/* ========================================
   AI Alpha Radar - Style System
   ======================================== */

/* CSS Variables - Light Mode (Default) */
:root {
    --color-bg: #f8f9fc;
    --color-bg-secondary: #ffffff;
    --color-bg-card: #ffffff;
    --color-bg-card-hover: #f3f4f8;
    --color-text: #1a1a2e;
    --color-text-secondary: #4a4a6a;
    --color-text-muted: #8888a0;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-alpha: #dc2626;
    --color-hot: #d97706;
    --color-border: #e2e4ea;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --transition: all 0.2s ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --color-bg: #0f0f1a;
    --color-bg-secondary: #1a1a2e;
    --color-bg-card: #1e1e32;
    --color-bg-card-hover: #252542;
    --color-text: #e8e8f0;
    --color-text-secondary: #9898b0;
    --color-text-muted: #6868a0;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-alpha: #ff6b6b;
    --color-hot: #fbbf24;
    --color-border: #2a2a45;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.navbar .container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-subtitle {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    padding-left: 16px;
    border-left: 1px solid var(--color-border);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 32px 0;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 48px;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--color-text), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
}

/* Track List */
.track-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

/* Track Card */
.track-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.track-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.track-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 8px;
}

.track-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

/* Score Badge */
.score-badge {
    display: flex;
    align-items: baseline;
    gap: 2px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    flex-shrink: 0;
}

.score-alpha {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.2), rgba(255, 107, 107, 0.1));
    color: var(--color-alpha);
    border: 1px solid rgba(255, 107, 107, 0.3);
}

.score-hot {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(251, 191, 36, 0.1));
    color: var(--color-hot);
    border: 1px solid rgba(251, 191, 36, 0.3);
}

.score-normal {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.score-value {
    font-size: 0.9rem;
}

.score-max {
    font-size: 0.7rem;
    opacity: 0.7;
}

.score-large .score-value {
    font-size: 1.75rem;
}

/* Tags */
.track-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 10px;
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    color: var(--color-text-secondary);
}

.tag-more {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.tag-category {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.tag-tech {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--color-success);
    color: var(--color-success);
}

/* Track Analysis */
.track-analysis {
    display: flex;
    gap: 8px;
    padding: 10px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    flex: 1;
}

.analysis-icon {
    flex-shrink: 0;
}

.analysis-text {
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Track Trend Chart */
.track-trend {
    --accent-color: var(--color-primary-light);
    --bg-card: var(--color-bg-card);
    padding: 10px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    flex: 1;
}

.track-card:hover .track-trend {
    --accent-color: var(--color-accent);
}

.trend-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.trend-chart {
    display: flex;
    flex-direction: column;
}

.trend-svg {
    width: 100%;
    height: 120px;
    overflow: visible;
}

.trend-score-label {
    font-family: var(--font-family);
}


/* Track Footer */
.track-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 8px;
}

.update-time {
    color: var(--color-text-muted);
    font-size: 0.7rem;
}

.view-detail {
    color: var(--color-primary-light);
    font-weight: 500;
    font-size: 0.75rem;
}

/* ========================================
   Detail Page Styles
   ======================================== */

.back-link {
    display: inline-block;
    color: var(--color-text-secondary);
    text-decoration: none;
    margin-bottom: 24px;
    padding: 8px 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.back-link:hover {
    background: var(--color-bg-card);
    color: var(--color-text);
}

/* Detail Header */
.detail-header {
    background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-secondary));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 32px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.track-title {
    font-size: 2rem;
    font-weight: 700;
}

.header-meta {
    display: flex;
    gap: 24px;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: 20px;
}

.meta-label {
    color: var(--color-text-secondary);
}

.overview-analysis {
    padding: 20px;
    background: var(--color-bg);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: normal;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* Evidence Wall */
.evidence-wall {
    margin-top: 32px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

/* Source Tabs */
.source-tabs {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tabs-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 12px 16px;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-family);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.tab-btn:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border);
    color: var(--color-text);
}

.tab-btn.active {
    background: var(--color-bg-card);
    border-color: var(--color-primary);
    color: var(--color-text);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.tab-icon {
    font-size: 1rem;
}

.tab-name {
    font-weight: 500;
}

.tab-score {
    padding: 2px 8px;
    background: rgba(245, 158, 11, 0.15);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.75rem;
}

.tab-btn.active .tab-score {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary-light);
}

.tabs-content {
    padding: 0;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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

/* Update source-section for inside tabs */
.tabs-content .source-section {
    background: transparent;
    border: none;
    border-radius: 0;
    margin-bottom: 0;
}

/* Responsive tabs */
@media (max-width: 768px) {
    .tabs-nav {
        flex-direction: column;
        gap: 8px;
    }

    .tab-btn {
        width: 100%;
        justify-content: flex-start;
    }
}

/* Source Section */
.source-section {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.source-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.source-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.source-icon {
    font-size: 1.5rem;
}

.source-name {
    font-size: 1.125rem;
    font-weight: 600;
}

.source-score {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.source-score strong {
    color: var(--color-accent);
    font-size: 1.125rem;
}

.source-analysis {
    padding: 16px;
    background: var(--color-bg-secondary);
    border-left: 3px solid var(--color-text-muted);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
}

/* Project Card */
.project-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--color-primary);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.project-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.project-score {
    flex-shrink: 0;
    padding: 4px 10px;
    background: rgba(245, 158, 11, 0.15);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.875rem;
}

.project-reason {
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--color-accent);
    padding: 12px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-text);
    font-size: 0.9375rem;
    margin-bottom: 12px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

/* Metrics Audit */
.metrics-audit {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: 16px;
}

.metrics-title {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 12px;
    color: var(--color-text-secondary);
}

.metrics-list {
    list-style: none;
}

.metric-item {
    display: flex;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.metric-item:last-child {
    border-bottom: none;
}

.metric-key {
    color: var(--color-text-muted);
    min-width: 100px;
}

.metric-value {
    color: var(--color-text-secondary);
}

/* No Projects */
.no-projects {
    text-align: center;
    padding: 32px;
    color: var(--color-text-muted);
}

.no-projects-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 8px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 64px 24px;
    background: var(--color-bg-card);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
}

.empty-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
}

.empty-state p {
    color: var(--color-text-muted);
}

/* Error Page */
.error-page {
    text-align: center;
    padding: 80px 24px;
}

.error-icon {
    font-size: 5rem;
    display: block;
    margin-bottom: 16px;
}

.error-page h1 {
    font-size: 6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.error-message {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

/* Button */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-1px);
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1400px) {
    .track-list {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1100px) {
    .track-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .track-list {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .navbar .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .nav-subtitle {
        border-left: none;
        padding-left: 0;
    }
}

@media (max-width: 480px) {
    .track-list {
        grid-template-columns: 1fr;
    }
}

/* Project Link Styles */
.project-link {
    color: var(--color-text);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--color-primary-light);
}

.project-link .link-icon {
    font-size: 0.75rem;
    opacity: 0.6;
    transition: var(--transition);
}

.project-link:hover .link-icon {
    opacity: 1;
    transform: translateX(2px);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: var(--transition);
    margin-left: auto;
}

.theme-toggle:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-primary);
    color: var(--color-text);
}

.theme-toggle .theme-icon {
    font-size: 1rem;
}

.theme-toggle .theme-label {
    font-weight: 500;
}