/* ============================================
   DSR Sales Management System - Custom Styles
   ============================================ */

/* ---------- CSS Variables / Design Tokens ---------- */
:root {
    /* Primary Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-bg: #eff6ff;
    
    /* Secondary Colors */
    --secondary-color: #64748b;
    --secondary-dark: #475569;
    --secondary-light: #94a3b8;
    
    /* Accent Colors */
    --success-color: #10b981;
    --success-bg: #ecfdf5;
    --warning-color: #f59e0b;
    --warning-bg: #fffbeb;
    --danger-color: #ef4444;
    --danger-bg: #fef2f2;
    --info-color: #06b6d4;
    --info-bg: #ecfeff;
    
    /* Neutral Colors */
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ---------- Base Styles ---------- */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ---------- Navbar Styles ---------- */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    box-shadow: var(--shadow-md);
    padding: 0.75rem 1rem;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand i {
    font-size: 1.5rem;
}

.navbar .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin: 0 0.15rem;
}

.navbar .nav-link:hover {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.15);
}

.navbar .nav-link.active {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.2);
}

/* ---------- Card Styles ---------- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}

.card-body {
    padding: 1.25rem;
}

/* ---------- Summary Cards ---------- */
.summary-card {
    border: none;
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.summary-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.summary-card .card-body {
    padding: 1.5rem;
}

.summary-card.primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.summary-card.success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    color: white;
}

.summary-card.warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    color: white;
}

.summary-card.danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
    color: white;
}

.summary-card.info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0891b2 100%);
    color: white;
}

.summary-card .card-title {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.summary-card .card-icon {
    font-size: 2.5rem;
    opacity: 0.3;
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
}

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

.table thead th {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.875rem 1rem;
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 10;
}

.table tbody tr {
    transition: all var(--transition-fast);
}

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

.table tbody td {
    padding: 0.875rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(248, 250, 252, 0.5);
}

.table-striped tbody tr:nth-of-type(odd):hover {
    background-color: var(--primary-bg);
}

/* ---------- Button Styles ---------- */
.btn {
    font-weight: 500;
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
    border: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #34d399 0%, var(--success-color) 100%);
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #fbbf24 0%, var(--warning-color) 100%);
    color: white;
    box-shadow: 0 4px 8px rgba(245, 158, 11, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #f87171 0%, var(--danger-color) 100%);
    box-shadow: 0 4px 8px rgba(239, 68, 68, 0.4);
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0891b2 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(6, 182, 212, 0.3);
}

.btn-info:hover {
    background: linear-gradient(135deg, #22d3ee 0%, var(--info-color) 100%);
    color: white;
    box-shadow: 0 4px 8px rgba(6, 182, 212, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

/* ---------- Badge Styles ---------- */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%) !important;
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #0891b2 100%) !important;
}

/* ---------- Form Styles ---------- */
.form-control, .form-select {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.625rem 0.875rem;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
}

.input-group-text {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* ---------- Modal Styles ---------- */
.modal-content {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 1.25rem 1.5rem;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.modal-header .btn-close:hover {
    opacity: 1;
}

.modal-title {
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    background: #f8fafc;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ---------- Alert Styles ---------- */
.alert {
    border: none;
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    border-left: 4px solid;
}

.alert-success {
    background-color: var(--success-bg);
    border-left-color: var(--success-color);
    color: #065f46;
}

.alert-warning {
    background-color: var(--warning-bg);
    border-left-color: var(--warning-color);
    color: #92400e;
}

.alert-danger {
    background-color: var(--danger-bg);
    border-left-color: var(--danger-color);
    color: #991b1b;
}

.alert-info {
    background-color: var(--info-bg);
    border-left-color: var(--info-color);
    color: #155e75;
}

/* ---------- Page Header ---------- */
.page-header {
    background: var(--card-bg);
    padding: 1.5rem 2rem;
    margin: -1rem -1rem 1.5rem -1rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.page-header h1, .page-header h2, .page-header h3 {
    margin: 0;
    font-weight: 700;
    color: var(--text-primary);
}

.page-header .breadcrumb {
    margin-bottom: 0;
    background: transparent;
    padding: 0;
}

/* ---------- Stats Row ---------- */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* ---------- Loading Spinner ---------- */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3rem;
}

/* ---------- Toast Notifications ---------- */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
}

.toast {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.toast-header {
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h5 {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* ---------- Status Indicators ---------- */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-dot.success { background-color: var(--success-color); }
.status-dot.warning { background-color: var(--warning-color); }
.status-dot.danger { background-color: var(--danger-color); }
.status-dot.info { background-color: var(--info-color); }

/* ---------- Progress Bar ---------- */
.progress {
    height: 0.5rem;
    border-radius: var(--radius-sm);
    background-color: #e2e8f0;
    overflow: hidden;
}

.progress-bar {
    border-radius: var(--radius-sm);
    transition: width var(--transition-slow);
}

/* ---------- Hover Effects ---------- */
.hover-lift {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ---------- Scrollbar Styles ---------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

.animate-fadeIn {
    animation: fadeIn var(--transition-normal) ease-out;
}

.animate-slideIn {
    animation: slideIn var(--transition-normal) ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ---------- Responsive Adjustments ---------- */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .page-header {
        padding: 1rem;
        margin: -0.5rem -0.5rem 1rem -0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table thead th,
    .table tbody td {
        padding: 0.625rem 0.5rem;
        font-size: 0.85rem;
    }
    
    .summary-card .card-value {
        font-size: 1.5rem;
    }
}

/* ---------- Print Styles ---------- */
@media print {
    .navbar, .btn, .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}