/* ════════════════════════════════════════════
   OtoMaliyet – custom.css
   Premium Dark/Light Theme with Glassmorphism
   ════════════════════════════════════════════ */

/* ─── Google Font Import ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ─── CSS Custom Properties (Design Tokens) ─── */
:root {
  /* Brand Colors */
  --brand-primary: #3b82f6;
  --brand-primary-hover: #2563eb;
  --brand-primary-light: #60a5fa;
  --brand-accent: #06b6d4;
  --brand-success: #10b981;
  --brand-success-dark: #059669;
  --brand-warning: #f59e0b;
  --brand-danger: #ef4444;
  --brand-danger-light: #fca5a5;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Borders */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.15);
}

/* ─── Dark Theme (Default) ─── */
[data-theme="dark"] {
  --bg-body: #0a0f1e;
  --bg-body-gradient: linear-gradient(135deg, #0a0f1e 0%, #111827 50%, #0f172a 100%);
  --bg-surface: rgba(30, 41, 59, 0.6);
  --bg-surface-hover: rgba(30, 41, 59, 0.8);
  --bg-card: rgba(30, 41, 59, 0.5);
  --bg-input: rgba(15, 23, 42, 0.8);
  --bg-input-focus: rgba(15, 23, 42, 1);
  --bg-tab: rgba(30, 41, 59, 0.4);
  --bg-tab-active: rgba(59, 130, 246, 0.15);
  --bg-result: rgba(16, 185, 129, 0.08);
  --bg-accordion: rgba(30, 41, 59, 0.4);

  --border-color: rgba(148, 163, 184, 0.12);
  --border-focus: var(--brand-primary);
  --border-tab-active: var(--brand-primary);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;
  --text-link: var(--brand-primary-light);

  --glass-bg: rgba(15, 23, 42, 0.65);
  --glass-border: rgba(148, 163, 184, 0.1);
  --glass-blur: 20px;

  --header-bg: rgba(10, 15, 30, 0.85);
  --scrollbar-track: #1e293b;
  --scrollbar-thumb: #334155;
}

/* ─── Light Theme ─── */
[data-theme="light"] {
  --bg-body: #edf5ff;
  --bg-body-gradient: linear-gradient(180deg, #edf5ff 0%, #f4f8fc 60%, #ffffff 100%);
  --bg-surface: rgba(255, 255, 255, 0.92);
  --bg-surface-hover: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-input: #f8fafc;
  --bg-input-focus: #ffffff;
  --bg-tab: rgba(255, 255, 255, 0.9);
  --bg-tab-active: #2563eb;
  --bg-result: rgba(16, 185, 129, 0.06);
  --bg-accordion: rgba(248, 250, 252, 0.92);

  --border-color: rgba(148, 163, 184, 0.2);
  --border-focus: var(--brand-primary);
  --border-tab-active: var(--brand-primary);

  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f8fafc;
  --text-link: var(--brand-primary);

  --glass-bg: rgba(255, 255, 255, 0.92);
  --glass-border: rgba(148, 163, 184, 0.2);
  --glass-blur: 20px;

  --header-bg: rgba(255, 255, 255, 0.92);
  --scrollbar-track: #e2e8f0;
  --scrollbar-thumb: #cbd5e1;
}

/* ─── Reset & Base ─── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-body-gradient);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition-slow), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* ─── Full-Page Fixed Automotive Background Canvas (Header to Footer) ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image: 
    radial-gradient(ellipse at 50% 30%, rgba(237, 245, 255, 0.78) 0%, rgba(244, 248, 252, 0.82) 45%, rgba(237, 245, 255, 0.75) 100%),
    linear-gradient(90deg, rgba(237, 245, 255, 0.35) 0%, rgba(244, 248, 252, 0.82) 35%, rgba(244, 248, 252, 0.82) 65%, rgba(237, 245, 255, 0.35) 100%),
    url('../images/hero_bg_automotive.jpg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  transition: opacity 0.3s ease;
}

