:root {
    --bg-color: #0f172a;
    --panel-bg: #1e293b;
    --panel-border: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-center { text-align: center; }
.text-danger { color: var(--danger) !important; }

/* Hero Section */
.hero {
    padding: 100px 0 60px;
    border-bottom: 1px solid var(--panel-border);
    background: radial-gradient(circle at 50% -20%, #1e293b 0%, var(--bg-color) 70%);
}

.hero-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.hero-icon {
    width: 64px;
    height: 64px;
    color: var(--accent);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.hero .subtitle {
    font-size: 20px;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 16px;
}

.hero .description {
    font-size: 16px;
    color: var(--text-secondary);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.section-icon {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

.section h2 {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 32px;
    transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.2);
}

.card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.card h3 svg {
    color: var(--accent);
}

.card p {
    color: var(--text-secondary);
    font-size: 15px;
}

.card code {
    background: rgba(0,0,0,0.3);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 14px;
}

/* Danger Zone (Vulnerabilities) */
.danger-zone {
    border-top: 1px solid var(--panel-border);
}

.intro-text {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.vuln-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.vuln-item {
    display: flex;
    gap: 24px;
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 16px;
    padding: 32px;
}

.vuln-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(239, 68, 68, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--danger);
}

.vuln-content h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #fff;
}

.vuln-content p {
    color: var(--text-secondary);
    font-size: 15px;
}

.vuln-content strong {
    color: var(--text-primary);
}

.vuln-content code {
    color: var(--danger);
    background: rgba(0,0,0,0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

/* Footer */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--panel-border);
    color: var(--text-secondary);
    font-size: 14px;
}

/* Buttons */
.hero-buttons {
    margin-top: 32px;
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 9999px;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.2s, transform 0.2s;
    font-size: 15px;
    cursor: pointer;
}

.btn-github {
    background-color: #24292f;
    color: #fff;
    border: 1px solid var(--panel-border);
}

.btn-github:hover {
    background-color: #1a1e22;
    transform: translateY(-2px);
}