/**
 * 춘자네 명품김치 - 메인 스타일시트
 * Mobile First Responsive Design
 */

/* ========================================
   CSS Variables
======================================== */
:root {
    /* Primary Colors - 김치/한식 테마 */
    --primary-red: #D72631;
    --primary-red-dark: #B81D27;
    --primary-red-light: #E84855;

    /* Secondary Colors */
    --natural-green: #517A3D;
    --natural-green-dark: #3D5C2E;
    --natural-green-light: #6B9954;

    /* Accent Colors */
    --traditional-beige: #F5E6C4;
    --deep-brown: #7B5E57;
    --warm-orange: #E67E22;

    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 20px;
}

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

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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--gray-900);
}

h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 1rem;
}

/* ========================================
   Layout
======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: 60px 0;
}

@media (min-width: 768px) {
    .section {
        padding: 80px 0;
    }
}

@media (min-width: 1024px) {
    .section {
        padding: 100px 0;
    }
}

/* ========================================
   Header
======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-100);
    transition: all var(--transition-base);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo img {
    height: 40px;
    width: auto;
}

.site-logo span {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-red);
}

/* Main Navigation */
.main-nav {
    display: none;
    gap: 32px;
}

@media (min-width: 1024px) {
    .main-nav {
        display: flex;
    }
}

.main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-700);
    padding: 8px 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-red);
    transition: width var(--transition-base);
}

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

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-actions .btn {
    display: none;
}

@media (min-width: 768px) {
    .header-actions .btn {
        display: inline-flex;
    }
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    padding: 4px;
}

@media (min-width: 1024px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background: var(--white);
    z-index: 2000;
    padding: 80px 24px 40px;
    transition: right var(--transition-base);
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 32px;
    color: var(--gray-600);
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mobile-menu-nav a {
    display: block;
    padding: 16px 0;
    font-size: 17px;
    font-weight: 500;
    color: var(--gray-800);
    border-bottom: 1px solid var(--gray-100);
}

.mobile-menu-nav a:hover {
    color: var(--primary-red);
}

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 32px;
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 17px;
}

.btn-primary {
    background: var(--primary-red);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(215, 38, 49, 0.3);
}

.btn-primary:hover {
    background: var(--primary-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(215, 38, 49, 0.4);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-outline {
    background: transparent;
    color: var(--primary-red);
    border: 2px solid var(--primary-red);
}

.btn-outline:hover {
    background: var(--primary-red);
    color: var(--white);
}

.btn-green {
    background: var(--natural-green);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(81, 122, 61, 0.3);
}

.btn-green:hover {
    background: var(--natural-green-dark);
    transform: translateY(-2px);
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn-block {
    width: 100%;
}

/* ========================================
   Cards
======================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-image {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
}

.card-content {
    padding: 24px;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.card-text {
    color: var(--gray-600);
    font-size: 15px;
    line-height: 1.6;
}

/* ========================================
   Forms
======================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-label.required::after {
    content: ' *';
    color: var(--primary-red);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    color: var(--gray-800);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(215, 38, 49, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--gray-400);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    font-size: 13px;
    color: var(--primary-red);
    margin-top: 6px;
}

.form-help {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 6px;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary-red);
}

.form-check-label {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.5;
}

/* ========================================
   Page Header
======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: var(--white);
    text-align: center;
    padding: 100px 20px 60px;
    margin-top: 70px;
}

.page-header h1 {
    color: var(--white);
    margin-bottom: 12px;
}

.page-header p {
    font-size: 17px;
    opacity: 0.9;
    margin: 0;
}

/* ========================================
   Footer
======================================== */
.site-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding-top: 60px;
}

.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
    }
}

.footer-brand h3 {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: var(--radius-full);
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-red);
    color: var(--white);
}

.footer-column h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 20px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    font-size: 14px;
    color: var(--gray-400);
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px 0;
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
}

.footer-copyright {
    font-size: 14px;
    color: var(--gray-500);
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--gray-500);
}

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

/* Footer Business Info */
.footer-business {
    padding: 20px 0;
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.footer-business p {
    font-size: 13px;
    color: var(--gray-500);
    margin: 4px 0;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .footer-business p {
        font-size: 12px;
    }
}

/* ========================================
   Hero Section
======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 60px;
    background: linear-gradient(135deg, var(--traditional-beige) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-red);
    color: var(--white);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero h1 .highlight {
    color: var(--primary-red);
}

