/* ===================================
   TechVision - Modern Single Page Website
   Premium Design with Gradients & Animations
   =================================== */
/* === CSS Variables === */
:root {
  /* Colors */
  --color-primary: hsl(220, 90%, 56%);
  --color-primary-dark: hsl(220, 90%, 45%);
  --color-secondary: hsl(280, 70%, 60%);
  --color-accent: hsl(340, 82%, 52%);
  --color-success: hsl(142, 71%, 45%);
  /* Dark Theme */
  --color-bg: hsl(220, 20%, 10%);
  --color-surface: hsl(220, 15%, 15%);
  --color-surface-light: hsl(220, 15%, 20%);
  --color-text: hsl(0, 0%, 95%);
  --color-text-secondary: hsl(0, 0%, 70%);
  --color-border: hsl(220, 15%, 25%);
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(37, 99, 235, 0.8) 0%, rgba(124, 58, 237, 0.8) 100%);
  /* Spacing */
  --section-padding: 100px 0;
  --container-padding: 0 20px;
  /* Typography */
  --font-primary: 'Noto Sans Thai', 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.5);
}
/* === Base Styles === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}
body {
  font-family: var(--font-primary);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--container-padding);
}
/* === Header === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: all var(--transition-base);
  padding: 20px 0;
}
.site-header.sticky {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding: 15px 0;
}
.site-header.hidden {
  transform: translateY(-100%);
}
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}
.logo-icon {
  font-size: 32px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
  margin: 0;
}
.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color var(--transition-fast);
  padding: 5px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}
.nav-links a:hover,
.nav-links a.active {
  background-color: transparent !important;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
/* Language Switcher */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text);
}
.lang-switch:hover {
  background: var(--color-surface-light);
  border-color: var(--color-primary);
}
/* === Hero Section === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.hero-slide {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}
.slide-1 {
  background-image: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?w=1920&h=1080&fit=crop');
}
.slide-2 {
  background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?w=1920&h=1080&fit=crop');
}
.slide-3 {
  background-image: url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?w=1920&h=1080&fit=crop');
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  opacity: 0.9;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  animation: fadeInUp 1s ease;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.gradient-text {
  background: linear-gradient(135deg, #60efff 0%, #0061ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  max-width: 600px;
}
.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.8);
  animation: bounce 2s infinite;
  z-index: 3;
}
.scroll-arrow {
  font-size: 24px;
}
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* === Buttons === */
.btn {
  padding: 0 32px;
  border-radius: 50px;
  font-weight: 600;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}
.btn.outline {
  background: transparent;
  border-color: white;
  color: white;
}
.btn.outline:hover {
  background: white;
  color: var(--color-primary);
}
/* === Section Styles === */
section {
  padding: var(--section-padding);
  position: relative;
}
.section-header {
  margin-bottom: 60px;
}
.section-header.center {
  text-align: center;
}
.section-label {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}
.section-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}
/* === About Section === */
.about-section {
  background: var(--color-surface);
}
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.about-text h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}
.about-text p {
  margin-bottom: 25px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.expertise-list {
  list-style: none;
  display: grid;
  gap: 15px;
}
.expertise-list li {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: var(--color-surface-light);
  border-radius: 10px;
  transition: all var(--transition-base);
}
.expertise-list li:hover {
  transform: translateX(10px);
  background: rgba(59, 130, 246, 0.1);
}
.expertise-list .icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  color: white;
  font-weight: bold;
}
.image-wrapper {
  position: relative;
}
.image-decoration {
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 20px;
  z-index: -1;
  opacity: 0.3;
}
.about-image img {
  width: 100%;
  border-radius: 20px;
}
/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}
.stat-card {
  background: var(--color-surface-light);
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}
.stat-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.stat-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}
.stat-value {
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}
.stat-label {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}
/* === Services Section === */
.filter-controls {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 0 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 25px;
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}
.service-card {
  background: var(--color-surface);
  padding: 40px 30px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}
.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}
.service-icon {
  font-size: 3.5rem;
  margin-bottom: 20px;
}
.service-title {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--color-text);
}
.service-description {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}
.service-features {
  list-style: none;
}
.service-features li {
  padding: 8px 0;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: 25px;
}
.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}
