/* ============================================
   FENETRE — Design System CSS
   Perde ve Sineklik Sistemleri
   Version: 1.0.0
   Kaynak sözleşme: docs/DESIGN-SYSTEM.md (135 bölüm)
   Felsefe: Shadow YOK — border bazlı tasarım
   ============================================ */

@layer base, tokens, layout, components, sections, utilities, print;

/* ============================================
   @layer tokens — CSS Custom Properties
   ============================================ */
@layer tokens {
  :root {
    color-scheme: light;

    /* ===== Brand Colors ===== */
    --color-primary:        #83bd81;
    --color-primary-hover:  #6fa86d;
    --color-primary-light:  #e8f5e8;
    --color-primary-dark:   #5a9257;

    --color-dark:           #404e5e;
    --color-dark-hover:     #334155;
    --color-dark-light:     #64748b;

    /* ===== Neutral ===== */
    --color-white:          #ffffff;
    --color-bg:             #f8f9fa;
    --color-bg-subtle:      #f3f4f6;
    --color-border:         #e5e7eb;
    --color-border-strong:  #d1d5db;

    /* ===== Text ===== */
    --color-text-main:      #1a1a2e;
    --color-text-secondary: #6b7280;
    --color-text-muted:     #9ca3af;
    --color-text-inverse:   #ffffff;

    /* ===== Semantic ===== */
    --color-success:        #22c55e;
    --color-success-dark:   #16a34a;
    --color-warning:        #f59e0b;
    --color-error:          #ef4444;
    --color-error-dark:     #dc2626;
    --color-info:           #3b82f6;

    /* ===== Support (WhatsApp) ===== */
    --color-whatsapp:       #25d366;
    --color-whatsapp-dark:  #1ebe5d;

    /* ===== Tonal (primary) ===== */
    --fenetre-50:  #f0f9ef;
    --fenetre-100: #dcf0da;
    --fenetre-400: #83bd81;
    --fenetre-600: #5a9257;

    /* ===== Font ===== */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, "Noto Sans", sans-serif,
                 "Apple Color Emoji", "Segoe UI Emoji";

    /* ===== Font Sizes ===== */
    --text-xs:   0.75rem;
    --text-sm:   0.875rem;
    --text-base: 1rem;
    --text-lg:   1.125rem;
    --text-xl:   1.375rem;
    --text-2xl:  1.875rem;
    --text-3xl:  2.25rem;
    --text-4xl:  2.5rem;
    --text-5xl:  3rem;

    /* ===== Font Weights ===== */
    --font-normal:   400;
    --font-medium:   500;
    --font-semibold: 600;
    --font-bold:     700;

    /* ===== Line Heights ===== */
    --leading-tight:   1.2;
    --leading-snug:    1.3;
    --leading-normal:  1.5;
    --leading-relaxed: 1.7;
    --leading-loose:   1.8;

    /* ===== Letter Spacing ===== */
    --tracking-tighter: -0.05em;
    --tracking-tight:   -0.025em;
    --tracking-snug:    -0.01em;
    --tracking-normal:   0em;
    --tracking-wide:     0.025em;
    --tracking-wider:    0.05em;
    --tracking-widest:   0.1em;

    /* ===== Spacing (8px bazlı) ===== */
    --space-1:  4px;
    --space-2:  8px;
    --space-3:  12px;
    --space-4:  16px;
    --space-5:  24px;
    --space-6:  32px;
    --space-7:  48px;
    --space-8:  64px;
    --space-9:  96px;
    --space-10: 128px;

    /* ===== Layout ===== */
    --container-max: 1366px;
    --container-padding-desktop: 24px;
    --container-padding-mobile:  16px;

    /* ===== Border Radius ===== */
    --radius-sm:   4px;
    --radius-md:   6px;
    --radius-lg:   8px;
    --radius-xl:   12px;
    --radius-2xl:  16px;
    --radius-full: 9999px;

    /* ===== Focus Ring (erişilebilirlik) ===== */
    --focus-ring: 0 0 0 3px rgba(131, 189, 129, 0.3);

    /* ===== Icon Sizes ===== */
    --icon-xs:  14px;
    --icon-sm:  16px;
    --icon-md:  20px;
    --icon-lg:  24px;
    --icon-xl:  32px;
    --icon-2xl: 48px;

    /* ===== Z-Index Scale ===== */
    --z-base:      0;
    --z-raised:    10;
    --z-dropdown:  100;
    --z-sticky:    200;
    --z-overlay:   300;
    --z-modal:     400;
    --z-toast:     500;
    --z-tooltip:   600;
    --z-whatsapp:  700;