[data-theme="dark"] body::before {
  background-image: 
    radial-gradient(ellipse at 50% 30%, rgba(10, 15, 30, 0.85) 0%, rgba(10, 15, 30, 0.88) 45%, rgba(15, 23, 42, 0.82) 100%),
    linear-gradient(90deg, rgba(10, 15, 30, 0.45) 0%, rgba(10, 15, 30, 0.88) 35%, rgba(10, 15, 30, 0.88) 65%, rgba(10, 15, 30, 0.45) 100%),
    url('../images/hero_bg_automotive.jpg');
}

/* ─── Main Wrapper ─── */
.main-wrapper {
  position: relative;
  overflow-x: hidden;
  min-height: calc(100vh - 80px);
}

/* ─── Custom Scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--brand-primary);
}

/* ─── Container ─── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--space-5);
  position: relative;
  z-index: 2;
}

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-3) 0;
  transition: background var(--transition-base);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.logo:hover .logo-icon {
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.logo-text {
  font-size: var(--font-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.logo-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  display: block;
}

/* Header Center Navigation */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header-nav-link {
  background: transparent;
  border: none;
  font-family: var(--font-family);
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
  padding: var(--space-2) var(--space-1);
  position: relative;
  transition: color var(--transition-base);
}

.header-nav-link:hover {
  color: var(--brand-primary);
}

.header-nav-link.active {
  color: var(--brand-primary);
  font-weight: 700;
}

.header-nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-primary);
  border-radius: var(--radius-full);
}

.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  color: var(--text-primary);
  cursor: pointer;
}

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

/* Theme Toggle */
.theme-toggle {
  position: relative;
  width: 52px;
  height: 28px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base);
  padding: 0;
}

.theme-toggle:hover {
  border-color: var(--brand-primary);
}

.theme-toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.3);
}

[data-theme="light"] .theme-toggle::after {
  transform: translateX(24px);
}

.theme-toggle-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  transition: opacity var(--transition-base);
}

.theme-toggle-icon--moon {
  left: 7px;
}

.theme-toggle-icon--sun {
  right: 7px;
}

[data-theme="dark"] .theme-toggle-icon--moon { opacity: 1; }
[data-theme="dark"] .theme-toggle-icon--sun { opacity: 0.3; }
[data-theme="light"] .theme-toggle-icon--moon { opacity: 0.3; }
[data-theme="light"] .theme-toggle-icon--sun { opacity: 1; }

/* ─── Hero Section ─── */
.hero {
  text-align: center;
  padding: var(--space-10) 0 var(--space-6);
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 {
  font-size: var(--font-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, var(--text-primary), var(--brand-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-secondary);
  font-size: var(--font-lg);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── Tabs ─── */
.tabs {
  display: flex;
  gap: var(--space-2);
  max-width: 900px;
  margin: 0 auto var(--space-8);
  background: var(--bg-surface);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  padding: var(--space-2);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.tabs.card-tabs {
  margin: 0 0 var(--space-6) 0;
  max-width: 100%;
}

.tab-btn {
  flex: 1 1 auto;
  padding: var(--space-3) var(--space-5);
  background: transparent;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  white-space: nowrap;
  text-align: center;
}

.tab-btn:hover {
  color: var(--brand-primary);
}

.tab-btn.active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-hover));
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
  font-weight: 700;
}

.tab-btn .tab-icon {
  margin-right: var(--space-2);
  font-size: var(--font-base);
}

/* ─── Glass Card ─── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  transition: background var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
  max-width: 900px;
  margin: 0 auto;
}

.panel-heading {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
}

/* ─── Tab Panels ─── */
.tab-panel {
  display: none;
  animation: fadeSlideIn 0.4s ease forwards;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Form Elements ─── */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.01em;
}

