/* Apple-style Design - Clean & Minimal */
:root {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --border: #d2d2d7;
    --shadow: rgba(0, 0, 0, 0.08);
}

body {
    background: var(--bg-primary);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
    color: var(--text-primary);
}

.navbar {
    background: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 3px var(--shadow);
}

.navbar-brand {
    font-weight: 600;
    color: var(--text-primary) !important;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent) !important;
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 2px 8px var(--shadow);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px var(--shadow);
}

.card-header {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border);
    border-radius: 16px 16px 0 0 !important;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: var(--text-primary) !important;
}

.card-body {
    padding: 1.5rem;
}

.btn {
    border-radius: 980px;
    padding: 0.65rem 1.5rem;
    font-weight: 500;
    border: none;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: scale(1.02);
}

.btn-secondary {
    background: var(--text-secondary);
}

.btn-outline-primary {
    border: 1px solid var(--accent);
    color: var(--accent);
    background: transparent;
}

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

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1.05rem;
}

.form-control, .form-select {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
    background: var(--bg-secondary);
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.table {
    background: var(--bg-secondary);
    border-radius: 12px;
}

.table th {
    font-weight: 600;
    padding: 1rem;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.table td {
    padding: 1rem;
    color: var(--text-primary);
}

.table tbody tr {
    border-bottom: 1px solid var(--border);
}

.table tbody tr:hover {
    background: var(--bg-primary);
}

.alert {
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
}

.alert-info {
    background: #f0f8ff;
    border: 1px solid #b3d9ff;
    color: #004085;
}

.alert-success {
    background: #f0fff4;
    border: 1px solid #9ae6b4;
    color: #22543d;
}

.badge {
    border-radius: 6px;
    padding: 0.35rem 0.65rem;
    font-weight: 500;
}

.text-muted {
    color: var(--text-secondary) !important;
}