/**
 * Han Kuyumculuk - Optimized CSS
 * CLS Fixed, Performance Optimized, Professional Design
 */

/* ===== CSS Variables ===== */
:root {
    /* Premium Color Palette - High Contrast */
    --primary-color: #B8860B;
    --primary-dark: #8B6914;
    --primary-light: #DAA520;
    --primary-gradient: linear-gradient(135deg, #B8860B 0%, #DAA520 50%, #F0C14B 100%);
    --secondary-color: #0D1117;
    --secondary-light: #161B22;
    --accent-color: #1F883D;
    --accent-light: #26A641;

    /* Status Colors - High Contrast */
    --success-color: #1F883D;
    --success-light: #DCFCE7;
    --danger-color: #CF222E;
    --danger-light: #FFEBE9;
    --warning-color: #9A6700;
    --warning-light: #FFF8C5;
    --info-color: #0969DA;
    --info-light: #DDF4FF;

    /* Neutral Colors - WCAG AA High Contrast */
    --white: #FFFFFF;
    --gray-50: #F6F8FA;
    --gray-100: #EAEEF2;
    --gray-200: #D0D7DE;
    --gray-300: #57606A;
    /* Improved: 5.74:1 contrast ratio */
    --gray-400: #424A53;
    /* Improved: 7.87:1 contrast ratio */
    --gray-500: #32383F;
    /* Improved: 10.5:1 contrast ratio */
    --gray-600: #24292F;
    --gray-700: #1C2128;
    --gray-800: #161B22;
    --gray-900: #0D1117;
    --black: #010409;

    /* Typography - System Fonts Only (ZERO CLS) */
    --font-primary: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Shadows - Minimal for performance */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);

    /* PERFORMANCE: Disable transitions initially, enable after load */
    --transition-fast: 0s;
    --transition-base: 0s;
    --transition-slow: 0s;

    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

/* Enable transitions after page load */
.transitions-enabled {
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --white: #0D1117;
    --gray-50: #161B22;
    --gray-100: #21262D;
    --gray-200: #30363D;
    --gray-300: #484F58;
    --gray-400: #6E7681;
    --gray-500: #8B949E;
    --gray-600: #C9D1D9;
    --gray-700: #E6EDF3;
    --gray-800: #F0F6FC;
    --gray-900: #FFFFFF;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Top Bar - WCAG AA High Contrast ===== */
.top-bar {
    background: var(--secondary-color);
    color: #E6EDF3;
    /* High contrast: 13.5:1 */
    font-size: 0.8125rem;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-800);
}

.top-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.update-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: #E6EDF3;
    /* High contrast: 13.5:1 */
}

.update-time i {
    color: var(--primary-color);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.top-link {
    color: #E6EDF3;
    /* High contrast: 13.5:1 */
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.social-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    color: var(--gray-400);
    border-radius: var(--radius-md);
    text-decoration: none;
}

/* ===== Main Header - CLS FIXED ===== */
.main-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: 64px;
    /* Fixed height for CLS */
}

.main-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    /* Match header height */
    gap: var(--spacing-xl);
}

/* Logo - Professional Style */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--secondary-color);
    font-weight: 700;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.logo-title span {
    color: var(--primary-color);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-toggle {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--gray-600);
    cursor: pointer;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    gap: 4px;
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 1px;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background: var(--white);
    padding: 0;
    overflow-y: auto;
    transform: translateX(100%);
}

.mobile-menu.active .mobile-menu-content {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.mobile-menu-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.mobile-menu-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-200);
    border: none;
    border-radius: var(--radius-md);
    color: var(--gray-700);
    cursor: pointer;
}

.mobile-nav-list {
    list-style: none;
    padding: var(--spacing-md);
}

.mobile-nav-item {
    margin-bottom: var(--spacing-xs);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-md);
}

.mobile-nav-link i {
    width: 20px;
    color: var(--primary-color);
}

/* ===== Main Content ===== */
.main-content {
    min-height: calc(100vh - 300px);
}

/* ===== Hero Section - CLS FIXED ===== */
.hero-section {
    background: linear-gradient(135deg, #0C1015 0%, #161B22 50%, #21262D 100%);
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
    /* Fixed minimum height for CLS */
    min-height: 380px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    color: #F0F6FC;
    /* Fixed height for CLS */
    min-height: 2.6rem;
}

.hero-title span {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--gray-400);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    /* Fixed height for CLS */
    min-height: 1.5rem;
}

/* ===== Quick Stats - CLS FIXED ===== */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.quick-stat-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    /* Fixed dimensions for CLS */
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.quick-stat-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    margin: 0 auto var(--spacing-sm);
    font-size: 1rem;
    color: var(--secondary-color);
}

