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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border-color: #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #667eea;
    margin: 0;
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #667eea;
}

.nav-cta {
    background: #667eea;
    color: white !important;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: #5a67d8;
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #4a5568;
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Terminal Window */
.terminal-window {
    background: #1a202c;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    max-width: 500px;
    width: 100%;
}

.terminal-header {
    background: #2d3748;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.terminal-buttons {
    display: flex;
    gap: 6px;
}

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

.terminal-button.red {
    background: #fc8181;
}

.terminal-button.yellow {
    background: #f6e05e;
}

.terminal-button.green {
    background: #68d391;
}

.terminal-title {
    color: #a0aec0;
    font-size: 0.875rem;
    font-weight: 500;
}

.terminal-body {
    padding: 20px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.terminal-line {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.terminal-prompt {
    color: #68d391;
    margin-right: 8px;
    font-weight: bold;
}

.terminal-command {
    color: #e2e8f0;
}

.terminal-output {
    color: #a0aec0;
    padding-left: 16px;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    color: #2d3748;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #4a5568;
    max-width: 600px;
    margin: 0 auto;
}

/* Problem Section */
.problem-section {
    background: #f7fafc;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.problem-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.problem-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
}

/* Solution Section */
.solution-section {
    background: white;
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.solution-intro {
    font-size: 1.25rem;
    color: #4a5568;
    margin-bottom: 2rem;
}

.solution-features {
    list-style: none;
}

.solution-features li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f7fafc;
    border-radius: 8px;
}

.feature-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

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

.workflow-step {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.step-number {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: #2d3748;
}

.step-content code {
    background: #edf2f7;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.875rem;
    color: #667eea;
}

.workflow-arrow {
    font-size: 1.5rem;
    color: #a0aec0;
    transform: rotate(90deg);
}

/* Features Section */
.features-section {
    background: #f7fafc;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.feature-card .feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
}

/* Installation Section */
.installation-section {
    background: white;
}

.installation-steps {
    margin-bottom: 3rem;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.step-number {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.code-block {
    background: #1a202c;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    margin: 1rem 0;
    position: relative;
    overflow-x: auto;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: #4a5568;
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.copy-btn:hover {
    background: #667eea;
}

.installation-note {
    background: #ebf8ff;
    border: 1px solid #bee3f8;
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.note-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.note-content h4 {
    color: #2b6cb0;
    margin-bottom: 0.5rem;
}

a {
    color: #667eea;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Usage Section */
.usage-section {
    background: #f7fafc;
}

.usage-example {
    margin-bottom: 4rem;
}

.terminal-example {
    background: #1a202c;
    border-radius: 12px;
    overflow: hidden;
    margin: 2rem 0;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.terminal-content {
    padding: 20px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.terminal-line {
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
}

.prompt {
    color: #68d391;
    margin-right: 8px;
    font-weight: bold;
    flex-shrink: 0;
}

.command {
    color: #e2e8f0;
}

.output {
    color: #a0aec0;
    padding-left: 24px;
}

.commands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.command-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.command-card h4 {
    color: #2d3748;
    margin-bottom: 1rem;
}

/* Models Section */
.models-section {
    background: white;
}

.models-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.category-card {
    background: #f7fafc;
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.category-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
}

.category-card ul {
    list-style: none;
}

.category-card li {
    margin-bottom: 0.5rem;
    color: #4a5568;
}

.models-note {
    text-align: center;
    background: #ebf8ff;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #bee3f8;
}

.models-note code {
    background: #2d3748;
    color: #e2e8f0;
    padding: 4px 8px;
    border-radius: 4px;
}

/* Benefits Section */
.benefits-section {
    background: #f7fafc;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.benefit-number {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
}

.benefit-card h3 {
    color: #2d3748;
    margin-bottom: 1rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: white;
    color: #667eea;
}

.cta-section .btn-primary:hover {
    background: #f7fafc;
}

.cta-section .btn-secondary {
    border-color: white;
    color: white;
}

.cta-section .btn-secondary:hover {
    background: white;
    color: #667eea;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #a0aec0;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #4a5568;
    padding-top: 1rem;
    text-align: center;
    color: #a0aec0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .workflow-diagram {
        flex-direction: column;
    }
    
    .workflow-arrow {
        transform: rotate(0deg);
    }
    
    .step {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .features-grid,
    .problem-grid,
    .commands-grid,
    .models-categories,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .terminal-window {
        max-width: 100%;
    }
    
    .code-block {
        font-size: 0.75rem;
    }
}

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

.hero-content,
.hero-visual {
    animation: fadeInUp 0.8s ease-out;
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .cta-section,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .hero {
        padding: 20px 0;
        background: none;
    }
    
    section {
        padding: 20px 0;
        break-inside: avoid;
    }
}