/* =============================================================
   İSTANBUL PLİSE PERDE — DESIGN SYSTEM v1.0
   Design Tokens · Typography · Spacing · Components
   ============================================================= */

/* ─── 1. DESIGN TOKENS ───────────────────────────────────────── */
:root {
  /* Color Palette */
  --color-primary:       #83bd81;
  --color-primary-dark:  #3d7a3b;
  --color-primary-light: #a8d4a6;
  --color-primary-50:    #f0f8ef;
  --color-primary-100:   #d4ead3;

  --color-dark:          #404e5e;
  --color-dark-90:       #4d5d6f;
  --color-dark-70:       #6b7a8d;
  --color-dark-50:       #9aa5b1;
  --color-dark-20:       #d6dade;

  --color-neutral-900:   #111827;
  --color-neutral-800:   #1f2937;
  --color-neutral-700:   #374151;
  --color-neutral-600:   #4b5563;
  --color-neutral-500:   #6b7280;
  --color-neutral-400:   #9ca3af;
  --color-neutral-300:   #d1d5db;
  --color-neutral-200:   #e5e7eb;
  --color-neutral-100:   #f3f4f6;
  --color-neutral-50:    #f9fafb;

  --color-white:         #ffffff;
  --color-body-bg:       #ffffff;

  --color-success:       #14532d;
  --color-warning:       #d97706;
  --color-info:          #0369a1;

  /* Typography */
  --font-family:         -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                         "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-family-mono:    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --font-size-xs:        0.75rem;   /* 12px */
  --font-size-sm:        0.875rem;  /* 14px */
  --font-size-base:      1rem;      /* 16px */
  --font-size-lg:        1.125rem;  /* 18px */
  --font-size-xl:        1.25rem;   /* 20px */
  --font-size-2xl:       1.5rem;    /* 24px */
  --font-size-3xl:       1.875rem;  /* 30px */
  --font-size-4xl:       2.25rem;   /* 36px */
  --font-size-5xl:       3rem;      /* 48px */
  --font-size-6xl:       3.75rem;   /* 60px */

  --font-weight-regular: 400;
  --font-weight-medium:  500;
  --font-weight-semibold:600;
  --font-weight-bold:    700;
  --font-weight-extrabold:800;

  --line-height-tight:   1.2;
  --line-height-snug:    1.375;
  --line-height-normal:  1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose:   1.75;

  --letter-spacing-tight:-0.025em;
  --letter-spacing-normal:0em;
  --letter-spacing-wide:  0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest:0.1em;

  /* Spacing Scale (4px base) */
  --space-0:   0;
  --space-1:   0.25rem;   /* 4px */
  --space-2:   0.5rem;    /* 8px */
  --space-3:   0.75rem;   /* 12px */
  --space-4:   1rem;      /* 16px */
  --space-5:   1.25rem;   /* 20px */
  --space-6:   1.5rem;    /* 24px */
  --space-8:   2rem;      /* 32px */
  --space-10:  2.5rem;    /* 40px */
  --space-12:  3rem;      /* 48px */
  --space-14:  3.5rem;    /* 56px */
  --space-16:  4rem;      /* 64px */
  --space-20:  5rem;      /* 80px */
  --space-24:  6rem;      /* 96px */
  --space-32:  8rem;      /* 128px */

  /* Border Radius */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:   0 1px 2px 0 rgba(64, 78, 94, 0.05);
  --shadow-sm:   0 1px 3px 0 rgba(64, 78, 94, 0.10), 0 1px 2px -1px rgba(64, 78, 94, 0.10);
  --shadow-md:   0 4px 6px -1px rgba(64, 78, 94, 0.10), 0 2px 4px -2px rgba(64, 78, 94, 0.10);
  --shadow-lg:   0 10px 15px -3px rgba(64, 78, 94, 0.10), 0 4px 6px -4px rgba(64, 78, 94, 0.10);
  --shadow-xl:   0 20px 25px -5px rgba(64, 78, 94, 0.10), 0 8px 10px -6px rgba(64, 78, 94, 0.10);
  --shadow-2xl:  0 25px 50px -12px rgba(64, 78, 94, 0.25);
  --shadow-primary: 0 4px 14px 0 rgba(131, 189, 129, 0.35);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   200ms ease;
  --transition-slow:   300ms ease;
  --transition-slower: 500ms ease;