.quick-stat-label {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-bottom: var(--spacing-xs);
    /* Prevent text overflow */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.quick-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: #F0F6FC;
    font-family: var(--font-mono);
    /* Fixed width to prevent number shifts */
    min-width: 100px;
    /* Prevent text overflow */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.quick-stat-change {
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-family: var(--font-mono);
    /* Fixed height */
    min-height: 1.125rem;
}

.quick-stat-change.up {
    color: var(--success-color);
}

.quick-stat-change.down {
    color: var(--danger-color);
}

/* ===== Section Styles ===== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.section-title span {
    color: var(--primary-dark);
}

.section-subtitle {
    font-size: 0.9375rem;
    color: var(--gray-600);
    max-width: 500px;
    margin: 0 auto;
}

/* ===== Price Cards Grid - CLS FIXED ===== */
.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.price-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--gray-200);
    position: relative;
    /* Fixed dimensions for CLS */
    min-height: 160px;
    display: flex;
    flex-direction: column;
}

.price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* PERFORMANCE: Use only transform for hover - GPU accelerated */
.price-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.price-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.price-card-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    /* Prevent overflow */
    min-width: 0;
    flex: 1;
}

.price-card-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: var(--radius-md);
    color: var(--secondary-color);
    font-size: 1rem;
}

.price-card-icon.currency {
    background: linear-gradient(135deg, var(--info-light), var(--info-color));
    color: var(--white);
}

.price-card-name {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.875rem;
    /* Prevent text overflow */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.price-card-code {
    font-size: 0.6875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.price-card-change {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-mono);
    /* Fixed width to prevent shifts */
    min-width: 60px;
    justify-content: center;
}

.price-card-change.up {
    background: var(--success-light);
    color: var(--success-color);
}

.price-card-change.down {
    background: var(--danger-light);
    color: var(--danger-color);
}

.price-card-change.stable {
    background: var(--gray-100);
    color: var(--gray-500);
}

.price-card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    flex: 1;
}

.price-item {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.price-item-label {
    font-size: 0.6875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.price-item-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    font-family: var(--font-mono);
    /* Prevent overflow */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.price-card-footer {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.6875rem;
    color: var(--gray-500);
}

/* ===== Calculator Section ===== */
.calculator-section {
    background: var(--gray-50);
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.calculator-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--gray-200);
}

.calculator-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-100);
}

.calculator-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    color: var(--secondary-color);
    font-size: 1.25rem;
}

.calculator-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
}

.calculator-card-subtitle {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    color: var(--gray-800);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.15);
}

.form-select {
    appearance: none;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%236E7781"><path d="M7 10l5 5 5-5z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.input-group .form-control {
    flex: 1;
}

.input-group .form-select {
    width: 100px;
    flex-shrink: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--font-primary);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
}

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

/* PERFORMANCE: Use only transform for hover */
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
}

.calculator-result {
    background: var(--secondary-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    margin-top: var(--spacing-md);
}

.calculator-result-label {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-bottom: 2px;
}

.calculator-result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-mono);
}

.calculator-result-info {
    font-size: 0.6875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

/* ===== Sidebar ===== */
.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-lg);
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.sidebar-widget {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--gray-200);
}

.widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.widget-title i {
    color: var(--primary-color);
}

/* Mini Price List */
.mini-price-list {
    list-style: none;
}

.mini-price-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--gray-100);
}

.mini-price-item:last-child {
    border-bottom: none;
}

.mini-price-name {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.mini-price-value {
    font-weight: 700;
    color: var(--gray-900);
    font-size: 0.8125rem;
    font-family: var(--font-mono);
}

.mini-price-change {
    font-size: 0.6875rem;
    margin-left: var(--spacing-xs);
}

/* ===== Ad Containers - CLS Optimized ===== */
.ad-container {
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-height: 90px;
    /* CLS Prevention: Reserve space for ads */
    contain: layout style;
}

/* Standard ad sizes with aspect ratios */
.ad-container--leaderboard {
    aspect-ratio: 728 / 90;
    min-height: 90px;
    max-height: 90px;
}

.ad-container--sidebar {
    aspect-ratio: 300 / 250;
    min-height: 250px;
}

.ad-container--mobile {
    aspect-ratio: 320 / 50;
    min-height: 50px;
}

/* ===== Footer - WCAG AA High Contrast ===== */
.main-footer {
    background: var(--secondary-color);
    color: #C9D1D9;
    /* High contrast: 10.5:1 */
}

.footer-top {
    padding: var(--spacing-2xl) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo .logo-title {
    color: var(--primary-color);
}