.form-label .label-icon {
  margin-right: var(--space-1);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-base);
  transition: all var(--transition-base);
  appearance: none;
  -webkit-appearance: none;
}

.form-control:hover {
  border-color: rgba(59, 130, 246, 0.3);
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12), 0 0 20px rgba(59, 130, 246, 0.06);
}

/* Select arrow */
select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 0 1 .708 0L8 8.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

/* Date input */
input[type="date"].form-control {
  cursor: pointer;
}

input[type="date"].form-control::-webkit-calendar-picker-indicator {
  filter: invert(0.5);
  cursor: pointer;
}

[data-theme="dark"] input[type="date"].form-control::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
}

/* ─── Form Row (side-by-side) ─── */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 540px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ─── Primary Button ─── */
.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-hover));
  color: #ffffff;
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: var(--font-base);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  margin-top: var(--space-6);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-primary-hover), #1d4ed8);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary span {
  position: relative;
  z-index: 1;
}

.btn-primary .btn-icon {
  position: relative;
  z-index: 1;
  font-size: var(--font-lg);
}

/* ─── Result Card ─── */
.result-card {
  margin-top: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  animation: resultReveal 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  box-shadow: var(--shadow-xl);
}

@keyframes resultReveal {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.result-header {
  padding: var(--space-5) var(--space-6);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(6, 182, 212, 0.05));
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.result-header-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
}

.result-header h3 {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--text-primary);
}

.result-body {
  padding: var(--space-6);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-fast);
}

.result-row:last-child {
  border-bottom: none;
}

.result-row:hover {
  background: rgba(59, 130, 246, 0.03);
  margin: 0 calc(var(--space-3) * -1);
  padding-left: var(--space-3);
  padding-right: var(--space-3);
  border-radius: var(--radius-md);
}

.result-label {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.result-value {
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--text-primary);
}

.result-value.danger {
  color: var(--brand-danger);
}

.result-value.success {
  color: var(--brand-success);
}

.result-value.warning {
  color: var(--brand-warning);
}

/* Total Box */
.result-total {
  margin-top: var(--space-5);
  padding: var(--space-5) var(--space-6);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  border-radius: var(--radius-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
  position: relative;
  overflow: hidden;
}

.result-total::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
}

.result-total-label {
  font-size: var(--font-base);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1;
}

.result-total-value {
  font-size: var(--font-2xl);
  font-weight: 900;
  color: #ffffff;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

/* MTV-specific result styles */
.result-total.mtv-total {
  background: linear-gradient(135deg, var(--brand-success-dark), var(--brand-success));
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.3);
}

.taksit-info {
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-result);
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(16, 185, 129, 0.3);
}

.taksit-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  font-size: var(--font-sm);
}

.taksit-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.taksit-value {
  color: var(--brand-success);
  font-weight: 700;
}

/* ─── Info Banner ─── */
.info-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.info-banner-icon {
  font-size: var(--font-lg);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Ad Placeholders (Hidden until domain & AdSense setup) ─── */
.ad-placeholder {
  display: none !important;
}

.ad-placeholder-label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: var(--font-xs);
  color: var(--text-muted);
}

/* ─── Site Notice ─── */
.site-notice {
  font-size: var(--font-xs);
  color: var(--text-muted);
  text-align: center;
  max-width: 900px;
  margin: var(--space-6) auto var(--space-8);
  line-height: 1.6;
}

.site-notice a {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-base);
}

.site-notice a:hover {
  text-decoration: underline;
}

/* ─── FAQ / Accordion ─── */
.faq-section {
  margin-top: var(--space-12);
  margin-bottom: var(--space-12);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.faq-title {
  font-size: var(--font-2xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.faq-title .faq-title-icon {
  margin-right: var(--space-2);
}

.accordion-item {
  background: var(--bg-accordion);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.accordion-item:hover {
  border-color: rgba(59, 130, 246, 0.2);
}

.accordion-item.open {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-glow);
}