    /* ===== Transitions ===== */
    --duration-fast:   100ms;
    --duration-normal: 150ms;
    --duration-slow:   250ms;
    --duration-slower: 400ms;

    --ease-default: ease;
    --ease-in:      cubic-bezier(0.4, 0, 1, 1);
    --ease-out:     cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out:  cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce:  cubic-bezier(0.34, 1.56, 0.64, 1);

    --transition-colors: color var(--duration-normal) var(--ease-default),
                         background-color var(--duration-normal) var(--ease-default),
                         border-color var(--duration-normal) var(--ease-default);
    --transition-transform: transform var(--duration-normal) var(--ease-out);
    --transition-opacity: opacity var(--duration-normal) var(--ease-default);
    --transition-all: var(--transition-colors), var(--transition-transform);

    /* ===== Fluid Typography (clamp) — DESIGN-SYSTEM Bölüm 57 ===== */
    --text-fluid-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);   /* 24 → 36px */
    --text-fluid-3xl: clamp(1.875rem, 1.4rem + 2.375vw, 3rem);  /* 30 → 48px */
    --text-fluid-h1:  clamp(1.75rem, 1.4rem + 1.75vw, 2.5rem);  /* 28 → 40px */
  }
}

/* ============================================
   @layer base — Reset & Global
   ============================================ */
@layer base {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 68px;
  }

  body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-relaxed);
    color: var(--color-text-main);
    background: var(--color-white);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: none;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    line-height: var(--leading-tight);
    color: var(--color-text-main);
    font-weight: var(--font-semibold);
  }

  :is(h1, h2, h3, h4) { text-wrap: balance; }
  p { text-wrap: pretty; }

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

  button {
    font-family: inherit;
    cursor: pointer;
    background: none;
    border: none;
  }

  input, select, textarea {
    font-family: inherit;
    font-size: 16px;
  }

  ul, ol { list-style: none; }
  a { color: inherit; text-decoration: none; }
  table { border-collapse: collapse; border-spacing: 0; }

  :focus { outline: none; }
  :focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

  * { -webkit-tap-highlight-color: transparent; }
  button, a, [role="button"] { touch-action: manipulation; }

  ::selection {
    background: rgba(131, 189, 129, 0.25);
    color: var(--color-text-main);
  }

  ::-webkit-scrollbar { width: 8px; height: 8px; }
  ::-webkit-scrollbar-track { background: var(--color-bg-subtle); }
  ::-webkit-scrollbar-thumb { background: var(--color-border-strong); border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: var(--color-dark-light); }

  [id] { scroll-margin-top: 80px; }

  /* Skip to content */
  .skip-to-content {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary-dark);
    color: var(--color-white);
    border-radius: var(--radius-md);
    font-weight: var(--font-medium);
    z-index: 9999;
    transition: top var(--duration-fast);
  }
  .skip-to-content:focus { top: var(--space-4); }

  .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;
  }
}

/* ============================================
   @layer layout — Container, Grid, Section
   ============================================ */
@layer layout {
  .container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding-desktop);
  }

  .container-narrow {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 var(--container-padding-desktop);
  }

  .section {
    padding: var(--space-9) 0;
    isolation: isolate;
  }
  .section-subtle { background: var(--color-bg); }
  .section-sm { padding: var(--space-8) 0; }

  .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
  .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
  .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }

  .grid-auto-sm { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--space-5); }
  .grid-auto-md { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-5); }

  @media (max-width: 768px) {
    .section { padding: var(--space-8) 0; }
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 640px) {
    .container, .container-narrow { padding: 0 var(--container-padding-mobile); }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  }
}

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

  /* ===== Section Header ===== */
  .section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto var(--space-7);
  }
  .section-label {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-3);
  }
  .section-title {
    font-size: var(--text-fluid-2xl);
    font-weight: var(--font-bold);
    color: var(--color-dark);
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-snug);
    margin-bottom: var(--space-4);
  }
  .section-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
  }

  /* ===== Button ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 44px;
    padding: 0 var(--space-5);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-wide);
    line-height: 1;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-colors);
    white-space: nowrap;
    text-decoration: none;
  }
  .btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
  .btn img { flex-shrink: 0; }

  .btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
  }
  .btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

  .btn-secondary {
    background: transparent;
    color: var(--color-primary-dark);
    border-color: var(--color-primary);
  }
  .btn-secondary:hover { background: var(--color-primary-light); }

