/* ==========================================================================
   ABK Mühendislik - Dark & Light Theme System
   UI-UX Pro Max Standartları | Responsive, Erişilebilir (WCAG AAA/AA)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Theme Variables
   -------------------------------------------------------------------------- */
:root {
  /* Default: Dark Theme */
  --bg-dark: #0a0b0d;
  --card-bg: #15181c;
  --card-elevated: #1c2026;
  --nav-bg: rgba(10, 11, 13, 0.85);
  --nav-scrolled: rgba(10, 11, 13, 0.95);
  --text-main: #ffffff;
  --text-muted: #a0aec0;
  --text-subtle: #718096;
  --accent-glow: rgba(255, 133, 0, 0.15);
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --input-bg: rgba(255, 255, 255, 0.04);
  --modal-bg: #15181c;
  --modal-overlay: rgba(0, 0, 0, 0.85);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 20px 45px rgba(0, 0, 0, 0.55);
  --footer-bg: #07080a;
  --footer-border: rgba(255, 255, 255, 0.08);
  --footer-heading: #ffffff;
  --footer-text: #a0aec0;
  --toggle-track: rgba(255, 255, 255, 0.1);
  --toggle-thumb: #ff8500;
  --toggle-icon: #ffffff;
}

[data-theme="light"] {
  /* Light Theme - Ultra crisp Slate-50 palette */
  --bg-dark: #f8fafc;
  --card-bg: #ffffff;
  --card-elevated: #f1f5f9;
  --nav-bg: rgba(255, 255, 255, 0.88);
  --nav-scrolled: rgba(255, 255, 255, 0.96);
  --text-main: #0f172a;      /* 13.5:1 contrast against #ffffff */
  --text-muted: #475569;     /* 5.2:1 contrast against #ffffff */
  --text-subtle: #64748b;
  --accent-glow: rgba(255, 133, 0, 0.16);
  --glass: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(15, 23, 42, 0.08);
  --border-subtle: #e2e8f0;
  --input-bg: #ffffff;
  --modal-bg: #ffffff;
  --modal-overlay: rgba(15, 23, 42, 0.65);
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 16px 36px rgba(15, 23, 42, 0.12);
  --footer-bg: #f1f5f9;
  --footer-border: #e2e8f0;
  --footer-heading: #0f172a;
  --footer-text: #475569;
  --toggle-track: #e2e8f0;
  --toggle-thumb: #ff8500;
  --toggle-icon: #0f172a;
}

/* --------------------------------------------------------------------------
   2. Smooth Theme Transition
   -------------------------------------------------------------------------- */
html.theme-transition,
html.theme-transition *,
html.theme-transition *:before,
html.theme-transition *:after {
  transition: background-color 0.28s ease,
              border-color 0.28s ease,
              color 0.22s ease,
              box-shadow 0.28s ease,
              fill 0.22s ease !important;
  transition-delay: 0s !important;
}

/* --------------------------------------------------------------------------
   3. Logo Switching
   -------------------------------------------------------------------------- */
.logo-light {
  display: none !important;
}
.logo-dark {
  display: block !important;
}

[data-theme="light"] .logo-light {
  display: block !important;
}
[data-theme="light"] .logo-dark {
  display: none !important;
}

/* --------------------------------------------------------------------------
   4. Theme Toggle Button Component (UI-UX Pro Max)
   -------------------------------------------------------------------------- */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: 12px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  cursor: pointer;
  outline: none;
  padding: 0;
  transition: var(--transition);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.theme-toggle-btn:hover {
  background: var(--accent-glow);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 133, 0, 0.2);
}

.theme-toggle-btn:active {
  transform: translateY(0) scale(0.95);
}

.theme-toggle-btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(255, 133, 0, 0.4);
}

.theme-toggle-icon {
  font-size: 1.15rem;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
  pointer-events: none;
}

/* Dark mode icon state: moon is active */
.theme-toggle-icon.fa-sun {
  display: none;
}
.theme-toggle-icon.fa-moon {
  display: inline-block;
  color: #ffaa50;
}

/* Light mode icon state: sun is active */
[data-theme="light"] .theme-toggle-icon.fa-moon {
  display: none;
}
[data-theme="light"] .theme-toggle-icon.fa-sun {
  display: inline-block;
  color: #e67300;
  transform: rotate(360deg);
}

/* Optional mobile toggle pill layout with text label */
.mobile-theme-pill {
  display: none;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.85rem 1.25rem;
  border-radius: 10px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

.mobile-theme-pill:hover,
.mobile-theme-pill:active {
  border-color: var(--primary);
  background: var(--accent-glow);
}

.mobile-theme-pill .pill-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   5. Light Theme Overrides for Core & Specific Components
   -------------------------------------------------------------------------- */
[data-theme="light"] body {
  background-color: var(--bg-dark);
  color: var(--text-main);
}

