@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --bg-primary: #0f0f13;
    --bg-secondary: #1a1a24;
    --bg-tertiary: #242435;
    --bg-card: #1e1e2e;
    --bg-hover: #2a2a3e;
    --bg-input: #16161f;
    --border-color: #2e2e42;
    --text-primary: #e4e4f0;
    --text-secondary: #8888a4;
    --text-muted: #555570;
    --accent: #6c5ce7;
    --accent-hover: #7c6df7;
    --accent-glow: rgba(108, 92, 231, 0.3);
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #e17055;
    --danger-hover: #f07060;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 184, 148, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(225, 112, 85, 0.04) 0%, transparent 50%);
    color: var(--text-primary);
    overflow: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Layout ──────────────────────────────────────── */
.app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────── */
.sidebar {
    width: 220px;
    min-width: 220px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    transition: transform 0.25s ease, width 0.25s ease;
    z-index: 100;
}

.sidebar-brand {
    padding: 0 20px 24px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand svg { width: 28px; height: 28px; }

.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 2px; padding: 0 8px; }

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.15s ease;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.sidebar-link:hover { background: var(--bg-hover); color: var(--text-primary); }
.sidebar-link.active { background: var(--accent); color: #fff; box-shadow: 0 2px 12px var(--accent-glow); }
.sidebar-link svg { width: 20px; height: 20px; flex-shrink: 0; }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ── Main ─────────────────────────────────────────── */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(26, 26, 36, 0.6);
    backdrop-filter: blur(12px);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 4px;
}

.menu-toggle svg { width: 24px; height: 24px; }

.url-input-group {
    flex: 1;
    display: flex;
    gap: 8px;
    max-width: 900px;
}

.url-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.url-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.url-input::placeholder { color: var(--text-muted); }

select.url-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238888a4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.1); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-danger-ghost {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}
.btn-danger-ghost:hover { background: var(--danger); color: #fff; }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

/* ── Content ──────────────────────────────────────── */
.content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.content::-webkit-scrollbar { width: 6px; }
.content::-webkit-scrollbar-track { background: transparent; }
.content::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ── Cards ────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

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

.card-title { font-size: 1.1rem; font-weight: 600; }

/* ── Grid ─────────────────────────────────────────── */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ── Form ─────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--accent); }
textarea.form-input { resize: vertical; min-height: 100px; }

/* ── Table ────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
    text-align: left;
    padding: 10px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}
td {
    padding: 12px 14px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}
tr:hover td { background: var(--bg-hover); }

/* ── Status Badges ────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-active { background: rgba(0, 184, 148, 0.15); color: var(--success); }
.badge-paused { background: rgba(136, 136, 164, 0.15); color: var(--text-secondary); }
.badge-downloading { background: rgba(108, 92, 231, 0.15); color: var(--accent); }
.badge-completed { background: rgba(0, 184, 148, 0.15); color: var(--success); }
.badge-failed { background: rgba(225, 112, 85, 0.15); color: var(--danger); }
.badge-pending { background: rgba(253, 203, 110, 0.15); color: var(--warning); }
.badge-cancelled { background: rgba(136, 136, 164, 0.1); color: var(--text-muted); }

/* ── Progress Bar ─────────────────────────────────── */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    transition: width 0.4s ease;
}

/* ── Modal ────────────────────────────────────────── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 200;
    align-items: center;
    justify-content: center;
}
.modal-overlay.open { display: flex; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px;
    width: 90%;
    max-width: 520px;
    box-shadow: var(--shadow);
}

.modal-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 20px; }

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
}

/* ── Stats ────────────────────────────────────────── */
.stat-value { font-size: 2rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 6px; }

/* ── Source Cards ─────────────────────────────────── */
.source-row { display: flex; align-items: center; gap: 14px; }
.source-meta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.source-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ── Empty State ──────────────────────────────────── */
.empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}
.empty svg { width: 48px; height: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-text { font-size: 0.95rem; }

/* ── Toast ────────────────────────────────────────── */
.toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.85rem;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    max-width: 360px;
}
.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        width: 260px;
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar.open ~ .main::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }
    .menu-toggle { display: block; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .topbar { padding: 12px 16px; }
    .url-input-group { flex-wrap: wrap; }
    .content { padding: 16px; }
    .modal { width: 95%; padding: 20px; }
    .card { padding: 14px; }
    table th, table td { padding: 8px 10px; font-size: 0.85rem; }
    .badge { font-size: 0.7rem; padding: 3px 8px; }
    .btn { padding: 8px 14px; font-size: 0.85rem; }
    .btn-sm { padding: 5px 10px; font-size: 0.75rem; }

    .source-row { flex-direction: column; align-items: flex-start !important; gap: 10px; }
    .source-meta { flex-wrap: wrap; gap: 8px; }
    .source-actions { width: 100%; display: flex; gap: 6px; flex-wrap: wrap; }
    .source-actions .btn { flex: 1; min-width: 0; justify-content: center; }
}

@media (max-width: 480px) {
    .stat-value { font-size: 1.4rem; }
    .stat-label { font-size: 0.7rem; }
    .grid { gap: 10px; }
    .sidebar { width: 240px; }
    .topbar { flex-wrap: wrap; }
    .topbar h1 { font-size: 1rem !important; }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar { width: 60px; min-width: 60px; }
    .sidebar-brand span, .sidebar-link span, .sidebar-footer span { display: none; }
    .sidebar-brand { justify-content: center; padding: 0 0 20px; }
    .sidebar-link { justify-content: center; padding: 10px; }
    .sidebar-link svg { margin: 0; }
    .sidebar-footer { text-align: center; }
}