/* FuelFlow Queue Lab - Custom Theme (Dark Navy + Amber Glassmorphism) */

:root {
    --navy-900: #0a1628;
    --navy-800: #111d35;
    --navy-700: #1a2744;
    --navy-100: #eef2f9;
    --amber-500: #f59e0b;
    --amber-400: #fbbf24;
    --amber-600: #d97706;
    --amber-100: #fef3c7;
    --surface: #ffffff;
    --surface-glass: rgba(255, 255, 255, 0.95);
    --text-primary: #1e293b;
    --text-muted: #64748b;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-hover: 0 10px 30px rgba(0,0,0,0.12);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: #f8fafc;
}

h1, h2, h3, h4, h5, h6, .navbar-brand {
    font-family: 'Poppins', sans-serif;
}

/* Header & Navbar */
.app-header {
    background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.text-amber {
    color: var(--amber-500) !important;
}
.bg-amber {
    background-color: var(--amber-500) !important;
}
.bg-navy {
    background-color: var(--navy-900) !important;
}
.bg-navy-100 {
    background-color: var(--navy-100) !important;
}
.text-navy-800 {
    color: var(--navy-800) !important;
}

.nav-item-hover {
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
}
.nav-item-hover:hover {
    color: var(--amber-400) !important;
    border-bottom: 2px solid var(--amber-400);
}

/* Sidebar */
.sidebar {
    width: 280px;
    height: 100%;
    z-index: 100;
    box-shadow: 2px 0 10px rgba(0,0,0,0.03);
}

.sidebar-nav .nav-link {
    color: var(--text-primary);
    border-radius: 8px;
    margin: 0 12px;
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link:hover {
    background-color: rgba(0,0,0,0.03);
    transform: translateX(3px);
}

.sidebar-nav .nav-link.active {
    background-color: var(--amber-100);
    color: var(--amber-600);
    border-left: 4px solid var(--amber-500);
}

.icon-box {
    width: 32px;
    height: 32px;
    font-size: 1.1rem;
}

.tracking-wider {
    letter-spacing: 0.05em;
}

.fs-7 {
    font-size: 0.85rem;
}

/* Main Layout */
.main-wrapper {
    min-height: calc(100vh - 72px - 60px); /* header - footer */
}

.max-w-1200 {
    max-width: 1200px;
}

/* Cards & Glassmorphism */
.glass-card {
    background: var(--surface-glass);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.top-accent {
    border-top: 4px solid var(--amber-500);
}

.top-accent-navy {
    border-top: 4px solid var(--navy-800);
}

/* Model Selector Pills */
.model-pill {
    cursor: pointer;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    transition: all 0.2s;
    background: white;
}

.model-pill:hover {
    border-color: var(--amber-400);
    background-color: var(--amber-100);
}

.model-pill.active {
    background-color: var(--amber-500);
    color: white;
    border-color: var(--amber-600);
    font-weight: 600;
}

/* Distribution Cards */
.dist-card {
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.dist-card:hover {
    border-color: #cbd5e1;
    transform: translateY(-2px);
}

.dist-card.selected {
    border-color: var(--amber-500);
    background-color: #fdfaf3; /* very light amber */
}

/* Live Preview Panel */
.live-preview-box {
    background: linear-gradient(120deg, #f8fafc, #f1f5f9);
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.metric-value {
    font-family: monospace;
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--navy-800);
}

.metric-warning {
    color: #dc3545 !important;
}

/* Tables */
.table-custom {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.table-custom thead {
    background-color: var(--navy-800);
    color: white;
}

.table-custom th {
    font-weight: 500;
    border: none;
}

/* Buttons */
.btn-primary {
    background-color: var(--amber-500);
    border-color: var(--amber-500);
    color: white;
    font-weight: 500;
}
.btn-primary:hover {
    background-color: var(--amber-600);
    border-color: var(--amber-600);
}

/* Animations */
.fade-in-up {
    animation: fadeInUp 0.5s ease-out forwards;
}

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