  /* Container */
  --container-sm:  640px;
  --container-md:  768px;
  --container-lg:  1024px;
  --container-xl:  1280px;
  --container-2xl: 1440px;

  /* Z-index */
  --z-dropdown:  1000;
  --z-sticky:    1020;
  --z-fixed:     1030;
  --z-overlay:   1040;
  --z-modal:     1050;
  --z-toast:     1060;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-800);
  background-color: var(--color-body-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

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

/* ─── 3. TYPOGRAPHY SCALE ────────────────────────────────────── */
.text-xs    { font-size: var(--font-size-xs); line-height: var(--line-height-normal); }
.text-sm    { font-size: var(--font-size-sm); line-height: var(--line-height-normal); }
.text-base  { font-size: var(--font-size-base); line-height: var(--line-height-relaxed); }
.text-lg    { font-size: var(--font-size-lg); line-height: var(--line-height-relaxed); }
.text-xl    { font-size: var(--font-size-xl); line-height: var(--line-height-snug); }
.text-2xl   { font-size: var(--font-size-2xl); line-height: var(--line-height-snug); }
.text-3xl   { font-size: var(--font-size-3xl); line-height: var(--line-height-tight); }
.text-4xl   { font-size: var(--font-size-4xl); line-height: var(--line-height-tight); }
.text-5xl   { font-size: var(--font-size-5xl); line-height: var(--line-height-tight); }
.text-6xl   { font-size: var(--font-size-6xl); line-height: var(--line-height-tight); }

.font-regular   { font-weight: var(--font-weight-regular); }
.font-medium    { font-weight: var(--font-weight-medium); }
.font-semibold  { font-weight: var(--font-weight-semibold); }
.font-bold      { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

/* Heading Styles */
h1, .h1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-dark);
}

h2, .h2 {
  font-size: clamp(var(--font-size-2xl), 3.5vw, var(--font-size-4xl));
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-dark);
}

h3, .h3 {
  font-size: clamp(var(--font-size-xl), 2.5vw, var(--font-size-3xl));
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  color: var(--color-dark);
}

h4, .h4 {
  font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-2xl));
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
  color: var(--color-dark);
}

h5, .h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  color: var(--color-dark);
}

h6, .h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  color: var(--color-dark);
}

p {
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-700);
}

.lead {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-600);
}

.caption {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-neutral-500);
}

/* ─── 4. LAYOUT SYSTEM ───────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container-sm  { max-width: var(--container-sm); }
.container-md  { max-width: var(--container-md); }
.container-lg  { max-width: var(--container-lg); }
.container-2xl { max-width: var(--container-2xl); }

.section {
  padding-block: var(--space-20);
}

.section-sm { padding-block: var(--space-12); }
.section-lg { padding-block: var(--space-32); }

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header .section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-primary-dark);
  background-color: var(--color-primary-50);
  border: 1px solid var(--color-primary-100);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header .section-desc {
  max-width: 640px;
  margin-inline: auto;
  font-size: var(--font-size-lg);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* Flex */
.flex       { display: flex; }
.flex-col   { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* ─── 5. BUTTON SYSTEM ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 48px;
  padding: 0 var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  letter-spacing: var(--letter-spacing-normal);
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #1a3a19;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #ffffff;
  box-shadow: 0 6px 20px 0 rgba(131, 189, 129, 0.45);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-primary);
}

.btn-dark {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-dark:hover {
  background-color: var(--color-dark-90);
  border-color: var(--color-dark-90);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
  background-color: var(--color-primary-50);
  transform: translateY(-1px);
}

.btn-outline-dark {
  background-color: transparent;
  border-color: var(--color-dark-20);
  color: var(--color-dark);
}

.btn-outline-dark:hover {
  border-color: var(--color-dark);
  background-color: var(--color-neutral-50);
}

.btn-whatsapp {
  background-color: #25D366;
  border-color: #25D366;
  color: var(--color-white);
  box-shadow: 0 4px 14px 0 rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover {
  background-color: #1ebe5a;
  border-color: #1ebe5a;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px 0 rgba(37, 211, 102, 0.45);
}

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

.btn-phone:hover {
  background-color: var(--color-dark-90);
  transform: translateY(-1px);
}

/* Button Sizes */
.btn-sm {
  height: 38px;
  padding: 0 var(--space-4);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
}

