
  --gtos-shell-ink-950: #04070f;
  --gtos-ink-on-gold: #1c1917;
  /* ===== GTOS-PALETTE-END ===== */

  /* --- Platform shell (light default) --- */
  --maytras-shell-bg: #f4f7fb;
  --maytras-shell-bg-gradient: radial-gradient(900px 500px at 88% -15%, rgba(13, 148, 136, 0.12), transparent 68%),
    radial-gradient(700px 420px at -10% 10%, rgba(14, 165, 233, 0.1), transparent 64%),
    linear-gradient(180deg, #f4f7fb 0%, var(--gtos-shell-tint-100) 100%);
  --maytras-shell-text: var(--gtos-slate-900);
  /* WCAG-AA-001: #64748b kabuk zemini uzerinde 4.43:1 idi (esik 4.5).
   * H5-THEME: #627288 kabuk zeminini gecti ama modul icindeki acik panellerde
   * yetmedi — en zorlu zemin teal tonlu cip arka plani #e2f2f1 uzerinde 4.25.
   * #5d6c80 tum panel zeminlerinde en dusuk 4.64 verir. */
  --maytras-shell-text-muted: #5d6c80;
  --maytras-shell-surface: var(--gtos-white);
  --maytras-shell-surface-muted: rgba(248, 250, 252, 0.92);
  --maytras-shell-border: rgba(148, 163, 184, 0.28);
  --maytras-shell-header-bg: rgba(255, 255, 255, 0.82);
  --maytras-shell-sidebar-bg: linear-gradient(180deg, var(--gtos-slate-900) 0%, var(--gtos-gray-900) 100%);
  --maytras-shell-sidebar-text: var(--gtos-slate-50);
  --maytras-shell-sidebar-muted: var(--gtos-slate-400);
  --maytras-shell-input-bg: var(--gtos-white);
  --maytras-shell-input-text: var(--gtos-slate-900);
  /* WCAG-AA-001: girdi sinirlari bileseni tanimlar, 3:1 gerekir (onceki alpha 1.43:1) */
  --maytras-shell-input-border: #7d8fa9;
  --maytras-shell-gold: var(--gtos-gold-500);
  --maytras-shell-focus: var(--gtos-teal-600);
  --maytras-meta-theme: var(--gtos-slate-50);

  /* --- Color: surfaces --- */
  --gtos-color-bg: var(--gtos-slate-50);
  --gtos-color-surface: var(--gtos-white);
  --gtos-color-surface-elevated: var(--gtos-white);
  /* H5-THEME: yuzeyden bir kademe geri duran alanlar (harita tuvali, ic
   * panel zemini). Kontrast testi bunlari yakalamaz; koyu temada acik
   * kalirlarsa parite kirilir. */
  --gtos-color-surface-muted: #e8f0f8;
  --gtos-color-warning-soft: rgba(245, 158, 11, 0.12);
  /* H5-THEME: rozet zemini icin dolgu tonlari (bkz. warning-soft) */
  --gtos-color-danger-soft: rgba(239, 68, 68, 0.12);
  --gtos-color-partial-soft: rgba(37, 99, 235, 0.12);
  --gtos-color-border: var(--gtos-gray-200);
  --gtos-color-text: var(--maytras-shell-text);
  --gtos-color-text-muted: var(--maytras-shell-text-muted);

  /* --- Color: brand & semantic (PSP-001 §5 — anlam sabittir, dekorasyon değil) ---
   * success/green = Verified · info/blue = Information · warning/amber = Warning
   * danger/red = Critical Risk · ai/indigo = Artificial Intelligence · muted = Inactive
   */
  --gtos-color-primary: var(--gtos-teal-650);
  --gtos-color-primary-strong: var(--gtos-teal-800);
  --gtos-color-info: var(--gtos-teal-500);
  --gtos-color-success: var(--gtos-emerald-500);
  --gtos-color-warning: var(--gtos-amber-500);
  --gtos-color-danger: var(--gtos-red-500);
  --gtos-color-ai: var(--gtos-teal-700);
  --gtos-color-ai-soft: rgba(15, 118, 110, 0.12);
  --gtos-color-risk-low: var(--gtos-emerald-500);
  --gtos-color-risk-med: var(--gtos-amber-500);
  --gtos-color-risk-high: var(--gtos-red-500);

