/* CSS Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #f43f5e;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-secondary: linear-gradient(135deg, #f43f5e 0%, #fb7185 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--gray-300);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

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

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--gray-300);
    border: 1px solid var(--gray-600);
}

.btn-secondary:hover {
    background: var(--gray-800);
    border-color: var(--gray-500);
}

.btn-outline {
    background: transparent;
    color: var(--gray-300);
    border: 2px solid var(--gray-600);
}

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

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
}

.logo-icon {
    font-size: 26px;
}

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

.nav-links a {
    color: var(--gray-400);
    font-weight: 500;
    font-size: 15px;
}

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

.btn-nav {
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: var(--white) !important;
    border-radius: var(--radius);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 40% 30% at 20% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    animation: bgPulse 8s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-content {
    position: relative;
    max-width: 720px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out;
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.1s backwards;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 40px;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.hero-stats {
    display: flex;
    gap: 48px;
    animation: fadeInUp 0.6s ease-out 0.4s backwards;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-500);
}

/* Floating Cards */
.hero-decoration {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    display: none;
}

@media (min-width: 1024px) {
    .hero-decoration {
        display: block;
    }
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    color: var(--white);
    font-weight: 500;
    animation: float 6s ease-in-out infinite;
}

.card-icon {
    font-size: 24px;
}

.card-1 { top: -100px; right: 0; animation-delay: 0s; }
.card-2 { top: 50px; right: -50px; animation-delay: 2s; }
.card-3 { top: 200px; right: 30px; animation-delay: 4s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

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

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    font-size: 13px;
    color: var(--primary-light);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--gray-400);
}

/* Services Section */
.services {
    background: var(--dark);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.service-card {
    position: relative;
    padding: 32px;
    background: var(--dark-light);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

.service-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.featured-badge {
    position: absolute;
    top: -10px;
    right: 24px;
    padding: 4px 12px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius);
    margin-bottom: 20px;
    color: var(--primary-light);
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 20px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-features li {
    font-size: 13px;
    color: var(--gray-500);
    padding-left: 20px;
    position: relative;
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Portfolio Section */
.portfolio {
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.portfolio-card {
    background: var(--dark-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    position: relative;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
}

.portfolio-category {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 12px;
    color: var(--white);
}

.portfolio-content {
    padding: 24px;
}

.portfolio-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 8px;
}

.portfolio-content p {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 16px;
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.portfolio-tech span {
    padding: 4px 10px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50px;
    font-size: 12px;
    color: var(--primary-light);
}

/* Pricing Section */
.pricing {
    background: var(--dark);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: 40px 32px;
    background: var(--dark-light);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-8px);
}

.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.05) 100%);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

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

.pricing-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.pricing-header p {
    font-size: 14px;
    color: var(--gray-500);
}

.pricing-price {
    padding: 30px 0;
}

.price-amount {
    font-size: 42px;
    font-weight: 800;
    color: var(--white);
}

.price-period {
    display: block;
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 4px;
}

.pricing-features {
    text-align: left;
    margin-bottom: 30px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--gray-400);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.pricing-features .check {
    color: var(--accent);
    font-weight: bold;
}

/* Contact Section */
.contact {
    background: linear-gradient(180deg, var(--dark-light) 0%, var(--dark) 100%);
}

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

@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.contact-info .section-badge {
    margin-bottom: 16px;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.contact-info > p {
    color: var(--gray-400);
    margin-bottom: 32px;
}

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

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

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius);
    color: var(--primary-light);
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 12px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-text a {
    color: var(--white);
    font-weight: 500;
}

.contact-text a:hover {
    color: var(--primary-light);
}

/* Contact Form */
.contact-form {
    padding: 40px;
    background: var(--dark-light);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-300);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    color: var(--white);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.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(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-600);
}

.form-group select {
    cursor: pointer;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.footer-brand .logo {
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .footer-brand .logo {
        justify-content: center;
    }
}

.footer-brand p {
    font-size: 14px;
    color: var(--gray-500);
    max-width: 320px;
}

@media (max-width: 768px) {
    .footer-brand p {
        max-width: none;
    }
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 12px;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-600);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .stat {
        flex: 1;
        min-width: 80px;
        text-align: center;
    }
    
    .services-grid,
    .portfolio-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
}

/* Animations on Scroll */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}