/* ==========================================================================
   BASE — tasarım değişkenleri, reset, tipografi, yardımcı sınıflar
   ========================================================================== */

@view-transition { navigation: auto; }

:root {
  /* Renkler — açık tema */
  /* Kâğıt zemin + tek güven rengi (Velsa'nın şarap kırmızısı yerine sağlık yeşili) */
  --paper: #F3F1EC;
  --paper-2: #E9E6DE;
  --paper-3: #DCD8CD;
  --ink: #18201F;
  --ink-2: #47504D;
  --ink-3: #78807C;
  --accent: #1F5E5B;
  --accent-2: #2B7570;
  --sage: #5E7A6C;
  --gold: #B07A62;
  --line: rgba(24, 32, 31, .14);
  --line-strong: rgba(24, 32, 31, .32);
  --on-image: #F3F1EC;
  --deep: #142321;
  --on-deep: #EEF0EA;
  --shadow: 0 30px 60px -30px rgba(20, 35, 33, .35);
  --grain-opacity: .06;

  /* Tipografi */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;

  --fs-mega: clamp(4rem, 15vw, 15rem);
  --fs-hero: clamp(3.25rem, 9.5vw, 9.5rem);
  --fs-h1: clamp(2.5rem, 6vw, 5.5rem);
  --fs-h2: clamp(2rem, 4.2vw, 3.75rem);
  --fs-h3: clamp(1.3rem, 1.1rem + .9vw, 1.75rem);
  --fs-lead: clamp(1.2rem, 1rem + 1vw, 1.75rem);
  --fs-body: clamp(1rem, .96rem + .2vw, 1.125rem);
  --fs-small: .8125rem;
  --fs-micro: .6875rem;

  /* Ölçüler */
  --gutter: clamp(16px, 4vw, 56px);
  --maxw: 1480px;
  --header-h: 76px;
  --radius: 4px;
  --section-space: clamp(40px, 4.2vw, 60px);

  /* Hareket */
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-in-out: cubic-bezier(.76, 0, .24, 1);
  --dur: .6s;

  color-scheme: light;
}

/* Koyu tema: sistem tercihi */
@media (prefers-color-scheme: dark) and (min-width: 768px) {
  :root:not([data-theme="light"]) {
    --paper: #111917;
    --paper-2: #18221F;
    --paper-3: #22302C;
    --ink: #E9ECE6;
    --ink-2: #BAC3BE;
    --ink-3: #8A958F;
    --accent: #86C8BB;
    --accent-2: #A3D8CD;
    --sage: #A3BCAE;
    --gold: #E0B29E;
    --line: rgba(233, 236, 230, .13);
    --line-strong: rgba(233, 236, 230, .3);
    --shadow: 0 30px 60px -30px rgba(0, 0, 0, .7);
    --deep: #0B1311;
    --on-deep: #E9ECE6;
    --grain-opacity: .05;
    color-scheme: dark;
  }
}

/* Koyu tema: elle seçim */
:root[data-theme="dark"] {
  --paper: #111917;
  --paper-2: #18221F;
  --paper-3: #22302C;
  --ink: #E9ECE6;
  --ink-2: #BAC3BE;
  --ink-3: #8A958F;
  --accent: #86C8BB;
  --accent-2: #A3D8CD;
  --sage: #A3BCAE;
  --gold: #E0B29E;
  --line: rgba(233, 236, 230, .13);
  --line-strong: rgba(233, 236, 230, .3);
  --shadow: 0 30px 60px -30px rgba(0, 0, 0, .7);
  --deep: #0B1311;
  --on-deep: #E9ECE6;
  --grain-opacity: .05;
  color-scheme: dark;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 24px); }
html:not(.lenis) { scroll-behavior: smooth; }
body {
  min-height: 100dvh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  transition: background-color .5s var(--ease-out), color .5s var(--ease-out);
}
img, picture, video, svg { display: block; max-width: 100%; }
img { height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
:where(ul[role="list"], ol[role="list"]) { list-style: none; padding: 0; }
h1, h2, h3, h4 { font-weight: inherit; text-wrap: balance; }
p { text-wrap: pretty; }
::selection { background: var(--accent); color: var(--paper); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Kâğıt dokusu */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Tipografi ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 350;
  font-variation-settings: "opsz" 144, "SOFT" 50, "WONK" 0;
  line-height: .95;
  letter-spacing: -.025em;
}
.display em, .display i {
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 100, "WONK" 1;
  color: var(--accent);
}
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 450;
  font-variation-settings: "opsz" 36;
  line-height: 1.2;
  letter-spacing: -.01em;
}
.lead {
  font-family: var(--font-display);
  font-size: var(--fs-lead);
  font-weight: 350;
  font-variation-settings: "opsz" 48;
  line-height: 1.4;
  color: var(--ink-2);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow--dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.meta {
  font-size: var(--fs-small);
  color: var(--ink-3);
  letter-spacing: .02em;
}

