:root {
    --primary-color: #3b82f6;
    /* Lighter blue for better contrast */
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #0f172a;
    /* Darker text for readability */
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --sidebar-width: 260px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 50;
    transition: transform 0.3s ease;
}

/* Mobile Toggle & Overlay */
.mobile-menu-btn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    z-index: 60;
    cursor: pointer;
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background-color 0.2s;
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 40;
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.3s;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-menu {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.2s;
}

.nav-item:hover,
.nav-item.active {
    background-color: #eff6ff;
    color: var(--primary-color);
    font-weight: 500;
}

.scheduler-status {
    background-color: #f8fafc;
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #ccc;
}

.status-dot.active {
    background-color: var(--success-color);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

.status-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    max-width: 1600px;
    /* Increased max-width */
    width: 100%;
    transition: margin-left 0.3s ease;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Cards & Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    /* More modern radius */
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

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

.stat-card {
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.bg-blue {
    background-color: #eff6ff;
    color: var(--primary-color);
}

.bg-green {
    background-color: #f0fdf4;
    color: var(--success-color);
}

.bg-purple {
    background-color: #f3e8ff;
    color: #a855f7;
}

.stat-info h3 {
    font-size: 1.8rem;
    margin-bottom: 4px;
}

.stat-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-secondary {
    background-color: #e2e8f0;
    color: var(--text-color);
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
}

.btn-xs {
    padding: 4px 8px;
    font-size: 0.8rem;
    border-radius: 4px;
    border: 1px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    cursor: pointer;
}

.full-width {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

th,
td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Reports Grid */
.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.report-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.report-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.report-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

.tag {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 4px;
    background-color: #f1f5f9;
}

.tag.analysis-done {
    background-color: #dcfce7;
    color: #166534;
}

.tag.analysis-pending {
    background-color: #fef9c3;
    color: #854d0e;
}

.tag.analysis-processing {
    background-color: #dbeafe;
    color: #1d4ed8;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

.report-title {
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
}

.report-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Modal - Enhanced UX */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px;
    overflow-y: auto;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 32px;
    border-radius: 16px;
    width: 500px;
    max-width: 100%;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-content.large {
    width: 1000px;
    max-height: none;
    /* Allow full height */
}

/* Enhanced Close Button */
.close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    background: #f1f5f9;
    border-radius: 8px;
    transition: all 0.2s;
    z-index: 10;
}

.close:hover {
    background: #e2e8f0;
    color: var(--text-color);
}

/* Modal Header */
.modal-header {
    margin-bottom: 24px;
    padding-right: 40px;
    /* Space for close button */
}

.modal-header h2 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* Modal Body - Improved Readability */
.modal-body {
    max-height: 60vh;
    overflow-y: auto;
    padding-right: 8px;
}

.modal-body::-webkit-scrollbar {
    width: 6px;
}

.modal-body::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 3px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Modal Footer */
.modal-footer {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    margin-top: -10px;
    /* 拉近与 Header 的距离 */
}

.tab-btn {
    padding: 10px 16px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-muted);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Markdown Styles */
.markdown-body {
    font-size: 0.95rem;
    color: #334155;
    line-height: 1.7;
}

.markdown-body h2 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-size: 1.25rem;
    color: #1e293b;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 8px;
}

.markdown-body h3 {
    margin-top: 20px;
    margin-bottom: 12px;
    font-size: 1.1rem;
    color: #334155;
    font-weight: 600;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.markdown-body li {
    margin-bottom: 6px;
}

.markdown-body p {
    margin-bottom: 16px;
}

.markdown-body strong {
    color: #0f172a;
    font-weight: 600;
}

.markdown-body blockquote {
    border-left: 4px solid #3b82f6;
    background: #eff6ff;
    padding: 12px 16px;
    margin-left: 0;
    margin-bottom: 16px;
    border-radius: 0 4px 4px 0;
    color: #475569;
}

/* Modern Filters */
.filters-container {
    display: flex;
    gap: 12px;
    align-items: center;
    background: #fff;
    padding: 6px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.filter-group {
    position: relative;
    display: flex;
    align-items: center;
}

.filter-icon {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    font-size: 0.85rem;
    pointer-events: none;
    z-index: 10;
}

.modern-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 8px 32px 8px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-color);
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 14px;
    transition: all 0.2s;
    min-width: 120px;
    font-family: inherit;
}

.filter-group:first-child .modern-select {
    padding-left: 32px;
    /* For the filter icon */
}

.modern-select:hover {
    background-color: #f8fafc;
    border-color: #e2e8f0;
}

.modern-select:focus {
    outline: none;
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.list-container {
    max-height: 400px;
    overflow-y: auto;
}

.log-item {
    font-size: 0.85rem;
    padding: 8px 0;
    border-bottom: 1px solid #f1f5f9;
}

.log-time {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding: 20px;
        padding-bottom: 80px;
        /* Space for mobile button */
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .reports-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .page-header .actions,
    .filters-container {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .filter-group {
        flex: 1;
        min-width: 120px;
    }

    .modern-select {
        width: 100%;
        background-color: #f8fafc;
        /* Slightly easier to see on mobile */
        border-color: #e2e8f0;
    }

    .modal-content {
        width: 95%;
        padding: 20px;
    }
}