  .btn-dark {
    background: var(--color-dark);
    color: var(--color-white);
    border-color: var(--color-dark);
  }
  .btn-dark:hover { background: var(--color-dark-hover); border-color: var(--color-dark-hover); }

  .btn-ghost {
    background: transparent;
    color: var(--color-dark);
    border-color: transparent;
  }
  .btn-ghost:hover { background: var(--color-bg-subtle); }

  .btn-whatsapp {
    background: var(--color-whatsapp);
    color: var(--color-white);
    border-color: var(--color-whatsapp);
  }
  .btn-whatsapp:hover { background: var(--color-whatsapp-dark); border-color: var(--color-whatsapp-dark); }

  .btn-danger {
    background: var(--color-error);
    color: var(--color-white);
    border-color: var(--color-error);
  }
  .btn-danger:hover { background: var(--color-error-dark); border-color: var(--color-error-dark); }

  .btn-sm { height: 36px; padding: 0 14px; font-size: 0.8125rem; gap: 6px; }
  .btn-lg { height: 52px; padding: 0 var(--space-6); font-size: 0.9375rem; }
  .btn-xl { height: 60px; padding: 0 var(--space-7); font-size: var(--text-base); gap: 10px; border-radius: var(--radius-lg); }
  .btn-full { width: 100%; }
  .btn:disabled, .btn.is-loading { opacity: 0.6; cursor: not-allowed; pointer-events: none; }

  .btn.is-loading::after {
    content: "";
    width: 14px; height: 14px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: var(--space-2);
  }

  /* ===== Card ===== */
  .card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: border-color var(--duration-normal) var(--ease-default);
  }
  .card:hover { border-color: var(--color-primary); }

  .card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-dark);
    line-height: var(--leading-snug);
  }
  .card-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-top: var(--space-2);
  }

  /* Feature card (ikon üstte) */
  .feature-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: border-color var(--duration-normal) var(--ease-default);
  }
  .feature-card:hover { border-color: var(--color-primary); }
  .feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px; height: 56px;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
  }
  .feature-icon img { width: var(--icon-xl); height: var(--icon-xl); }
  .feature-card h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-dark);
    margin-bottom: var(--space-2);
  }
  .feature-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
  }

  /* ===== Badge ===== */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
  }
  .badge-primary { background: var(--color-primary-light); color: var(--color-primary-dark); }
  .badge-gray { background: var(--color-bg-subtle); color: var(--color-text-secondary); }

  /* ===== Icon helpers ===== */
  .icon-sm  { width: var(--icon-sm);  height: var(--icon-sm); }
  .icon-md  { width: var(--icon-md);  height: var(--icon-md); }
  .icon-lg  { width: var(--icon-lg);  height: var(--icon-lg); }
  .icon-xl  { width: var(--icon-xl);  height: var(--icon-xl); }
  /* CSS filter ile renklendirme (img tag SVG için) */
  .icon-primary { filter: invert(64%) sepia(19%) saturate(811%) hue-rotate(74deg) brightness(91%) contrast(85%); }
  .icon-dark { filter: invert(28%) sepia(13%) saturate(900%) hue-rotate(175deg) brightness(94%) contrast(88%); }
  .icon-white { filter: brightness(0) invert(1); }

  /* ===== Form ===== */
  .form-grid {
    display: grid;
    gap: var(--space-4);
  }
  .form-grid-two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  @media (max-width: 640px) {
    .form-grid-two { grid-template-columns: 1fr; }
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: var(--space-4);
  }
  .label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-main);
  }
  .label span[aria-hidden] { color: var(--color-error); }

  .input, .select, .textarea {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 16px;
    color: var(--color-text-main);
    background: var(--color-white);
    transition: var(--transition-colors);
    appearance: none;
    -webkit-appearance: none;
  }
  .input, .select { height: 48px; padding: 0 var(--space-4); }
  .textarea { padding: var(--space-3) var(--space-4); resize: vertical; min-height: 130px; font-family: var(--font-sans); line-height: var(--leading-relaxed); }

  .select {
    appearance: none;
    cursor: pointer;
    background-image: url("/assets/img/icons/outline/chevron-down.svg");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 18px;
    padding-right: var(--space-8);
  }

  .input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
  }
  .input::placeholder, .textarea::placeholder { color: var(--color-text-muted); }

  .input.is-error, .select.is-error, .textarea.is-error { border-color: var(--color-error); }

  .form-error {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-error);
    min-height: 16px;
  }
  .form-error:empty {
    display: none;
    min-height: 0;
  }
  .form-hint { font-size: var(--text-xs); color: var(--color-text-muted); }

