/* === S+ Pilot — Clean Corporate Theme === */

:root {
    --sp-primary: #1a56db;
    --sp-primary-hover: #1648b8;
    --sp-primary-light: #e8eefb;
    --sp-dark: #1e293b;
    --sp-gray-50: #f8fafc;
    --sp-gray-100: #f1f5f9;
    --sp-gray-200: #e2e8f0;
    --sp-gray-300: #cbd5e1;
    --sp-gray-500: #64748b;
    --sp-gray-700: #334155;
    --sp-gray-900: #0f172a;
    --sp-success: #059669;
    --sp-danger: #dc2626;
}

body {
    background-color: var(--sp-gray-50);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--sp-gray-900);
}

/* --- Navbar --- */
.navbar {
    background-color: var(--sp-dark) !important;
    padding: 0.75rem 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: #fff !important;
}

.navbar .nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75) !important;
    transition: color 0.15s;
}

.navbar .nav-link:hover {
    color: #fff !important;
}

.navbar .btn-link.nav-link {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.6) !important;
}

.navbar .btn-link.nav-link:hover {
    color: #fff !important;
}

.navbar .nav-link .bi-person-circle {
    font-size: 1.4rem;
    vertical-align: middle;
}

/* --- Page Header --- */
.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--sp-gray-200);
}

.page-header h2 {
    font-weight: 700;
    font-size: 1.75rem;
    color: var(--sp-gray-900);
    margin-bottom: 0.25rem;
}

.page-header p {
    color: var(--sp-gray-500);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* --- Cards --- */
.card {
    border: 1px solid var(--sp-gray-200);
    border-radius: 0.625rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    background: #fff;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--sp-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 1rem;
}

/* --- Upload Area --- */
.upload-area {
    border: 2px dashed var(--sp-gray-300);
    border-radius: 0.5rem;
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: var(--sp-gray-50);
    transition: border-color 0.2s, background-color 0.2s;
    cursor: pointer;
    position: relative;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--sp-primary);
    background: var(--sp-primary-light);
}

.upload-area .upload-icon {
    font-size: 2.5rem;
    color: var(--sp-gray-300);
    margin-bottom: 0.75rem;
    transition: color 0.2s;
}

.upload-area:hover .upload-icon {
    color: var(--sp-primary);
}

.upload-area .upload-text {
    color: var(--sp-gray-500);
    font-size: 0.95rem;
}

.upload-area .upload-text strong {
    color: var(--sp-primary);
}

.upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--sp-gray-500);
    margin-top: 0.5rem;
}

/* --- Buttons --- */
.btn-primary {
    background-color: var(--sp-primary);
    border-color: var(--sp-primary);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 0.375rem;
    font-size: 0.9rem;
}

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

.btn-outline-primary {
    color: var(--sp-primary);
    border-color: var(--sp-primary);
    font-weight: 500;
    font-size: 0.8rem;
    border-radius: 0.375rem;
}

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

/* --- File Table --- */
.file-table {
    margin-bottom: 0;
}

.file-table thead th {
    background: var(--sp-gray-50);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sp-gray-500);
    border-bottom: 2px solid var(--sp-gray-200);
    padding: 0.75rem 1rem;
}

.file-table tbody td {
    padding: 0.875rem 1rem;
    vertical-align: middle;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--sp-gray-100);
}

.file-table tbody tr:hover {
    background-color: var(--sp-gray-50);
}

.file-table .file-name {
    font-weight: 500;
    color: var(--sp-gray-900);
}

.file-table .file-name i {
    color: var(--sp-gray-500);
    margin-right: 0.5rem;
}

.file-table .file-meta {
    color: var(--sp-gray-500);
    font-size: 0.85rem;
}

/* --- Stats Row --- */
.stat-card {
    text-align: center;
    padding: 1.25rem 1rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--sp-gray-900);
}

.stat-card .stat-label {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--sp-gray-500);
    margin-top: 0.25rem;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state i {
    font-size: 3rem;
    color: var(--sp-gray-300);
    margin-bottom: 1rem;
}

.empty-state p {
    color: var(--sp-gray-500);
    font-size: 0.95rem;
}

/* --- Alerts --- */
.alert {
    border-radius: 0.5rem;
    font-size: 0.9rem;
    border: none;
}

.alert-success {
    background-color: #ecfdf5;
    color: var(--sp-success);
}

/* --- Container --- */
.main-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* --- Footer text --- */
.text-muted {
    color: var(--sp-gray-500) !important;
}