  /* --- WCAG-AA-001 — anlam renklerinin METIN varyantlari ---
   * Yukaridaki tokenlar DOLGU icindir (rozet zemini, nokta, ilerleme cubugu);
   * acik zeminde parlak kalmalari dogrudur. Ayni degerler METIN olarak
   * kullanildiginda beyaz kart uzerinde AA esigini gecmiyordu:
   *   success 2.54 · warning 2.15 · info 2.49 · danger 3.76 (esik 4.5)
   * Metin icin asagidaki koyu varyantlar kullanilir. Ton korunur, yalnizca
   * aciklik dusurulur. Koyu temada zaten AA gecildigi icin varyant = temel.
   */
  --gtos-color-success-text: var(--gtos-emerald-750);
  --gtos-color-warning-text: var(--gtos-amber-750);
  --gtos-color-danger-text: var(--gtos-red-650);
  --gtos-color-info-text: #0e8578;
  --gtos-color-primary-text: var(--gtos-color-primary);
  --gtos-color-ai-text: var(--gtos-color-ai);

  /* --- H5-THEME — birincil zemin uzerindeki yazi rengi ---
   * Birincil renk temaya gore degisiyor (personel temasinda teal, musteri
   * yuzeyinde altin). Buton yazisini her yerde beyaz sabitlemek altin zeminde
   * 2.10:1'e dusuyordu. Bu token birincil rengin YANINDA tanimlanir; birincil
   * degisirse uzerindeki yazi da degisir.
   *   teal  #0c8479 + beyaz    = 4.57
   *   teal  #2dd4bf + koyu     = 10.12
   *   altin #a3844a + koyu     = 4.96
   *   altin #cfaf6b + koyu     = 8.33
   */
  --gtos-color-on-primary: var(--gtos-white);

  /* Altin METIN varyanti: altin acik bir renktir, yazi olarak acik zeminde
   * okunmuyor (#a3844a / beyaz = 3.53). Yazi icin koyu varyant kullanilir. */
  --gtos-color-gold-text: #7d6234;

  /* ===== VERI GORSELLESTIRME (H6-CHARTS) — GTOS-CHART-BEGIN =====
   * Chart.js tuvale cizer; CSS degiskenleri canvas icine kendiliginden
   * ULASMAZ. Bu tokenlar dashboard/js/gtos-chart-theme.js tarafindan
   * getComputedStyle ile okunup Chart.defaults'a beslenir ve tema
   * degisiminde yeniden uygulanir. Grafik rengi tanimlamak isteyen her
   * yer buradan okumalidir; grafik basina renk dizisi uretmek yasak.
   *
   * Kontrast (olculdu, scripts/ux-program/lib/color.js):
   *   acik tema, beyaz kart uzerinde  — text 10.35 · muted 7.58
   *   koyu tema, #0a111f kart uzerinde — text 17.22 · muted 12.71
   * Onceki durum: Chart.js ontanimli #666 koyu temada 3.29 (AA altinda).
   */
  --gtos-chart-text: var(--gtos-slate-700);
  /* Eksen yazisi kucuk punto; govde metninin "muted" tonundan bir kademe
   * koyu tutuldu (slate-600 = 7.58, slate-550 = 5.35). Ikisi de AA gecer,
   * grafik tikleri icin daha okunur olani secildi. */
  --gtos-chart-text-muted: var(--gtos-slate-600);
  --gtos-chart-grid: rgba(148, 163, 184, 0.28);
  --gtos-chart-border: var(--gtos-color-border);
  --gtos-chart-surface: var(--gtos-color-surface);
  --gtos-chart-tooltip-bg: rgba(15, 23, 42, 0.94);
  --gtos-chart-tooltip-text: var(--gtos-slate-50);
  --gtos-chart-tooltip-muted: var(--gtos-slate-300);
  --gtos-chart-tooltip-border: rgba(148, 163, 184, 0.35);