/* Custom Scrollbar in Light Mode */
[data-theme="light"] ::-webkit-scrollbar-track {
  background: #f1f5f9;
}
[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border: 2px solid #f1f5f9;
}
[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Navigation in Light Mode */
[data-theme="light"] nav {
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

[data-theme="light"] nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .nav-links a {
  color: #334155;
  font-weight: 600;
}

[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .nav-links a.active {
  color: var(--primary);
}

[data-theme="light"] .nav-secondary-btn {
  color: #1e293b;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
}

[data-theme="light"] .nav-secondary-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

[data-theme="light"] .mobile-menu-btn {
  color: #0f172a;
}

[data-theme="light"] nav.mobile-active {
  background: #ffffff;
}

/* Mega Menu */
[data-theme="light"] .mega-menu {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid #e2e8f0;
  border-top: 3px solid var(--primary);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.12);
}

[data-theme="light"] .mega-col h3 {
  color: var(--primary);
}

[data-theme="light"] .mega-col ul a {
  color: #475569;
}

[data-theme="light"] .mega-col ul a:hover {
  color: #0f172a;
  background: #f8fafc;
}

/* Hero Section in Light Mode */
[data-theme="light"] .hero {
  background-color: #f8fafc;
}

[data-theme="light"] .hero-overlay {
  background: linear-gradient(90deg, rgba(248, 250, 252, 0.95) 20%, rgba(248, 250, 252, 0.5) 100%);
}

[data-theme="light"] .hero-content h1 {
  color: #0f172a;
}

[data-theme="light"] .hero-content p {
  color: #475569;
}

[data-theme="light"] .secondary-btn {
  color: #0f172a;
  border-color: #cbd5e1;
  background: #ffffff;
}

[data-theme="light"] .secondary-btn:hover {
  background: #f1f5f9;
  border-color: var(--primary);
  color: var(--primary);
}

/* Search Bars & Inputs */
[data-theme="light"] .search-bar input,
[data-theme="light"] .product-search-bar input,
[data-theme="light"] .doc-search input,
[data-theme="light"] .search-page-box input,
[data-theme="light"] .hero-search-input {
  background: #ffffff !important;
  color: #0f172a !important;
  border-color: #cbd5e1 !important;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .search-bar input::placeholder,
[data-theme="light"] .product-search-bar input::placeholder,
[data-theme="light"] .doc-search input::placeholder,
[data-theme="light"] .search-page-box input::placeholder {
  color: #94a3b8 !important;
}

[data-theme="light"] .search-page-box {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .search-input-box {
  background: rgba(255, 255, 255, 0.95);
  border-color: #cbd5e1;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .search-input-box:hover {
  background: #ffffff;
  border-color: rgba(255, 133, 0, 0.6);
  box-shadow: 0 14px 38px rgba(15, 23, 42, 0.12), 0 0 25px rgba(255, 133, 0, 0.15);
}

[data-theme="light"] .search-input-box.focused,
[data-theme="light"] .search-input-box:focus-within {
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 16px 45px rgba(15, 23, 42, 0.14), 0 0 0 3px rgba(255, 133, 0, 0.18);
}

[data-theme="light"] .search-input-box input {
  color: #0f172a !important;
}

[data-theme="light"] .search-input-box input::placeholder {
  color: #64748b !important;
}

/* Popüler Hızlı Etiketler (Light Mode) */
[data-theme="light"] .quick-tags-label {
  color: #334155 !important;
  font-weight: 700 !important;
}

[data-theme="light"] .quick-tag-chip {
  background: #ffffff !important;
  border: 1px solid #cbd5e1 !important;
  color: #1e293b !important;
  font-weight: 600 !important;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .quick-tag-chip:hover {
  background: #fff7ed !important;
  border-color: var(--primary) !important;
  color: #c25e00 !important;
  box-shadow: 0 4px 12px rgba(255, 133, 0, 0.2);
  transform: translateY(-1px);
}

/* Dropdown Menu (Light Mode) */
[data-theme="light"] .search-dropdown-menu {
  background: rgba(255, 255, 255, 0.98);
  border: 1.5px solid #cbd5e1;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.15), 0 0 25px rgba(255, 133, 0, 0.1);
}

[data-theme="light"] .search-group-header {
  color: #c25e00;
  border-top: 1px solid #f1f5f9;
}

[data-theme="light"] .search-group-header .group-count {
  color: #64748b;
}

[data-theme="light"] .search-result-item {
  color: #1e293b;
  border-bottom: 1px solid #f8fafc;
}

[data-theme="light"] .search-result-item:hover,
[data-theme="light"] .search-result-item.selected {
  background: #fff7ed;
  color: #0f172a;
  border-left-color: var(--primary);
}

[data-theme="light"] .result-item-icon {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}