.btn-sm svg { width: 16px; height: 16px; }

.btn-lg {
  height: 56px;
  padding: 0 var(--space-8);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-xl);
}

.btn-lg svg { width: 22px; height: 22px; }

.btn-xl {
  height: 64px;
  padding: 0 var(--space-10);
  font-size: var(--font-size-xl);
  border-radius: var(--radius-xl);
}

/* ─── 6. CARD SYSTEM ─────────────────────────────────────────── */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-slow);
}

.card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-flat {
  background-color: var(--color-neutral-50);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.card-featured {
  background-color: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-primary);
  position: relative;
}

.card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  background-color: var(--color-primary-50);
}

.card-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
}

/* ─── 7. BADGE SYSTEM ────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-50);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-primary-100);
}

.badge-dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.badge-success {
  background-color: #dcfce7;
  color: var(--color-success);
  border: 1px solid #bbf7d0;
}

.badge-neutral {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-700);
  border: 1px solid var(--color-neutral-200);
}

/* ─── 8. FORM ELEMENTS ───────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-4);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-neutral-800);
  background-color: var(--color-white);
  border: 1.5px solid var(--color-neutral-300);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

.form-input:hover,
.form-select:hover {
  border-color: var(--color-dark-50);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(131, 189, 129, 0.2);
}

.form-textarea {
  height: auto;
  min-height: 120px;
  padding: var(--space-3) var(--space-4);
  resize: vertical;
}

/* ─── 9. ACCORDION ───────────────────────────────────────────── */
.accordion-item {
  border-bottom: 1px solid var(--color-neutral-200);
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
  gap: var(--space-4);
}

.accordion-trigger:hover {
  color: var(--color-primary-dark);
}

.accordion-trigger svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-primary);
}

.accordion-trigger[aria-expanded="true"] svg.accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow);
}

.accordion-content.open {
  max-height: 500px;
}

.accordion-body {
  padding-bottom: var(--space-5);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
}

/* ─── 10. TABLE SYSTEM ───────────────────────────────────────── */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-sm);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table thead tr {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.table thead th {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  white-space: nowrap;
}

.table tbody tr {
  border-bottom: 1px solid var(--color-neutral-100);
  transition: background-color var(--transition-fast);
}

.table tbody tr:last-child { border-bottom: none; }

.table tbody tr:hover {
  background-color: var(--color-primary-50);
}

.table tbody tr:nth-child(even) {
  background-color: var(--color-neutral-50);
}

.table tbody tr:nth-child(even):hover {
  background-color: var(--color-primary-50);
}

.table td {
  padding: var(--space-4) var(--space-5);
  color: var(--color-neutral-700);
  vertical-align: middle;
}

.table td:first-child {
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
}

.table-check {
  color: var(--color-primary-dark);
  font-weight: var(--font-weight-bold);
}

.table-cross {
  color: var(--color-neutral-400);
}

/* ─── 11. NAV / HEADER ───────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-neutral-200);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-icon svg {
  width: 22px;
  height: 22px;
  color: white;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.nav-logo-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  letter-spacing: var(--letter-spacing-tight);
}

.nav-logo-sub {
  font-size: var(--font-size-xs);
  color: var(--color-neutral-500);
  letter-spacing: var(--letter-spacing-wide);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-600);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-dark);
  background-color: var(--color-neutral-100);
}

.nav-link.active {
  color: var(--color-primary-dark);
  background-color: var(--color-primary-50);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-phone:hover {
  background-color: var(--color-neutral-100);
}

.nav-phone svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary-dark);
}

/* Mobile Menu Button */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  background: transparent;
  border: 1.5px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-burger:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-50);
}

.nav-burger span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: calc(100vh - 72px);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-neutral-200);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  z-index: var(--z-fixed);
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  box-shadow: var(--shadow-xl);
}

.mobile-nav.open { display: flex; }

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.mobile-nav-link:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-100);
  color: var(--color-primary-dark);
}

.mobile-nav-link svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.mobile-nav-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-neutral-200);
}

/* ─── 12. ICON SYSTEM ────────────────────────────────────────── */
.icon { display: inline-flex; align-items: center; justify-content: center; }
.icon-xs { width: 16px; height: 16px; }
.icon-sm { width: 20px; height: 20px; }
.icon-md { width: 24px; height: 24px; }
.icon-lg { width: 32px; height: 32px; }
.icon-xl { width: 48px; height: 48px; }
.icon-2xl { width: 64px; height: 64px; }

