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

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #dc3545;
    --text-primary: #333;
    --text-secondary: #666;
    --border-color: #e8e8e8;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    background-size: 400% 400%;
    background-attachment: fixed;
    animation: gradientBG 15s ease infinite;
    min-height: 100vh;
    padding: 20px;
    position: relative;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(3px);
    z-index: -1;
}

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

.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 35px;
    margin-bottom: 25px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    padding: 14px 32px;
    border: none;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    list-style: none;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    transform: scale(1.02);
}

.admin-button {
    padding: 10px 24px;
    border: none;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.admin-button:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* 小标题样式 */
.banner-title-text {
    background: var(--primary);
    color: white;
    text-align: center;
    padding: 20px 30px;
    border-radius: 16px;
    margin-bottom: 25px;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    backdrop-filter: blur(10px);
}

.success-message {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border-left: 4px solid #10b981;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.15);
}

.error-message {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border-left: 4px solid #dc3545;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.15);
}

.card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 35px;
    margin-bottom: 25px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 20px;
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    background: var(--primary);
    color: white;
    padding: 25px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    margin: 0;
    font-size: 1.5em;
    font-weight: 600;
}

.modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 28px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.modal-body {
    padding: 30px;
    overflow-y: auto;
    max-height: calc(85vh - 80px);
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.list {
    list-style: none;
}

.list-item {
    padding: 15px 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #f0f0f0 100%);
    border-radius: 12px;
    margin-bottom: 10px;
    border-left: 4px solid var(--primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.3s;
}

.list-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.1);
}

.btn {
    padding: 14px 35px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e8e8e8;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s;
    background: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.commission-status {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    display: inline-block;
}

.commission-status.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.commission-status.accepted {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
}

.commission-status.completed {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

/* 公告卡片样式 */
.announcements-section {
    padding: 10px 0;
}

.announcements-section h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

.announcements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.announcement-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.announcement-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 
        0 15px 45px rgba(102, 126, 234, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
}

.announcement-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.announcement-content {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.announcement-title {
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.4;
}

.announcement-text {
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 20px;
    flex: 1;
}

.announcement-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

/* 委托卡片样式 */
.commissions-section {
    padding: 10px 0;
}

.commissions-section h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
}

.commission-tabs {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 16px;
}

.tab-button {
    padding: 12px 28px;
    border: none;
    border-radius: 25px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.tab-button:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
}

.tab-button.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.commissions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.commission-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 28px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.commission-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
    opacity: 0;
    transition: opacity 0.3s;
}

.commission-card:hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 45px rgba(102, 126, 234, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
}

.commission-card:hover::before {
    opacity: 1;
}

.commission-card.pending::before {
    background: var(--warning);
    opacity: 1;
}

.commission-card.accepted::before {
    background: var(--primary);
    opacity: 1;
}

.commission-card.completed::before {
    background: var(--success);
    opacity: 1;
}

.commission-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.commission-title {
    color: var(--primary);
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.4;
    flex: 1;
}

.commission-description {
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 18px;
    font-size: 0.95rem;
}

.commission-meta {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.commission-meta-item {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    background: linear-gradient(135deg, #f8f9fa 0%, #f0f0f0 100%);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.commission-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.875rem;
    border-radius: 20px;
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545 0%, #b91c1c 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(107, 114, 128, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(107, 114, 128, 0.4);
}

.image-preview {
    max-width: 100%;
    max-height: 200px;
    border-radius: 12px;
    margin-top: 10px;
    object-fit: cover;
}

/* 管理页面样式 */
.admin-section {
    padding: 10px 0;
}

.admin-section h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.12),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.admin-form {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 35px;
    margin-bottom: 25px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.admin-form h3 {
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 25px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background: white;
    border-radius: 12px;
    overflow: hidden;
}

.admin-table thead {
    background: var(--primary);
    color: white;
}

.admin-table th,
.admin-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e8e8e8;
}

.admin-table tbody tr {
    transition: background-color 0.2s;
}

.admin-table tbody tr:hover {
    background-color: #f8f9fa;
}

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

/* 委托表单页面样式 */
.commission-form-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 10px 0;
}

.commission-form-section h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

.commission-form-section form {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 2px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

/* 个人中心页面样式 */
.profile-section {
    padding: 10px 0;
}

.profile-section h1 {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    .container {
        max-width: 100%;
    }

    .header {
        padding: 25px 20px;
        border-radius: 15px;
    }

    .header-container {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .nav-item {
        width: 100%;
        text-align: center;
    }

    .card {
        padding: 25px 20px;
        border-radius: 15px;
    }

    .modal-content {
        width: 95%;
        border-radius: 15px;
    }

    .modal-header {
        padding: 20px;
    }

    .modal-body {
        padding: 20px;
    }
}