:root {
    --bg-main: #0b0f19;
    --bg-surface: #111827;
    --bg-card: #1f2937;
    --border-color: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-blue: #3b82f6;
    --accent-indigo: #6366f1;
    --accent-rose: #ef4444;
    --status-healthy: #10b981;
    --status-warning: #f59e0b;
    --status-critical: #ef4444;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: all 0.2s ease-in-out;
}

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

a {
    text-decoration: none;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Navbar */
.header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.brand {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0 3rem;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--accent-blue);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 2.5rem;
}

.scan-box {
    max-width: 640px;
    margin: 0 auto 2rem;
}

.scan-form {
    display: flex;
    gap: 0.75rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.scan-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

/* Instant Scan Results Container & Premium UI Cards */
.scan-results {
    display: none;
    margin-top: 1.5rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: left !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    animation: scanResultsFadeIn 0.3s ease-out;
}

@keyframes scanResultsFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.scan-score-header {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    text-align: left !important;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
}

.score-badge-lg {
    font-size: 1.85rem;
    font-weight: 800;
    font-family: var(--font-mono);
    padding: 0.35rem 1rem;
    border-radius: var(--radius-md);
    display: inline-flex !important;
    align-items: baseline !important;
    gap: 0.15rem;
    flex-shrink: 0;
}

.metrics-grid {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 0.75rem !important;
    margin-bottom: 1.5rem;
}

@media (max-width: 640px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

.metric-item {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 0.85rem 0.5rem;
    border-radius: var(--radius-md);
    text-align: center !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    transition: var(--transition);
}

.metric-item:hover {
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

.metric-name {
    font-size: 0.725rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 0.35rem;
    letter-spacing: 0.03em;
}

.metric-val {
    font-size: 1.4rem;
    font-weight: 800;
    font-family: var(--font-mono);
    line-height: 1.1;
}

.issues-list {
    display: flex !important;
    flex-direction: column !important;
    gap: 0.65rem !important;
}

.issue-item {
    padding: 0.85rem 1rem;
    background: var(--bg-main);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    border-left-width: 4px !important;
    font-size: 0.875rem;
    text-align: left !important;
    transition: var(--transition);
}

.issue-item:hover {
    background: var(--bg-card);
}

.issue-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.9rem;
    text-align: left !important;
}

.issue-badge {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
}

.issue-desc {
    color: var(--text-secondary);
    font-size: 0.835rem;
    line-height: 1.45;
    margin-top: 0.2rem;
    text-align: left !important;
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #2563eb;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--border-color);
}

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

/* Section Header & Feature Cards */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1rem;
}

.features {
    padding: 4rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: var(--transition);
}

.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Pricing Grid */
.pricing {
    padding: 4rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.price-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
    display: flex;
    flex-direction: column;
}

.price-card.popular {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

.popular-tag {
    position: absolute;
    top: -12px;
    right: 1.5rem;
    background-color: var(--accent-blue);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
}

.price-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.price-amount {
    font-size: 2.25rem;
    font-weight: 800;
    margin: 1rem 0;
}

.price-period {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.price-features {
    list-style: none;
    margin: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex-grow: 1;
}

.price-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.price-features svg {
    color: var(--status-healthy);
    flex-shrink: 0;
}