  /* ===== Checkbox & Radio (DESIGN-SYSTEM Bölüm 43) ===== */
  .checkbox-wrapper, .radio-wrapper { display: flex; align-items: flex-start; gap: var(--space-3); cursor: pointer; }
  .radio-wrapper { align-items: center; }
  .checkbox-input, .radio-input {
    appearance: none;
    -webkit-appearance: none;
    width: 18px; height: 18px; min-width: 18px;
    border: 1.5px solid var(--color-border-strong);
    background: var(--color-white);
    cursor: pointer;
    transition: var(--transition-colors);
  }
  .checkbox-input { border-radius: var(--radius-sm); margin-top: 2px; }
  .radio-input { border-radius: var(--radius-full); }
  .checkbox-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 12px;
  }
  .radio-input:checked { border-color: var(--color-primary); border-width: 5px; }
  .checkbox-input:focus-visible, .radio-input:focus-visible { outline: none; box-shadow: var(--focus-ring); }
  .checkbox-label, .radio-label { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: var(--leading-normal); cursor: pointer; }

  /* Honeypot — gizli */
  .hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

  /* ===== Alert ===== */
  .alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    border-left: 4px solid transparent;
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
  }
  .alert img { width: 20px; height: 20px; flex-shrink: 0; margin-top: 1px; }
  .alert-success { background: #f0fdf4; border-left-color: var(--color-success); color: #166534; }
  .alert-error { background: #fef2f2; border-left-color: var(--color-error); color: #991b1b; }
  .alert-info { background: #eff6ff; border-left-color: var(--color-info); color: #1e40af; }
  .alert[hidden] { display: none; }

  /* ===== Styled List (check marker) ===== */
  .list-check {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }
  .list-check li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
  }
  .list-check li::before {
    content: "";
    width: 20px; height: 20px;
    min-width: 20px;
    margin-top: 2px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%235a9257'%3E%3Cpath fill-rule='evenodd' d='M16.704 4.153a.75.75 0 01.143 1.052l-8 10.5a.75.75 0 01-1.127.075l-4.5-4.5a.75.75 0 011.06-1.06l3.894 3.893 7.48-9.817a.75.75 0 011.05-.143z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
  }

  /* ===== Breadcrumb ===== */
  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--text-sm);
    margin-bottom: var(--space-5);
  }
  .breadcrumb ol { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); }
  .breadcrumb li { display: flex; align-items: center; gap: var(--space-2); }
  .breadcrumb a { color: var(--color-text-secondary); transition: color var(--duration-normal); }
  .breadcrumb a:hover { color: var(--color-primary-dark); }
  .breadcrumb li[aria-current] { color: var(--color-text-main); font-weight: var(--font-medium); }
  .breadcrumb li:not(:last-child)::after {
    content: "/";
    color: var(--color-text-muted);
    margin-left: var(--space-2);
  }

  /* ===== Table ===== */
  .table-wrapper {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: border-color var(--duration-normal) var(--ease-default);
  }
  .table-wrapper:hover { border-color: var(--color-primary); }
  .table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
  .table caption { text-align: left; padding: var(--space-4); font-weight: var(--font-semibold); color: var(--color-dark); }
  .table th {
    background: var(--color-bg-subtle);
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: var(--font-semibold);
    color: var(--color-text-main);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
  }
  .table td {
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
  }
  .table tr:last-child td { border-bottom: none; }

  /* ===== Accordion ===== */
  .accordion { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: border-color var(--duration-normal) var(--ease-default); }
  .accordion:hover { border-color: var(--color-primary); }
  .accordion-item { border-bottom: 1px solid var(--color-border); transition: border-color var(--duration-normal) var(--ease-default); }
  .accordion-item:hover { border-color: var(--color-primary); }
  .accordion-item:last-child { border-bottom: none; }
  .accordion-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-5);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-text-main);
    text-align: left;
  }
  .accordion-trigger:hover { color: var(--color-primary-dark); }
  .accordion-icon { width: var(--icon-md); height: var(--icon-md); flex-shrink: 0; transition: transform var(--duration-normal) var(--ease-out); }
  .accordion-trigger[aria-expanded="true"] .accordion-icon { transform: rotate(180deg); }
  .accordion-content {
    padding: 0 var(--space-5) var(--space-5);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    display: none;
  }
  .accordion-content.is-open { display: block; }