  /* Seri paleti — indeks = renk ailesi, iki temada da AYNI sirada:
   * 1 teal · 2 mavi · 3 amber · 4 kirmizi · 5 mor · 6 yesil · 7 indigo · 8 notr.
   * Grafik ogesi metin degildir; esik 3:1. Olculen en dusuk: acik 3.19
   * (amber-600), koyu 4.22 (indigo-500). */
  --gtos-chart-series-1: var(--gtos-teal-650);
  --gtos-chart-series-2: var(--gtos-blue-600);
  --gtos-chart-series-3: var(--gtos-amber-600);
  --gtos-chart-series-4: var(--gtos-red-600);
  --gtos-chart-series-5: var(--gtos-violet-500);
  --gtos-chart-series-6: var(--gtos-emerald-600);
  --gtos-chart-series-7: var(--gtos-indigo-700);
  --gtos-chart-series-8: var(--gtos-slate-600);

  /* Anlam sabittir (PSP-001 §5): artan yesil · durgun notr · daralan kirmizi */
  --gtos-chart-positive: var(--gtos-emerald-600);
  --gtos-chart-neutral: var(--gtos-slate-500);
  --gtos-chart-negative: var(--gtos-red-600);
  /* ===== GTOS-CHART-END ===== */

  /* --- Typography (Inter + Space Grotesk — index.html font yükleme ile hizalı) --- */
  --gtos-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --gtos-font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --gtos-font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --gtos-text-2xs: 0.625rem;
  --gtos-text-xs: 0.75rem;
  --gtos-text-sm: 0.875rem;
  --gtos-text-md: 1rem;
  --gtos-text-lg: 1.125rem;
  --gtos-text-xl: 1.25rem;
  --gtos-text-display: 1.5rem;
  --gtos-text-compact: 0.8125rem;
  --gtos-text-micro: 0.6875rem;
  --gtos-text-workspace-title: clamp(1.15rem, 1rem + 0.45vw, 1.35rem);
  --gtos-leading: 1.55;
  --gtos-leading-tight: 1.35;
  --gtos-text-primary: var(--maytras-shell-text);
  --gtos-text-muted: var(--maytras-shell-text-muted);

  /* --- Space (4-based) --- */
  --gtos-space-1: 4px;
  --gtos-space-2: 8px;
  --gtos-space-3: 12px;
  --gtos-space-4: 16px;
  --gtos-space-5: 24px;
  --gtos-space-6: 32px;

  /* --- Radius / shadow / motion --- */
  --gtos-radius-sm: 6px;
  --gtos-radius-md: 10px;
  --gtos-radius-lg: 14px;
  --gtos-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --gtos-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --gtos-shadow-enterprise: 0 1px 0 rgba(15, 23, 42, 0.04), 0 12px 32px rgba(15, 23, 42, 0.06);
  --gtos-motion-fast: 120ms;
  --gtos-motion-base: 200ms;
  --gtos-motion-ease: ease;

  /* --- Layout --- */
  --gtos-sidebar-width: 260px;
  --gtos-sidebar-width-collapsed: 72px;
  --gtos-header-height: 64px;
  --gtos-rail-width: 320px;

