:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --color-border: #e2e8f0;
  --color-primary: #0e7490;
  --color-primary-dark: #0c4a6e;
  --color-primary-light: #e0f2fe;
  --color-accent: #b8860b;
  --color-whatsapp: #25d366;
  --color-success: #059669;
  --color-error: #dc2626;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --font: "DM Sans", system-ui, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.75rem); }
p { margin: 0 0 1rem; }
.container { width: min(1140px, 92vw); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.brand-morkoclar { height: 36px; width: auto; border-radius: 6px; }
.brand-kvk { height: 32px; width: auto; }
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem 1rem;
  flex-wrap: wrap;
}
.site-nav a:not(.btn) {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
}
.site-nav a:not(.btn).active,
.site-nav a:not(.btn):hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1.1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: 0.2s ease;
  font-family: inherit;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  border-color: transparent;
}
.btn-primary:hover { filter: brightness(1.08); color: #fff; }
.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-whatsapp { background: var(--color-whatsapp); color: #fff; }
.btn-whatsapp:hover { filter: brightness(1.05); color: #fff; }
.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.875rem; }
.btn-lg { padding: 0.75rem 1.35rem; font-size: 1rem; }
.btn-block { width: 100%; }

/* Hero */
.hero {
  padding: 3rem 0 2.5rem;
  background: linear-gradient(180deg, #fff 0%, var(--color-bg) 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}
.hero h1 em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-primary-dark);
}
.lead { font-size: 1.1rem; color: var(--color-muted); max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.hero-stats {
  display: grid;
  gap: 0.75rem;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}
.stat-card strong {
  display: block;
  font-size: 2rem;
  color: var(--color-primary-dark);
}
.stat-card span { color: var(--color-muted); font-size: 0.9rem; }

/* Sections */
.section { padding: 3rem 0; }
.section-muted { background: #fff; border-block: 1px solid var(--color-border); }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.5rem;
}
.link-arrow { font-weight: 600; }
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.product-card-image {
  position: relative;
  aspect-ratio: 4/3; /* 4:3 oranında dikdörtgen bir kutu */
  background: #f1f5f9;
  overflow: hidden;
}
.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* Görseli kırpmaz, oranını bozmadan küçültüp sığdırır */
  background: #ffffff;  /* İnce/uzun telefonların sağında solunda kalacak boşluğu beyaz yapar */
}
.badge {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  background: var(--color-primary-dark);
  color: #fff;
}
.badge-refurb { background: var(--color-accent); left: auto; right: 10px; }
.badge-featured { background: var(--color-primary); }
.product-card-body { padding: 1rem; flex: 1; display: flex; flex-direction: column; gap: 0.35rem; }
.product-meta { font-size: 0.8rem; color: var(--color-muted); }
.product-card h3 { font-size: 1rem; margin: 0; }
.product-card h3 a { color: inherit; }
.product-price { font-weight: 700; color: var(--color-primary-dark); margin: 0; }
.product-spec { font-size: 0.85rem; color: var(--color-muted); margin: 0; }
.product-card .btn { margin-top: auto; }

.category-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.category-tile {
  display: block;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: inherit;
  transition: 0.2s;
}
.category-tile:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.category-tile h3 { margin-bottom: 0.35rem; }
.category-tile p { margin: 0; font-size: 0.9rem; color: var(--color-muted); }

.services-preview-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}
.check-list { padding-left: 1.2rem; margin: 1rem 0; }
.check-list li { margin-bottom: 0.35rem; }
.cta-card {
  background: linear-gradient(145deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
}
.cta-card h3, .cta-card p { color: #fff; }
.cta-card .btn-outline { border-color: rgba(255,255,255,0.5); color: #fff; }
.cta-card .btn-outline:hover { background: rgba(255,255,255,0.15); }

/* Page header */
.page-header {
  padding: 2.5rem 0 1.5rem;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}
.page-header p { color: var(--color-muted); max-width: 60ch; margin-bottom: 0; }

/* Catalog */
.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  align-items: start;
}
.catalog-filters {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: sticky;
  top: calc(var(--header-h) + 1rem);
}
.filter-form label { display: block; margin-bottom: 0.75rem; font-size: 0.9rem; font-weight: 500; }
.filter-form input[type="search"],
.filter-form input[type="text"] {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font: inherit;
}
fieldset { border: none; padding: 0; margin: 0 0 1rem; }
legend { font-weight: 600; margin-bottom: 0.5rem; }
.radio-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
  margin-bottom: 0.35rem;
  cursor: pointer;
}
.sub-filters { margin-left: 0.75rem; padding-left: 0.75rem; border-left: 2px solid var(--color-primary-light); }
.results-count { color: var(--color-muted); font-size: 0.9rem; }

