/* iOS风格 + 二次元风格样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2196F3;
    --secondary-color: #1976D2;
    --accent-color: #64B5F6;
    --bg-color: #E3F2FD;
    --card-bg: #FFFFFF;
    --text-color: #2C3E50;
    --text-light: #7F8C8D;
    --border-color: #E8E8E8;
    --shadow: 0 2px 10px rgba(33, 150, 243, 0.1);
    --shadow-hover: 0 4px 20px rgba(33, 150, 243, 0.2);
    --gradient: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    --gradient-light: linear-gradient(135deg, #64B5F6 0%, #2196F3 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

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

/* Header */
.header {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.site-title {
    font-size: 28px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.user-menu {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    background: var(--gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.3);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

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

.btn-secondary {
    background: #E8E8E8;
    color: var(--text-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background: #D8D8D8;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-block {
    width: 100%;
    display: block;
}

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

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-hover);
}

.card-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 700;
}

/* Pickup Card */
.pickup-card {
    text-align: center;
    max-width: 500px;
    margin: 0 auto 30px;
}

.pickup-form {
    margin-top: 30px;
}

.input-group {
    margin-bottom: 20px;
}

.input-code {
    width: 100%;
    padding: 18px;
    font-size: 32px;
    text-align: center;
    letter-spacing: 8px;
    border: 3px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-color);
    transition: all 0.3s ease;
    font-weight: 700;
    color: var(--text-color);
}

.input-code:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(33, 150, 243, 0.1);
}

.pickup-result {
    margin-top: 20px;
    padding: 20px;
    border-radius: 12px;
    display: none;
}

.pickup-result.show {
    display: block;
}

.pickup-result.success {
    background: #E8F5E9;
    color: #2E7D32;
    border: 2px solid #4CAF50;
}

.pickup-result.error {
    background: #FFEBEE;
    color: #C62828;
    border: 2px solid #F44336;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    font-size: 14px;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 100px);
    padding: 40px 20px;
}

.auth-card {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow);
}

.auth-form {
    margin-top: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--bg-color);
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(33, 150, 243, 0.1);
}

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

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-light);
}

.radio-group {
    display: flex;
    gap: 20px;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
    flex: 1;
}

.radio-label input[type="radio"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.radio-label:has(input:checked) {
    border-color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.auth-footer {
    margin-top: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
    border: 2px solid #F44336;
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border: 2px solid #4CAF50;
}

/* Upload Section */
.upload-section {
    margin-bottom: 20px;
}

.upload-result {
    margin-top: 20px;
    padding: 20px;
    border-radius: 12px;
    display: none;
}

.upload-result.show {
    display: block;
}

.upload-result.success {
    background: #E8F5E9;
    color: #2E7D32;
    border: 2px solid #4CAF50;
}

.upload-result.error {
    background: #FFEBEE;
    color: #C62828;
    border: 2px solid #F44336;
}

/* File List */
.file-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.file-item {
    background: var(--bg-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.file-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.file-info {
    flex: 1;
}

.file-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.file-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 14px;
    color: var(--text-light);
}

.file-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.file-actions {
    display: flex;
    gap: 10px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.empty-state p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 16px;
}

/* Admin Styles */
.admin-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 20px;
    min-height: calc(100vh - 100px);
}

.admin-sidebar {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 20px;
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 20px;
}

.admin-sidebar h3 {
    margin-bottom: 20px;
    font-size: 20px;
    color: var(--text-color);
}

.admin-menu {
    list-style: none;
}

.admin-menu li {
    margin-bottom: 10px;
}

.admin-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.admin-menu a:hover,
.admin-menu a.active {
    background: var(--gradient);
    color: white;
}

.admin-content {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.table-container {
    overflow-x: auto;
}

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

table th,
table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background: var(--bg-color);
    font-weight: 600;
    color: var(--text-color);
}

table tr:hover {
    background: var(--bg-color);
}

/* Form Styles */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
    }
    
    .admin-container {
        grid-template-columns: 1fr;
    }
    
    .admin-sidebar {
        position: static;
    }
    
    .input-code {
        font-size: 24px;
        letter-spacing: 4px;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .file-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .file-actions {
        width: 100%;
    }
    
    .file-actions .btn {
        flex: 1;
    }
}

/* 二次元风格装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(33, 150, 243, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(25, 118, 210, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card,
.auth-card {
    animation: fadeIn 0.5s ease;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}