/* Modern Enterprise Theme for APS Platform */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* refined palette */
    --primary-color: #2563eb; /* Royal Blue */
    --primary-dark: #1e40af;
    --primary-light: #eff6ff;
    
    --secondary-color: #475569; /* Slate */
    --success-color: #10b981; /* Emerald */
    --warning-color: #f59e0b; /* Amber */
    --danger-color: #ef4444; /* Red */
    
    --dark-color: #0f172a; /* Slate 900 */
    --light-color: #f8fafc; /* Slate 50 */
    
    --surface-color: #ffffff;
    --surface-hover: #f1f5f9;
    
    --border-color: #e2e8f0;
    
    /* 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);
    
    /* glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-blur: 12px;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: #f3f4f6;
    background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--dark-color);
    -webkit-font-smoothing: antialiased;
}

/* Typography Polish */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--dark-color);
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Card Modernization */
.card, .main-container, .data-table {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    border-radius: 12px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* Glassmorphism for Main Container */
.main-container {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
}

/* Button Upgrades */
.btn {
    font-weight: 500;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    transition: all 0.2s;
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.3);
}

/* Table Polish */
.table {
    --bs-table-bg: transparent;
}

.table thead th {
    background-color: var(--light-color);
    color: var(--secondary-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    color: var(--dark-color);
    font-size: 0.9rem;
}

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

/* Sidebar Polish */
.nav-sidebar {
    background: #ffffff;
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.nav-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
}

.nav-node-content:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: 6px;
}

.nav-node.active > .nav-node-content {
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-weight: 600;
    border-radius: 6px;
}

/* Status Indicators */
.status-indicator {
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

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

.content-area > * {
    animation: fadeIn 0.4s ease-out forwards;
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

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

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

/* Dashboard Hero */
.dashboard-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.dashboard-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" stroke="white" stroke-width="2" fill="none" opacity="0.1"/></svg>') repeat;
    opacity: 0.1;
}

.dashboard-hero h2 {
    color: white;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.dashboard-hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

.dashboard-hero .badge {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-bottom: 1rem;
}

.quick-action-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s;
    backdrop-filter: blur(4px);
}

.quick-action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}