  /* ===== Navigation ===== */
  .nav {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    height: 64px;
    transition: border-color var(--duration-normal) var(--ease-out),
                height var(--duration-normal) var(--ease-out);
  }
  .nav.is-scrolled { border-bottom: 2px solid var(--color-border-strong); height: 56px; }

  .nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding-desktop);
    gap: var(--space-5);
  }

  .nav-logo { flex-shrink: 0; display: flex; align-items: center; }
  .nav-logo img { height: 38px; width: auto; }
  .nav.is-scrolled .nav-logo img { height: 32px; }

  .nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-5);
  }
  .nav-link {
    position: relative;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    padding: var(--space-2) 0;
    transition: color var(--duration-normal) var(--ease-default);
    white-space: nowrap;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0; right: 0;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-normal) var(--ease-out);
  }
  .nav-link:hover { color: var(--color-text-main); }
  .nav-link:hover::after { transform: scaleX(1); }
  .nav-link[aria-current="page"] { color: var(--color-primary-dark); font-weight: var(--font-semibold); }
  .nav-link[aria-current="page"]::after { transform: scaleX(1); }

  .nav-actions { display: flex; align-items: center; gap: var(--space-4); flex-shrink: 0; }
  .nav-phone {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-dark);
    white-space: nowrap;
    transition: color var(--duration-normal);
  }
  .nav-phone:hover { color: var(--color-primary-dark); }

  /* Hamburger */
  .nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px; height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background-color var(--duration-normal);
  }
  .nav-hamburger:hover { background: var(--color-bg-subtle); }
  .nav-hamburger span {
    display: block;
    width: 20px; height: 2px;
    background: var(--color-text-main);
    border-radius: 2px;
    transition: transform var(--duration-normal) var(--ease-in-out), opacity var(--duration-normal);
  }
  .nav-hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  .nav-hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Drawer */
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: var(--z-overlay);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity var(--duration-slow) var(--ease-out);
  }
  .nav-overlay.is-open { display: block; opacity: 1; }

  .nav-drawer {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(320px, 85vw);
    background: var(--color-white);
    z-index: calc(var(--z-overlay) + 1);
    padding: var(--space-5);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-in-out);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }
  .nav-drawer.is-open { transform: translateX(0); }

  .nav-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-drawer-header img { height: 34px; width: auto; }
  .nav-drawer-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px; height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background-color var(--duration-normal);
  }
  .nav-drawer-close:hover { background: var(--color-bg-subtle); }

  .nav-drawer-links { display: flex; flex-direction: column; }
  .nav-drawer-link {
    display: flex;
    align-items: center;
    padding: var(--space-4) 0;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-text-main);
    border-bottom: 1px solid var(--color-border);
    min-height: 44px;
    transition: color var(--duration-normal), padding-left var(--duration-normal);
  }
  .nav-drawer-link:hover { color: var(--color-primary-dark); padding-left: var(--space-2); }
  .nav-drawer-link[aria-current="page"] { color: var(--color-primary-dark); font-weight: var(--font-semibold); }

  .nav-drawer-actions { display: flex; flex-direction: column; gap: var(--space-3); }
  .nav-drawer-contact {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-style: normal;
    line-height: var(--leading-relaxed);
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-4);
    margin-top: auto;
  }

  @media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions { display: none; }
    .nav-hamburger { display: flex; }
  }
  body.nav-open { overflow: hidden; }

  /* ===== Footer ===== */
  .footer {
    background: var(--color-dark);
    padding: var(--space-9) 0 0;
    color: var(--color-text-inverse);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: var(--space-6);
    padding-bottom: var(--space-6);
  }
  .footer-brand img { height: 40px; width: auto; }
  .footer-slogan {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.6);
    margin-top: var(--space-4);
    line-height: var(--leading-relaxed);
  }
  .footer-address {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.5);
    margin-top: var(--space-3);
    font-style: normal;
    line-height: var(--leading-relaxed);
  }
  .footer-heading {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: rgba(255,255,255,0.45);
    margin-bottom: var(--space-4);
  }
  .footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
  .footer-link {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.7);
    transition: color var(--duration-normal);
  }
  .footer-link:hover { color: var(--color-primary); }

  .footer-contact { display: flex; flex-direction: column; gap: var(--space-3); }
  .footer-contact li { display: flex; align-items: center; gap: var(--space-2); }
  .footer-contact img { opacity: 0.55; flex-shrink: 0; }
  .footer-text { font-size: var(--text-sm); color: rgba(255,255,255,0.5); }