/* ---------- Yardımcılar ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-space); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.skip-link {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 10000;
  padding: .7em 1.2em;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-200%);
  transition: transform .3s var(--ease-out);
}
.skip-link:focus { transform: none; }
.rule { height: 1px; background: var(--line); border: 0; }

/* SplitText satır maskesi */
.line-mask { overflow: clip; padding-bottom: .06em; margin-bottom: -.06em; }

/* JS animasyonu yüklenene kadar gizlenecek öğeler (FOUC önleme) */
.js [data-split],
.js [data-fade] { visibility: hidden; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js [data-split],
  .js [data-fade] { visibility: visible; }
}

/* ==========================================================================
   Kaydırma çubukları — ince, yuvarlak, temaya uyumlu
   Tutamaç rengi bulunduğu alanın yazı renginden türetilir: açık / koyu tema,
   koyu menü ve koyu bölümlerde kendiliğinden uyum sağlar.
   ========================================================================== */
/* Firefox */
@supports (-moz-appearance: none) {
  * { scrollbar-width: thin; scrollbar-color: color-mix(in srgb, currentColor 28%, transparent) transparent; }
  html { scrollbar-color: color-mix(in srgb, var(--ink) 26%, var(--paper)) var(--paper); }
  html.menu-open { scrollbar-color: color-mix(in srgb, var(--on-deep) 28%, var(--deep)) var(--deep); }
}
/* Chrome, Edge, Safari, Opera */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track, ::-webkit-scrollbar-corner { background: transparent; }
::-webkit-scrollbar-thumb {
  min-height: 48px;
  border: 3px solid transparent;
  border-radius: 99px;
  background-color: color-mix(in srgb, currentColor 26%, transparent);
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background-color: color-mix(in srgb, currentColor 46%, transparent); }
::-webkit-scrollbar-thumb:active { background-color: var(--accent); }
::-webkit-scrollbar-button { display: none; width: 0; height: 0; }
/* Sayfanın kendi çubuğu (Chrome bunu body'den, diğerleri html'den okur): kâğıt zemin üstünde, üzerine gelince marka yeşili */
html::-webkit-scrollbar, body::-webkit-scrollbar { width: 12px; }
html::-webkit-scrollbar-track, body::-webkit-scrollbar-track { background: var(--paper); }
html::-webkit-scrollbar-thumb, body::-webkit-scrollbar-thumb { background-color: color-mix(in srgb, var(--ink) 24%, transparent); border-width: 3px; }
html::-webkit-scrollbar-thumb:hover, body::-webkit-scrollbar-thumb:hover,
html::-webkit-scrollbar-thumb:active, body::-webkit-scrollbar-thumb:active { background-color: var(--accent); }
/* Tam ekran menü açıkken çubuk koyu zemine karışır */
html.menu-open::-webkit-scrollbar-track, html.menu-open body::-webkit-scrollbar-track { background: var(--deep); }
html.menu-open::-webkit-scrollbar-thumb, html.menu-open body::-webkit-scrollbar-thumb { background-color: color-mix(in srgb, var(--on-deep) 22%, transparent); }