/* Variables */
:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #4fc3f7;
    --accent-hover: #29b6f6;
    --text-color: #e0e0e0;
    --text-muted: #90a4ae;
    --border-color: #2d3b48;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --font-family: 'Segoe UI', system-ui, sans-serif;
    --font-family-mono: 'JetBrains Mono', monospace;
    --spacing-unit: 1rem;
    --border-radius: 8px;
    --container-max-width: 1200px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
}

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--primary-color);
    min-height: 100vh;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-unit);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-unit);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
}

/* Code */
code {
    font-family: var(--font-family-mono);
    background: var(--secondary-color);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
}

pre {
    background: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-unit);
    overflow-x: auto;
    margin-bottom: var(--spacing-unit);
}

pre code {
    background: none;
    padding: 0;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

/* Header */
.logo-img {
    width: auto;
    height: 60px;
    max-width: 100%;
    display: block;
}

.site-header {
    background: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-unit);
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-img {
    width: 60px;
    height: 60px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    color: var(--text-color);
    padding: 0.5rem 0;
    position: relative;
}

.main-nav a.active {
    color: var(--accent-color);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-color);
}

/* Hero Section */
.hero {
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 6rem 0;
    text-align: center;
    color: white;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-secondary:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--text-color);
    border-color: var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: calc(var(--spacing-unit) * 1.5);
    margin: calc(var(--spacing-unit) * 2) 0;
}

.card {
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 1.5);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.card.success {
    border-left: 4px solid var(--success-color);
}

.card.warning {
    border-left: 4px solid var(--warning-color);
}

/* Experiment Page */
.experiment-page .breadcrumb {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.experiment-page .breadcrumb a {
    color: var(--accent-color);
}

.experiment-header {
    margin-bottom: 3rem;
    text-align: center;
}

.experiment-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.experiment-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--secondary-color);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.experiment-description {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.experiment-content {
    max-width: 800px;
    margin: 0 auto;
}

.experiment-content h2 {
    margin-top: 3rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.experiment-content h3 {
    margin-top: 2rem;
    color: var(--accent-color);
}

.experiment-footer {
    margin-top: 3rem;
    text-align: center;
}

/* Prompt Results */
.prompt-result {
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 1.5);
    border-left: 4px solid var(--accent-color);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.prompt-result:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.prompt-result img {
    margin-top: var(--spacing-unit);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.prompt-result img:hover {
    transform: scale(1.02);
}

/* Hardware Items */
.hardware-item {
    text-align: center;
}

.hardware-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.hardware-description {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.hardware-details {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Footer */
.site-footer {
    background: var(--secondary-color);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .main-nav ul {
        gap: 1rem;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .experiment-meta {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}
/* Lab Page */
.experiments-list h2 {
    margin-top: 2rem;
    color: var(--accent-color);
    text-align: center;
}

.lab-info ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.lab-info li {
    margin-bottom: 0.5rem;
}

.lab-about .card {
    background: var(--secondary-color);
    border-left: 4px solid var(--accent-color);
}

.lab-about h2 {
    text-align: center;
    color: var(--accent-color);
    margin-bottom: 1rem;
}
#comments { margin-top: 40px; }
#comments form { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
#comments input, #comments textarea { width: 100%; padding: 8px; }
.comment { border-bottom: 1px solid #ccc; padding: 10px 0; }