/*
  Visual Identity:
  Palette: #28 — Earthy Industrial + Cerulean Spark (8 colors)
  Typography: Slab + Mono (Rokkitt + JetBrains Mono)
  Spatial: Asymmetric Tension
  Texture: Flat & Solid
  Animation: Interaction-Only
*/

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Rokkitt:wght@600;700;800&display=swap');

@layer reset, base, layout, components, animations, utilities;

/* ================================================
   RESET
   ================================================ */
@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
    hanging-punctuation: first last;
  }

  body {
    min-block-size: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  :is(img, picture, video, canvas, svg) {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

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

  :is(h1, h2, h3, h4, h5, h6) {
    overflow-wrap: break-word;
    text-wrap: balance;
  }

  p {
    overflow-wrap: break-word;
    text-wrap: pretty;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul, ol {
    list-style: none;
  }

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

  fieldset {
    border: none;
  }

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

/* ================================================
   BASE — Custom Properties + Typography
   ================================================ */
@layer base {
  :root {
    /* === Colors — 8 from dice.json palette === */
    --color-dark: #0B0B0B;
    --color-steel: #545453;
    --color-depth: #662321;
    --color-earth: #C0A270;
    --color-sand: #E4CFBB;
    --color-warm: #EA955D;
    --color-flame: #DC5E3F;
    --color-accent: #129BCF;

    /* === Derived UI colors === */
    --color-bg: var(--color-sand);
    --color-text: var(--color-dark);
    --color-text-muted: var(--color-steel);
    --color-surface: #F5EDE3;
    --color-border: var(--color-earth);

    /* === Typography === */
    --font-display: 'Rokkitt', 'Georgia', serif;
    --font-body: 'JetBrains Mono', 'Courier New', monospace;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --size-display: clamp(2.75rem, 5.5vw, 4.5rem);
    --size-h1: clamp(2.25rem, 4.5vw, 3.75rem);
    --size-h2: clamp(1.6rem, 3vw, 2.5rem);
    --size-h3: clamp(1.05rem, 1.4vw, 1.3rem);
    --size-body: clamp(0.85rem, 0.95vw, 0.95rem);
    --size-small: clamp(0.72rem, 0.8vw, 0.82rem);
    --size-label: clamp(0.7rem, 0.75vw, 0.78rem);

    --leading-tight: 1.0;
    --leading-body: 1.65;
    --leading-relaxed: 1.8;

    --tracking-tight: -0.03em;
    --tracking-normal: 0;
    --tracking-wide: 0.06em;
    --tracking-mono: 0.04em;

    /* === Spacing — Asymmetric tension base === */
    --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
    --space-sm: clamp(0.5rem, 1vw, 0.75rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(1.75rem, 3.5vw, 2.75rem);
    --space-xl: clamp(3rem, 5.5vw, 4.5rem);
    --space-2xl: clamp(5rem, 9vw, 8rem);

    --gutter: clamp(1.25rem, 3vw, 2rem);
    --container-max: 72rem;
    --container-narrow: 58rem;

    /* === Z-index stack === */
    --z-base: 1;
    --z-stack: 10;
    --z-header: 100;
    --z-backdrop: 200;
    --z-mobile-nav: 300;
    --z-nav-toggle: 400;
    --z-cookie: 500;

    /* === Animation — Interaction-Only === */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 600ms;
    --duration-dramatic: 1000ms;

    /* === Borders — Flat & Solid defines edges via borders === */
    --border-thin: 1px solid var(--color-border);
    --border-medium: 2px solid var(--color-border);
    --border-thick: 4px solid var(--color-dark);
  }

  /* --- Dark mode --- */
  @media (prefers-color-scheme: dark) {
    :root {
      --color-bg: var(--color-dark);
      --color-text: var(--color-sand);
      --color-text-muted: var(--color-earth);
      --color-surface: #1a1a19;
      --color-border: var(--color-steel);
    }
  }

  body {
    font-family: var(--font-body);
    font-size: var(--size-body);
    line-height: var(--leading-body);
    letter-spacing: var(--tracking-mono);
    color: var(--color-text);
    background-color: var(--color-bg);
  }