  /* --- Legacy aliases (non-breaking) --- */
  --background-color: var(--gtos-color-bg);
  --surface-color: var(--gtos-color-surface);
  --text-primary: var(--gtos-color-text);
  --text-secondary: var(--gtos-color-text-muted);
  --border-color: var(--gtos-color-border);
  --primary-color: var(--gtos-color-primary);
  --secondary-color: var(--gtos-color-primary-strong);
  --accent-color: var(--gtos-color-info);
  --success-color: var(--gtos-color-success);
  --warning-color: var(--gtos-color-warning);
  --error-color: var(--gtos-color-danger);
  --shadow: var(--gtos-shadow-sm);
  --shadow-lg: var(--gtos-shadow-md);
  --sidebar-width: var(--gtos-sidebar-width);
  --sidebar-width-collapsed: var(--gtos-sidebar-width-collapsed);
  --title-color: var(--gtos-color-text);

  /* THEME-STANDARD-001 — module workspace semantics (SSOT for theme-standard.css) */
  --surface-0: var(--gtos-color-bg);
  --surface-1: var(--gtos-color-surface);
  --surface-2: var(--gtos-color-surface-elevated);
  --text-primary: var(--gtos-color-text);
  --text-secondary: var(--gtos-color-text-muted);
  --text-muted: var(--gtos-color-text-muted);
  --border: var(--gtos-color-border);
  --accent: var(--gtos-color-primary);
  --on-accent: var(--gtos-white);
  --text-on-gold: var(--gtos-ink-on-gold);
  --gtos-surface-0: var(--surface-0);
  --gtos-surface-1: var(--surface-1);
  --gtos-surface-2: var(--surface-2);
  --gtos-accent: var(--accent);
  --surface-elevated: var(--surface-2);
}

html[data-theme='light'] {
  color-scheme: light;
}

html[data-theme='dark'] {
  color-scheme: dark;

  --maytras-shell-bg: var(--gtos-shell-ink-900);
  --maytras-shell-bg-gradient: radial-gradient(900px 500px at 88% -15%, rgba(45, 212, 191, 0.08), transparent 68%),
    radial-gradient(700px 420px at -10% 10%, rgba(37, 99, 235, 0.1), transparent 64%),
    linear-gradient(180deg, var(--gtos-shell-ink-900) 0%, var(--gtos-gray-900) 100%);
  --maytras-shell-text: var(--gtos-slate-100);
  --maytras-shell-text-muted: var(--gtos-slate-400);
  --maytras-shell-surface: var(--gtos-slate-800);
  --maytras-shell-surface-muted: rgba(30, 41, 59, 0.88);
  --maytras-shell-border: rgba(148, 163, 184, 0.22);
  --maytras-shell-header-bg: rgba(15, 23, 42, 0.82);
  --maytras-shell-sidebar-bg: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.9));
  --maytras-shell-sidebar-text: var(--gtos-slate-50);
  --maytras-shell-sidebar-muted: var(--gtos-slate-400);
  --maytras-shell-input-bg: rgba(15, 23, 42, 0.65);
  --maytras-shell-input-text: var(--gtos-slate-100);
  /* WCAG-AA-001: 0.28 alpha 1.65:1 veriyordu; girdi siniri icin 3:1 gerekli */
  --maytras-shell-input-border: rgba(148, 163, 184, 0.72);
  --maytras-shell-gold: var(--gtos-gold-400);
  --maytras-shell-focus: var(--gtos-teal-400);
  --maytras-meta-theme: var(--gtos-shell-ink-900);

