/* ==========================================================================
   YDigitalCommerce Premium Design System
   ========================================================================== */

:root {
  /* Colors */
  --color-primary: #111827;
  --color-secondary: #2563EB;
  --color-success: #22C55E;
  --color-danger: #EF4444;
  --color-warning: #F59E0B;
  
  --color-bg: #FFFFFF;
  --color-surface: #F8FAFC;
  --color-border: #E5E7EB;
  
  --color-text: #111827;
  --color-text-muted: #6B7280;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-weight-regular: 400;
  --font-weight-button: 600;
  --font-weight-heading: 700;

  /* Border Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-btn: 12px;
  --radius-card: 16px;
  --radius-pill: 9999px;

  /* Spacing (8px system) */
  --spacing-1: 8px;
  --spacing-2: 16px;
  --spacing-3: 24px;
  --spacing-4: 32px;
  --spacing-5: 40px;
  --spacing-6: 48px;
  --spacing-8: 64px;
  --spacing-12: 96px;

  /* Shadows (Soft & Premium) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.08);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Overrides */
body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-heading);
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
  letter-spacing: -0.02em;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-primary);
}

/* Layout */
.container, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl {
  max-width: 1440px;
  padding-left: var(--spacing-3);
  padding-right: var(--spacing-3);
}

.content-wrapper {
  max-width: 1320px;
  margin: 0 auto;
}

/* Section Spacing */
.section-padding {
  padding-top: var(--spacing-8);
  padding-bottom: var(--spacing-8);
}
@media (min-width: 992px) {
  .section-padding {
    padding-top: var(--spacing-12);
    padding-bottom: var(--spacing-12);
  }
}

/* Buttons */
.btn {
  font-weight: var(--font-weight-button);
  border-radius: var(--radius-btn);
  padding: 12px 24px;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover, .btn-primary:focus {
  background-color: #000000;
  color: var(--color-bg);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-bg);
}

.btn-secondary:hover {
  background-color: #1D4ED8;
  color: var(--color-bg);
  box-shadow: var(--shadow-md);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-outline-primary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Form Inputs */
.form-control, .form-select {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: all var(--transition-normal);
  font-size: 0.95rem;
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  outline: none;
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

/* Cards */
.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background-color: var(--color-bg);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.premium-hover-card {
  transition: all var(--transition-slow);
}
.premium-hover-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: transparent;
}

/* Badges */
.badge {
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}
.badge-danger { background-color: var(--color-danger); color: white; }
.badge-success { background-color: var(--color-success); color: white; }
.badge-warning { background-color: var(--color-warning); color: #000; }
.badge-dark { background-color: var(--color-primary); color: white; }

/* Utilities */
.text-muted { color: var(--color-text-muted) !important; }
.bg-surface { background-color: var(--color-surface) !important; }
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }

/* Animations & Micro-Interactions */
.animate-fade-in {
  animation: fadeIn var(--transition-slow) forwards;
}

.animate-slide-up {
  animation: slideUp var(--transition-slow) forwards;
}

.hover-lift {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Skeleton Loading (Performance & Polish) */
.skeleton {
  background: #e2e5e7;
  background-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0.5),
    rgba(255, 255, 255, 0)
  );
  background-size: 40px 100%;
  background-repeat: no-repeat;
  background-position: left -40px top 0;
  animation: shine 1s ease-infinite;
}

@keyframes shine {
  to {
    background-position: right -40px top 0;
  }
}

/* Accessibility */
:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.5); /* Primary blue focus ring */
  outline-offset: 2px;
}

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-to-content:focus {
  top: 0;
}

/* Premium Header */
.premium-header {
  position: sticky;
  top: 0;
  z-index: 1020;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.premium-header.header-scrolled {
  box-shadow: var(--shadow-sm);
}

.premium-nav-link {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-2);
  transition: color var(--transition-normal);
}
.premium-nav-link:hover {
  color: var(--color-secondary);
}

/* Icon Buttons */
.btn-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  transition: all var(--transition-normal);
  color: var(--color-text);
  background: transparent;
  border: none;
}
.btn-icon:hover {
  background: var(--color-surface);
  color: var(--color-primary);
}

/* Mobile Bottom Nav */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  z-index: 1030;
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -4px 10px rgba(0,0,0,0.03);
}

@media (max-width: 991px) {
  .mobile-bottom-nav {
    display: flex;
    justify-content: space-around;
    padding-top: 12px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
  }
  
  .desktop-only {
    display: none !important;
  }
  
  body {
    padding-bottom: 80px; /* Space for bottom nav */
  }
}

.nav-item-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  gap: 4px;
}
.nav-item-bottom.active {
  color: var(--color-primary);
}
.nav-item-bottom i {
  stroke-width: 2px;
}