.hero p {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--gray-600);
    margin-bottom: 32px;
    max-width: 560px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

/* Hero Decorations */
.hero-decoration {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.hero-decoration-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-red);
    top: -100px;
    right: -100px;
}

.hero-decoration-2 {
    width: 300px;
    height: 300px;
    background: var(--natural-green);
    bottom: -50px;
    left: -50px;
}

/* ========================================
   Product Grid
======================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-image {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary-red);
    color: var(--white);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

.product-content {
    padding: 20px;
}

.product-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.product-desc {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 12px;
    line-height: 1.5;
}

.product-price {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-red);
}

/* ========================================
   Feature Section
======================================== */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-red-light) 0%, var(--primary-red) 100%);
    border-radius: var(--radius-xl);
    font-size: 32px;
}

.feature-item h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 14px;
    color: var(--gray-600);
    margin: 0;
}

/* ========================================
   Stats Section
======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-item {
    text-align: center;
    padding: 32px 16px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 900;
    color: var(--primary-red);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-600);
    font-weight: 500;
}

/* ========================================
   CTA Section
======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: var(--white);
    text-align: center;
    padding: 80px 20px;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn-primary {
    background: var(--white);
    color: var(--primary-red);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-primary:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

/* ========================================
   Auth Pages (Login, Register, etc.)
======================================== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 40px;
    background: var(--gray-50);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: 40px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo img {
    height: 50px;
    margin: 0 auto;
}

.auth-logo span {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-red);
    margin-top: 12px;
}

.auth-title {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.auth-subtitle {
    text-align: center;
    color: var(--gray-600);
    margin-bottom: 32px;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 24px 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

.auth-divider span {
    font-size: 13px;
    color: var(--gray-500);
}

.auth-links {
    text-align: center;
    margin-top: 24px;
}

.auth-links a {
    font-size: 14px;
    color: var(--gray-600);
}

.auth-links a:hover {
    color: var(--primary-red);
}

.auth-links .divider {
    margin: 0 12px;
    color: var(--gray-300);
}

/* ========================================
   Alert Messages
======================================== */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.alert-warning {
    background: #FEF3C7;
    color: #92400E;
    border: 1px solid #FDE68A;
}

.alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border: 1px solid #BFDBFE;
}

/* ========================================
   Utilities
======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-red); }
.text-green { color: var(--natural-green); }
.text-gray { color: var(--gray-600); }
.text-muted { color: var(--gray-400); }
.text-small { font-size: 0.875rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }

.py-1 { padding-top: 8px; padding-bottom: 8px; }
.py-2 { padding-top: 16px; padding-bottom: 16px; }
.py-3 { padding-top: 24px; padding-bottom: 24px; }
.py-4 { padding-top: 32px; padding-bottom: 32px; }
.py-5 { padding-top: 48px; padding-bottom: 48px; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.gap-4 { gap: 32px; }

.bg-white { background-color: var(--white); }
.bg-gray { background-color: var(--gray-50); }
.bg-primary { background-color: var(--primary-red); }
.bg-green { background-color: var(--natural-green); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Hide on specific breakpoints */
@media (max-width: 767px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hide-tablet { display: none !important; }
}

@media (min-width: 1024px) {
    .hide-desktop { display: none !important; }
}

/* ========================================
   Back to Top Button
======================================== */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-red);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background: var(--primary-red-dark);
    transform: translateY(-4px);
}

/* ========================================
   Skip Link (Accessibility)
======================================== */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-red);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 10000;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   Loading Spinner
======================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   Section Titles
======================================== */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}

.section-badge {
    display: inline-block;
    background: rgba(215, 38, 49, 0.1);
    color: var(--primary-red);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1rem;
    color: var(--gray-600);
    margin: 0;
}

/* ========================================
   Sitemap Page
======================================== */
.sitemap-container {
    max-width: 1000px;
    margin: 0 auto;
}

.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.sitemap-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-md);
}

.sitemap-section h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-red);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sitemap-section h3 span {
    font-size: 20px;
}

.sitemap-section ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sitemap-section a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-600);
    font-size: 14px;
    padding: 8px 0;
    transition: all var(--transition-fast);
}

.sitemap-section a:hover {
    color: var(--primary-red);
    padding-left: 8px;
}

.sitemap-section a::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--gray-300);
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.sitemap-section a:hover::before {
    background: var(--primary-red);
}