.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.icon-box-sm { width: 40px; height: 40px; }
.icon-box-md { width: 52px; height: 52px; }
.icon-box-lg { width: 64px; height: 64px; }
.icon-box-xl { width: 80px; height: 80px; }

.icon-box-primary {
  background-color: var(--color-primary-50);
  color: var(--color-primary-dark);
}

.icon-box-dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.icon-box-white {
  background-color: var(--color-white);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

/* ─── 13. DIVIDER ────────────────────────────────────────────── */
.divider {
  height: 1px;
  background-color: var(--color-neutral-200);
  border: none;
  margin-block: var(--space-8);
}

.divider-primary {
  height: 3px;
  width: 60px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

/* ─── 14. FLOATING CTA ───────────────────────────────────────── */
.floating-cta {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-fixed);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-end;
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  text-decoration: none;
}

.floating-btn:hover {
  transform: scale(1.1);
}

.floating-btn-whatsapp {
  background-color: #25D366;
  color: white;
}

.floating-btn-phone {
  background-color: var(--color-dark);
  color: white;
}

.floating-btn svg {
  width: 26px;
  height: 26px;
}

/* ─── 15. PROGRESS / STEP ────────────────────────────────────── */
.step-list {
  display: grid;
  gap: var(--space-6);
  counter-reset: step-counter;
}

.step-item {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  counter-increment: step-counter;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  line-height: 1;
}

.step-content h4 {
  margin-bottom: var(--space-1);
}

/* ─── 16. TRUST INDICATORS ───────────────────────────────────── */
.trust-bar {
  background-color: var(--color-neutral-50);
  border-top: 1px solid var(--color-neutral-200);
  border-bottom: 1px solid var(--color-neutral-200);
  padding-block: var(--space-6);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.trust-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-lg);
  background-color: var(--color-primary-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
}

.trust-icon svg { width: 22px; height: 22px; }

.trust-label {
  font-size: var(--font-size-xs);
  color: var(--color-neutral-500);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  margin-bottom: 2px;
}

.trust-value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  line-height: 1;
}

/* ─── 16b. SUREC GRID ────────────────────────────────────────── */
.surec-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}

/* ─── 17. GALLERY ────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  background-color: var(--color-primary-50);
  cursor: pointer;
  grid-column: span 1 !important;
  grid-row: span 1 !important;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slower);
}

.gallery-item:hover img { transform: scale(1.05); }

.gallery-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: var(--color-primary-dark);
  background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
}

.gallery-placeholder svg { width: 40px; height: 40px; opacity: 0.6; }

.gallery-item-span-2 { grid-column: span 2; }
.gallery-item-row-2  { grid-row: span 2; aspect-ratio: auto; }

.gallery-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 100%);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.01em;
  pointer-events: none;
}

/* ─── 18. COLOR SWATCH ───────────────────────────────────────── */
.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.color-swatch {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-neutral-200);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.color-swatch:hover {
  transform: scale(1.2);
  border-color: var(--color-dark);
}

.color-swatch[data-color="beyaz"] { background: #FFFFFF; border-color: #e5e7eb; }
.color-swatch[data-color="krem"]  { background: #F5F0E8; }
.color-swatch[data-color="gri"]   { background: #9E9E9E; }
.color-swatch[data-color="vizon"] { background: #C4A882; }
.color-swatch[data-color="kahverengi"] { background: #795548; }
.color-swatch[data-color="gumus"]  { background: #B0BEC5; }
.color-swatch[data-color="bronz"]  { background: #8D6E63; }
.color-swatch[data-color="siyah"]  { background: #212121; }
.color-swatch[data-color="antrasit"] { background: #37474F; }

/* ─── 19. FOOTER ─────────────────────────────────────────────── */
.site-footer {
  background-color: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand { display: flex; flex-direction: column; }

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo-icon svg { width: 22px; height: 22px; color: white; }

.footer-logo-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: white;
}

.footer-desc {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
  color: rgba(255, 255, 255, 0.65);
}

.footer-col-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: white;
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-link:hover { color: var(--color-primary-light); }

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: var(--space-3);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ─── 20. UTILITIES ──────────────────────────────────────────── */
.text-primary   { color: var(--color-primary-dark); }
.text-dark      { color: var(--color-dark); }
.text-muted     { color: var(--color-neutral-500); }
.text-center    { text-align: center; }
.text-left      { text-align: left; }
.text-right     { text-align: right; }

