/* 기본 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 헤더 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-buttons, .user-menu, .admin-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.user-name {
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 500;
    font-size: 0.9rem;
}

/* 히어로 섹션 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0 6rem;
    position: relative;
    overflow: hidden;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: #e0e7ff;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    animation: fadeInUp 1s ease-out 0.4s both;
}

/* 눈 내리는 효과 */
.snow-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.snowflake {
    position: absolute;
    top: -10%;
    font-size: 2rem;
    opacity: 0.7;
    animation: snowfall 6s linear infinite;
}

.snowflake:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 6s;
}

.snowflake:nth-child(2) {
    left: 30%;
    animation-delay: 2s;
    animation-duration: 8s;
}

.snowflake:nth-child(3) {
    left: 60%;
    animation-delay: 4s;
    animation-duration: 7s;
}

.snowflake:nth-child(4) {
    left: 80%;
    animation-delay: 1s;
    animation-duration: 9s;
}

@keyframes snowfall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    90% {
        opacity: 0.7;
    }
    100% {
        transform: translateY(calc(100vh + 100px)) rotate(360deg);
        opacity: 0;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 카테고리 네비게이션 */
.category-nav {
    background: white;
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.category-tab {
    background: #f1f5f9;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #64748b;
}

.category-tab:hover, .category-tab.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 상품 섹션 */
.products {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid #e2e8f0;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    border-radius: 12px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

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

.product-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.product-price {
    font-size: 1.4rem;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 0.25rem;
}

.product-deposit {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 1rem;
}

.product-description {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

/* 버튼 스타일 */
.btn {
    border: none;
    border-radius: 25px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-family: inherit;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: #f1f5f9;
    color: #475569;
}

.btn-secondary:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
}

.btn-admin {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
}

.btn-admin:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* CTA 섹션 */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #e0e7ff;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-content.large {
    max-width: 900px;
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #1e293b;
    font-size: 1.5rem;
    font-weight: 600;
}

.close {
    color: #64748b;
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #1e293b;
}

.modal-body {
    padding: 1rem 2rem 2rem;
}

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

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 폼 스타일 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.user-type-selection {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
}

.user-type-selection label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.demo-accounts {
    background: #f8fafc;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    border-left: 4px solid #3b82f6;
}

.demo-accounts h4 {
    margin: 0 0 0.5rem 0;
    color: #1e293b;
    font-size: 0.9rem;
}

.demo-accounts p {
    margin: 0.25rem 0;
    font-size: 0.8rem;
    color: #64748b;
}

.demo-account-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.8rem;
    background: linear-gradient(135deg, #ffffff, #f5f5f5);
    border: 2px solid #2196f3;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    line-height: 1.3;
    font-size: 0.85rem;
}

.demo-account-btn:hover {
    background: linear-gradient(135deg, #2196f3, #1976d2);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.demo-account-btn:active {
    transform: translateY(0);
}

/* 상품 상세 모달 */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.product-detail .product-image {
    height: 300px;
}

.price-info {
    margin-bottom: 1.5rem;
}

.price {
    font-size: 1.8rem;
    font-weight: 700;
    color: #3b82f6;
    display: block;
}

.deposit {
    font-size: 1rem;
    color: #64748b;
}

.rental-form {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1.5rem;
}

.rental-form h4 {
    margin: 0 0 1rem 0;
    color: #1e293b;
}

.total-calculation {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    border: 1px solid #e2e8f0;
}

.calculation-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.calculation-row.total {
    border-top: 2px solid #e2e8f0;
    padding-top: 0.5rem;
    margin-top: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    color: #1e293b;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .product-detail {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .category-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    
    .modal-content {
        margin: 2% auto;
        width: 95%;
    }
}

/* 스크롤바 스타일 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}