.accordion-btn {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-base);
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  transition: color var(--transition-base);
}

.accordion-btn:hover {
  color: var(--brand-primary);
}

.accordion-arrow {
  font-size: var(--font-sm);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  color: var(--text-muted);
}

.accordion-item.open .accordion-arrow {
  transform: rotate(180deg);
  color: var(--brand-primary);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

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

.accordion-content {
  padding: 0 var(--space-6) var(--space-5);
  color: var(--text-secondary);
  font-size: var(--font-sm);
  line-height: 1.8;
}

/* ─── Footer ─── */
.site-footer {
  padding: var(--space-8) 0;
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-sm);
  border-top: 1px solid var(--border-color);
}

.site-footer a {
  color: var(--brand-primary-light);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-base);
}

.site-footer a:hover {
  color: var(--brand-primary);
}

/* ─── Utility: Hidden ─── */
.hidden {
  display: none !important;
}

/* ─── Animations ─── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .hero,
  .tabs,
  .glass-card,
  .ad-placeholder,
  .faq-section {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 4px;
  }
  .tabs::-webkit-scrollbar {
    display: none;
  }
  .tab-btn {
    flex: 0 0 auto;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-xs);
  }
}

@media (max-width: 640px) {
  body::before {
    background-image: 
      radial-gradient(ellipse at 50% 30%, rgba(237, 245, 255, 0.94) 0%, rgba(244, 248, 252, 0.92) 50%, rgba(237, 245, 255, 0.88) 100%),
      url('../images/hero_bg_automotive.jpg');
  }

  [data-theme="dark"] body::before {
    background-image: 
      radial-gradient(ellipse at 50% 30%, rgba(10, 15, 30, 0.95) 0%, rgba(10, 15, 30, 0.92) 50%, rgba(15, 23, 42, 0.88) 100%),
      url('../images/hero_bg_automotive.jpg');
  }

  .container {
    padding: 0 var(--space-4);
  }

  .hero h1 {
    font-size: var(--font-2xl);
  }

  .hero p {
    font-size: var(--font-base);
  }

  .glass-card {
    padding: var(--space-5);
    border-radius: var(--radius-xl);
  }

  .result-total {
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
  }

  .result-total-value {
    font-size: var(--font-xl);
  }

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

  .result-header {
    padding: var(--space-4) var(--space-5);
  }

  .accordion-btn {
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-sm);
  }

  .accordion-content {
    padding: 0 var(--space-5) var(--space-4);
  }
}

@media (max-width: 380px) {
  .logo-text {
    font-size: var(--font-lg);
  }

  .hero h1 {
    font-size: var(--font-xl);
  }
}

/* ─── Print Styles ─── */
@media print {
  .site-header,
  .theme-toggle,
  .ad-placeholder,
  .tabs,
  .btn-primary {
    display: none !important;
  }

  body {
    background: #fff !important;
    color: #000 !important;
  }

  .glass-card {
    background: #fff !important;
    border: 1px solid #ddd !important;
    box-shadow: none !important;
  }
}

/* ─── No-result State ─── */
.no-result {
  text-align: center;
  padding: var(--space-10) var(--space-6);
  color: var(--text-muted);
}

.no-result-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.no-result-text {
  font-size: var(--font-sm);
  line-height: 1.6;
}

/* ─── Conditional Matrah Group ─── */
.matrah-group {
  transition: opacity var(--transition-base), max-height var(--transition-base);
  overflow: hidden;
}

.matrah-group.collapsed {
  max-height: 0;
  opacity: 0;
  margin: 0;
  padding: 0;
}

.matrah-group.expanded {
  max-height: 200px;
  opacity: 1;
}

/* ─── Tescil Radio Group ─── */
.radio-group {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.radio-card {
  flex: 1;
  position: relative;
}

.radio-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-card-label {
  display: block;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
}

.radio-card-label:hover {
  border-color: rgba(59, 130, 246, 0.3);
  color: var(--text-primary);
}