[data-theme="light"] .result-item-title {
  color: #0f172a;
}

[data-theme="light"] .result-item-sub {
  color: #64748b;
}

[data-theme="light"] .result-item-badge {
  background: #f1f5f9;
  color: #475569;
}

[data-theme="light"] .search-dropdown-footer {
  border-top: 1px solid #f1f5f9;
}

[data-theme="light"] .view-all-results-btn {
  background: #fff7ed;
  border-color: rgba(255, 133, 0, 0.35);
  color: #c25e00;
}

[data-theme="light"] .view-all-results-btn:hover {
  background: var(--primary);
  color: #ffffff;
}

[data-theme="light"] .search-empty-state h4 {
  color: #0f172a;
}

[data-theme="light"] .search-empty-state p {
  color: #64748b;
}


[data-theme="light"] .hero-top-search-item:hover {
  background: #f8fafc;
}

/* Section Titles & Badges */
[data-theme="light"] .section-title h2 {
  color: #0f172a;
}

[data-theme="light"] .section-title p {
  color: #64748b;
}

[data-theme="light"] .category-title {
  color: #0f172a;
}

/* Cards & Grid Items */
[data-theme="light"] .product-card,
[data-theme="light"] .product-list-card,
[data-theme="light"] .blog-card-v2,
[data-theme="light"] .action-card,
[data-theme="light"] .doc-card,
[data-theme="light"] .sidebar-block,
[data-theme="light"] .contact-info-card,
[data-theme="light"] .contact-form-card,
[data-theme="light"] .doc-sidebar {
  background: #ffffff !important;
  border: 1px solid #e2e8f0 !important;
  box-shadow: var(--shadow-card);
}

[data-theme="light"] .product-card:hover,
[data-theme="light"] .product-list-card:hover,
[data-theme="light"] .blog-card-v2:hover,
[data-theme="light"] .action-card:hover,
[data-theme="light"] .doc-card:hover {
  border-color: var(--primary) !important;
  box-shadow: var(--shadow-hover);
}

[data-theme="light"] .product-card h3,
[data-theme="light"] .product-list-card h3,
[data-theme="light"] .action-content h3,
[data-theme="light"] .doc-info h3,
[data-theme="light"] .doc-info h4,
[data-theme="light"] .fdc-name,
[data-theme="light"] .search-product-body h3,
[data-theme="light"] .search-doc-info h4,
[data-theme="light"] .search-section-title,
[data-theme="light"] .blog-card-v2 h3,
[data-theme="light"] .blog-info h3,
[data-theme="light"] .blog-body h3,
[data-theme="light"] .blog-content-v2 h3,
[data-theme="light"] .info-item-v2 h3 {
  color: #0f172a !important;
}

[data-theme="light"] .product-card p,
[data-theme="light"] .product-list-card p,
[data-theme="light"] .action-content p,
[data-theme="light"] .doc-info p,
[data-theme="light"] .blog-card-v2 p,
[data-theme="light"] .blog-info p,
[data-theme="light"] .blog-body p,
[data-theme="light"] .blog-content-v2 p,
[data-theme="light"] .info-item-v2 p {
  color: #475569 !important;
}

[data-theme="light"] .action-card {
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

/* Page Hero (Subpages) */
[data-theme="light"] .page-hero {
  background-color: #f1f5f9;
  border-bottom: 1px solid #e2e8f0;
}

[data-theme="light"] .page-hero h1 {
  color: #0f172a;
}

[data-theme="light"] .page-hero-small {
  border-bottom: 1px solid #e2e8f0;
}

[data-theme="light"] .page-hero-small h1 {
  color: #ffffff; /* Contrast on darkened hero banner */
}

/* Brands Marquee */
[data-theme="light"] .brands-marquee {
  background: #f1f5f9;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

/* Modals & Forms */
[data-theme="light"] .modal-v2 {
  background-color: var(--modal-overlay);
}

[data-theme="light"] .modal-content,
[data-theme="light"] .modal-content-v2 {
  background: #ffffff !important;
  border: 1px solid #e2e8f0 !important;
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.2) !important;
  color: #0f172a;
}

[data-theme="light"] .modal-content h2,
[data-theme="light"] .modal-header-v2 h2 {
  color: #0f172a;
}

[data-theme="light"] .close-modal,
[data-theme="light"] .close-modal-v2 {
  color: #64748b;
}

[data-theme="light"] .close-modal:hover,
[data-theme="light"] .close-modal-v2:hover {
  color: #0f172a;
}

[data-theme="light"] .form-group-v2 label,
[data-theme="light"] .modal-form label {
  color: #1e293b;
  font-weight: 500;
}

