:root {
    --primary-dark: #1a0d2e;
    --secondary-dark: #16213e;
    --accent-purple: #8b5cf6;
    --accent-light: #a78bfa;
    --text-light: #e5e7eb;
    --text-muted: #9ca3af;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
}

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

body {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    color: var(--text-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

.main-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background: rgba(26, 13, 46, 0.95);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(139, 92, 246, 0.3);
    padding: 20px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar h2 {
    color: var(--accent-purple);
    margin-bottom: 30px;
    text-align: center;
    font-weight: 700;
}

.version-card {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.version-card:hover {
    background: rgba(139, 92, 246, 0.2);
    border-color: var(--accent-purple);
    transform: translateY(-2px);
}

.version-card.active {
    background: rgba(139, 92, 246, 0.3);
    border-color: var(--accent-light);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
}

.version-title {
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 5px;
}

.version-info {
    font-size: 0.9em;
    color: var(--text-muted);
}

.flash-btn {
    background: linear-gradient(45deg, var(--accent-purple), var(--accent-light));
    border: none;
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
    margin-top: 20px;
    width: 100%;
}

.flash-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.6);
}

.flash-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Main Content */
.content {
    flex: 1;
    margin-left: 320px;
    padding: 20px;
}

/* Warning Alert */
.warning-alert {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 30px;
    position: relative;
}

.warning-alert .fa-exclamation-triangle {
    color: var(--warning);
    font-size: 1.2em;
    margin-right: 10px;
}

/* Tabs */
.nav-tabs {
    border-bottom: 2px solid rgba(139, 92, 246, 0.3);
    margin-bottom: 30px;
}

.nav-tabs .nav-link {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 500;
    padding: 15px 25px;
    transition: all 0.3s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--accent-light);
    border-color: transparent;
}

.nav-tabs .nav-link.active {
    color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-bottom: 2px solid var(--accent-purple);
}

.tab-content {
    background: rgba(22, 33, 62, 0.5);
    border-radius: 12px;
    padding: 30px;
    backdrop-filter: blur(5px);
}

.accordion-body {
    color: white;
}

/* Feature Cards */
.feature-card {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

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

.feature-icon {
    color: var(--accent-purple);
    font-size: 2em;
    margin-bottom: 15px;
}

/* Wiring Diagram */
.wiring-table {
    background: rgba(26, 13, 46, 0.5);
    border-radius: 12px;
    overflow: hidden;
}

.wiring-table th {
    background: var(--accent-purple);
    color: white;
    text-align: center;
    padding: 15px;
}

.wiring-table td {
    padding: 12px 15px;
    border-bottom: 1px solid rgba(139, 92, 246, 0.2);
    text-align: center;
}

/* Changelog */
.changelog-item {
    border-left: 3px solid var(--accent-purple);
    padding-left: 20px;
    margin-bottom: 25px;
}

.changelog-version {
    color: var(--accent-light);
    font-weight: 600;
    font-size: 1.1em;
}

.changelog-date {
    color: var(--text-muted);
    font-size: 0.9em;
}

/* Footer */
.footer {
    background: rgba(26, 13, 46, 0.9);
    border-top: 1px solid rgba(139, 92, 246, 0.3);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
}

.social-links a {
    color: var(--accent-purple);
    font-size: 1.5em;
    margin: 0 15px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-light);
    transform: scale(1.2);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
    }

    .content {
        margin-left: 0;
    }

    .main-container {
        flex-direction: column;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--primary-dark);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-light);
}

.chronos img {
    max-width: 250px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.masonry {
    column-count: 4;
    column-gap: 1em;
}

.masonry-item {
    break-inside: avoid;
    margin-bottom: 1em;
    background: #f8f9fa;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.masonry-item img {
    width: 100%;
    display: block;
}