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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* 登录覆盖层 */
.login-overlay {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #1f2937, #111827);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.login-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 32px 40px 36px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.5);
}

.login-logo {
    font-size: 20px;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 12px;
}

.login-title {
    font-size: 22px;
    font-weight: 600;
    color: #111827;
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 13px;
    color: #6b7280;
    margin-bottom: 20px;
}

.login-error {
    margin-top: 8px;
    padding: 8px 10px;
    font-size: 12px;
    color: #b91c1c;
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: 4px;
}

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* 左侧导航栏 */
.sidebar {
    width: 240px;
    background: #2c3e50;
    color: white;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.sidebar-nav {
    padding: 10px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.3s;
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.nav-item.active {
    background: rgba(52, 152, 219, 0.2);
    color: white;
    border-left: 3px solid #3498db;
}

.nav-icon {
    margin-right: 12px;
    font-size: 18px;
}

.nav-text {
    font-size: 14px;
}

/* 主内容区 */
.main-content {
    flex: 1;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

header h1 {
    color: #2c3e50;
    font-size: 28px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-success:hover {
    background: #229954;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-yellow {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffc107;
}

.btn-yellow:hover {
    background: #ffe69c;
    border-color: #ffb300;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

.filters {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.filters select,
.filters input {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

.filters input {
    flex: 1;
}

.offers-list {
    display: grid;
    gap: 15px;
}

.offer-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.offer-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

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

.offer-title {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.offer-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    font-size: 13px;
    color: #7f8c8d;
    margin-bottom: 15px;
}

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

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.status-pending { background: #fff3cd; color: #856404; }
.status-testing { background: #cfe2ff; color: #084298; }
.status-profitable { background: #d1e7dd; color: #0f5132; }
.status-unprofitable { background: #f8d7da; color: #842029; }
.status-running { background: #d4edda; color: #155724; }
.status-queued { background: #e2e3e5; color: #41464b; }

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

.offer-link {
    word-break: break-all;
    color: #3498db;
    font-size: 13px;
    margin-bottom: 10px;
}

.offer-progress {
    margin: 10px 0;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 6px;
    font-size: 13px;
}

.offer-progress .progress-text {
    color: #495057;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.offer-progress .progress-bar {
    width: 100%;
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
}

.offer-progress .progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2980b9);
    width: 0%;
    transition: width 0.3s ease;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideDown 0.3s;
}

.modal-content.small {
    max-width: 400px;
}

.close {
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #000;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
}

.empty {
    text-align: center;
    padding: 60px 20px;
    color: #95a5a6;
}

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

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

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