.radio-card input[type="radio"]:checked + .radio-card-label {
  border-color: var(--brand-primary);
  background: linear-gradient(135deg, var(--brand-primary), #1d4ed8);
  color: #ffffff !important;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* ─── Error State ─── */
.form-error {
  border-color: var(--brand-danger) !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

.error-message {
  color: var(--brand-danger);
  font-size: var(--font-xs);
  margin-top: var(--space-1);
  font-weight: 500;
  animation: fadeSlideIn 0.3s ease;
}

/* ─── Helper Text ─── */
.helper-text {
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-top: var(--space-2);
  line-height: 1.5;
  font-weight: 400;
  font-style: italic;
}

/* ─── Status Badge ─── */
.status-badge {
  margin-left: auto;
  font-size: var(--font-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.status-normal {
  color: var(--brand-success);
}

.status-warning {
  color: var(--brand-warning);
}

.status-today {
  color: var(--brand-primary);
}

.status-overdue {
  color: var(--brand-danger);
}

/* ─── Countdown Section ─── */
.countdown-section {
  text-align: center;
  padding: var(--space-6) var(--space-5);
  border-bottom: 1px solid var(--glass-border);
}

.countdown-label {
  font-size: var(--font-sm);
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.countdown-value {
  font-size: var(--font-3xl);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.countdown-normal .countdown-value {
  color: var(--brand-success);
}

.countdown-warning .countdown-value {
  color: var(--brand-warning);
  animation: subtlePulse 2s ease-in-out infinite;
}

.countdown-today .countdown-value {
  color: var(--brand-primary);
}

.countdown-overdue .countdown-value {
  color: var(--brand-danger);
}

@keyframes subtlePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

/* ─── Station Finder Button ─── */
.station-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-5);
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: var(--font-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.station-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: var(--bg-tab-active);
}

/* ─── Responsive: Countdown ─── */
@media (max-width: 640px) {
  .countdown-value {
    font-size: var(--font-2xl);
  }

  .countdown-section {
    padding: var(--space-5) var(--space-4);
  }

  .status-badge {
    font-size: 0.65rem;
    padding: 2px var(--space-2);
  }
}

/* ─── Form Sections ─── */
.form-section {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px dashed var(--border-color);
}

.form-section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.form-section-title {
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

/* ─── Maliyet Hero ─── */
.maliyet-hero {
  text-align: center;
  padding: var(--space-6) var(--space-5);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.04));
  border-bottom: 1px solid var(--glass-border);
}

.maliyet-hero-label {
  font-size: var(--font-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.maliyet-hero-value {
  font-size: var(--font-3xl);
  font-weight: 900;
  color: var(--brand-primary);
  letter-spacing: -0.02em;
}

/* ─── Maliyet Grid ─── */
.maliyet-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.maliyet-grid-item {
  text-align: center;
  padding: var(--space-3);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.maliyet-grid-label {
  display: block;
  font-size: var(--font-xs);
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 2px;
}

.maliyet-grid-value {
  display: block;
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--text-primary);
}

/* ─── Maliyet Breakdown (Progress Bars) ─── */
.maliyet-section-subtitle {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.breakdown-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.breakdown-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-sm);
}

.breakdown-label {
  font-weight: 600;
  color: var(--text-secondary);
}

.breakdown-value {
  font-weight: 700;
  color: var(--text-primary);
}

.breakdown-value small {
  font-weight: 400;
  color: var(--text-muted);
  font-size: var(--font-xs);
}

.breakdown-track {
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.breakdown-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* ─── Warning Banner & Disclaimer ─── */
.warning-banner {
  padding: var(--space-4);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-md);
  color: var(--brand-warning);
  font-size: var(--font-xs);
  line-height: 1.5;
  font-weight: 500;
}

.disclaimer-text {
  font-size: var(--font-xs);
  color: var(--text-muted);
  line-height: 1.6;
  text-align: justify;
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-4);
}