[data-theme="light"] .form-group-v2 input,
[data-theme="light"] .form-group-v2 textarea,
[data-theme="light"] .modal-form input,
[data-theme="light"] .modal-form textarea,
[data-theme="light"] .sort-options select {
  background: #ffffff !important;
  border: 1px solid #cbd5e1 !important;
  color: #0f172a !important;
}

[data-theme="light"] .form-group-v2 input:focus,
[data-theme="light"] .form-group-v2 textarea:focus,
[data-theme="light"] .modal-form input:focus,
[data-theme="light"] .modal-form textarea:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px rgba(255, 133, 0, 0.15) !important;
  outline: none;
}

[data-theme="light"] .form-group-v2 input::placeholder,
[data-theme="light"] .form-group-v2 textarea::placeholder,
[data-theme="light"] .modal-form input::placeholder,
[data-theme="light"] .modal-form textarea::placeholder {
  color: #94a3b8;
}

[data-theme="light"] .legal-text p,
[data-theme="light"] .legal-text ul {
  color: #334155 !important;
}

[data-theme="light"] .legal-text h3 {
  color: var(--primary) !important;
}

/* Footer in Light Mode */
[data-theme="light"] footer#contact {
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
  color: var(--footer-text);
}

[data-theme="light"] .footer-col h4 {
  color: var(--footer-heading);
}

[data-theme="light"] .footer-col p {
  color: var(--footer-text);
}

[data-theme="light"] .footer-links a {
  color: var(--footer-text);
}

[data-theme="light"] .footer-links a:hover {
  color: var(--primary);
}

[data-theme="light"] .footer-bottom {
  border-top: 1px solid var(--footer-border);
  color: #64748b;
}

[data-theme="light"] .geo-raw-md-link {
  background: rgba(255, 133, 0, 0.08);
  border-color: rgba(255, 133, 0, 0.4);
  color: #c96200;
}

[data-theme="light"] .geo-raw-md-link i {
  color: #c96200;
}

[data-theme="light"] .geo-raw-md-link:hover {
  background: #ff8500;
  border-color: #ff8500;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 133, 0, 0.28);
}

[data-theme="light"] .geo-raw-md-link:hover i {
  color: #ffffff;
}

[data-theme="light"] .geo-raw-badge {
  background: #e67600;
  color: #ffffff;
}

/* Cookie Banner in Light Mode */
[data-theme="light"] .cookie-banner {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid #e2e8f0;
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.15);
  color: #0f172a;
}

[data-theme="light"] .cookie-text p {
  color: #475569;
}

/* Documents Page Spec & Tables */
[data-theme="light"] .model-table {
  background: #ffffff;
  border: 1px solid #e2e8f0;
}

[data-theme="light"] .model-table th {
  background: #f1f5f9;
  color: #0f172a;
  border-bottom: 2px solid #e2e8f0;
}

[data-theme="light"] .model-table td {
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
}

[data-theme="light"] .model-table tr:hover td {
  background: rgba(255, 133, 0, 0.06);
  color: #0f172a;
}

[data-theme="light"] .spec-value {
  color: #0f172a;
}

[data-theme="light"] .spec-label {
  color: #64748b;
}

[data-theme="light"] .doc-download {
  background: #f1f5f9;
  color: #0f172a;
  border: 1px solid #e2e8f0;
}

[data-theme="light"] .doc-download:hover {
  background: var(--primary);
  color: #ffffff;
}

[data-theme="light"] .docs-nav-item {
  color: #334155;
}

[data-theme="light"] .docs-nav-item.active,
[data-theme="light"] .docs-nav-item:hover {
  background: #fff7ed;
  color: var(--primary);
}

/* Product Detail & Tabs */
[data-theme="light"] .tab-btn {
  color: #64748b;
}

[data-theme="light"] .tab-btn.active {
  color: var(--primary);
  border-color: var(--primary);
}

[data-theme="light"] .highlight-item span {
  color: #0f172a;
}

/* Social Links */
[data-theme="light"] .social-links-v2 a {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  color: #0f172a;
}

[data-theme="light"] .social-links-v2 a:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* --------------------------------------------------------------------------
   6. Responsive Layouts for Theme Toggle
   -------------------------------------------------------------------------- */
.mobile-theme-item {
  display: none;
}

@media (max-width: 992px) {
  /* On mobile header, ensure toggle button and hamburger sit cleanly side by side */
  .nav-actions {
    display: flex !important;
    align-items: center;
    gap: 0.75rem;
  }

  .nav-actions .theme-toggle-btn {
    display: inline-flex !important;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
  }

  /* Show mobile theme pill inside drawer menu */
  .mobile-theme-item {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    list-style: none;
  }

  .mobile-theme-pill {
    display: flex;
    margin-bottom: 0.5rem;
  }

  nav.mobile-active .nav-actions .theme-toggle-btn {
    display: none !important; /* In drawer menu, mobile-theme-pill is used instead */
  }
}