:root {
    --bg-main: #0f172a;
    --bg-alt: #1e293b;
    --card-bg: #1e293b;
    --card-border: #334155;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success-color: #22c55e;
    --max-width: 1200px;
    --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #0f172a;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #ffffff;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background-color: var(--card-bg);
    border-color: var(--accent-color);
}

/* Header & Nav */
.site-header {
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
    padding: 0.75rem 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.header-logo-img {
    height: 42px;
    width: auto;
    display: block;
    object-fit: contain;
}

.footer-logo-img {
    height: 38px;
    width: auto;
    display: block;
    object-fit: contain;
    margin-bottom: 0.5rem;
}

.site-nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.site-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-main);
}

/* Hero Section */
.hero-section {
    padding: 5rem 0 4rem;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(34, 197, 94, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(34, 197, 94, 0.3);
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success-color);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success-color);
}

.hero-content h1 {
    font-size: 2.75rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero-content h1 span {
    color: var(--accent-color);
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* Code Window Visual */
.code-window {
    background-color: #020617;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.window-header {
    background-color: var(--card-bg);
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--card-border);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.window-title {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: monospace;
}

.window-body {
    padding: 1.5rem;
}

.window-body pre {
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.code-keyword { color: #f43f5e; }
.code-comment { color: #64748b; }
.code-var { color: #38bdf8; }
.code-string { color: #a3e635; }
.code-func { color: #c084fc; }

/* Section Styling */
.section {
    padding: 5rem 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-muted);
}

/* Grids & Cards */
.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.check-list {
    list-style: none;
    margin-top: 1.5rem;
}

.check-list li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.notice-box {
    background-color: rgba(56, 189, 248, 0.05);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 10px;
    padding: 1.5rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 2rem;
    transition: transform 0.2s, border-color 0.2s;
}

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

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

.card h3 {
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.step-card {
    background-color: var(--bg-main);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 1.5rem;
    position: relative;
}

.step-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

/* Preview Section */
.preview-box {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.demo-card {
    background-color: var(--bg-main);
    border: 1px dashed var(--card-border);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
}

.lock-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.5rem;
}

.demo-badge {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.25rem 0.75rem;
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    font-size: 0.8rem;
    border-radius: 4px;
}

.text-block {
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-muted);
}

.text-block p {
    margin-bottom: 1rem;
}

.cta-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg-main) 100%);
    border-top: 1px solid var(--card-border);
}

.cta-section h2 {
    margin-bottom: 1rem;
}

.cta-section p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Footer */
.site-footer {
    background-color: #020617;
    border-top: 1px solid var(--card-border);
    padding-top: 3rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-tagline {
    color: var(--accent-color);
    font-weight: 600;
    margin: 0.5rem 0;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.875rem;
    max-width: 400px;
}

.footer-links h4 {
    margin-bottom: 1rem;
}

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

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--card-border);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Cookie Banner Styling */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #020617;
    border-top: 1px solid var(--card-border);
    padding: 1rem 0;
    z-index: 1000;
    box-shadow: 0 -10px 25px rgba(0,0,0,0.5);
}

.cookie-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
}

.cookie-container p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.cookie-container a {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 900px) {
    .hero-container, .about-grid, .preview-box {
        grid-template-columns: 1fr;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-main);
        border-bottom: 1px solid var(--card-border);
        padding: 1.5rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .site-nav.active {
        display: flex;
    }

    .site-nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-container {
        flex-direction: column;
    }

    .cookie-container {
        flex-direction: column;
        align-items: flex-start;
    }
}