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

:root {
    /* Commander AI brand colors */
    --brand-navy: #1a1a3e;
    --brand-navy-dark: #12122e;
    --brand-navy-light: #252554;

    /* macOS-inspired color palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #e8e8ed;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #86868b;
    --accent-blue: var(--brand-navy);
    --accent-blue-hover: var(--brand-navy-dark);
    --border-light: #d2d2d7;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.16);
    --border-radius: 12px;
    --window-bg: #fafafa;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.125rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:not(.btn-primary):hover {
    color: var(--accent-blue);
}

.nav-links .btn-primary {
    color: white;
}

/* Buttons */
.btn-primary {
    background: var(--accent-blue);
    color: white;
    padding: 0.625rem 1.5rem;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    display: inline-block;
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-blue);
    padding: 0.625rem 1.5rem;
    border-radius: 980px;
    text-decoration: none;
    font-weight: 500;
    border: 2px solid var(--accent-blue);
    transition: all 0.2s ease;
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-1px);
}

.btn-large {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

/* Hero Section */
.hero {
    padding: 6rem 0 8rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--brand-navy) 0%, var(--brand-navy-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.beta-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 980px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.hero-subtitle {
    font-size: 1.375rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.5;
}

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

/* Screenshot */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.screenshot {
    width: 100%;
    max-width: 650px;
    height: auto;
    aspect-ratio: 2272 / 1830;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    transition: transform 0.3s ease;
}

.screenshot:hover {
    transform: scale(1.02);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--bg-primary);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

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

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Workflow Section */
.workflow {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.workflow-step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--accent-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--brand-navy) 0%, var(--brand-navy-light) 100%);
    color: white;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 0 2rem;
}

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

.cta-subtitle {
    font-size: 1.375rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cta-buttons .btn-primary {
    background: white;
    color: var(--brand-navy);
}

.cta-buttons .btn-primary:hover {
    background: var(--bg-secondary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.cta-note {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-tertiary);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .window-mockup {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    .hero {
        padding: 3rem 0 4rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 2rem;
    }

    .window-body {
        height: 300px;
    }

    .sidebar {
        width: 180px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta a {
        width: 100%;
        text-align: center;
    }

    .nav-links a:not(.btn-primary) {
        display: none;
    }
}