/* ─── FAQ Source Citation Links ─── */
.faq-source-info {
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: 1px dashed var(--border-color);
  font-size: var(--font-xs);
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.faq-source-link {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-base);
}

.faq-source-link:hover {
  text-decoration: underline;
}

/* ─── Muayene Checklist Component ─── */
.checklist-card {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
}

.checklist-header {
  margin-bottom: var(--space-5);
}

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

.checklist-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.checklist-title {
  font-size: var(--font-lg);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.checklist-subtitle {
  font-size: var(--font-xs);
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Progress Tracker */
.checklist-progress-box {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-5);
}

.checklist-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.checklist-progress-percent {
  color: var(--brand-primary);
}

.checklist-progress-track {
  width: 100%;
  height: 8px;
  background: var(--bg-tab);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.checklist-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-success));
  border-radius: var(--radius-full);
  transition: width 0.35s ease;
}

/* Success Card */
.checklist-success-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-5);
  animation: fadeSlideIn 0.4s ease forwards;
}

.checklist-success-card.hidden {
  display: none !important;
}

.success-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand-success);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.success-card-title {
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--brand-success);
  line-height: 1.3;
}

.success-card-desc {
  font-size: var(--font-xs);
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Checklist Items */
.checklist-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-input);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  user-select: none;
}

.checklist-item:hover {
  border-color: rgba(59, 130, 246, 0.35);
  background: var(--bg-surface);
}

.checklist-item.completed {
  background: rgba(16, 185, 129, 0.04);
  border-color: rgba(16, 185, 129, 0.25);
}

.checklist-checkbox {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--brand-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.checklist-item-content {
  cursor: pointer;
  flex: 1;
}

.checklist-item-title {
  display: block;
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  transition: color var(--transition-base);
}

.checklist-item.completed .checklist-item-title {
  color: var(--brand-success);
}

.checklist-item-desc {
  display: block;
  font-size: var(--font-xs);
  color: var(--text-secondary);
  margin-top: 2px;
  line-height: 1.5;
  transition: opacity var(--transition-base);
}

.checklist-item.completed .checklist-item-desc {
  opacity: 0.85;
}

/* ─── Clean Feedback Box (No Pill Badges, No Heavy Borders) ─── */
.checklist-feedback-box {
  animation: fadeSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.checklist-feedback-box.hidden {
  display: none !important;
}

.feedback-clean {
  padding: var(--space-5) 0 0;
  border-top: 1px dashed var(--border-color);
  margin-top: var(--space-5);
}

.feedback-clean-title {
  font-size: var(--font-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.feedback-clean.success .feedback-clean-title {
  color: var(--brand-success);
}

.feedback-clean.warning .feedback-clean-title {
  color: var(--brand-warning);
}

.feedback-clean-text {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.missing-clean-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.missing-clean-item {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--font-sm);
  color: var(--text-primary);
  line-height: 1.5;
}

.missing-clean-item::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--brand-warning);
  font-weight: 700;
}

@media (max-width: 860px) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .official-sources-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .official-banner-right {
    align-items: flex-start;
  }
}

@media (max-width: 540px) {
  .maliyet-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    padding: var(--space-4);
  }

  .maliyet-hero-value {
    font-size: var(--font-2xl);
  }

  .checklist-item {
    padding: var(--space-3) var(--space-4);
  }

  .checklist-title {
    font-size: var(--font-base);
  }

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

  .trust-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Legal Footer Links & Modals (AdSense Approval Required) ─── */
.footer-legal-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-size: var(--font-xs);
  color: var(--text-muted);
}

.footer-legal-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: var(--font-xs);
  font-weight: 600;
  cursor: pointer;
  padding: 2px 4px;
  transition: color var(--transition-base);
}

.footer-legal-btn:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.legal-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.legal-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.legal-modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-6);
  box-shadow: var(--shadow-xl);
  position: relative;
  color: var(--text-primary);
}