/* Ozel bir tema kendi mobil alt menusunu eklerse cekirdek menu gizlenir (iki bar ust uste binmesin). */
body:has(.mobile-bottom-bar) .mobile-bottom-nav { display: none !important; }
/* Dar ekranda uzun magaza adi baslikta ikonlari ekran disina itmesin */
@media (max-width: 575.98px) {
  .navbar-brand, .ydc-brand, header .navbar-brand span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}
/* Ic ice container: mobilde cift kenar boslugu olusmasin */
.container .container.home-container, main.container .container { padding-left: 0; padding-right: 0; max-width: none; }

/* ---------- Urun sayfasi: kargo / iade / taksit satiri ---------- */
.ydc-buyinfo { list-style: none; margin: 0 0 1.25rem; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; font-size: .875rem; color: #4b5563; }
.ydc-buyinfo__item { display: inline-flex; align-items: center; gap: .4rem; }
.ydc-buyinfo__item svg, .ydc-buyinfo__item i { width: 17px; height: 17px; flex-shrink: 0; color: #111827; }
.ydc-buyinfo__item strong { color: #111827; font-weight: 600; }
.ydc-buyinfo__item small { color: #6b7280; }

/* ---------- Urun sayfasi: gozluk olculeri cizimi ---------- */
.ydc-frame { margin: 0 0 1.5rem; padding: 1rem 1rem .85rem; border: 1px solid #e5e7eb; border-radius: 12px; background: #fff; color: #111827; }
.ydc-frame__title { display: flex; align-items: center; gap: .45rem; font-weight: 600; font-size: .95rem; margin-bottom: .5rem; }
.ydc-frame__title svg, .ydc-frame__title i { width: 18px; height: 18px; }
.ydc-frame__svg { display: block; width: 100%; max-width: 380px; height: auto; margin: 0 auto; color: #111827; }
.ydc-frame__dim { color: #6b7280; }
.ydc-frame__label { font-weight: 600; font-variant-numeric: tabular-nums; }
.ydc-frame__legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: .35rem 1.25rem; margin: .75rem 0 0; font-size: .85rem; }
.ydc-frame__legend div { display: flex; justify-content: space-between; gap: .5rem; border-bottom: 1px dashed #e5e7eb; padding-bottom: .25rem; }
.ydc-frame__legend dt { font-weight: 400; color: #6b7280; }
.ydc-frame__legend dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.ydc-frame__tip { display: flex; align-items: flex-start; gap: .45rem; margin: .75rem 0 0; font-size: .8rem; color: #6b7280; line-height: 1.45; }
.ydc-frame__tip svg, .ydc-frame__tip i { width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; color: #b45309; }

/* ---------- Urun sayfasi: mobilde alttan beliren "Sepete ekle" cubugu ---------- */
.ydc-buybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1035;
  display: flex; align-items: center; gap: .75rem; padding: .6rem max(12px, env(safe-area-inset-right)) calc(.6rem + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  background: #fff; border-top: 1px solid #e5e7eb; box-shadow: 0 -8px 24px rgba(0, 0, 0, .08);
  transform: translateY(110%); transition: transform .25s ease;
}
.ydc-buybar[hidden] { display: none; }
.ydc-buybar.is-visible { transform: translateY(0); }
.ydc-buybar__img { width: 44px; height: 44px; object-fit: contain; border-radius: 8px; background: #f5f5f5; flex-shrink: 0; }
.ydc-buybar__info { display: flex; flex-direction: column; min-width: 0; flex: 1; line-height: 1.25; }
.ydc-buybar__name { font-size: .8rem; color: #4b5563; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ydc-buybar__price { font-weight: 700; font-size: 1rem; color: #111827; font-variant-numeric: tabular-nums; }
.ydc-buybar__btn {
  flex-shrink: 0; border: 0; border-radius: 999px; padding: .7rem 1.25rem; min-height: 44px;
  background: #111827; color: #fff; font-weight: 600; font-size: .95rem;
}
.ydc-buybar__btn:disabled { background: #d1d5db; color: #6b7280; }
.ydc-buybar__btn:focus-visible { outline: 3px solid #93c5fd; outline-offset: 2px; }
@media (min-width: 992px) { .ydc-buybar { display: none !important; } }
@media (prefers-reduced-motion: reduce) { .ydc-buybar { transition: none; } }
/* Cubuk acikken sayfanin en alti (paylas, yorumlar) cubugun altinda kalmasin */
@media (max-width: 991.98px) { body.ydc-has-buybar { padding-bottom: 72px; } }