/* ============================================
   AKRODENT — Tasarım Sistemi
   Mevcut site kimliğine yakın: koyu lacivert + beyaz,
   dental/endüstriyel teknik karakter
   ============================================ */

:root {
  /* Renkler */
  --navy-950: #0b1320;
  --navy-900: #0f1b30;
  --navy-800: #142342;
  --navy-700: #1c2f56;
  --blue-500: #2f6fed;
  --blue-400: #5b8df5;
  --white: #ffffff;
  --offwhite: #f5f7fb;
  --gray-100: #e7eaf0;
  --gray-300: #b9c1d1;
  --gray-500: #6b7488;
  --gray-700: #3a4150;
  --success: #1f9d6c;
  --danger: #d8434a;

  /* Tipografi */
  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;

  /* Boşluk birimi */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
  --space-7: 96px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-card: 0 8px 30px rgba(11, 19, 32, 0.08);
  --shadow-elevated: 0 20px 60px rgba(11, 19, 32, 0.18);

  --container-width: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--navy-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy-950);
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Focus erişilebilirlik */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--blue-400);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============== HEADER ============== */
.site-header {
  background: var(--navy-950);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.logo img {
  height: 42px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.main-nav ul {
  display: flex;
  gap: var(--space-4);
}

.main-nav a {
  color: var(--gray-100);
  font-weight: 500;
  font-size: 0.95rem;
  padding: var(--space-2) 0;
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--blue-400);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--blue-500);
  color: var(--white);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(47, 111, 237, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--gray-300);
  color: var(--navy-900);
}

.btn-outline:hover {
  border-color: var(--navy-900);
}

.lang-switch {
  display: flex;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--gray-300);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ============== HERO ============== */
.hero {
  background: linear-gradient(135deg, var(--navy-950) 0%, var(--navy-800) 100%);
  color: var(--white);
  padding: var(--space-7) 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue-400);
  margin-bottom: var(--space-3);
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.hero p {
  color: var(--gray-300);
  font-size: 1.1rem;
  max-width: 540px;
  margin-bottom: var(--space-5);
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
}

.hero-visual {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

/* ============== KATEGORİ VİTRİNİ ============== */
.section {
  padding: var(--space-7) 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-5);
  gap: var(--space-4);
}

.section-head p {
  color: var(--gray-500);
  max-width: 560px;
}

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

.category-card {
  background: var(--offwhite);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid var(--gray-100);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.category-card img {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-3);
}

.category-card h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-2);
}

.category-card span {
  color: var(--blue-500);
  font-weight: 600;
  font-size: 0.85rem;
}

/* ============== ÜRÜN KARTLARI ============== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.product-card {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.product-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.product-card-img {
  aspect-ratio: 1 / 1;
  background: var(--offwhite);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.product-card-body {
  padding: var(--space-4);
}

.product-card-code {
  color: var(--blue-500);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin: var(--space-1) 0 var(--space-2);
  color: var(--navy-950);
}

.product-card-desc {
  color: var(--gray-500);
  font-size: 0.9rem;
}

/* ============== ÜRÜN DETAY SAYFASI ============== */
.product-detail {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-6);
  padding: var(--space-6) 0;
}

.product-gallery-main {
  background: var(--offwhite);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1/1;
}

.product-breadcrumb {
  color: var(--gray-500);
  font-size: 0.85rem;
  margin-bottom: var(--space-3);
}

.product-breadcrumb a:hover {
  color: var(--blue-500);
}

.product-title-block .code {
  color: var(--blue-500);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.product-title-block h1 {
  margin: var(--space-2) 0 var(--space-4);
  font-size: 2rem;
}

.feature-list {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

.feature-list li {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  color: var(--navy-900);
}

.feature-list li::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: 0.92rem;
}

.spec-table tr {
  border-bottom: 1px solid var(--gray-100);
}

.spec-table td {
  padding: var(--space-2) 0;
}

.spec-table td:first-child {
  color: var(--gray-500);
  width: 45%;
}

.spec-table td:last-child {
  font-weight: 600;
  color: var(--navy-900);
}

.packaging-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.packaging-tags span {
  background: var(--offwhite);
  border: 1px solid var(--gray-100);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy-800);
}

/* ============== "FOR PROFESSIONAL" BANNER ============== */
.pro-banner {
  background: var(--navy-950);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  margin: var(--space-6) 0;
}

.pro-banner h2 {
  color: var(--white);
}

.pro-banner p {
  color: var(--gray-300);
}

/* ============== KURUMSAL / HAKKIMIZDA ============== */
.page-banner {
  background: var(--navy-950);
  color: var(--white);
  padding: var(--space-6) 0 var(--space-5);
}

.page-banner .breadcrumb {
  color: var(--gray-300);
  font-size: 0.85rem;
  margin-bottom: var(--space-2);
}

.content-block {
  max-width: 760px;
  padding: var(--space-6) 0;
}

.content-block p {
  margin-bottom: var(--space-3);
  color: var(--gray-700);
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.mv-card {
  background: var(--offwhite);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

/* ============== İLETİŞİM ============== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.branch-card {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
}

.branch-card h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-2);
}

.branch-card p {
  color: var(--gray-500);
  font-size: 0.9rem;
}

.contact-form label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-1);
  margin-top: var(--space-3);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-100);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* ============== FOOTER ============== */
.site-footer {
  background: var(--navy-950);
  color: var(--gray-300);
  padding-top: var(--space-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-5);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-grid h4 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
}

.footer-grid ul li {
  margin-bottom: var(--space-2);
}

.footer-grid ul a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) 0;
  font-size: 0.85rem;
}

.social-icons {
  display: flex;
  gap: var(--space-2);
}

.social-icons a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-icons a:hover {
  background: var(--blue-500);
}

/* ============== RESPONSIVE ============== */
@media (max-width: 960px) {
  .hero-grid,
  .product-detail,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .mission-vision-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .main-nav { display: none; }
  .mobile-toggle { display: block; }
  .header-actions .btn-outline { display: none; }
  .category-grid,
  .product-grid {
    grid-template-columns: 1fr;
  }
  .pro-banner {
    flex-direction: column;
    text-align: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }
}