/* Modern Color Palette */
:root {
    --primary-color: #2c3e50;
    --primary-dark: #2c3e50;
    --primary-light: #dbeafe;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --info-color: #0891b2;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-accent: #f1f5f9;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --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);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

/* Typography */
.font-heading {
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.font-subheading {
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.font-text {
    font-weight: 400;
    color: var(--text-secondary);
}

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

/* Enhanced Navigation */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: #ffffff !important;
    text-decoration: none;
}

.navbar .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    margin: 0 0.25rem;
}

.navbar .nav-link:hover {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

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

/* Modern Cards */
.section-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    border: 1px solid var(--border-light);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
}

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

.section-card-centered {
    background: linear-gradient(135deg, var(--primary-light) 0%, #e0f2fe 100%);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    position: relative;
}

/* Enhanced Tables */
.table-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-primary);
    table-layout: fixed;
    width: 100%;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.table-main thead th {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    color: var(--text-primary);
    padding: 1rem 0.75rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table-main tbody tr {
    background: var(--bg-primary);
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border-light);
}

.table-main tbody tr:hover {
    background: var(--bg-accent);
    transform: scale(1.01);
    box-shadow: var(--shadow-sm);
}

.table-main td,
.table-main th {
    padding: 0.875rem 0.75rem;
    vertical-align: middle;
}

.table-main tr:last-child td {
    border-bottom: none;
}

.truncate-col {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 0;
}

/* Enhanced Buttons */
.btn {
    border-radius: var(--radius-md);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline-secondary:hover {
    background: var(--bg-accent);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

/* Enhanced Badges */
.badge {
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    letter-spacing: 0.025em;
}

.bg-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #475569 100%) !important;
}

.bg-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #047857 100%) !important;
}

.bg-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #b45309 100%) !important;
}

.bg-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #b91c1c 100%) !important;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    gap: 0.375rem;
}

.status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* Links */
.tapprs-hover {
    transition: all 0.2s ease;
    position: relative;
}

.tapprs-hover:hover {
    color: var(--primary-color) !important;
    transform: translateX(2px);
}

.tapprs-hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.2s ease;
}

.tapprs-hover:hover::after {
    width: 100%;
}

/* Form Controls */
.form-control,
.form-select {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: var(--bg-primary);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Icons */
.bi {
    font-size: 1rem;
}

/* Page Headers */
.page-header {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-accent) 100%);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Responsive Mobile Tables */
@media (max-width: 768px) {
    .container-fluid {
        padding: 1rem;
    }
    
    .section-card {
        padding: 1rem;
    }
    
    .table-main thead {
        display: none;
    }
    
    .table-main,
    .table-main tbody,
    .table-main tr,
    .table-main td {
        display: block;
        width: 100%;
    }
    
    .table-main tr {
        margin-bottom: 1.5rem;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 1rem;
        background: var(--bg-primary);
        box-shadow: var(--shadow-sm);
    }
    
    .table-main tr:hover {
        transform: none;
        box-shadow: var(--shadow-md);
    }
    
    .table-main td {
        text-align: right;
        position: relative;
        padding: 0.75rem 0 !important;
        border: none !important;
        min-height: 2.5rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .table-main td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-primary);
        text-transform: uppercase;
        font-size: 0.75rem;
        letter-spacing: 0.05em;
        flex: 1;
        text-align: left;
    }
    
    .table-main td > * {
        flex-shrink: 0;
    }
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Utility Classes */
.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow-md {
    box-shadow: var(--shadow-md) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

.rounded-modern {
    border-radius: var(--radius-lg) !important;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-light);
    padding: 1.5rem 0;
    margin-top: 2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.5s ease-out;
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-muted: #64748b;
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-accent: #334155;
        --border-color: #334155;
        --border-light: #475569;
    }
}