/* ══════════════════════════════════════════════════════════════
   KAYA & TAŞKIN HUKUK — TASARIM SİSTEMİ
   Marka: altın (#C9A227) · antrasit (#0E1013) · fildişi (#F2EFE9)
   ══════════════════════════════════════════════════════════════ */

/* ── 1. TOKENLER ───────────────────────────────────────────── */
:root {
  /* Yüzeyler — logodaki antrasitten türetildi */
  --ink-950: #06080A;
  --ink-900: #0A0C0E;
  --ink-850: #0E1013;
  --ink-800: #14171B;
  --ink-700: #1C2026;
  --ink-600: #262B33;
  --ink-500: #333942;

  /* Altın — logodaki gradyandan örneklendi */
  --gold-300: #F0DCA0;
  --gold-400: #E8C86A;
  --gold-500: #C9A227;
  --gold-600: #A8851C;
  --gold-700: #7D6314;

  /* Metin */
  --ivory: #F4F1EA;
  --ivory-dim: #C8C4BC;
  --muted: #8D939C;
  --muted-dim: #656B74;

  /* Çizgi & cam */
  --line: rgba(201, 162, 39, 0.16);
  --line-soft: rgba(244, 241, 234, 0.08);
  --line-strong: rgba(201, 162, 39, 0.38);
  --glass: rgba(20, 23, 27, 0.62);

  /* Altın gradyan — logo ile birebir */
  --grad-gold: linear-gradient(135deg, #7D6314 0%, #C9A227 22%, #F0DCA0 48%, #C9A227 74%, #8A6E17 100%);
  --grad-gold-soft: linear-gradient(135deg, #C9A227 0%, #E8C86A 50%, #A8851C 100%);

  /* Tipografi */
  --f-display: "Cinzel", "Times New Roman", serif;
  --f-serif: "Cormorant Garamond", Georgia, serif;
  --f-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Akışkan tip ölçeği */
  --t-xs: 0.75rem;
  --t-sm: 0.875rem;
  --t-base: 1rem;
  --t-lg: clamp(1.05rem, 0.98rem + 0.35vw, 1.25rem);
  --t-xl: clamp(1.3rem, 1.15rem + 0.75vw, 1.75rem);
  --t-2xl: clamp(1.75rem, 1.4rem + 1.6vw, 2.75rem);
  --t-3xl: clamp(2.25rem, 1.6rem + 2.9vw, 4rem);
  --t-4xl: clamp(2.75rem, 1.7rem + 4.6vw, 5.75rem);

  /* Boşluk — 8pt ızgara */
  --s-1: 0.5rem;  --s-2: 1rem;   --s-3: 1.5rem;  --s-4: 2rem;
  --s-5: 3rem;    --s-6: 4rem;   --s-7: 6rem;    --s-8: 8rem;
  --s-9: 11rem;

  /* Kap */
  --wide: 1360px;
  --container: 1200px;
  --content: 880px;
  --gutter: clamp(1.25rem, 5vw, 4rem);

  /* Hareket */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
  --dur: 0.6s;

  /* Yükseklik */
  --sh-md: 0 8px 30px rgba(0, 0, 0, 0.45);
  --sh-lg: 0 24px 70px rgba(0, 0, 0, 0.6);
  --sh-gold: 0 12px 48px rgba(201, 162, 39, 0.18);

  --radius: 2px; /* kurumsal: neredeyse keskin köşe */
}

/* ── 2. RESET ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scrollbar-color: var(--gold-700) var(--ink-900);
}

body {
  font-family: var(--f-sans);
  font-size: var(--t-base);
  font-weight: 400;
  line-height: 1.7;
  color: var(--ivory-dim);
  background: var(--ink-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  font-feature-settings: "kern" 1, "liga" 1;
}

img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; padding: 0; }

::selection { background: var(--gold-500); color: var(--ink-950); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--ink-950); }
::-webkit-scrollbar-thumb { background: var(--gold-700); }
::-webkit-scrollbar-thumb:hover { background: var(--gold-500); }

:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
}

/* ── 3. TİPOGRAFİ ──────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--f-serif);
  font-weight: 400;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--ivory);
  text-wrap: balance;
}

h1 { font-size: var(--t-4xl); }
h2 { font-size: var(--t-3xl); }
h3 { font-size: var(--t-xl); }
h4 { font-size: var(--t-lg); }

p { text-wrap: pretty; }

/* Bölüm etiketi — logodaki kapitallerle aynı ses */
.eyebrow {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold-500);
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}
.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--grad-gold-soft);
}
.eyebrow--center { justify-content: center; }
.eyebrow--center::after {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--grad-gold-soft);
}

.lead {
  font-size: var(--t-lg);
  line-height: 1.75;
  color: var(--ivory-dim);
  font-weight: 300;
}

.gold-text {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.serif-italic {
  font-family: var(--f-serif);
  font-style: italic;
  font-weight: 300;
}

/* ── 4. YERLEŞİM ───────────────────────────────────────────── */
.container { width: min(100% - var(--gutter) * 2, var(--container)); margin-inline: auto; }
.container--wide { width: min(100% - var(--gutter) * 2, var(--wide)); margin-inline: auto; }
.container--narrow { width: min(100% - var(--gutter) * 2, var(--content)); margin-inline: auto; }

.section { padding-block: clamp(4.5rem, 9vw, 9rem); position: relative; }
.section--tight { padding-block: clamp(3rem, 6vw, 5.5rem); }