  .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: var(--space-4) 0; }
  .footer-bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .footer-copyright { font-size: var(--text-xs); color: rgba(255,255,255,0.4); }
  .footer-bottom-links { display: flex; gap: var(--space-5); }
  .footer-bottom-link { font-size: var(--text-xs); color: rgba(255,255,255,0.4); transition: color var(--duration-normal); }
  .footer-bottom-link:hover { color: rgba(255,255,255,0.8); }

  @media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
  }
  @media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
    .footer-bottom .container { flex-direction: column; gap: var(--space-2); text-align: center; }
  }

  /* ===== WhatsApp Float ===== */
  .whatsapp-float {
    position: fixed;
    bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
    right: calc(var(--space-6) + env(safe-area-inset-right));
    z-index: var(--z-whatsapp);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-whatsapp);
    color: var(--color-white);
    padding: 0 var(--space-5);
    height: 52px;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    transform: translateY(120px);
    opacity: 0;
    transition: transform var(--duration-slow) var(--ease-out), opacity var(--duration-slow) var(--ease-out), background-color var(--duration-normal);
  }
  .whatsapp-float.is-visible { transform: translateY(0); opacity: 1; }
  .whatsapp-float:hover { background: var(--color-whatsapp-dark); }
  .whatsapp-float img { width: 24px; height: 24px; flex-shrink: 0; }

  /* ===== Mobile Bottom Bar ===== */
  .mobile-bar {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: var(--z-sticky);
    background: var(--color-white);
    border-top: 2px solid var(--color-border);
    padding: var(--space-2) var(--space-3);
    padding-bottom: calc(var(--space-2) + env(safe-area-inset-bottom));
    gap: var(--space-2);
  }
  .mobile-bar-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-height: 54px;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    letter-spacing: var(--tracking-wide);
  }
  .mobile-bar-btn:active { opacity: 0.85; }
  .mobile-bar-btn img { width: 22px; height: 22px; flex-shrink: 0; }
  .mobile-bar-phone { background: var(--color-dark); color: var(--color-white); }
  .mobile-bar-whatsapp { background: var(--color-whatsapp); color: var(--color-white); }
  .mobile-bar-offer { background: var(--color-primary-dark); color: var(--color-white); }

  @media (max-width: 768px) {
    .mobile-bar { display: flex; }
    body { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
    .whatsapp-float { display: none; }
  }
}

/* ============================================
   @layer sections
   ============================================ */
@layer sections {

  /* ===== Hero (Ana Sayfa) ===== */
  .hero {
    position: relative;
    padding: var(--space-9) 0 var(--space-8);
    background: linear-gradient(160deg, var(--fenetre-50) 0%, var(--color-white) 60%);
    overflow: hidden;
  }
  .hero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: var(--space-6);
  }
  .hero-content { display: flex; flex-direction: column; }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px 14px;
    background: var(--color-white);
    border: 1px solid var(--color-primary);
    color: var(--color-primary-dark);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-5);
    width: fit-content;
  }
  .hero-badge img { width: 16px; height: 16px; }
  .hero-title {
    font-size: var(--text-fluid-3xl);
    font-weight: var(--font-bold);
    color: var(--color-dark);
    line-height: 1.1;
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-4);
  }
  .hero-desc {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    max-width: 540px;
    margin-bottom: var(--space-6);
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
  .hero-authority {
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: 1px solid var(--color-border);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    max-width: 560px;
  }
  .hero-visual {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--color-primary-light);
    border: 1px solid var(--color-border);
  }
  .hero-visual img { width: 100%; height: 100%; object-fit: cover; }
  .hero-visual-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%; height: 100%;
    color: var(--color-primary-dark);
    text-align: center;
    padding: var(--space-6);
  }
  .hero-visual-placeholder img { width: 72px; height: 72px; opacity: 0.7; }
  .hero-visual-placeholder span { font-size: var(--text-sm); font-weight: var(--font-medium); }

  @media (max-width: 768px) {
    .hero { padding: var(--space-7) 0 var(--space-8); }
    .hero-inner { grid-template-columns: 1fr; gap: var(--space-6); }
    .hero-visual { aspect-ratio: 16 / 9; order: -1; }
    .hero-desc { max-width: 100%; }
  }

  /* ===== Page Hero (İç sayfalar) ===== */
  .page-hero {
    padding: var(--space-8) 0;
    background: linear-gradient(160deg, var(--fenetre-50) 0%, var(--color-white) 70%);
    border-bottom: 1px solid var(--color-border);
  }
  .page-hero h1 {
    font-size: var(--text-fluid-h1);
    font-weight: var(--font-bold);
    color: var(--color-dark);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-3);
  }
  .page-hero p {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    max-width: 720px;
  }
  @media (max-width: 768px) {
    .page-hero p { font-size: var(--text-base); }
  }

