/* ============================================
   TransForgeX1 - Enterprise HPC Platform UI
   Industrial Design | Client-Ready | Professional
   ============================================ */

/* CSS Variables - Enterprise Dark Theme */
:root {
    /* Primary Brand Colors - Trustworthy Blue */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* Secondary - Slate Gray (Enterprise Standard) */
    --secondary-50: #f8fafc;
    --secondary-100: #f1f5f9;
    --secondary-200: #e2e8f0;
    --secondary-300: #cbd5e1;
    --secondary-400: #94a3b8;
    --secondary-500: #64748b;
    --secondary-600: #475569;
    --secondary-700: #334155;
    --secondary-800: #1e293b;
    --secondary-900: #0f172a;
    
    /* Accent Colors - Industrial */
    --accent-blue: #0284c7;
    --accent-indigo: #4f46e5;
    --accent-teal: #0d9488;
    
    /* Semantic Colors */
    --success: #059669;
    --warning: #d97706;
    --error: #dc2626;
    --info: #0284c7;
    
    /* Gradients - Subtle & Professional */
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    --card-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
    --hover-gradient: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
    
    /* Spacing - Consistent Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Border Radius - Clean */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows - Subtle */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.2);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Glass Effect - Subtle */
    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(71, 85, 105, 0.3);
    --glass-blur: blur(8px);
}

/* Light Theme - Clean & Professional */
body.light-theme {
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --card-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.8) 100%);
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(203, 213, 225, 0.5);
    
    --secondary-900: #f8fafc;
    --secondary-800: #f1f5f9;
    --secondary-700: #e2e8f0;
    --secondary-600: #cbd5e1;
    --secondary-500: #94a3b8;
    --secondary-400: #64748b;
    --secondary-300: #475569;
    --secondary-200: #334155;
    --secondary-100: #1e293b;
    --secondary-50: #0f172a;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-gradient);
    color: var(--secondary-100);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

::-webkit-scrollbar-track {
    background: var(--secondary-800);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-600);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-500);
}

/* Navigation - Enterprise */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.875rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    flex-wrap: wrap;
    gap: 1rem;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-400);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-brand span {
    background: linear-gradient(135deg, var(--primary-400), var(--accent-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-links {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--secondary-400);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-400);
    background: var(--hover-gradient);
}

.nav-link.active {
    color: var(--primary-400);
    background: var(--hover-gradient);
    border-bottom: 2px solid var(--primary-500);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-6);
}

/* Cards - Enterprise */
.card {
    background: var(--card-gradient);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--glass-border);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--secondary-100);
}

/* Buttons - Professional */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
}

.btn-primary:hover {
    background: var(--primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--secondary-700);
    color: var(--secondary-100);
    border-color: var(--secondary-600);
}

.btn-secondary:hover {
    background: var(--secondary-600);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #047857;
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover {
    background: #b45309;
}

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-danger:hover {
    background: #b91c1c;
}

.btn-outline {
    background: transparent;
    border-color: var(--secondary-600);
    color: var(--secondary-300);
}

.btn-outline:hover {
    background: var(--secondary-800);
    border-color: var(--primary-500);
    color: var(--primary-400);
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

.btn-group {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* Form Elements */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--secondary-300);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--secondary-800);
    border: 1px solid var(--secondary-700);
    border-radius: var(--radius-md);
    color: var(--secondary-100);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: var(--shadow-focus);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.stat-card {
    background: var(--card-gradient);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    transition: all var(--transition-base);
}

.stat-card:hover {
    border-color: var(--primary-500);
    transform: translateY(-2px);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-400);
    line-height: 1.2;
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--secondary-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Progress Bar */
.progress {
    background: var(--secondary-800);
    border-radius: var(--radius-full);
    height: 6px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-500), var(--accent-blue));
    height: 100%;
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    letter-spacing: 0.01em;
}

.badge-success {
    background: rgba(5, 150, 105, 0.15);
    color: #10b981;
}

.badge-warning {
    background: rgba(217, 119, 6, 0.15);
    color: #f59e0b;
}

.badge-info {
    background: rgba(2, 132, 199, 0.15);
    color: #0ea5e9;
}

.badge-primary {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    background: var(--secondary-800);
    border: 1px solid var(--secondary-700);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    animation: slideInRight 0.3s ease;
}

.toast-success {
    border-left: 3px solid var(--success);
}

.toast-error {
    border-left: 3px solid var(--error);
}

.toast-info {
    border-left: 3px solid var(--info);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Node Cards - Network */
.nodes-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-3);
}

.node-card {
    background: var(--card-gradient);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.node-card:hover {
    border-color: var(--primary-500);
    transform: translateY(-2px);
}

.node-idle {
    border-left: 3px solid var(--success);
}

.node-busy {
    border-left: 3px solid var(--warning);
}

.node-name {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: var(--space-2);
}

.node-load {
    font-size: 0.7rem;
    color: var(--secondary-500);
}

/* Queue Items */
.queue-item {
    background: var(--secondary-800);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.queue-item:hover {
    background: var(--secondary-700);
    transform: translateX(4px);
}

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}

.feature-card {
    background: var(--card-gradient);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    transition: all var(--transition-base);
    cursor: pointer;
}

.feature-card:hover {
    border-color: var(--primary-500);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--space-3);
}

.feature-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--secondary-100);
}

.feature-desc {
    font-size: 0.875rem;
    color: var(--secondary-400);
    line-height: 1.5;
}

/* Results Window */
.results-window {
    background: var(--secondary-800);
    border-left: 3px solid var(--primary-500);
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.result-card {
    background: var(--secondary-700);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    transition: all var(--transition-fast);
}

.result-card:hover {
    background: var(--secondary-600);
    transform: translateX(-4px);
}

.result-card-title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
}

.result-card-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary-100);
}

.result-card-detail {
    font-size: 0.7rem;
    color: var(--secondary-500);
    margin-top: var(--space-1);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.data-table th {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--secondary-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tr:hover td {
    background: var(--hover-gradient);
}

/* Loading States */
.spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--secondary-700);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Footer */
.site-footer {
    margin-top: var(--space-12);
    padding-top: var(--space-6);
    border-top: 1px solid var(--glass-border);
    text-align: center;
    font-size: 0.75rem;
    color: var(--secondary-500);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--primary-400); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }

/* Responsive */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        text-align: center;
    }
    .nav-links {
        justify-content: center;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .container {
        padding: var(--space-4);
    }
    .btn-group {
        flex-direction: column;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .navbar, .btn, .results-window {
        display: none;
    }
    body {
        background: white;
        color: black;
    }
    .card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}