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

:root {
    --bg: #0a0e1a;
    --bg-card: #121829;
    --bg-card-hover: #1a2238;
    --border: #1e2a45;
    --text: #e0e6f0;
    --text-muted: #8892a8;
    --accent: #58a6ff;
    --accent-secondary: #3fb950;
    --accent-warn: #d29922;
    --accent-danger: #f85149;
    --accent-purple: #bc8cff;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --transition: 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

#app {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 0.25rem;
}

/* Cards */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.card h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text);
}

/* Inputs */

.input-group {
    display: flex;
    gap: 0.75rem;
}

input[type="text"],
input[type="password"] {
    flex: 1;
    padding: 0.7rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition);
}

input:focus {
    border-color: var(--accent);
}

.hint {
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.hint code {
    background: var(--bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.85em;
}

/* Auth divider */

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-divider span {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Token help */

.hint-details {
    margin-top: 0.75rem;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.hint-details summary {
    cursor: pointer;
    color: var(--accent);
    font-weight: 500;
}

.hint-details summary:hover {
    text-decoration: underline;
}

.hint-details ol {
    margin: 0.5rem 0 0.5rem 1.25rem;
    line-height: 1.8;
}

.hint-details code {
    background: var(--bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
}

.hint-details > p {
    margin-top: 0.5rem;
    font-style: italic;
}

/* Buttons */

.btn {
    padding: 0.7rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

.btn-primary:hover {
    background: #79bbff;
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
}

/* Repo list */

.repo-list {
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.repo-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.repo-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.repo-item-info {
    flex: 1;
    min-width: 0;
}

.repo-item-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.repo-item-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.repo-item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
    margin-left: 1rem;
}

.repo-item-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.private-badge {
    font-size: 0.7rem;
    padding: 0.15em 0.5em;
    background: var(--accent-warn);
    color: #000;
    border-radius: 4px;
    font-weight: 600;
    margin-left: 0.5rem;
}

/* Stats header */

.stats-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stats-header h2 {
    font-size: 1.5rem;
    margin: 0;
}

/* Overview cards grid */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-accent { color: var(--accent); }
.stat-green { color: var(--accent-secondary); }
.stat-warn { color: var(--accent-warn); }
.stat-danger { color: var(--accent-danger); }
.stat-purple { color: var(--accent-purple); }

/* Detail grids */

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.detail-item {
    padding: 0.75rem;
    background: var(--bg);
    border-radius: var(--radius-sm);
    text-align: center;
}

.detail-item .detail-value {
    font-size: 1.4rem;
    font-weight: 700;
}

.detail-item .detail-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

/* Chart containers */

.chart-container {
    position: relative;
    width: 100%;
    height: 200px;
    margin-top: 1rem;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 100%;
    padding: 0 0.5rem;
}

.bar-chart .bar {
    flex: 1;
    background: var(--accent);
    border-radius: 2px 2px 0 0;
    min-width: 3px;
    transition: background var(--transition);
    position: relative;
}

.bar-chart .bar:hover {
    background: var(--accent-purple);
}

.bar-chart .bar .bar-tooltip {
    display: none;
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
    white-space: nowrap;
    z-index: 10;
    pointer-events: none;
}

.bar-chart .bar:hover .bar-tooltip {
    display: block;
}

.chart-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 0.25rem 0.5rem 0;
}

/* Languages */

.languages-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.lang-bar-wrapper {
    width: 100%;
    height: 10px;
    background: var(--bg);
    border-radius: 5px;
    overflow: hidden;
    display: flex;
    margin-bottom: 0.75rem;
}

.lang-bar-segment {
    height: 100%;
    transition: width 0.5s ease;
}

.lang-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.lang-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.lang-name {
    flex: 1;
}

.lang-percent {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Contributors */

.contributors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
}

.contributor-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg);
    border-radius: var(--radius-sm);
}

.contributor-item img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
}

.contributor-name {
    font-weight: 600;
    font-size: 0.9rem;
}

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

/* Activity */

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    align-items: flex-start;
}

.activity-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    width: 1.5rem;
    text-align: center;
}

.activity-text {
    flex: 1;
}

.activity-text strong {
    color: var(--accent);
}

.activity-date {
    color: var(--text-muted);
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* Loading */

#loading {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 26, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Utility */

.hidden {
    display: none !important;
}

/* Scrollbar */

::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive */

@media (max-width: 600px) {
    #app {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .input-group {
        flex-direction: column;
    }

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

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

    .repo-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .repo-item-meta {
        margin-left: 0;
        margin-top: 0.5rem;
    }

    .stats-header {
        flex-direction: column;
        align-items: flex-start;
    }

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