.bg-primary-50  { background-color: var(--color-primary-50); }
.bg-neutral-50  { background-color: var(--color-neutral-50); }
.bg-white       { background-color: var(--color-white); }
.bg-dark        { background-color: var(--color-dark); }

.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;
}

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

/* ─── 21. EXTENDED COMPONENTS ───────────────────────────────── */

/* Cat header — ürün kategorisi başlık satırı */
.cat-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-primary-100);
}

/* Color Palette Section — profil renkleri */
.color-palette-section {
  background: var(--color-white);
  border: 1.5px solid var(--color-primary-100);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin-top: var(--space-4);
}

.color-palette-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.color-palette-grid {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: var(--space-3);
}

.palette-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.palette-swatch {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 2px solid transparent;
}

.palette-item:hover .palette-swatch {
  transform: translateY(-4px) scale(1.06);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.palette-tooltip {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-dark);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 10;
}

.palette-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-dark);
}

.palette-item:hover .palette-tooltip { opacity: 1; }

.palette-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-neutral-600);
  text-align: center;
  line-height: 1.2;
}

/* District Grid */
.district-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.district-item {
  padding: var(--space-3) var(--space-4);
  background: var(--color-neutral-50);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  cursor: default;
}

.district-item:hover,
.district-item--hover {
  border-color: var(--color-primary) !important;
  background: var(--color-primary-50) !important;
}

.district-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  margin-bottom: 2px;
}

.district-products {
  font-size: 10px;
  color: var(--color-neutral-500);
  line-height: 1.4;
}

/* ─── 21b. COMPONENT GRIDS ────────────────────────────────────── */

/* Hero 2-col grid */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

/* Trust bar 6-col */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
  align-items: center;
}

/* Generic section grids used with inline styles — override via class helpers */
.grid-cols-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-cols-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.grid-cols-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-4); }

/* ─── 22. RESPONSIVE ─────────────────────────────────────────── */

/* ── 1024px tablet ── */
@media (max-width: 1024px) {
  .footer-grid         { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .grid-4              { grid-template-columns: repeat(2, 1fr); }
  .grid-6              { grid-template-columns: repeat(3, 1fr); }
  .grid-cols-4         { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-5         { grid-template-columns: repeat(3, 1fr); }
  .trust-grid          { grid-template-columns: repeat(3, 1fr); }

  /* color palette — tablet */
  .color-palette-grid  { grid-template-columns: repeat(5, 1fr); gap: var(--space-4); }

  /* sections-part2 4-col grid'ler tablet'te 2 col */
  [style*="grid-template-columns:repeat(4,1fr)"] { grid-template-columns: repeat(2, 1fr) !important; }
}

/* ── 768px mobil ── */
@media (max-width: 768px) {
  .container  { padding-inline: var(--space-4); }
  .section    { padding-block: var(--space-10); }
  .section-sm { padding-block: var(--space-6); }
  .section-lg { padding-block: var(--space-12); }

  /* ── Nav ── */
  .nav-links        { display: none; }
  .nav-phone-text   { display: none; }
  .nav-burger       { display: flex; }
  .nav-actions .btn { display: none; }

  .mobile-nav {
    height: calc(100vh - 72px);
  }

  /* ── Hero ── */
  .hero { padding-block: var(--space-10); }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .hero-grid > div:last-child { display: block; }

  /* Hero stats row */
  [style*="display:flex;gap:var(--space-8);margin-top:var(--space-10)"] {
    flex-wrap: wrap;
    gap: var(--space-5) !important;
    justify-content: space-between;
  }

  /* ── Trust bar ── */
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }

  /* ── Tüm named grid class'lar ── */
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-cols-2, .grid-cols-3, .grid-cols-4, .grid-cols-5 { grid-template-columns: 1fr; }

  /* ── cat-header — ürün başlık satırı stack yap ── */
  .cat-header { flex-direction: column; }

  /* ── Color palette — mobilde 3 kolon ── */
  .color-palette-grid  { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
  .color-palette-header { flex-direction: column; gap: var(--space-2); }
  .palette-tooltip     { display: none; }

  /* ── District grid — 2 kolon korunur, üst wrapper 1 kolon ── */
  .district-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-2); }

