/* Brand Style Guide Variables */
:root {
    /* Brand Colors */
    --primary: #58da7d;
    --primary-dark: #4dc970;
    --dark-slate: #0a1929;
    --white: #ffffff;
    --sky-blue: #4fc3f7;
    --soft-purple: #9575cd;
    --soft-gray: #64748b;

    /* Background Colors */
    --bg-light: #f8fafc;
    --bg-secondary: #0f2942;
    --light-gray: #e2e8f0;

    /* Semantic Colors */
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Transitions */
    --transition-fast: 200ms ease-out;
    --transition-base: 250ms ease-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-slate);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-2xl);
    }
}

/* Navigation */
.navbar {
    background-color: var(--dark-slate);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-logo {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--sky-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

@media (max-width: 767px) {
    .nav-links {
        gap: var(--space-md);
        font-size: 0.875rem;
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

@media (max-width: 767px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.25rem;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark-slate) 0%, var(--bg-secondary) 100%);
    color: var(--white);
    padding: var(--space-4xl) 0;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--space-lg);
    line-height: 1.1;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--sky-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--light-gray);
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 767px) {
    .hero {
        padding: var(--space-3xl) 0;
        min-height: 500px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--dark-slate);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(88, 218, 125, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: var(--dark-slate);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.125rem;
}

/* Sections */
.section {
    padding: var(--space-4xl) 0;
}

.section-light {
    background-color: var(--white);
}

.section-dark {
    background-color: var(--dark-slate);
    color: var(--white);
}

.section-cta {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--dark-slate) 100%);
    color: var(--white);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--light-gray);
}

.section-light .section-intro {
    color: var(--soft-gray);
}

/* Content Split */
.content-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

@media (max-width: 991px) {
    .content-split {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

.large-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-slate);
    margin-bottom: var(--space-lg);
}

.stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--soft-gray);
}

/* Problem Cards */
.content-visual {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.problem-card {
    background-color: var(--bg-light);
    padding: var(--space-lg);
    border-radius: 12px;
    border-left: 4px solid var(--error);
}

.problem-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.problem-card h4 {
    color: var(--dark-slate);
    margin-bottom: var(--space-sm);
}

.problem-card p {
    color: var(--soft-gray);
    margin: 0;
    font-size: 0.875rem;
}

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

.feature-card {
    background-color: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: 12px;
    border: 1px solid rgba(88, 218, 125, 0.2);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 12px 24px rgba(88, 218, 125, 0.2);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    color: var(--primary);
    margin-bottom: var(--space-md);
}

.feature-card p {
    color: var(--light-gray);
    margin: 0;
}

/* API Showcase */
.api-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

.api-card {
    background-color: var(--bg-light);
    padding: var(--space-2xl);
    border-radius: 12px;
    border: 1px solid var(--light-gray);
}

.api-header {
    margin-bottom: var(--space-lg);
}

.api-badge {
    display: inline-block;
    background-color: var(--primary);
    color: var(--dark-slate);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: monospace;
    margin-bottom: var(--space-md);
}

.api-card h3 {
    color: var(--dark-slate);
    margin-bottom: var(--space-sm);
}

.api-card p {
    color: var(--soft-gray);
    margin-bottom: var(--space-lg);
}

.code-preview {
    background-color: var(--dark-slate);
    padding: var(--space-lg);
    border-radius: 8px;
    overflow-x: auto;
}

.code-preview code {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--light-gray);
}

.comment {
    color: var(--soft-gray);
}

.keyword {
    color: var(--sky-blue);
}

.method {
    color: var(--primary);
}

.string {
    color: #f59e0b;
}

.boolean {
    color: var(--soft-purple);
}

/* Value Grid */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-xl);
}

.value-card {
    text-align: center;
    padding: var(--space-xl);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.value-card h3 {
    color: var(--primary);
    margin-bottom: var(--space-md);
}

.value-card p {
    color: var(--light-gray);
    margin: 0;
}

/* Use Cases Detailed */
.use-cases-detailed {
    margin-top: var(--space-3xl);
    padding-top: var(--space-3xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.use-cases-detailed h3 {
    color: var(--primary);
    margin-bottom: var(--space-2xl);
    font-size: 1.75rem;
    text-align: center;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-xl);
}

.use-case-item {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--space-xl);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.use-case-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(88, 218, 125, 0.4);
    transform: translateY(-4px);
}

.use-case-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.use-case-icon {
    font-size: 2rem;
    line-height: 1;
}

.use-case-item h4 {
    color: var(--primary);
    margin: 0;
    font-size: 1.125rem;
}

.use-case-item p {
    color: var(--light-gray);
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.6;
}

@media (max-width: 767px) {
    .use-case-grid {
        grid-template-columns: 1fr;
    }
}

/* CTA Section */
.cta-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--light-gray);
    margin-bottom: var(--space-2xl);
}

/* Waitlist Form */
.waitlist-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
}

.form-group-inline {
    display: flex;
    gap: var(--space-md);
    width: 100%;
    max-width: 600px;
}

.form-input-large {
    flex: 1;
    padding: 16px 20px;
    font-size: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-family: var(--font-primary);
    transition: all var(--transition-fast);
}

.form-input-large::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-input-large:focus {
    outline: none;
    border-color: var(--primary);
    background-color: rgba(255, 255, 255, 0.15);
}

.form-note {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.waitlist-success {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
    background-color: rgba(88, 218, 125, 0.1);
    border: 2px solid var(--primary);
    border-radius: 12px;
    margin-top: var(--space-xl);
}

.success-icon {
    font-size: 3rem;
    color: var(--primary);
}

.waitlist-success p {
    font-size: 1.125rem;
    color: var(--primary);
    margin: 0;
}

@media (max-width: 767px) {
    .form-group-inline {
        flex-direction: column;
    }
}

/* Footer */
.footer {
    background-color: var(--dark-slate);
    color: var(--white);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand h3 {
    color: var(--primary);
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: var(--light-gray);
    font-size: 0.875rem;
}

.mission-text {
    color: var(--light-gray);
    line-height: 1.8;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--soft-gray);
    font-size: 0.875rem;
    margin: 0;
}

@media (max-width: 767px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

/* Animations */
@media (prefers-reduced-motion: no-preference) {
    .feature-card,
    .use-case,
    .btn {
        transition: all var(--transition-base);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}