  /* --- Headings — Slab serif --- */
  :is(h1, h2, h3, h4, h5, h6) {
    font-family: var(--font-display);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-dark);
    font-weight: 700;
  }

  @media (prefers-color-scheme: dark) {
    :is(h1, h2, h3, h4, h5, h6) {
      color: var(--color-sand);
    }
  }

  h1 { font-size: var(--size-h1); font-weight: 800; }
  h2 { font-size: var(--size-h2); }
  h3 { font-size: var(--size-h3); font-weight: 600; }

  p {
    max-inline-size: 65ch;
  }

  strong {
    font-weight: 700;
  }

  /* --- Links base --- */
  a:not([class]) {
    color: var(--color-accent);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    text-decoration-line: underline;
  }

  /* --- Selection --- */
  ::selection {
    background-color: var(--color-accent);
    color: var(--color-sand);
  }

  /* --- Scrollbar --- */
  ::-webkit-scrollbar {
    inline-size: 8px;
  }
  ::-webkit-scrollbar-track {
    background: var(--color-bg);
  }
  ::-webkit-scrollbar-thumb {
    background: var(--color-steel);
  }
}

/* ================================================
   LAYOUT
   ================================================ */
@layer layout {
  .section-icerik {
    max-inline-size: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
  }

  /* --- Stack card overlap base --- */
  .stack-card {
    position: relative;
    z-index: var(--z-stack);
  }

  .stack-card[data-stack="contained"] .section-icerik {
    max-inline-size: var(--container-narrow);
    margin-inline-start: auto;
    margin-inline-end: clamp(2rem, 8vw, 10rem);
  }

  .stack-card[data-stack="full"] .section-icerik {
    max-inline-size: var(--container-max);
    margin-inline-start: clamp(2rem, 6vw, 8rem);
    margin-inline-end: auto;
  }
}

/* ================================================
   COMPONENTS
   ================================================ */
@layer components {

  /* === Skip Link === */
  .atla-link {
    position: fixed;
    inset-block-start: -100%;
    inset-inline-start: var(--gutter);
    z-index: 9999;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: var(--size-small);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-sand);
    background-color: var(--color-dark);
    border-block-end: 3px solid var(--color-accent);
  }

  .atla-link:focus {
    inset-block-start: var(--space-sm);
  }

  /* === Read Progress Bar === */
  .okuma-ilerleme {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    block-size: 3px;
    z-index: calc(var(--z-header) + 1);
    background-color: transparent;
  }

  .ilerleme-cubuk {
    block-size: 100%;
    inline-size: 0%;
    background-color: var(--color-accent);
    will-change: inline-size;
  }

  /* === HEADER === */
  .site-header {
    position: fixed;
    inset-block-start: 3px;
    inset-inline: 0;
    z-index: var(--z-header);
    background-color: var(--color-dark);
    border-block-end: 2px solid var(--color-steel);
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--duration-slow) var(--ease-out),
                opacity var(--duration-slow) var(--ease-out);
  }

  .site-header.is-visible {
    transform: translateY(0);
    opacity: 1;
  }

  .header-icerik {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-inline-size: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
    padding-block: var(--space-sm);
  }

  .logo {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2vw, 1.6rem);
    font-weight: 800;
    letter-spacing: var(--tracking-tight);
    color: var(--color-sand);
    text-decoration: none;
    flex-shrink: 0;
  }

  .desktop-nav {
    margin-inline-start: auto;
  }

  .desktop-nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .desktop-nav a {
    font-family: var(--font-body);
    font-size: var(--size-small);
    font-weight: 500;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-earth);
    text-decoration: none;
    padding-block: var(--space-xs);
    position: relative;
  }

  .desktop-nav a::after {
    content: '';
    position: absolute;
    inset-block-end: 0;
    inset-inline-start: 0;
    inline-size: 0;
    block-size: 2px;
    background-color: var(--color-accent);
    transition: inline-size var(--duration-normal) var(--ease-out);
  }

