/* ========================================
   GLOBAL STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --text-dark: #1a202c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --success: #48bb78;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

section {
    padding: 80px 0;
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 16px 0;
}

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

.logo-text {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.logo-by {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 500;
}

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

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

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

.btn-nav {
    padding: 8px 20px;
    border-radius: 8px;
    background: var(--gradient);
    color: white !important;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

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

.btn-secondary:hover {
    background: var(--bg-light);
}

.btn-outline {
    background: transparent;
    color: var(--text-dark);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-full {
    width: 100%;
    text-align: center;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    padding-top: 140px;
    padding-bottom: 100px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.hero-by {
    font-size: 16px;
    opacity: 0.85;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.hero-subtitle {
    font-size: 22px;
    margin-bottom: 40px;
    opacity: 0.95;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 16px;
}

.hero-note {
    font-size: 14px;
    opacity: 0.9;
}

.demo-preview {
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

.demo-card {
    background: white;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    margin: 0 auto;
}

.demo-header {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.demo-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.demo-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.demo-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ========================================
   SECTION STYLES
   ======================================== */
.section-title {
    font-size: 40px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.label {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 16px;
    text-transform: uppercase;
}

/* ========================================
   PROBLEM SECTION
   ======================================== */
.problem-section {
    background: var(--bg-light);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.problem-card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.problem-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.problem-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.problem-card p {
    color: var(--text-medium);
    font-size: 15px;
}

/* ========================================
   SOLUTION SECTION
   ======================================== */
.solution-section {
    background: white;
}

.solution-content {
    max-width: 700px;
    margin: 0 auto;
}

.solution-text {
    text-align: center;
}

.steps {
    margin-top: 48px;
}

.step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    align-items: flex-start;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-medium);
    font-size: 16px;
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features-section {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.feature-card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-medium);
    font-size: 15px;
    line-height: 1.6;
}

/* ========================================
   USE CASES SECTION
   ======================================== */
.use-cases-section {
    background: white;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.use-case-card {
    background: var(--bg-light);
    padding: 32px;
    border-radius: 16px;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

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

.use-case-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.use-case-card p {
    color: var(--text-medium);
    font-size: 15px;
}

/* ========================================
   PRICING SECTION
   ======================================== */
.pricing-section {
    background: var(--bg-light);
}

.pricing-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-medium);
    margin-bottom: 48px;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    border: 2px solid var(--border);
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.2);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.price {
    margin-bottom: 32px;
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    font-size: 18px;
    color: var(--text-light);
    margin-left: 4px;
}

.pricing-features {
    margin-bottom: 32px;
}

.feature-item {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--bg-light);
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-item.disabled {
    opacity: 0.4;
}

.check {
    color: var(--success);
    font-weight: 700;
    font-size: 18px;
}

.cross {
    color: var(--text-light);
    font-weight: 700;
    font-size: 18px;
}

.pricing-note {
    text-align: center;
    font-size: 14px;
    color: var(--text-light);
    margin-top: 16px;
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq-section {
    background: white;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.faq-item h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.faq-item p {
    color: var(--text-medium);
    font-size: 15px;
    line-height: 1.6;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    background: var(--gradient);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 44px;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 16px;
}

.cta-note {
    font-size: 14px;
    opacity: 0.9;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-section a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 8px;
    transition: color 0.2s;
}

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

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .demo-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .nav-links {
        gap: 16px;
    }
    
    .nav-links a:not(.btn-nav) {
        display: none;
    }
    
    .features-grid,
    .use-cases-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-content h2 {
        font-size: 32px;
    }
}