/* ==========================================================================
   Web & PC Studio - Testdrive System Design System
   Look & Feel: Sleek Developer / Sysadmin Dark Theme (Geen commerciële elementen)
   ========================================================================== */

:root {
    --bg-base: #080c14;
    --bg-surface: rgba(15, 23, 42, 0.72);
    --bg-surface-elevated: rgba(23, 33, 56, 0.75);
    --bg-subtle: rgba(255, 255, 255, 0.03);
    
    --border-subtle: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.18);
    --border-accent: rgba(14, 165, 233, 0.35);

    --primary: #0ea5e9;
    --primary-hover: #0284c7;
    --primary-glow: rgba(14, 165, 233, 0.3);
    
    --accent: #8b5cf6;
    --accent-glow: rgba(139, 92, 246, 0.25);
    
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.25);
    --warning: #f59e0b;
    --danger: #ef4444;

    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 22px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-main);
    min-height: 100vh;
    padding: 24px 16px 60px;
    overflow-x: hidden;
    line-height: 1.5;
    background-image: 
        radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.12) 0px, transparent 45%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.1) 0px, transparent 45%),
        radial-gradient(at 50% 50%, rgba(16, 185, 129, 0.05) 0px, transparent 60%);
    background-attachment: fixed;
}

/* Subtiele particle canvas */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
}

.main-wrapper {
    max-width: 1080px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ==========================================================================
   Universele Navigatiebalk
   ========================================================================== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(13, 20, 36, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 10px 20px;
    margin-bottom: 28px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
}

.nav-logo {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.nav-title-group {
    display: flex;
    flex-direction: column;
}

.nav-title {
    font-size: 1.02rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #ffffff;
}

.nav-tagline {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(0, 0, 0, 0.3);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.nav-item {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.86rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-item:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.nav-item.active {
    background: rgba(14, 165, 233, 0.22);
    color: #ffffff;
    border: 1px solid rgba(14, 165, 233, 0.4);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
    padding: 5px 12px;
    border-radius: 9999px;
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.pulse-dot {
    width: 7px;
    height: 7px;
    background-color: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

@media (max-width: 820px) {
    .navbar { flex-direction: column; gap: 14px; }
    .nav-menu { width: 100%; justify-content: center; flex-wrap: wrap; }
}

/* ==========================================================================
   Hero & Headers
   ========================================================================== */
.hero {
    text-align: center;
    margin-bottom: 30px;
}

.hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(to right, #38bdf8, #818cf8, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.hero p {
    color: var(--text-muted);
    font-size: 0.98rem;
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.5;
}

/* ==========================================================================
   Cards & Layout Panels
   ========================================================================== */
.card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.45);
    transition: all 0.2s ease;
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-desc {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.45;
    margin-bottom: 16px;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Metrics & Datatables
   ========================================================================== */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.metric-box {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    padding: 10px 14px;
}

.metric-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 2px;
}

.metric-val {
    font-family: var(--font-mono);
    font-size: 1.08rem;
    font-weight: 700;
    color: #38bdf8;
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.data-table td {
    padding: 10px 0;
}

.data-table .label {
    color: var(--text-muted);
}

.data-table .val {
    text-align: right;
    font-family: var(--font-mono);
    color: var(--text-main);
    font-weight: 500;
}

/* Badges */
.badge-pill {
    background: rgba(14, 165, 233, 0.12);
    color: var(--primary);
    border: 1px solid rgba(14, 165, 233, 0.3);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-pill.success {
    background: rgba(16, 185, 129, 0.12);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.3);
}

.badge-pill.warning {
    background: rgba(245, 158, 11, 0.12);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, 0.3);
}

/* ==========================================================================
   Knoppen & Interacties
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--primary-glow);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ==========================================================================
   Terminal / Result Boxes
   ========================================================================== */
.terminal-box {
    background: #050810;
    border: 1px solid rgba(14, 165, 233, 0.25);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: #38bdf8;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 320px;
    overflow-y: auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-subtle);
    margin-top: 36px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer a {
    color: #38bdf8;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}