  /* ===== Trust Bar ===== */
  .trust-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
    padding: var(--space-6) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }
  .trust-item { display: flex; flex-direction: column; align-items: center; text-align: center; gap: var(--space-1); }
  .trust-value { font-size: var(--text-3xl); font-weight: var(--font-bold); color: var(--color-primary-dark); letter-spacing: var(--tracking-tight); line-height: 1; }
  .trust-label { font-size: var(--text-sm); color: var(--color-text-secondary); font-weight: var(--font-medium); }
  @media (max-width: 640px) {
    .trust-bar { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
  }

  /* ===== Timeline (Süreç) ===== */
  .timeline { position: relative; display: flex; flex-direction: column; }
  .timeline::before {
    content: "";
    position: absolute;
    left: 19px; top: 20px; bottom: 20px;
    width: 2px;
    background: var(--color-border);
  }
  .timeline-item { display: flex; gap: var(--space-4); padding-bottom: var(--space-6); position: relative; }
  .timeline-item:last-child { padding-bottom: 0; }
  .timeline-step {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    min-width: 40px;
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-primary-dark);
    z-index: var(--z-raised);
  }
  .timeline-title { font-size: var(--text-base); font-weight: var(--font-semibold); color: var(--color-dark); margin-bottom: var(--space-1); }
  .timeline-desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: var(--leading-relaxed); }

  /* ===== CTA Block ===== */
  .cta-block {
    background: linear-gradient(135deg, var(--fenetre-50) 0%, var(--color-white) 100%);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-8) var(--space-6);
    text-align: center;
  }
  .cta-block h2 { font-size: var(--text-fluid-2xl); font-weight: var(--font-bold); color: var(--color-dark); margin-bottom: var(--space-3); letter-spacing: var(--tracking-snug); }
  .cta-block p { font-size: var(--text-lg); color: var(--color-text-secondary); line-height: var(--leading-relaxed); max-width: 600px; margin: 0 auto var(--space-6); }
  .cta-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: var(--space-3); }

  /* ===== Product Card ===== */
  .product-card {
    display: flex;
    flex-direction: column;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: border-color var(--duration-normal) var(--ease-default);
  }
  .product-card:hover { border-color: var(--color-primary); }
  .product-media {
    aspect-ratio: 3 / 2;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .product-media img { width: 100%; height: 100%; object-fit: cover; }
  .product-media .ph-icon { width: 56px; height: 56px; opacity: 0.55; }
  .product-body { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
  .product-body h3 { font-size: var(--text-lg); font-weight: var(--font-semibold); color: var(--color-dark); }
  .product-body p { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: var(--leading-relaxed); }
  .product-body .btn { margin-top: auto; }

  /* ===== Tabs (Ürünler) ===== */
  .tabs { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; margin-bottom: var(--space-7); }
  .tab-btn {
    padding: var(--space-3) var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    background: var(--color-white);
    transition: var(--transition-colors);
    min-height: 44px;
  }
  .tab-btn:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
  .tab-btn[aria-selected="true"] { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white); }
  .tab-panel[hidden] { display: none; }

  /* ===== Detail Block (ürün/hizmet uzun) ===== */
  .detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); align-items: center; }
  .detail-grid.reverse .detail-media { order: 2; }
  .detail-media {
    aspect-ratio: 4 / 3;
    background: var(--color-primary-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  .detail-media img { width: 100%; height: 100%; object-fit: cover; }
  .detail-media .ph-icon { width: 64px; height: 64px; opacity: 0.5; }
  .detail-content h3 { font-size: var(--text-xl); font-weight: var(--font-semibold); color: var(--color-dark); margin-bottom: var(--space-3); }
  .detail-content > p { font-size: var(--text-base); color: var(--color-text-secondary); line-height: var(--leading-relaxed); margin-bottom: var(--space-4); }
  @media (max-width: 768px) {
    .detail-grid { grid-template-columns: 1fr; gap: var(--space-5); }
    .detail-grid.reverse .detail-media { order: 0; }
  }

  /* ===== Region Card ===== */
  .region-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-5); transition: border-color var(--duration-normal); }
  .region-card:hover { border-color: var(--color-primary); }
  .region-card h3 { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-lg); font-weight: var(--font-semibold); color: var(--color-dark); margin-bottom: var(--space-3); }
  .region-card h3 img { width: 22px; height: 22px; }
  .region-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }

