/* Synapsis Marketing Site - Matching App Aesthetic */

:root {
    /* Base Colors - Matching Synapsis App */
    --background: #0a0a0a;
    --background-secondary: #111111;
    --background-tertiary: #171717;

    /* Border Colors */
    --border: #262626;
    --border-hover: #404040;

    /* Text Colors */
    --foreground: #ededed;
    --foreground-secondary: #a1a1a1;
    --foreground-tertiary: #666666;

    /* Accent */
    --accent: #ffffff;
    --accent-hover: #f4f4f4;
    --accent-muted: rgba(255, 255, 255, 0.1);

    /* Status Colors */
    --error: #ef4444;
    --success: #22c55e;
    --warning: #f59e0b;

    /* Spacing */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

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

html {
    color-scheme: dark;
    scroll-behavior: smooth;
}

body {
    background-color: var(--background);
    color: var(--foreground);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Links */
a {
    color: var(--foreground);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--background-secondary);
    color: var(--foreground);
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
}

.btn:hover {
    background: var(--background-tertiary);
    border-color: var(--border-hover);
    color: var(--foreground);
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #000;
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #000;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 18px;
    color: var(--foreground);
}

.nav-logo:hover {
    color: var(--foreground);
}

.nav-logo span {
    font-family: 'Saira Condensed', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo-icon {
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    color: var(--foreground-secondary);
}

.nav-links a:hover {
    color: var(--foreground);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 40px;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    margin-bottom: 24px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--foreground-secondary);
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    color: var(--accent);
}

.hero-subtitle {
    max-width: 600px;
    margin: 0 auto 40px;
    font-size: 18px;
    color: var(--foreground-secondary);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--foreground-tertiary);
}

/* Sections */
.section {
    padding: 120px 24px;
}

#features.section {
    padding-top: 20px;
}

.section-alt {
    background: var(--background-secondary);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 18px;
    color: var(--foreground-secondary);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--foreground);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--foreground-secondary);
    line-height: 1.6;
}

/* Concept Grid */
.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.concept-card {
    padding: 32px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.concept-number {
    font-size: 12px;
    font-weight: 600;
    color: var(--foreground-tertiary);
    margin-bottom: 16px;
}

.concept-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.concept-card p {
    font-size: 14px;
    color: var(--foreground-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.concept-detail {
    font-size: 13px;
    color: var(--foreground-tertiary);
}

.concept-detail code {
    background: var(--background-tertiary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 12px;
}

.code-block {
    background: var(--background-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    overflow-x: auto;
}

.code-block code,
.code-block pre {
    font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    font-size: 13px;
    color: var(--foreground-secondary);
    white-space: pre;
    margin: 0;
}

/* Federation Diagram */
.federation-diagram {
    position: relative;
    height: 100px;
    margin: 24px 0;
}

.node {
    position: absolute;
    padding: 8px 16px;
    background: var(--background-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 500;
}

.node-1 {
    left: 10%;
    top: 10%;
}

.node-2 {
    left: 40%;
    top: 60%;
}

.node-3 {
    right: 10%;
    top: 10%;
}

.federation-lines {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.tech-logo {
    color: var(--foreground);
}

.tech-item span {
    font-size: 14px;
    font-weight: 500;
    color: var(--foreground-secondary);
}

/* Install Steps */
.install-steps {
    display: grid;
    gap: 24px;
    margin-bottom: 48px;
}

.install-step {
    padding: 32px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.step-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
}

.step-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.step-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.step-list li {
    font-size: 14px;
    color: var(--foreground-secondary);
    padding-left: 20px;
    position: relative;
}

.step-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--foreground-tertiary);
}

.install-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(180deg, var(--background) 0%, var(--background-secondary) 100%);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 18px;
    color: var(--foreground-secondary);
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    padding: 80px 24px 40px;
    background: var(--background-secondary);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--foreground-secondary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--foreground-tertiary);
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    font-size: 14px;
    color: var(--foreground-secondary);
    margin-bottom: 12px;
}

.footer-column a:hover {
    color: var(--foreground);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--foreground-tertiary);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-container .btn {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .section {
        padding: 80px 16px;
    }

    .section-header h2 {
        font-size: 32px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

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