.section-head { margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-head--center { text-align: center; }
.section-head h2 { margin-top: var(--s-3); }
.section-head .lead { margin-top: var(--s-3); max-width: 62ch; }
.section-head--center .lead { margin-inline: auto; }

/* Kolon sayısı açık kırılımlarla sabitlenir — auto-fit'in kolon sayısını
   tarayıcıya bırakması 8'li/4'lü setlerde dengesiz satırlar üretiyordu. */
.grid { display: grid; gap: clamp(1.25rem, 2.5vw, 2rem); grid-template-columns: 1fr; }

@media (min-width: 560px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1040px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Altın hat ayracı */
.rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 50%, transparent);
  border: 0;
}

/* ── 5. DÜĞMELER ───────────────────────────────────────────── */
.btn {
  --btn-pad-y: 1.05rem;
  --btn-pad-x: 2.2rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  font-family: var(--f-display);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: color 0.45s var(--ease), background 0.45s var(--ease),
              border-color 0.45s var(--ease), transform 0.45s var(--ease),
              box-shadow 0.45s var(--ease);
  overflow: hidden;
  isolation: isolate;
  white-space: nowrap;
}

.btn svg { width: 15px; height: 15px; transition: transform 0.45s var(--ease); }
.btn:hover svg { transform: translateX(4px); }

/* Birincil — dolu altın */
.btn--gold {
  background: var(--grad-gold);
  color: var(--ink-950);
  border: 1px solid transparent;
  box-shadow: var(--sh-gold);
}
.btn--gold::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #F0DCA0, #FFF2CC 50%, #E8C86A);
  opacity: 0;
  transition: opacity 0.45s var(--ease);
  z-index: -1;
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 54px rgba(201,162,39,.32); }
.btn--gold:hover::after { opacity: 1; }

/* İkincil — hatlı */
.btn--ghost {
  border: 1px solid var(--line-strong);
  color: var(--gold-400);
  background: transparent;
}
.btn--ghost::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
  z-index: -1;
}
.btn--ghost:hover { color: var(--ink-950); border-color: transparent; }
.btn--ghost:hover::after { transform: scaleX(1); }

/* Metin bağlantısı */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--f-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-500);
  transition: color 0.35s var(--ease), gap 0.35s var(--ease);
}
.link-arrow:hover { color: var(--gold-300); gap: 1rem; }
.link-arrow svg { width: 14px; height: 14px; }

/* ── 6. 3B KART SİSTEMİ ────────────────────────────────────── */
/* Gerçek perspektif — CSS 3D transform, sahte gölge değil */
.tilt-scene { perspective: 1400px; }

.card {
  position: relative;
  background: linear-gradient(160deg, var(--ink-800) 0%, var(--ink-850) 60%, var(--ink-900) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform 0.7s var(--ease), border-color 0.6s var(--ease),
              box-shadow 0.7s var(--ease);
  will-change: transform;
}

/* Üstten geçen altın parıltı */
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-500) 50%, transparent);
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}

/* İmleci takip eden ışık — JS --mx/--my besler */
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    460px circle at var(--mx, 50%) var(--my, 50%),
    rgba(201, 162, 39, 0.11),
    transparent 62%
  );
  opacity: 0;
  transition: opacity 0.6s var(--ease);
  pointer-events: none;
}

.card:hover {
  border-color: var(--line);
  box-shadow: var(--sh-lg);
}
.card:hover::before, .card:hover::after { opacity: 1; }

.card__body { padding: clamp(1.75rem, 3vw, 2.5rem); position: relative; z-index: 2; }

/* 3B katman derinliği — içerik karttan "kalkar" */
.card__layer { transform: translateZ(30px); }
.card__layer--deep { transform: translateZ(55px); }

/* ── 7. AÇILIŞ ANİMASYONLARI ───────────────────────────────── */
/* İLERLEMELİ GELİŞTİRME: gizleme yalnızca .js varken uygulanır.
   JS yüklenmezse/hata verirse içerik olduğu gibi görünür kalır —
   arama motorları ve JS'siz tarayıcılar için kritik. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

.js [data-reveal="fade"] { transform: none; }
.js [data-reveal="left"]  { transform: translateX(-32px); }
.js [data-reveal="right"] { transform: translateX(32px); }
.js [data-reveal="scale"] { transform: scale(0.94); }

/* Sıralı gecikme */
[data-delay="1"] { transition-delay: 0.08s; }
[data-delay="2"] { transition-delay: 0.16s; }
[data-delay="3"] { transition-delay: 0.24s; }
[data-delay="4"] { transition-delay: 0.32s; }
[data-delay="5"] { transition-delay: 0.4s; }
[data-delay="6"] { transition-delay: 0.48s; }
[data-delay="7"] { transition-delay: 0.56s; }
[data-delay="8"] { transition-delay: 0.64s; }

/* Satır satır açılan başlık — aynı .js koruması */
.line-mask { display: block; overflow: hidden; }
.js .line-mask > span {
  display: block;
  transform: translateY(105%);
  transition: transform 1.05s var(--ease);
}
.is-in .line-mask > span,
.line-mask.is-in > span { transform: none; }

/* ── 8. YARDIMCILAR ────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; top: -100px; left: var(--gutter);
  z-index: 999; padding: 0.9rem 1.6rem;
  background: var(--gold-500); color: var(--ink-950);
  font-weight: 600; transition: top 0.3s var(--ease);
}
.skip-link:focus { top: 1rem; }

.noise {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── 9. ERİŞİLEBİLİRLİK: HAREKET AZALTMA ───────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .line-mask > span { transform: none !important; }
}