  /* ===== Contact Layout ===== */
  .contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--space-6); align-items: start; }
  .contact-info { display: flex; flex-direction: column; gap: var(--space-4); }
  .contact-info-grid { display: grid; gap: var(--space-4); }
  .contact-info-grid-one { grid-template-columns: 1fr; }
  .contact-info-grid-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-item { display: flex; align-items: flex-start; gap: var(--space-4); padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-white); transition: border-color var(--duration-normal) var(--ease-default); }
  .contact-item:hover { border-color: var(--color-primary); }
  .contact-item-icon { display: flex; align-items: center; justify-content: center; width: 52px; height: 52px; min-width: 52px; background: var(--color-primary-light); border-radius: var(--radius-md); }
  .contact-item-icon img { width: 22px; height: 22px; }
  .contact-item-content { display: flex; flex-direction: column; gap: 6px; line-height: 1.35; }
  .contact-item-label { font-size: var(--text-sm); font-weight: var(--font-medium); color: var(--color-text-muted); letter-spacing: 0.01em; text-transform: none; }
  .contact-item-value { font-size: var(--text-lg); font-weight: var(--font-semibold); color: var(--color-text-main); }
  .contact-item-value address { font-style: normal; font-weight: inherit; color: inherit; }
  .contact-item a { color: inherit; }
  .contact-item a:hover { color: var(--color-primary-dark); }
  .map-wrapper { border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--color-border); aspect-ratio: 16 / 10; margin-top: var(--space-7); transition: border-color var(--duration-normal) var(--ease-default); }
  .map-wrapper:hover { border-color: var(--color-primary); }
  .map-wrapper iframe { width: 100%; height: 100%; border: 0; display: block; }
  @media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; gap: var(--space-6); }
    .contact-info-grid-two { grid-template-columns: 1fr; }
  }

  /* ===== 404 ===== */
  .error-page {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-8) var(--space-4);
    gap: var(--space-4);
  }
  .error-code { font-size: 6rem; font-weight: var(--font-bold); color: var(--color-primary); line-height: 1; letter-spacing: var(--tracking-tight); }
  .error-page h1 { font-size: var(--text-2xl); color: var(--color-dark); }
  .error-page p { font-size: var(--text-base); color: var(--color-text-secondary); max-width: 480px; }
}

/* ============================================
   @layer utilities
   ============================================ */
@layer utilities {
  .text-center { text-align: center; }
  .text-left { text-align: left; }
  .flex { display: flex; }
  .items-center { align-items: center; }
  .justify-center { justify-content: center; }
  .flex-wrap { flex-wrap: wrap; }
  .gap-2 { gap: var(--space-2); }
  .gap-3 { gap: var(--space-3); }
  .gap-4 { gap: var(--space-4); }
  .mt-4 { margin-top: var(--space-4); }
  .mt-6 { margin-top: var(--space-6); }
  .mb-0 { margin-bottom: 0; }
  .mb-4 { margin-bottom: var(--space-4); }
  .mb-6 { margin-bottom: var(--space-6); }
  .mx-auto { margin-left: auto; margin-right: auto; }
  .w-full { width: 100%; }
  .max-w-prose { max-width: 65ch; }
  .hidden { display: none; }
  .text-primary { color: var(--color-primary-dark); }
  .text-secondary { color: var(--color-text-secondary); }
  .font-semibold { font-weight: var(--font-semibold); }

  .prose p { margin-bottom: var(--space-4); color: var(--color-text-secondary); line-height: var(--leading-loose); }
  .prose p:last-child { margin-bottom: 0; }
  .prose strong { color: var(--color-text-main); font-weight: var(--font-semibold); }

  /* Reveal on scroll (IntersectionObserver) */
  .reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--duration-slower) var(--ease-out), transform var(--duration-slower) var(--ease-out); }
  .reveal.is-visible { opacity: 1; transform: translateY(0); }

  @keyframes spin { to { transform: rotate(360deg); } }

  @media (max-width: 640px) {
    .hide-mobile { display: none; }
  }
}

/* ============================================
   Erişilebilirlik — Reduced Motion
   ============================================ */
@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;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================
   @layer print
   ============================================ */
@layer print {
  @media print {
    .nav, .footer, .whatsapp-float, .mobile-bar, .nav-drawer, .nav-overlay, .hero-actions, .cta-actions { display: none !important; }
    body { background: white; color: black; font-size: 11pt; padding-bottom: 0; }
    .section { padding: 12pt 0; break-inside: avoid; }
    a[href]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #666; }
  }
}