/* Product detail */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
.gallery-main {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  aspect-ratio: 1;
  object-fit: contain; /* cover yerine contain yazdık */
  background: #ffffff; /* Sığmayan yerlerde arkada kalacak temiz beyaz arka plan */
}
.gallery-thumbs {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
.gallery-thumb {
  border: 2px solid transparent;
  border-radius: 8px;
  padding: 0;
  background: none;
  cursor: pointer;
  width: 72px;
  height: 72px;
  overflow: hidden;
}
.gallery-thumb.active { border-color: var(--color-primary); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.breadcrumb { font-size: 0.85rem; color: var(--color-muted); margin-bottom: 0.75rem; }
.product-subtitle { color: var(--color-muted); }
.product-price-lg { font-size: 1.75rem; font-weight: 700; color: var(--color-primary-dark); }
.product-actions-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.25rem 0; }
.text-muted { color: var(--color-muted); font-size: 0.9rem; }
.spec-table-wrap { margin-top: 1.5rem; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.spec-table th,
.spec-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}
.spec-table th { width: 40%; color: var(--color-muted); font-weight: 500; }
.extra-notes { margin-top: 1rem; padding: 1rem; background: var(--color-primary-light); border-radius: var(--radius); }

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.service-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.form-section {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
  align-items: start;
}
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.form-stack label { display: block; margin-bottom: 1rem; font-weight: 500; font-size: 0.9rem; }
.form-stack input,
.form-stack select,
.form-stack textarea {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font: inherit;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-note { font-size: 0.8rem; color: var(--color-muted); }

/* Footer */
.site-footer {
  margin-top: 3rem;
  background: #fff;
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
}
.footer-grid h4 { font-size: 0.9rem; margin-bottom: 0.75rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 0.35rem; }
.footer-bottom {
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-muted);
}
.footer-bottom p { margin: 0; }

.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--color-muted);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px dashed var(--color-border);
}

.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.alert-success { background: #d1fae5; color: #065f46; }
.alert-error { background: #fee2e2; color: #991b1b; }

/* Install */
.install-page, .admin-auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: var(--color-bg);
}
.install-card, .auth-card {
  width: min(480px, 100%);
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}
.auth-card { text-align: center; }
.auth-card h1 { margin-top: 1rem; }
.auth-footer { margin-top: 1.5rem; font-size: 0.9rem; }

/* Admin */
.admin-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}
.admin-sidebar {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}
.admin-sidebar a {
  color: rgba(255,255,255,0.85);
  display: block;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  margin-bottom: 0.15rem;
  font-size: 0.9rem;
}
.admin-sidebar a:hover,
.admin-sidebar a.active { background: rgba(255,255,255,0.12); color: #fff; }
.admin-logo { margin-bottom: 1.5rem; display: block; }
.admin-user {
  margin-top: auto;
  font-size: 0.8rem;
  opacity: 0.7;
  padding-top: 1rem;
}
.admin-main {
  padding: 1.5rem 2rem;
  overflow-x: auto;
}
.admin-stats {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}
.admin-stat { min-width: 140px; }
.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.admin-table th,
.admin-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.admin-table th { background: #f8fafc; font-weight: 600; }
.thumb-cell img { border-radius: 8px; object-fit: cover; }
.actions-cell { white-space: nowrap; }
.inline-form { display: inline; }
.link-danger {
  background: none;
  border: none;
  color: var(--color-error);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  padding: 0;
}
.admin-head-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.admin-form fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.admin-form legend { font-weight: 600; padding: 0 0.35rem; }
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
}
.checkbox-row input { width: auto; margin: 0; }
.image-preview-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.image-preview-item {
  text-align: center;
  font-size: 0.8rem;
}
.image-preview-item img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}
.admin-category-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.category-list { list-style: none; padding: 0; }
.category-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--color-border);
}
.inline-add-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.inline-add-form input { flex: 1; padding: 0.5rem; border-radius: 8px; border: 1px solid var(--color-border); }
.filter-tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.filter-tabs a {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.9rem;
}
.filter-tabs a.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.request-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.request-card header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.request-message { background: #f8fafc; padding: 0.75rem; border-radius: 8px; }
.status-form select { margin-top: 0.5rem; padding: 0.35rem; }

@media (max-width: 900px) {
  .hero-grid,
  .services-preview-grid,
  .product-detail-grid,
  .form-section,
  .catalog-layout,
  .footer-grid { grid-template-columns: 1fr; }
  .catalog-filters { position: static; }
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: flex; }
  .header-inner { position: relative; flex-wrap: wrap; }
  .form-row { grid-template-columns: 1fr; }
  .admin-body { grid-template-columns: 1fr; }
  .admin-sidebar { flex-direction: row; flex-wrap: wrap; gap: 0.25rem; }
  .admin-sidebar nav { display: flex; flex-wrap: wrap; width: 100%; }
  .admin-user { display: none; }
}