  /* ── Inline grid overrides ── */
  /* 2-col */
  [style*="grid-template-columns:1fr 1fr"]          { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns: 1fr 1fr"]         { grid-template-columns: 1fr !important; }
  /* repeat(2) */
  [style*="grid-template-columns:repeat(2,1fr)"]    { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns:repeat(2, 1fr)"]   { grid-template-columns: 1fr !important; }
  /* repeat(3) */
  [style*="grid-template-columns:repeat(3,1fr)"]    { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns:repeat(3, 1fr)"]   { grid-template-columns: 1fr !important; }
  /* repeat(4) → 2 kolon */
  [style*="grid-template-columns:repeat(4,1fr)"]    { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="grid-template-columns:repeat(4, 1fr)"]   { grid-template-columns: repeat(2, 1fr) !important; }
  /* repeat(5,6) */
  [style*="grid-template-columns:repeat(5,1fr)"]    { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns:repeat(6,1fr)"]    { grid-template-columns: 1fr !important; }
  /* Sections-part2 process (5-col gap:0) */
  [style*="grid-template-columns:repeat(5,1fr);gap:0"] { grid-template-columns: 1fr !important; }
  /* 2-col hizmet bölgesi dış wrapper */
  [style*="grid-template-columns:1fr 1fr;gap:var(--space-8)"] { grid-template-columns: 1fr !important; }
  /* Istanbul rehberi 2-col */
  [style*="grid-template-columns:1fr 1fr;gap:var(--space-16)"] { grid-template-columns: 1fr !important; }

  /* ── Flex satır override ── */
  /* Ürün başlık satırı badge'ları — alt alta al */
  [style*="margin-left:auto;display:flex;flex-wrap:wrap"] {
    margin-left: 0 !important;
    justify-content: flex-start !important;
    max-width: 100% !important;
  }

  /* ── Surec ── */
  .surec-grid { grid-template-columns: repeat(3, 1fr); }

  /* ── Gallery ── */
  .gallery-grid        { grid-template-columns: repeat(2, 1fr); }
  .gallery-item-span-2 { grid-column: span 1; }
  .gallery-item-row-2  { grid-row: span 1; aspect-ratio: 4/3; }

  /* ── Footer ── */
  .footer-grid   { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; text-align: center; }

  /* ── Floating CTA ── */
  .floating-cta  { bottom: var(--space-4); right: var(--space-4); }

  /* ── Section header desc ── */
  .section-desc  { font-size: var(--font-size-base); }

  /* ── Karşılaştırma tablosu yatay scroll ── */
  .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* ── Teklif section 3-col ── */
  [style*="grid-template-columns:repeat(3,1fr);gap:var(--space-6);margin-bottom:var(--space-12)"] {
    grid-template-columns: 1fr !important;
  }
}

/* ── 480px küçük mobil ── */
@media (max-width: 480px) {
  .surec-grid   { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: 1fr; }
  .trust-grid   { grid-template-columns: repeat(2, 1fr); }

  /* Color palette 3 kolon koru, swatch yeterince büyük */
  .color-palette-grid  { grid-template-columns: repeat(3, 1fr); gap: var(--space-2); }
  .color-palette-section { padding: var(--space-5); }

  /* District grid 480px'de 1 kolon */
  .district-grid { grid-template-columns: 1fr; }

  .btn-xl {
    height: 52px;
    padding: 0 var(--space-5);
    font-size: var(--font-size-base);
    width: 100%;
    justify-content: center;
  }

  /* repeat(4) 480'de 1 kolon */
  [style*="grid-template-columns:repeat(4,1fr)"]  { grid-template-columns: 1fr !important; }
  [style*="grid-template-columns:repeat(4, 1fr)"] { grid-template-columns: 1fr !important; }

  h1, .h1 { font-size: clamp(1.75rem, 8vw, 2.75rem); }
  h2, .h2 { font-size: clamp(1.25rem, 6vw, 2rem); }

  /* Buton grubu tam genişlik yap */
  [style*="display:flex;flex-wrap:wrap;gap:var(--space-3)"] {
    flex-direction: column;
  }
  [style*="display:flex;gap:var(--space-4);justify-content:center;flex-wrap:wrap"] {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ─── 22. PRINT ──────────────────────────────────────────────── */
@media print {
  .site-header, .floating-cta, .mobile-nav { display: none; }
  body { color: black; background: white; }
  .section { padding-block: var(--space-8); }
}