  .desktop-nav a:hover::after,
  .desktop-nav a:focus-visible::after {
    inline-size: 100%;
  }

  .desktop-nav a:hover,
  .desktop-nav a:focus-visible {
    color: var(--color-sand);
  }

  .header-cta {
    font-family: var(--font-body);
    font-size: var(--size-label);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-dark);
    background-color: var(--color-accent);
    padding: var(--space-xs) var(--space-md);
    border: 2px solid var(--color-accent);
    text-decoration: none;
    flex-shrink: 0;
    transition: background-color var(--duration-normal) var(--ease-smooth),
                color var(--duration-normal) var(--ease-smooth);
  }

  .header-cta:hover,
  .header-cta:focus-visible {
    background-color: transparent;
    color: var(--color-accent);
  }

  /* === NAV TOGGLE (Burger #7 — X Slide, elastic bounce) === */
  .nav-toggle {
    display: none;
    position: relative;
    z-index: var(--z-nav-toggle);
    inline-size: 44px;
    block-size: 44px;
    flex-shrink: 0;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-toggle span {
    position: absolute;
    inline-size: 24px;
    block-size: 2px;
    inset-inline-start: 10px;
    background: var(--color-sand);
    border-radius: 2px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
  }

  .nav-toggle span:nth-child(1) { inset-block-start: 12px; }
  .nav-toggle span:nth-child(2) { inset-block-start: 50%; transform: translateY(-50%); }
  .nav-toggle span:nth-child(3) { inset-block-end: 12px; }

  /* Burger open state — X Slide animation */
  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    inset-block-start: 50%;
    transform: translateY(-50%) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: translateY(-50%) scale(0);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    inset-block-end: 50%;
    transform: translateY(50%) rotate(-45deg);
  }

  /* === NAV BACKDROP === */
  .nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: var(--z-backdrop);
    background-color: var(--color-dark);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-slow) var(--ease-smooth),
                visibility var(--duration-slow) var(--ease-smooth);
  }

  .nav-backdrop.is-visible {
    opacity: 0.7;
    visibility: visible;
  }

  /* === MOBILE NAV === */
  .mobile-nav {
    position: fixed;
    inset-block-start: 0;
    inset-inline-end: 0;
    z-index: var(--z-mobile-nav);
    inline-size: min(80vw, 320px);
    block-size: 100dvh;
    background-color: var(--color-dark);
    border-inline-start: 3px solid var(--color-accent);
    padding-block-start: calc(var(--space-2xl) + var(--space-lg));
    padding-inline: var(--space-lg);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--duration-slow) var(--ease-out),
                visibility var(--duration-slow) var(--ease-out);
    overflow-y: auto;
  }

  .mobile-nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  .mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .mobile-nav a {
    display: block;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-earth);
    padding: 14px 16px;
    border-inline-start: 3px solid transparent;
    text-decoration: none;
    transition: border-color var(--duration-normal) var(--ease-smooth),
                color var(--duration-normal) var(--ease-smooth);
  }

  .mobile-nav a:hover,
  .mobile-nav a:focus-visible {
    border-inline-start-color: var(--color-accent);
    color: var(--color-sand);
  }

  .mobil-cta {
    margin-block-start: var(--space-md);
    background-color: var(--color-accent);
    color: var(--color-dark) !important;
    font-weight: 700 !important;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    text-align: center;
    border-inline-start: none !important;
  }

  /* === BUTTONS === */
  .btn-birincil {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--size-small);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    text-decoration: none;
    color: var(--color-dark);
    background-color: var(--color-accent);
    padding: var(--space-sm) var(--space-lg);
    border: 2px solid var(--color-accent);
    cursor: pointer;
    transition: background-color var(--duration-normal) var(--ease-smooth),
                color var(--duration-normal) var(--ease-smooth),
                transform var(--duration-fast) var(--ease-bounce);
  }

  .btn-birincil:hover,
  .btn-birincil:focus-visible {
    background-color: transparent;
    color: var(--color-accent);
  }

