/* ═══════════════════════════════════════════════════════════════
   FlightDeck — Premium Dark Theme Design System
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Variables ──────────────────────────────────────────────── */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-card-hover: rgba(31, 41, 55, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-active: rgba(139, 92, 246, 0.5);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-primary: #8b5cf6;
    --accent-primary-glow: rgba(139, 92, 246, 0.3);
    --accent-secondary: #06b6d4;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;

    --gradient-primary: linear-gradient(135deg, #8b5cf6, #06b6d4);
    --gradient-success: linear-gradient(135deg, #10b981, #06b6d4);
    --gradient-warning: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-card: linear-gradient(145deg, rgba(139, 92, 246, 0.05), rgba(6, 182, 212, 0.05));

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.15);

    --sidebar-width: 260px;
    --header-height: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { font-size: 15px; scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

/* ── Layout ────────────────────────────────────────────────── */
.app-container { display: flex; min-height: 100vh; }

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    display: flex; flex-direction: column;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-brand {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; gap: 12px;
}

.sidebar-brand-icon {
    width: 40px; height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 800; color: white;
    box-shadow: var(--shadow-glow);
}

.sidebar-brand-text {
    font-size: 1.25rem; font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 0.7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: 0 12px; margin-bottom: 8px;
}

.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 12px; border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem; font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
}

.nav-item:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(139, 92, 246, 0.12);
    color: var(--accent-primary);
    box-shadow: inset 3px 0 0 var(--accent-primary);
}

.nav-item-icon {
    width: 20px; height: 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
}

.nav-item-badge {
    margin-left: auto;
    background: var(--accent-primary);
    color: white;
    font-size: 0.7rem; font-weight: 700;
    padding: 2px 8px; border-radius: 99px;
    min-width: 22px; text-align: center;
}

/* ── Main Content ──────────────────────────────────────────── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.page-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0; z-index: 50;
}

.page-title {
    font-size: 1.5rem; font-weight: 700;
    margin-bottom: 4px;
}

.page-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.page-body { padding: 32px; }

/* ── Cards ─────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

.card:hover {
    border-color: var(--border-active);
    box-shadow: var(--shadow-glow);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
}

.card-header-title {
    font-size: 1rem; font-weight: 600;
}

.card-body { padding: 24px; }

/* ── Stat Cards ────────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: relative; overflow: hidden;
    transition: var(--transition);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.stat-card.purple::before { background: var(--gradient-primary); }
.stat-card.green::before { background: var(--gradient-success); }
.stat-card.blue::before { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.stat-card.orange::before { background: var(--gradient-warning); }

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    border-color: var(--border-active);
}

.stat-label {
    font-size: 0.8rem; font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 2rem; font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-card.green .stat-value {
    background: var(--gradient-success);
    -webkit-background-clip: text; background-clip: text;
}

.stat-card.blue .stat-value {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    -webkit-background-clip: text; background-clip: text;
}

.stat-card.orange .stat-value {
    background: var(--gradient-warning);
    -webkit-background-clip: text; background-clip: text;
}

.stat-change {
    font-size: 0.75rem; color: var(--text-muted); margin-top: 4px;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 20px; border: none; border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif; font-size: 0.875rem; font-weight: 600;
    cursor: pointer; transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary); color: white;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}
.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.5);
    transform: translateY(-1px);
    color: white;
}

.btn-success {
    background: var(--gradient-success); color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}
.btn-success:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.5);
    transform: translateY(-1px);
    color: white;
}

.btn-danger {
    background: var(--gradient-warning); color: white;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.5);
    transform: translateY(-1px);
    color: white;
}

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

.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* ── Forms ─────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }

.form-label {
    display: block; font-size: 0.85rem; font-weight: 600;
    color: var(--text-secondary); margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
    width: 100%; padding: 10px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif; font-size: 0.9rem;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-textarea { resize: vertical; min-height: 100px; }

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

/* ── Tables ────────────────────────────────────────────────── */
.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.75rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    background: rgba(139, 92, 246, 0.04);
}

