/* ==========================================================================
   İMAYDER — Temel Katman (reset + tipografi + yardımcılar)
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

@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;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  overflow-x: hidden;
  min-height: 100vh;
}

body.is-locked { overflow: hidden; }

img, svg, video, canvas, picture {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select { font: inherit; color: inherit; }

button { cursor: pointer; background: none; border: none; padding: 0; }

a { color: var(--link); text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
a:hover { color: var(--brand-800); }

ul, ol { padding: 0; list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--heading);
  line-height: var(--lh-tight);
  letter-spacing: -0.012em;
  text-wrap: balance;
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }
h5 { font-size: var(--fs-lg); }
h6 { font-size: var(--fs-md); }

p { text-wrap: pretty; }

hr { border: 0; border-top: 1px solid var(--border-soft); }

::selection { background: var(--brand-200); color: var(--brand-900); }

:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

/* Kaydırma çubuğu */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb {
  background: var(--ink-300);
  border-radius: var(--r-pill);
  border: 3px solid var(--bg-alt);
}
::-webkit-scrollbar-thumb:hover { background: var(--brand-400); }

/* --------------------------------------------------------------------------
   Yerleşim yardımcıları
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--wide { max-width: var(--container-wide); }
.container--text { max-width: var(--container-text); }

.section { padding-block: clamp(3.5rem, 7vw, 6.5rem); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.section--alt { background: var(--bg-alt); }
.section--warm { background: var(--paper-warm); }
.section--deep {
  background: linear-gradient(160deg, var(--brand-900) 0%, var(--brand-700) 58%, var(--brand-800) 100%);
  color: var(--brand-100);
}
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: #fff; }

.stack > * + * { margin-top: var(--flow, 1rem); }

.grid { display: grid; gap: var(--gap, 1.75rem); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fill, minmax(var(--min, 280px), 1fr)); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.wrap { flex-wrap: wrap; }

.text-center { text-align: center; }
.text-right { text-align: right; }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.small { font-size: var(--fs-sm); }
.tiny { font-size: var(--fs-xs); }
.strong { font-weight: 600; }
.uppercase { text-transform: uppercase; letter-spacing: 0.09em; }
.serif { font-family: var(--font-display); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

.w-full { width: 100%; }
.relative { position: relative; }
.hidden { display: none !important; }

.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(--space-4);
  z-index: var(--z-toast);
  background: var(--brand-700);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--r-md) var(--r-md);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 0; color: #fff; }

.line-clamp-1, .line-clamp-2, .line-clamp-3, .line-clamp-4 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.line-clamp-1 { -webkit-line-clamp: 1; }
.line-clamp-2 { -webkit-line-clamp: 2; }
.line-clamp-3 { -webkit-line-clamp: 3; }
.line-clamp-4 { -webkit-line-clamp: 4; }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .section { padding-block: 3rem; }
}