  .btn-birincil:active {
    transform: scale(0.97);
  }

  .btn-ikincil {
    display: inline-block;
    font-family: var(--font-body);
    font-size: var(--size-small);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    text-decoration: none;
    color: var(--color-accent);
    background-color: transparent;
    padding: var(--space-sm) var(--space-lg);
    border: 2px solid var(--color-accent);
    cursor: pointer;
    transition: background-color var(--duration-normal) var(--ease-smooth),
                color var(--duration-normal) var(--ease-smooth),
                transform var(--duration-fast) var(--ease-bounce);
  }

  .btn-ikincil:hover,
  .btn-ikincil:focus-visible {
    background-color: var(--color-accent);
    color: var(--color-dark);
  }

  .btn-ikincil:active {
    transform: scale(0.97);
  }

  .btn-buyuk {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--size-body);
  }

  /* === FORMS === */
  .form-alan {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .form-alan label {
    font-family: var(--font-body);
    font-size: var(--size-label);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-text-muted);
  }

  .form-alan :is(input, select, textarea) {
    font-family: var(--font-body);
    font-size: 1rem;
    letter-spacing: var(--tracking-mono);
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    inline-size: 100%;
    min-inline-size: 0;
    transition: border-color var(--duration-normal) var(--ease-smooth);
  }

  .form-alan :is(input, select, textarea):focus {
    border-color: var(--color-accent);
    outline: none;
  }

  .form-alan :is(input, select, textarea)::placeholder {
    color: var(--color-earth);
    opacity: 0.7;
  }

  .form-alan textarea {
    resize: vertical;
    min-block-size: 100px;
  }

  .form-alan select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23545453' d='M6 8.825L.35 3.175l.7-.7L6 7.425l4.95-4.95l.7.7z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-inline-end: calc(var(--space-md) + 24px);
  }

  .form-onay {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .form-onay input[type="checkbox"] {
    appearance: none;
    inline-size: 20px;
    block-size: 20px;
    flex-shrink: 0;
    margin-block-start: 2px;
    border: 2px solid var(--color-text-muted);
    background-color: var(--color-surface);
    cursor: pointer;
    position: relative;
    transition: border-color var(--duration-fast) var(--ease-smooth),
                background-color var(--duration-fast) var(--ease-smooth);
  }

  .form-onay input[type="checkbox"]:checked {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
  }

  .form-onay input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    inset-block-start: 2px;
    inset-inline-start: 6px;
    inline-size: 5px;
    block-size: 10px;
    border: solid var(--color-dark);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
  }

  .form-onay label {
    font-size: var(--size-small);
    line-height: 1.5;
    color: var(--color-text-muted);
  }

  .form-onay a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
  }

  .form-gonder {
    margin-block-start: var(--space-md);
  }

  /* === FOOTER === */
  .site-footer {
    background-color: var(--color-depth);
    color: var(--color-sand);
    padding-block-start: var(--space-2xl);
    margin-block-start: 0;
    border-block-start: 4px solid var(--color-dark);
  }

  .footer-icerik {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    max-inline-size: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
    padding-block-end: var(--space-xl);
    border-block-end: 1px solid var(--color-steel);
  }

  .footer-logo {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 2vw, 1.8rem);
    font-weight: 800;
    color: var(--color-sand);
    text-decoration: none;
    display: block;
    margin-block-end: var(--space-sm);
  }

  .footer-marka p {
    font-size: var(--size-small);
    color: var(--color-earth);
    max-inline-size: 28ch;
  }

  .footer-eposta {
    display: inline-block;
    margin-block-start: var(--space-sm);
    font-family: var(--font-body);
    font-size: var(--size-small);
    color: var(--color-accent);
    text-decoration: none;
    letter-spacing: var(--tracking-mono);
    transition: color var(--duration-fast) var(--ease-smooth);
  }

  .footer-eposta:hover,
  .footer-eposta:focus-visible {
    color: var(--color-sand);
  }

  .footer-nav h3,
  .footer-yasal h3,
  .footer-cta h3 {
    font-family: var(--font-body);
    font-size: var(--size-label);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-earth);
    margin-block-end: var(--space-md);
  }

