/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    /* Brand Colors */
    --color-primary: #8BCF3E;
    --color-primary-dark: #5FAE2E;
    --color-primary-darker: #478223;
    --color-secondary: #F28C28;
    --color-secondary-dark: #D96A0C;

    /* Background Colors */
    --color-bg-dark: #121417;
    --color-bg-card: #1C1F24;
    --color-bg-darker: #0f1219;

    /* Text Colors */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #DADADA;
    --color-text-muted: #9ca3af;

    /* Accent Colors */
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

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

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--color-bg-dark);
    color: var(--color-text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-2xl) 0;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(18, 20, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.logo svg {
    flex-shrink: 0;
}

.logo-text span {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-links a {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.nav-link-github {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-cta {
    margin-left: auto;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition-fast);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-primary {
    background: var(--color-primary-dark);
    color: white;
    box-shadow: 0 4px 12px rgba(139, 207, 62, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-darker);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 207, 62, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding-top: calc(var(--spacing-2xl) + 80px);
    padding-bottom: var(--spacing-2xl);
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(139, 207, 62, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(139, 207, 62, 0.1);
    border: 1px solid rgba(139, 207, 62, 0.3);
    border-radius: 50px;
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero-features {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.hero-feature svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.hero-visual {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
}

/* Code Window */
.code-window {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    width: 100%;
}

.window-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.window-controls {
    display: flex;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.window-title {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.window-content {
    padding: var(--spacing-lg);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.95rem;
}

.code-line {
    display: flex;
    margin-bottom: 8px;
}

.code-indent {
    width: 20px;
    flex-shrink: 0;
}

.line-number {
    color: var(--color-text-muted);
    user-select: none;
    min-width: 20px;
}

.voice-input {
    background: rgba(139, 207, 62, 0.1);
    margin: 8px -16px;
    padding: 4px 16px;
}

.code-comment { color: #6a9955; }
.code-string { color: #ce9178; }
.code-keyword { color: #569cd6; }
.code-function { color: #dcdcaa; }
.code-text { color: var(--color-text-secondary); }

/* Keyboard */
kbd {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Consolas', 'Monaco', monospace;
    color: var(--color-text-primary);
}

/* ============================================
   Problem Section
   ============================================ */
.problem-section {
    background: var(--color-bg-darker);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.problem-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

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

.problem-card h3 {
    margin-bottom: var(--spacing-sm);
}

.problem-card p {
    color: var(--color-text-muted);
}

/* ============================================
   Section Titles
   ============================================ */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

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

/* ============================================
   How It Works
   ============================================ */
.how-it-works {
    background: var(--color-bg-dark);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.step-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: var(--color-bg-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.step-icon {
    color: var(--color-primary);
    margin: var(--spacing-lg) 0;
}

.step-card h3 {
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    color: var(--color-text-muted);
}

/* Examples Section */
.examples-section {
    margin-top: var(--spacing-2xl);
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.examples-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.examples-tabs {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.example-tab {
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
    font-weight: 500;
}

.example-tab:hover {
    background: rgba(255, 255, 255, 0.1);
}

.example-tab.active {
    background: var(--color-primary);
    color: var(--color-bg-dark);
    border-color: var(--color-primary);
}

.examples-content {
    position: relative;
    min-height: 200px;
}

.example-block {
    display: none;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.example-block.active {
    display: grid;
}

.example-input,
.example-output {
    background: var(--color-bg-darker);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.example-label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.example-input p {
    font-size: 1.1rem;
    color: var(--color-text-primary);
}

.example-arrow {
    font-size: 2rem;
    color: var(--color-primary);
    font-weight: 700;
}

.example-output pre {
    margin: 0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.95rem;
    color: var(--color-text-primary);
}

.example-output code {
    display: block;
    white-space: pre;
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    background: var(--color-bg-darker);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(139, 207, 62, 0.3);
}

.feature-icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   Use Cases
   ============================================ */
.use-cases {
    background: var(--color-bg-dark);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.use-case-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: transform var(--transition-normal);
}

.use-case-card:hover {
    transform: translateY(-4px);
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.use-case-card h3 {
    margin-bottom: var(--spacing-sm);
}

.use-case-card p {
    color: var(--color-text-muted);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing-section {
    background: var(--color-bg-darker);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.pricing-card-featured {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(139, 207, 62, 0.2);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-bg-dark);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
}

.price-period {
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.pricing-features {
    margin-bottom: var(--spacing-lg);
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.pricing-feature svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.pricing-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-section {
    background: var(--color-bg-dark);
}

.faq-grid {
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.03);
}

.faq-question h3 {
    font-size: 1.1rem;
    margin: 0;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 300;
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   Download Section
   ============================================ */
.download-section {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-darker) 100%);
    padding: var(--spacing-2xl) 0;
}

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

.download-card h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.download-card p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
}

.download-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.download-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg-darker);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--color-primary);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .nav-content {
        flex-wrap: wrap;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: var(--spacing-md) 0;
        order: 4;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-cta {
        display: none;
        width: 100%;
        order: 5;
        padding-bottom: var(--spacing-md);
    }

    .nav-cta.active {
        display: block;
    }

    .nav-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .mobile-menu-toggle {
        display: flex;
        order: 3;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        padding-top: calc(var(--spacing-xl) + 60px);
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .steps-grid,
    .features-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .example-block {
        grid-template-columns: 1fr;
    }

    .example-arrow {
        text-align: center;
        transform: rotate(90deg);
    }

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

    .download-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .examples-tabs {
        flex-direction: column;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Scroll animations will be added via JavaScript */