.legal-modal-content h3 {
  font-size: var(--font-xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
  color: var(--brand-primary);
}

.legal-modal-content p {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.legal-modal-content a {
  color: var(--brand-primary);
  text-decoration: underline;
}

.legal-modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.legal-modal-close:hover {
  color: var(--text-primary);
  background: var(--border-color);
}

/* ─── Breadcrumb ─── */
.breadcrumb-nav {
  margin: var(--space-4) 0 var(--space-6);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: var(--font-xs);
  color: var(--text-muted);
  flex-wrap: wrap;
}

.breadcrumb-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.breadcrumb-item a:hover {
  color: var(--brand-primary);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ─── Popular Tools Grid (Homepage) ─── */
.popular-tools-section {
  margin: var(--space-10) 0;
}

.section-title {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.popular-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.tool-card {
  position: relative;
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 32px 24px 24px;
  min-height: 270px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  z-index: 1;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center bottom;
  opacity: 0.14;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: -1;
  pointer-events: none;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.12);
}

.tool-card:hover::before {
  opacity: 0.22;
  transform: scale(1.04);
}

[data-theme="dark"] .tool-card::before {
  opacity: 0.22;
}

[data-theme="dark"] .tool-card:hover::before {
  opacity: 0.32;
}

.tool-card-title {
  font-size: var(--font-lg);
  font-weight: 800;
  margin-top: 0;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.tool-card-desc {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 0;
  margin-bottom: var(--space-6);
  flex: 1;
}

/* Card Specific Background Images */
.tool-card--muayene::before {
  background-image: url('../img/card_bg_muayene.jpg');
}

.tool-card--mtv::before {
  background-image: url('../img/card_bg_mtv.jpg');
}

.tool-card--maliyet::before {
  background-image: url('../img/card_bg_maliyet.jpg');
}

.tool-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: rgba(37, 99, 235, 0.08);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: var(--space-4);
}

.tool-card-title {
  font-size: var(--font-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.tool-card-desc {
  font-size: var(--font-xs);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-4);
  flex: 1;
}

.tool-card-action {
  font-size: var(--font-xs);
  font-weight: 700;
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ─── SEO Article Guide Section ─── */
.seo-article-guide {
  margin-top: var(--space-10);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.seo-article-guide h2 {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-primary);
  margin: var(--space-8) 0 var(--space-3);
  letter-spacing: -0.02em;
}

.seo-article-guide h2:first-of-type {
  margin-top: 0;
}

.seo-article-guide p {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.seo-article-guide ul,
.seo-article-guide ol {
  margin: 0 0 var(--space-4) var(--space-6);
  color: var(--text-secondary);
  font-size: var(--font-sm);
  line-height: 1.7;
}

.seo-article-guide li {
  margin-bottom: var(--space-2);
}

.source-attribution {
  display: block;
  font-size: var(--font-xs);
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: var(--space-4);
  margin-bottom: var(--space-6);
}

.source-attribution a {
  color: var(--brand-primary);
  text-decoration: underline;
  font-weight: 600;
}

@media (max-width: 900px) {
  .popular-tools-grid {
    grid-template-columns: 1fr;
  }
  .header-nav {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
  }
}

/* ─── En Çok Aranan Araç Bilgileri Grid ─── */
.info-links-section {
  margin-top: var(--space-10);
}

.info-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.info-link-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-5);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--font-sm);
  font-weight: 600;
  transition: all var(--transition-base);
}

.info-link-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
  color: var(--brand-primary);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.08);
}

.info-link-card .arrow-icon {
  color: var(--brand-primary);
  font-size: var(--font-base);
  transition: transform var(--transition-base);
}

.info-link-card:hover .arrow-icon {
  transform: translateX(4px);
}

@media (max-width: 900px) {
  .info-links-grid {
    grid-template-columns: 1fr;
  }
}