  :is(.footer-nav, .footer-yasal) ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  :is(.footer-nav, .footer-yasal) a {
    font-size: var(--size-small);
    color: var(--color-sand);
    text-decoration: none;
    border-inline-start: 2px solid transparent;
    padding-inline-start: var(--space-sm);
    transition: border-color var(--duration-normal) var(--ease-smooth),
                color var(--duration-normal) var(--ease-smooth);
  }

  :is(.footer-nav, .footer-yasal) a:hover,
  :is(.footer-nav, .footer-yasal) a:focus-visible {
    border-inline-start-color: var(--color-accent);
    color: var(--color-accent);
  }

  .footer-cta p {
    font-size: var(--size-small);
    color: var(--color-earth);
    margin-block-end: var(--space-md);
    max-inline-size: 24ch;
  }

  .footer-cta .btn-birincil {
    font-size: var(--size-label);
  }

  .footer-alt {
    max-inline-size: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
    padding-block: var(--space-md);
  }

  .footer-alt p {
    font-size: var(--size-small);
    color: var(--color-steel);
  }

  /* === COOKIE POPUP === */
  .cerez-bildirim {
    position: fixed;
    inset-block-end: 0;
    inset-inline: 0;
    z-index: var(--z-cookie);
    background-color: var(--color-dark);
    border-block-start: 2px solid var(--color-steel);
    transform: translateY(0);
    transition: transform var(--duration-slow) var(--ease-out);
  }

  .cerez-bildirim.is-hidden {
    transform: translateY(110%);
  }

  .cerez-icerik {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    max-inline-size: var(--container-max);
    margin-inline: auto;
    padding: var(--space-md) var(--gutter);
  }

  .cerez-icerik p {
    font-size: var(--size-small);
    color: var(--color-earth);
    max-inline-size: 60ch;
  }

  .cerez-icerik a {
    color: var(--color-accent);
    text-decoration: underline;
  }

  .cerez-kabul {
    font-family: var(--font-body);
    font-size: var(--size-label);
    font-weight: 700;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--color-dark);
    background-color: var(--color-accent);
    padding: var(--space-xs) var(--space-md);
    border: 2px solid var(--color-accent);
    flex-shrink: 0;
    cursor: pointer;
    transition: background-color var(--duration-normal) var(--ease-smooth),
                color var(--duration-normal) var(--ease-smooth);
  }

  .cerez-kabul:hover,
  .cerez-kabul:focus-visible {
    background-color: transparent;
    color: var(--color-accent);
  }

  /* === SCROLL TOP === */
  .yukari-don {
    position: fixed;
    inset-block-end: var(--space-lg);
    inset-inline-end: var(--space-lg);
    z-index: var(--z-header);
    inline-size: 48px;
    block-size: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-dark);
    border: 2px solid var(--color-steel);
    color: var(--color-sand);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-normal) var(--ease-smooth),
                visibility var(--duration-normal) var(--ease-smooth),
                background-color var(--duration-normal) var(--ease-smooth),
                border-color var(--duration-normal) var(--ease-smooth);
  }

  .yukari-don.is-visible {
    opacity: 1;
    visibility: visible;
  }

  .yukari-don:hover,
  .yukari-don:focus-visible {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-dark);
  }

  .yukari-don svg {
    inline-size: 20px;
    block-size: 20px;
  }

  /* === Section intro text — consistent H2 styling === */
  .section-giris {
    font-size: var(--size-body);
    color: var(--color-steel);
    margin-block-start: var(--space-sm);
    margin-block-end: var(--space-xl);
    max-inline-size: 55ch;
  }

  /* === H2 — consistent decorator across all sections === */
  section h2 {
    position: relative;
    padding-block-end: var(--space-sm);
  }

  section h2::after {
    content: '';
    position: absolute;
    inset-block-end: 0;
    inset-inline-start: 0;
    inline-size: clamp(40px, 8vw, 80px);
    block-size: 4px;
    background-color: var(--color-flame);
  }
}