  /* Fable Premium d2030 panel tonları ile hizalı (bkz. gtos-command-center.css) */
  --gtos-color-bg: var(--gtos-shell-ink-950);
  --gtos-color-surface: #0a111f;
  --gtos-color-surface-elevated: #0e1728;
  --gtos-color-surface-muted: #070d18;
  --gtos-color-warning-soft: rgba(251, 191, 36, 0.14);
  --gtos-color-danger-soft: rgba(248, 113, 113, 0.14);
  --gtos-color-partial-soft: rgba(96, 165, 250, 0.16);
  --gtos-color-border: rgba(148, 163, 184, 0.16);
  --gtos-color-text: var(--maytras-shell-text);
  --gtos-color-text-muted: var(--maytras-shell-text-muted);
  --gtos-text-primary: var(--maytras-shell-text);
  --gtos-text-muted: var(--maytras-shell-text-muted);
  --gtos-color-primary: var(--gtos-teal-400);
  --gtos-color-primary-strong: var(--gtos-teal-300);
  --gtos-color-info: var(--gtos-teal-400);
  --gtos-color-success: var(--gtos-emerald-400);
  --gtos-color-warning: var(--gtos-amber-400);
  --gtos-color-danger: var(--gtos-red-400);
  --gtos-color-ai: var(--gtos-teal-400);
  --gtos-color-ai-soft: rgba(45, 212, 191, 0.12);

  /* WCAG-AA-001: koyu temada anlam renkleri kart uzerinde zaten AA gecer
   * (success 9.82 · warning 11.3 · danger 6.82 · info 10.14), bu yuzden
   * metin varyantlari temel degerlere esitlenir. */
  --gtos-color-success-text: var(--gtos-color-success);
  --gtos-color-warning-text: var(--gtos-color-warning);
  --gtos-color-danger-text: var(--gtos-color-danger);
  --gtos-color-info-text: var(--gtos-color-info);
  --gtos-color-primary-text: var(--gtos-color-primary);
  --gtos-color-ai-text: var(--gtos-color-ai);

  /* H5-THEME: koyu temada birincil renk parlak teal; uzerine koyu murekkep. */
  --gtos-color-on-primary: var(--gtos-shell-ink-900);
  --gtos-color-gold-text: var(--gtos-gold-500);

  /* H6-CHARTS — koyu temada grafik metni ve izgarasi.
   * Tik/eksen yazisi icin slate-300 (#0a111f uzerinde 12.71), izgara icin
   * dusuk alfa notr; izgara dekoratiftir, veriyi bastirmamalidir. */
  --gtos-chart-text: var(--gtos-slate-100);
  --gtos-chart-text-muted: var(--gtos-slate-300);
  --gtos-chart-grid: rgba(148, 163, 184, 0.22);
  --gtos-chart-border: var(--gtos-color-border);
  --gtos-chart-surface: var(--gtos-color-surface);
  --gtos-chart-tooltip-bg: rgba(2, 6, 23, 0.96);
  --gtos-chart-tooltip-text: var(--gtos-slate-50);
  --gtos-chart-tooltip-muted: var(--gtos-slate-300);
  --gtos-chart-tooltip-border: rgba(148, 163, 184, 0.3);

  /* Ayni renk aileleri, koyu zeminde okunur tonlari */
  --gtos-chart-series-1: var(--gtos-teal-400);
  --gtos-chart-series-2: var(--gtos-sky-400);
  --gtos-chart-series-3: var(--gtos-amber-400);
  --gtos-chart-series-4: var(--gtos-red-400);
  --gtos-chart-series-5: var(--gtos-purple-500);
  --gtos-chart-series-6: var(--gtos-emerald-400);
  --gtos-chart-series-7: var(--gtos-indigo-500);
  --gtos-chart-series-8: var(--gtos-slate-300);

  --gtos-chart-positive: var(--gtos-emerald-400);
  --gtos-chart-neutral: var(--gtos-slate-400);
  --gtos-chart-negative: var(--gtos-red-400);

  --gtos-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.45);
  --gtos-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);

  /* Legacy unified aliases — dark parity */
  --background-color: var(--gtos-color-bg);
  --surface-color: var(--gtos-color-surface);
  --text-primary: var(--gtos-color-text);
  --text-secondary: var(--gtos-color-text-muted);
  --border-color: var(--gtos-color-border);
  --bg-0: var(--gtos-shell-ink-900);
  --bg-1: var(--gtos-gray-900);
  --glass: rgba(30, 41, 59, 0.82);
  --glass-strong: rgba(30, 41, 59, 0.94);
  --surface-outline: rgba(148, 163, 184, 0.22);
  --title-color: var(--gtos-color-text);