.data-table td {
    padding: 12px 16px;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.data-table tr:hover td {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.data-table td:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.data-table td:last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

/* ── Status Badges ─────────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px; border-radius: 99px;
    font-size: 0.72rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.03em;
}

.badge-pending { background: rgba(100, 116, 139, 0.15); color: #94a3b8; }
.badge-processing { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.badge-success { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.badge-ready { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }
.badge-failed { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.badge-published { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }
.badge-active { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.badge-inactive { background: rgba(239, 68, 68, 0.15); color: #f87171; }

/* ── Progress Bar ──────────────────────────────────────────── */
.progress {
    width: 100%; height: 8px;
    background: var(--bg-glass);
    border-radius: 99px; overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 99px;
    transition: width 0.5s ease;
}

.progress-bar.green { background: var(--gradient-success); }

/* ── Alerts ────────────────────────────────────────────────── */
.alert {
    padding: 14px 20px; border-radius: var(--radius-md);
    margin-bottom: 20px;
    border-left: 3px solid;
    font-size: 0.875rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-success); color: #34d399;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-danger); color: #f87171;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-info); color: #60a5fa;
}

/* ── Empty State ───────────────────────────────────────────── */
.empty-state {
    text-align: center; padding: 60px 24px;
    color: var(--text-muted);
}

.empty-state-icon { font-size: 3rem; margin-bottom: 16px; opacity: 0.4; }
.empty-state-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-secondary); }
.empty-state-text { font-size: 0.875rem; margin-bottom: 20px; }

/* ── Pagination ────────────────────────────────────────────── */
.pagination {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    margin-top: 24px;
}

.pagination a, .pagination span {
    padding: 8px 14px; border-radius: var(--radius-sm);
    font-size: 0.85rem; font-weight: 500;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition);
}

.pagination a:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-active);
    color: var(--text-primary);
}

.pagination .active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* ── Grid Helpers ──────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ── Modal ─────────────────────────────────────────────────── */
.modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex; align-items: center; justify-content: center;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%; max-width: 600px;
    max-height: 80vh; overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: space-between;
}

.modal-title { font-size: 1.1rem; font-weight: 700; }

.modal-close {
    background: none; border: none; color: var(--text-muted);
    font-size: 1.5rem; cursor: pointer; transition: var(--transition);
    padding: 4px;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body { padding: 24px; }
.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex; justify-content: flex-end; gap: 12px;
}

/* ── Upload Area ───────────────────────────────────────────── */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.05);
}

.upload-area-icon { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.5; }
.upload-area-text { font-size: 0.95rem; color: var(--text-secondary); }
.upload-area-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 8px; }

/* ── Toggle Switch ─────────────────────────────────────────── */
.toggle {
    position: relative; display: inline-block;
    width: 44px; height: 24px;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
    position: absolute; inset: 0;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 99px;
    cursor: pointer; transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute; left: 3px; top: 3px;
    width: 16px; height: 16px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: var(--transition);
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: white;
}

/* ── Action Bar ────────────────────────────────────────────── */
.action-bar {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    margin-bottom: 24px; flex-wrap: wrap;
}

.action-bar-left { display: flex; align-items: center; gap: 12px; }
.action-bar-right { display: flex; align-items: center; gap: 12px; }

/* ── Pulse Animation ──────────────────────────────────────── */
.pulse { animation: pulse 2s infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ── Skeleton Loading ──────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg, var(--bg-glass) 25%, var(--bg-glass-hover) 50%, var(--bg-glass) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .sidebar { width: 70px; }
    .sidebar-brand-text, .nav-item span, .nav-section-title { display: none; }
    .sidebar-brand { padding: 20px 15px; justify-content: center; }
    .nav-item { padding: 10px; justify-content: center; }
    .nav-item-badge { display: none; }
    .main-content { margin-left: 70px; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Code Preview ──────────────────────────────────────────── */
.code-preview {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    overflow-x: auto;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
}

/* ── Inline Flex Helpers ───────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 300px; }