/* ========== CSS Variables ========== */
:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --accent: #ff6b6b;
    --accent-orange: #ff9f43;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-dark: #1a202c;
    --border: #e2e8f0;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-cool: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* ========== Navbar ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 12px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.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: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: white;
    box-shadow: var(--shadow-md);
}

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

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

.btn-nav {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
}

/* ========== Hero Section ========== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary);
    bottom: -150px;
    left: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-orange);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
    opacity: 0.3;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-30px) scale(1.05);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    color: var(--primary);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.badge-icon {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

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

/* Floating Cards */
.hero-visual {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    animation: floatCard 6s ease-in-out infinite;
}

.card-icon {
    font-size: 1.5rem;
}

.card-1 {
    top: 20%;
    left: 5%;
    animation-delay: 0s;
}

.card-2 {
    top: 30%;
    right: 5%;
    animation-delay: -1.5s;
}

.card-3 {
    bottom: 30%;
    left: 8%;
    animation-delay: -3s;
}

.card-4 {
    bottom: 20%;
    right: 8%;
    animation-delay: -4.5s;
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

/* ========== Section Common ========== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== Pain Points ========== */
.pain-points {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.pain-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.pain-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pain-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.pain-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.pain-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.solution-arrow {
    text-align: center;
    margin: 40px 0;
}

.arrow-down {
    font-size: 2rem;
    color: var(--primary);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

.solution-arrow p {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-top: 8px;
}

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

.solution-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px solid transparent;
    background-image: linear-gradient(white, white), var(--gradient);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.solution-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.solution-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.solution-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========== Products ========== */
.products {
    padding: 100px 0;
}

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

.product-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.product-card.featured {
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--gradient);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.product-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.product-card > p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-features {
    margin-bottom: 20px;
}

.product-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-features li::before {
    content: '•';
    color: var(--primary);
    font-weight: bold;
}

.product-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.product-link:hover {
    gap: 8px;
}

/* ========== AI Section ========== */
.ai-section {
    padding: 100px 0;
    background: var(--bg-dark);
    color: white;
}

.ai-section .section-badge {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.ai-section .section-desc {
    color: rgba(255, 255, 255, 0.7);
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.ai-feature {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.ai-feature:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.ai-feature-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.5;
    flex-shrink: 0;
}

.ai-feature-content h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.ai-feature-content p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.ai-demo {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(0, 0, 0, 0.3);
    padding: 20px;
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.demo-input, .demo-output {
    flex: 1;
    min-width: 200px;
}

.demo-label {
    display: block;
    font-size: 0.8rem;
    color: var(--primary);
    margin-bottom: 4px;
    font-weight: 600;
}

.demo-arrow {
    font-size: 1.5rem;
    color: var(--primary);
}

/* ========== Cases ========== */
.cases {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.case-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-emoji {
    font-size: 4rem;
    filter: grayscale(0);
}

.case-content {
    padding: 24px;
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.case-content h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.case-content > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.case-stats {
    display: flex;
    gap: 24px;
}

.case-stat {
    text-align: center;
}

.case-stat strong {
    display: block;
    font-size: 1.5rem;
    color: var(--primary);
}

.case-stat span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ========== Pricing ========== */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 6px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

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

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    vertical-align: top;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-amount.custom {
    font-size: 1.75rem;
}

.price-period {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.check {
    color: #48bb78;
}

.cross {
    color: #fc8181;
}

.disabled {
    color: var(--text-muted);
}

.pricing-note {
    text-align: center;
    margin-top: 40px;
    color: var(--text-secondary);
}

.pricing-note strong {
    color: var(--primary);
}

/* ========== Contact ========== */
.contact {
    padding: 100px 0;
    background: var(--gradient);
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
}

.method-icon {
    font-size: 1.5rem;
}

.contact-method strong {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
}

.contact-method span {
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.contact-form .btn-primary {
    color: white;
}

/* ========== Footer ========== */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    margin-top: 12px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    font-size: 0.9rem;
    margin-bottom: 20px;
    opacity: 0.8;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    padding: 6px 0;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .products-grid,
    .cases-grid,
    .pricing-grid,
    .pain-grid,
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .floating-card {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .products-grid,
    .cases-grid,
    .pricing-grid,
    .pain-grid,
    .solution-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-5px);
    }
    
    .ai-feature {
        flex-direction: column;
        gap: 16px;
    }
    
    .ai-feature-number {
        font-size: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
    
    .ai-demo {
        flex-direction: column;
    }
    
    .demo-arrow {
        transform: rotate(90deg);
    }
}

/* ========== Animations ========== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0) translateX(0);
}