  --on-accent: var(--gtos-shell-ink-900);
  /* WCAG-AA-001: altin (#e8cf88) acik bir zemin; uzerine krem yazi 1.38:1 ile
   * pratikte gorunmuyordu. Acik temadaki gibi koyu yazi kullanilir. */
  --text-on-gold: var(--gtos-ink-on-gold);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --gtos-motion-fast: 0ms;
    --gtos-motion-base: 0ms;
  }
}

/* Utility hooks for new CC / shell work (opt-in classes) */
.gtos-surface {
  background: var(--gtos-color-surface);
  color: var(--gtos-color-text);
  border: 1px solid var(--gtos-color-border);
  border-radius: var(--gtos-radius-md);
}

.gtos-text-muted {
  color: var(--gtos-color-text-muted);
}

.gtos-badge-success {
  color: var(--gtos-color-success-text);
}
.gtos-badge-warning {
  color: var(--gtos-color-warning-text);
}
.gtos-badge-danger {
  color: var(--gtos-color-danger-text);
}
.gtos-badge-ai {
  color: var(--gtos-color-ai-text);
}

/* --- MetricCard golden primitive (UX-001 / W2-1) --- */
.gtos-metric-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--gtos-space-3);
}

.gtos-metric-card {
  display: flex;
  flex-direction: column;
  gap: var(--gtos-space-1);
  padding: var(--gtos-space-3);
  background: var(--gtos-color-surface);
  color: var(--gtos-color-text);
  border: 1px solid var(--gtos-color-border);
  border-radius: var(--gtos-radius-md);
  box-shadow: var(--gtos-shadow-sm);
  min-width: 0;
  text-decoration: none;
}

.gtos-metric-card--link:hover {
  border-color: var(--gtos-color-primary);
}

.gtos-metric-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--gtos-space-2);
}

.gtos-metric-card__ico {
  color: var(--gtos-color-text-muted);
  font-size: var(--gtos-text-sm);
}

.gtos-metric-card__label {
  margin: 0;
  font-size: var(--gtos-text-xs);
  color: var(--gtos-color-text-muted);
  font-weight: 600;
}

.gtos-metric-card__value {
  font-size: var(--gtos-text-xl);
  font-weight: 700;
  line-height: 1.2;
}

.gtos-metric-card__unit {
  margin-left: var(--gtos-space-1);
  font-size: var(--gtos-text-sm);
  font-weight: 600;
  color: var(--gtos-color-text-muted);
}

.gtos-metric-card__delta {
  font-size: var(--gtos-text-xs);
  font-weight: 700;
}

.gtos-metric-card__delta--up {
  color: var(--gtos-color-success);
}
.gtos-metric-card__delta--down {
  color: var(--gtos-color-danger);
}
.gtos-metric-card__delta--flat {
  color: var(--gtos-color-text-muted);
}

.gtos-metric-card--ok .gtos-metric-card__ico {
  color: var(--gtos-color-success);
}
.gtos-metric-card--warn .gtos-metric-card__ico {
  color: var(--gtos-color-warning);
}
.gtos-metric-card--danger .gtos-metric-card__ico {
  color: var(--gtos-color-danger);
}
.gtos-metric-card--ai .gtos-metric-card__ico {
  color: var(--gtos-color-ai-text);
}

.gtos-metric-card__spark {
  width: 100%;
  height: 36px;
  color: var(--gtos-color-primary-text);
  margin-top: var(--gtos-space-1);
}

.gtos-metric-card--loading .gtos-metric-card__skeleton {
  height: 72px;
  border-radius: var(--gtos-radius-sm);
  background: linear-gradient(
    90deg,
    var(--gtos-color-border) 0%,
    var(--gtos-color-surface-elevated) 50%,
    var(--gtos-color-border) 100%
  );
  background-size: 200% 100%;
  animation: gtos-metric-skeleton var(--gtos-motion-base) ease-in-out infinite;
}