/* ================================================
   ANIMATIONS — Interaction-Only
   ================================================ */
@layer animations {
  /* --- All transitions/animations respect motion prefs --- */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

  /* --- Accent elements delayed reveal on load --- */
  [data-accent] {
    opacity: 0;
    transition: opacity var(--duration-slow) var(--ease-smooth);
    transition-delay: calc(var(--stagger, 0) * 80ms + 200ms);
  }

  [data-accent].is-revealed {
    opacity: 1;
  }

  /* --- Keyframes for interaction states --- */
  @keyframes border-pulse {
    0%, 100% { border-color: var(--color-accent); }
    50% { border-color: var(--color-flame); }
  }

  @keyframes icon-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }
}

/* ================================================
   UTILITIES
   ================================================ */
@layer utilities {
  .sr-only {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  /* --- Scroll lock for mobile nav (iOS-safe) --- */
  html.scroll-locked {
    overflow: hidden;
  }

  body.nav-open {
    overflow: hidden;
    position: fixed;
    inset-inline: 0;
  }
}

/* ================================================
   RESPONSIVE — Desktop-first (max-width)
   Approach: desktop-first (max-width)
   Breakpoints: 1279 / 1023 / 767 / 479
   ================================================ */

/* --- Below xl (1280px) --- */
@media (max-width: 1279px) {
  .header-icerik {
    gap: var(--space-sm);
  }

  .desktop-nav ul {
    gap: var(--space-md);
  }

  .footer-icerik {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-lg);
  }

  .footer-cta {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }

  .footer-cta h3 {
    margin-block-end: 0;
  }

  .footer-cta p {
    margin-block-end: 0;
  }

  /* Neutralize asymmetric tension on smaller screens */
  .stack-card[data-stack="contained"] .section-icerik {
    margin-inline-end: clamp(1rem, 4vw, 4rem);
  }

  .stack-card[data-stack="full"] .section-icerik {
    margin-inline-start: clamp(1rem, 4vw, 4rem);
  }
}

/* --- Below lg (1024px) --- */
@media (max-width: 1023px) {
  .desktop-nav ul {
    gap: var(--space-sm);
  }

  .desktop-nav a {
    font-size: var(--size-label);
  }

  .footer-icerik {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .footer-cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-cta h3 {
    margin-block-end: var(--space-sm);
  }

  /* Remove asymmetric offset entirely */
  .stack-card[data-stack="contained"] .section-icerik,
  .stack-card[data-stack="full"] .section-icerik {
    max-inline-size: none;
    margin-inline: auto;
    padding-inline: var(--gutter);
  }
}

/* --- Below md (768px) — Burger threshold --- */
@media (max-width: 767px) {
  .desktop-nav {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-inline-start: auto;
  }

  .footer-icerik {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-marka {
    border-block-end: 1px solid var(--color-steel);
    padding-block-end: var(--space-lg);
  }

  .footer-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  /* Cookie popup stacks */
  .cerez-icerik {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
    text-align: center;
  }

  .cerez-icerik p {
    max-inline-size: none;
  }

  .cerez-kabul {
    inline-size: 100%;
    text-align: center;
  }

  /* Scroll-top smaller */
  .yukari-don {
    inline-size: 40px;
    block-size: 40px;
    inset-block-end: var(--space-md);
    inset-inline-end: var(--space-md);
  }

  .yukari-don svg {
    inline-size: 16px;
    block-size: 16px;
  }
}

/* --- Below sm (480px) --- */
@media (max-width: 479px) {
  .logo {
    font-size: 1.2rem;
  }

  .site-header {
    border-block-end-width: 1px;
  }

  .mobile-nav {
    inline-size: min(85vw, 300px);
    padding-inline: var(--space-md);
  }

  .footer-alt p {
    text-align: center;
  }
}

/* --- Reduced motion for mobile nav --- */
@media (prefers-reduced-motion: reduce) {
  .mobile-nav,
  .nav-backdrop,
  .nav-toggle span {
    transition: none !important;
  }
}