:root,
[data-theme="dark"] {
    --bg-color: #0b0f19;
    --card-bg: rgba(18, 24, 38, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(56, 189, 248, 0.4);
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.25);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --nav-bg: rgba(18, 24, 38, 0.5);
    --progress-track: rgba(255, 255, 255, 0.06);
    --btn-active-bg: rgba(30, 41, 59, 0.9);
    --shadow-card: 0 12px 28px -6px rgba(0, 0, 0, 0.4);
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
    --bg-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(203, 213, 225, 0.6);
    --card-hover-border: rgba(0, 108, 178, 0.45);
    --accent: #006eb6;
    --accent-glow: rgba(0, 108, 178, 0.18);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --nav-bg: rgba(255, 255, 255, 0.75);
    --progress-track: rgba(0, 0, 0, 0.06);
    --btn-active-bg: rgba(241, 245, 249, 0.95);
    --shadow-card: 0 10px 25px -4px rgba(0, 0, 0, 0.06), 0 4px 10px -2px rgba(0, 0, 0, 0.04);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-heading);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background Canvas */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}

/* Minimal Subtle Ambient Glow */
.ambient-glow {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(160px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.12;
    transition: opacity 0.3s ease;
}

[data-theme="light"] .ambient-glow {
    opacity: 0.06;
}

.glow-top-left {
    top: -150px;
    left: -150px;
    background: radial-gradient(circle, var(--accent), transparent 70%);
}

.glow-bottom-right {
    bottom: -150px;
    right: -150px;
    background: radial-gradient(circle, var(--accent), transparent 70%);
}

/* Main Wrapper */
.main-wrapper {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 2rem 1.5rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Navigation / Header */
.top-nav {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 100px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 20px -4px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.brand-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-main);
    font-size: 1rem;
}

.brand-badge .indicator-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: pulse 2.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.35; transform: scale(0.85); }
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.server-status-pill {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 0.3rem 0.8rem;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid var(--card-border);
    color: var(--accent);
    border-radius: 50px;
}

[data-theme="light"] .server-status-pill {
    background: rgba(0, 108, 178, 0.08);
    border-color: rgba(0, 108, 178, 0.2);
}

.server-status-pill i {
    width: 14px;
    height: 14px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--card-border);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.25s ease;
}

[data-theme="light"] .theme-toggle-btn {
    background: rgba(0, 0, 0, 0.04);
}

.theme-toggle-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(15deg) scale(1.05);
}

.theme-toggle-btn i {
    width: 18px;
    height: 18px;
}

[data-theme="dark"] .theme-icon-light {
    display: block;
}
[data-theme="dark"] .theme-icon-dark {
    display: none;
}
[data-theme="light"] .theme-icon-light {
    display: none;
}
[data-theme="light"] .theme-icon-dark {
    display: block;
}

/* Hero Section */
.hero-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: auto;
    text-align: center;
    position: relative;
    margin-bottom: 1.25rem;
}

.hero-logo-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 0.75rem;
}

.hero-logo {
    max-height: 42px;
    max-width: 280px;
    width: auto;
    object-fit: contain;
    opacity: 0.95;
    transition: transform 0.3s ease, opacity 0.3s ease;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

[data-theme="light"] .hero-logo {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.08));
}

.hero-logo:hover {
    transform: scale(1.03);
    opacity: 1;
}

/* Particle Container */
.particle-canvas-container {
    width: 100%;
    height: 170px;
    max-width: 1100px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

#particle-canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
}

.hero-subtitle {
    margin-top: 0.5rem;
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.hero-subtitle span {
    color: var(--text-main);
    font-weight: 600;
}

/* Controls / 4 Action Buttons */
.controls-bar {
    width: 100%;
    max-width: 1050px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 0.95rem 1.2rem;
    border-radius: 14px;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    box-shadow: var(--shadow-card);
}

.action-btn i {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: color 0.25s ease, transform 0.25s ease;
}

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

.action-btn:hover i,
.action-btn.active i {
    color: var(--accent);
    transform: scale(1.1);
}

.action-btn.active {
    background: var(--btn-active-bg);
    border-color: var(--accent);
    box-shadow: 0 0 20px -4px var(--accent-glow);
}

/* Dashboard Cards Grid */
.dashboard-grid {
    width: 100%;
    max-width: 1050px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.metric-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 16px;
    padding: 1.6rem;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: var(--shadow-card);
}

.metric-card:hover {
    border-color: var(--card-hover-border);
    transform: translateY(-3px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.card-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.06em;
}

.card-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--card-border);
}

[data-theme="light"] .card-icon {
    background: rgba(0, 0, 0, 0.03);
}

.card-icon i {
    width: 18px;
    height: 18px;
    color: var(--accent);
}

.card-value {
    font-size: clamp(1.35rem, 1.8vw, 1.85rem);
    font-weight: 700;
    color: var(--text-main);
    font-family: var(--font-heading);
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-bottom: 1.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Progress bar */
.progress-track {
    width: 100%;
    height: 6px;
    background: var(--progress-track);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    border-radius: 10px;
    transition: width 0.6s ease, background 0.3s ease;
    background: var(--accent);
}

.card-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    border-top: 1px solid var(--card-border);
    padding-top: 0.8rem;
    margin-top: auto;
}

.card-details strong {
    color: var(--text-main);
}

/* Live Specs Bar */
.system-specs-box {
    width: 100%;
    max-width: 1050px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
    border-radius: 14px;
    padding: 1.1rem 1.6rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.spec-item span {
    color: var(--text-main);
}

/* Footer */
.page-footer {
    margin-top: 3rem;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.page-footer a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.2s;
}

.page-footer a:hover {
    opacity: 0.8;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .controls-bar {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .controls-bar {
        grid-template-columns: 1fr;
    }
    .particle-canvas-container {
        height: 110px;
    }
    .system-specs-box {
        flex-direction: column;
        align-items: flex-start;
    }
}