.gtos-metric-card__error {
  margin: 0;
  color: var(--gtos-color-danger);
  font-size: var(--gtos-text-sm);
}

.gtos-metric-card__empty {
  margin: 0;
  color: var(--gtos-color-text-muted);
  font-size: var(--gtos-text-lg);
}

@keyframes gtos-metric-skeleton {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gtos-metric-card--loading .gtos-metric-card__skeleton {
    animation: none;
  }
}

/* --- PipelineStepper golden primitive (UX-003 / UX-005) --- */
.gtos-pipeline {
  display: flex;
  flex-direction: column;
  gap: var(--gtos-space-3);
  padding: var(--gtos-space-4);
  background: var(--gtos-color-surface);
  border: 1px solid var(--gtos-color-border);
  border-radius: var(--gtos-radius-md);
  color: var(--gtos-color-text);
}

.gtos-pipeline__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--gtos-space-3);
}

.gtos-pipeline__title {
  margin: 0;
  font-size: var(--gtos-text-sm);
  font-weight: 700;
}

.gtos-pipeline__id {
  margin: var(--gtos-space-1) 0 0;
  font-family: var(--gtos-font-mono);
  font-size: var(--gtos-text-xs);
  color: var(--gtos-color-text-muted);
}

.gtos-pipeline__owner {
  font-size: var(--gtos-text-xs);
  color: var(--gtos-color-text-muted);
}

.gtos-pipeline__progress {
  height: 6px;
  background: var(--gtos-color-border);
  border-radius: 999px;
  overflow: hidden;
}

.gtos-pipeline__progress-bar {
  display: block;
  height: 100%;
  background: var(--gtos-color-primary);
  border-radius: 999px;
}

.gtos-pipeline__stages {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gtos-space-2);
}

.gtos-pipeline__stage {
  display: inline-flex;
  align-items: center;
  gap: var(--gtos-space-2);
  padding: var(--gtos-space-2) var(--gtos-space-3);
  border-radius: var(--gtos-radius-sm);
  border: 1px solid var(--gtos-color-border);
  background: var(--gtos-color-bg);
  text-decoration: none;
  color: inherit;
  font-size: var(--gtos-text-xs);
}

.gtos-pipeline__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gtos-color-text-muted);
}

.gtos-pipeline__stage--pass .gtos-pipeline__dot {
  background: var(--gtos-color-success);
}
.gtos-pipeline__stage--warn .gtos-pipeline__dot {
  background: var(--gtos-color-warning);
}
.gtos-pipeline__stage--wait .gtos-pipeline__dot {
  background: var(--gtos-color-info);
}
.gtos-pipeline__stage--fail .gtos-pipeline__dot {
  background: var(--gtos-color-danger);
}
.gtos-pipeline__stage--skip {
  opacity: 0.55;
}

.gtos-pipeline__stage-status {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.gtos-pipeline__stage--pass .gtos-pipeline__stage-status {
  color: var(--gtos-color-success);
}
.gtos-pipeline__stage--warn .gtos-pipeline__stage-status {
  color: var(--gtos-color-warning);
}
.gtos-pipeline__stage--fail .gtos-pipeline__stage-status {
  color: var(--gtos-color-danger);
}

.gtos-pipeline--loading .gtos-pipeline__skeleton {
  height: 96px;
  border-radius: var(--gtos-radius-sm);
  background: var(--gtos-color-border);
}

.gtos-pipeline__error {
  margin: 0;
  color: var(--gtos-color-danger);
}

.gtos-pipeline__empty-title {
  margin: 0;
  font-weight: 700;
}

.gtos-pipeline__empty-hint {
  margin: var(--gtos-space-2) 0 0;
  color: var(--gtos-color-text-muted);
  font-size: var(--gtos-text-sm);
}