/* 
 * 100세로라이프 쇼핑몰 - 고급 디자인 시스템
 * 브랜드 컬러: 건강한 녹색(#2ecc71), 신뢰의 블루(#3498db), 고급스러운 네이비(#2c3e50)
 */

/* ============================================
   1. 기본 설정 & 변수
   ============================================ */
:root {
    /* 브랜드 컬러 */
    --primary-color: #2ecc71;
    --primary-dark: #27ae60;
    --primary-light: #a8e6cf;
    
    --secondary-color: #3498db;
    --secondary-dark: #2980b9;
    
    --accent-color: #e67e22;
    --accent-dark: #d35400;
    
    /* 그레이스케일 */
    --gray-900: #1a1a1a;
    --gray-800: #2c3e50;
    --gray-700: #34495e;
    --gray-600: #555;
    --gray-500: #7f8c8d;
    --gray-400: #95a5a6;
    --gray-300: #bdc3c7;
    --gray-200: #ecf0f1;
    --gray-100: #f8f9fa;
    --white: #ffffff;
    
    /* 상태 컬러 */
    --success: #2ecc71;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #3498db;
    
    /* 간격 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* 그림자 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
    
    /* 테두리 */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;
    
    /* 트랜지션 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   2. 리셋 & 기본 스타일
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, #f5f7fa 0%, #e8f5e9 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 구글 폰트 로드 */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

/* ============================================
   3. 컨테이너
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   4. 헤더 (상단 네비게이션)
   ============================================ */
header {
    background: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
}

.logo::before {
    content: '🌱';
    font-size: 1.5rem;
}

/* 네비게이션 */
nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

nav a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-base);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-base);
}

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

nav a:hover::after {
    width: 100%;
}

/* 모바일 메뉴 토글 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-700);
}

/* ============================================
   5. 버튼 시스템
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-base), height var(--transition-base);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

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

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

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #c0392b 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #27ae60 100%);
    color: var(--white);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

/* ============================================
   6. 카드 시스템
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    transition: all var(--transition-base);
    border: 1px solid rgba(46, 204, 113, 0.1);
}

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

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-full);
}

/* 통계 카드 */
.stats-card {
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-100) 100%);
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
}

.stats-card .stats-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.stats-card .stats-label {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
}

/* ============================================
   7. 폼 스타일
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.95rem;
}

.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="date"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: all var(--transition-base);
    background: var(--white);
}

.form-control:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

/* ============================================
   8. 상품 그리드
   ============================================ */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

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

.product-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-100) 100%);
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-info {
    padding: var(--spacing-lg);
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-800);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.product-price::before {
    content: '₩';
    font-size: 1.2rem;
    opacity: 0.7;
}

/* ============================================
   9. 테이블 스타일
   ============================================ */
.table-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
}

th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: var(--gray-100);
}

/* ============================================
   10. 알림 메시지
   ============================================ */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.alert::before {
    font-size: 1.5rem;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left: 4px solid var(--success);
}

.alert-success::before {
    content: '✓';
}

.alert-error,
.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid var(--danger);
}

.alert-error::before,
.alert-danger::before {
    content: '✗';
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeeba 100%);
    color: #856404;
    border-left: 4px solid var(--warning);
}

.alert-warning::before {
    content: '⚠';
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
    border-left: 4px solid var(--info);
}

.alert-info::before {
    content: 'ℹ';
}

/* ============================================
   11. 푸터
   ============================================ */
footer {
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.875rem;
}

/* ============================================
   12. 히어로 섹션
   ============================================ */
.hero {
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.95) 0%, rgba(52, 152, 219, 0.95) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    border-radius: var(--border-radius-xl);
    margin: var(--spacing-xl) 0;
    box-shadow: var(--shadow-xl);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

/* ============================================
   13. 배지 & 라벨
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.badge-success {
    background: var(--success);
    color: var(--white);
}

.badge-warning {
    background: var(--warning);
    color: var(--white);
}

.badge-danger {
    background: var(--danger);
    color: var(--white);
}

.badge-info {
    background: var(--info);
    color: var(--white);
}

.badge-primary {
    background: var(--primary-color);
    color: var(--white);
}

/* ============================================
   14. 반응형 디자인
   ============================================ */

/* 태블릿 */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-lg);
    }
}

/* 모바일 */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
    }
    
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    nav {
        width: 100%;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
        background: var(--white);
        padding: var(--spacing-md) 0;
        border-top: 1px solid var(--gray-200);
    }
    
    nav ul.active {
        display: flex;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--spacing-md);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    table {
        font-size: 0.875rem;
    }
    
    th, td {
        padding: var(--spacing-sm);
    }
}

/* 작은 모바일 */
@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .stats-card .stats-value {
        font-size: 1.5rem;
    }
}

/* ============================================
   15. 유틸리티 클래스
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

.fw-bold { font-weight: 700; }
.fw-normal { font-weight: 400; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-muted { color: var(--gray-500); }

/* ============================================
   16. 애니메이션
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

.slide-in {
    animation: slideIn var(--transition-base) ease-out;
}

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

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

/* ============================================
   16. 메인 슬라이더
   ============================================ */
.main-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #000;
}

.slider-container {
    position: relative;
    width: 100%;
    max-height: 600px;
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    display: none;
    width: 100%;
    position: relative;
}

.slide.active {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

.slide img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    display: block;
}

.slide a {
    display: block;
    position: relative;
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: white;
    padding: 3rem 0 2rem;
}

.slide-caption h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

/* 네비게이션 버튼 */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    color: var(--primary-color);
    font-weight: bold;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-nav:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.slider-nav.prev {
    left: 2rem;
}

.slider-nav.next {
    right: 2rem;
}

/* 인디케이터 */
.slider-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: 2px solid white;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.indicator:hover {
    background: rgba(255,255,255,0.8);
    transform: scale(1.2);
}

.indicator.active {
    background: white;
    width: 32px;
    border-radius: 6px;
}

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

/* 반응형 */
@media (max-width: 768px) {
    .slide img {
        height: 400px;
    }
    
    .slide-caption h2 {
        font-size: 1.75rem;
    }
    
    .slider-nav {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .slider-nav.prev {
        left: 1rem;
    }
    
    .slider-nav.next {
        right: 1rem;
    }
    
    .slider-indicators {
        bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .slide img {
        height: 300px;
    }
    
    .slide-caption {
        padding: 2rem 0 1rem;
    }
    
    .slide-caption h2 {
        font-size: 1.5rem;
    }
}