.footer-about {
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    color: #C9D1D9;
    /* High contrast: 10.5:1 */
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    color: var(--gray-400);
    border-radius: var(--radius-md);
    text-decoration: none;
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: #E6EDF3;
    /* Improved contrast: 12.4:1 */
    text-decoration: none;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    /* Touch target: minimum 44px height */
    min-height: 44px;
    padding: var(--spacing-xs) 0;
    /* No color transition - use opacity for GPU compositing */
}

.footer-links a:hover {
    opacity: 0.85;
    /* GPU composited */
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.footer-contact li i {
    color: var(--primary-color);
    margin-top: 2px;
}

.footer-contact a {
    color: #E6EDF3;
    /* High contrast: 13.5:1 */
    text-decoration: none;
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-md) 0;
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    font-size: 0.8125rem;
}

.disclaimer {
    font-size: 0.6875rem;
    color: #8B949E;
    /* Improved contrast: 5.3:1 - meets AA for small text */
}

/* ===== Back to Top - GPU Accelerated ===== */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: var(--secondary-color);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    box-shadow: var(--shadow-md);
    z-index: var(--z-fixed);
    /* GPU acceleration */
    will-change: transform, opacity;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ===== Utility Classes ===== */
.text-success {
    color: var(--success-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.text-muted {
    color: var(--gray-500) !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

/* ===== SEO Content ===== */
.seo-content {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.seo-content h2,
.seo-content h3 {
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.seo-content p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.seo-content ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.seo-content li {
    color: var(--gray-600);
    margin-bottom: var(--spacing-xs);
}

/* ===== Responsive Design ===== */
@media (max-width: 1200px) {
    .content-wrapper {
        grid-template-columns: 1fr 280px;
    }

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

@media (max-width: 992px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

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

@media (max-width: 768px) {

    /* CRITICAL: Non-sticky header on mobile */
    .main-header {
        position: relative;
        height: auto;
        min-height: 56px;
    }

    .header-content {
        height: auto;
        min-height: 56px;
        padding: var(--spacing-sm) 0;
    }

    .top-bar {
        display: none;
    }

    html {
        font-size: 14px;
    }

    .hero-section {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }

    .hero-title {
        font-size: 1.5rem;
        min-height: auto;
    }

    .hero-subtitle {
        min-height: auto;
    }

    .quick-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .quick-stat-card {
        min-height: 120px;
        padding: var(--spacing-sm);
    }

    .quick-stat-value {
        font-size: 1rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-title {
        font-size: 1.25rem;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .quick-stats {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 1.25rem;
    }

    .input-group {
        flex-direction: column;
    }

    .input-group .form-select {
        width: 100%;
    }
}

/* ===== Print Styles ===== */
@media print {

    .top-bar,
    .main-header,
    .main-footer,
    .back-to-top,
    .ad-container {
        display: none !important;
    }
}

/* ===== Cookie Consent ===== */
#cookieConsentBanner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--secondary-color);
    color: var(--white);
    padding: var(--spacing-md);
    z-index: 99999;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
    transform: translateY(100%);
    opacity: 0;
}

.cookie-consent-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cookie-consent-text h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.cookie-consent-text p {
    font-size: 0.875rem;
    color: #C9D1D9;
    /* High contrast: 10.5:1 */
}

.cookie-consent-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.cookie-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
}

.cookie-btn-accept {
    background: var(--primary-gradient);
    color: var(--secondary-color);
}

.cookie-btn-reject {
    background: var(--gray-700);
    color: var(--white);
}
/* ===== PAGESPEED 100/100 FIXES ===== */

/* Remove all non-composited animations (color transitions cause CLS) */
a, button, .nav-link, .mobile-nav-link {
    transition: opacity 0.15s ease, transform 0.15s ease !important;
}

a:hover, button:hover {
    opacity: 0.9;
}

/* High Contrast Overrides - WCAG AA Compliance */
.hero-subtitle {
    color: #C9D1D9 !important;
}

.footer-badge span,
.footer-badge {
    color: #E6EDF3 !important;
}

/* Calculator Result High Contrast */
.calculator-result-label {
    color: #C9D1D9 !important;
}

.calculator-result-info {
    color: #8B949E !important;
}

/* CLS Prevention - Contain all major sections */
.main-content,
.hero-section,
.section,
.price-grid,
.sidebar {
    contain: layout style;
}

/* Fixed heights to prevent layout shifts */
.price-card {
    min-height: 180px;
    contain: layout;
}

.quick-stat-card {
    min-height: 160px;
    contain: layout;
}

/* Cookie banner high contrast */
#cookieConsentBanner {
    color: #E6EDF3 !important;
}

#cookieConsentBanner p {
    color: #C9D1D9 !important;
}