/* === Portfolio Section === */
.portfolio-section {
  background: var(--color-surface);
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}
.portfolio-item {
  position: relative;
  border-radius: 15px;
  overflow: hidden;
  cursor: pointer;
}
.portfolio-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.portfolio-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  opacity: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  transition: opacity var(--transition-base);
}
.portfolio-item:hover .portfolio-img {
  transform: scale(1.1);
}
.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}
.portfolio-info {
  text-align: center;
  color: white;
}
.portfolio-title {
  font-size: 1.5rem;
  margin-bottom: 5px;
}
.portfolio-category {
  font-size: 0.9rem;
  opacity: 0.9;
}
.portfolio-view-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: white;
  color: var(--color-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: all var(--transition-base);
}
.portfolio-view-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}
/* === Team Section === */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}
.team-card {
  background: var(--color-surface);
  border-radius: 20px;
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}
.team-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}
.team-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
}
.team-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.team-card:hover .team-photo {
  transform: scale(1.1);
}
.team-social {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.team-card:hover .team-social {
  opacity: 1;
}
.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: white;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition-fast);
}
.social-link:hover {
  background: var(--color-primary);
  color: white;
  transform: scale(1.1);
}
.team-info {
  padding: 30px;
  text-align: center;
}
.team-name {
  font-size: 1.3rem;
  margin-bottom: 5px;
}
.team-role {
  color: var(--color-primary);
  margin-bottom: 15px;
  font-weight: 500;
}
.team-bio {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}
/* === Testimonials Section === */
.testimonials-section {
  background: var(--color-surface);
}
.testimonials-slider {
  max-width: 900px;
  margin: 0 auto;
}
.testimonial-card {
  background: var(--color-surface-light);
  padding: 50px 40px;
  border-radius: 20px;
  text-align: center;
  border: 1px solid var(--color-border);
}
.testimonial-rating {
  margin-bottom: 25px;
  font-size: 1.5rem;
}
.star {
  color: #fbbf24;
}
.testimonial-text {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 30px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.author-avatar {
  width: 60px !important;
  height: 60px !important;
  border-radius: 50%;
  border: 3px solid var(--color-primary);
}
.author-info {
  text-align: left;
}
.author-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 5px;
}
.author-company {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0;
}
/* === Contact Section === */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 25px;
}
.info-card {
  background: var(--color-surface);
  padding: 25px;
  border-radius: 15px;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}
.info-card:hover {
  border-color: var(--color-primary);
  transform: translateX(10px);
}
.info-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}
.info-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.info-card p {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}
.contact-form-wrapper {
  background: var(--color-surface);
  padding: 40px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}
.required {
  color: var(--color-accent);
}
.form-actions {
  margin-top: 30px;
}
/* === Footer === */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.footer-content {
  padding: 80px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-description {
  color: var(--color-text-secondary);
  margin-bottom: 25px;
  line-height: 1.7;
}
.social-links {
  display: flex;
  gap: 15px;
}
.footer-col h4 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--color-text);
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 12px;
}
.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--color-primary);
}
.newsletter-form {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}
.newsletter-form input {
  flex: 1;
}
.newsletter-form .btn {
  padding: 12px 24px;
}
.footer-bottom {
  padding: 25px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-secondary);
}
/* Scroll to Top Button */
.scroll-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
}
.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
}
.scroll-top-btn:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}
/* === Modal === */
.modal-portfolio .modal-content {
  width: 900px;
  max-width: 90vw;
  background: var(--color-surface);
  border-radius: 20px;
  position: relative;
}
.modal-body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  padding: 40px;
}
.modal-image {
  width: 100%;
  border-radius: 15px;
}
.modal-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.modal-title {
  font-size: 2rem;
  color: var(--color-text);
}
.modal-category {
  color: var(--color-primary);
  font-weight: 500;
}
.modal-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.modal-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}
.meta-item {
  display: flex;
  gap: 10px;
}
.modal-close,
.modal-prev,
.modal-next {
  position: absolute;
  width: 50px;
  height: 50px;
  padding: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  font-size: 30px;
  cursor: pointer;
  transition: all var(--transition-base);
}
.modal-prev,
.modal-next {
  top: 50%;
  margin-top: -25px;
}
.modal-close:hover,
.modal-prev:hover,
.modal-next:hover {
  background: var(--color-primary);
  transform: scale(1.1);
}
.modal-close {
  right: -25px;
  top: -25px;
}
.modal-prev {
  left: -25px;
}
.modal-next {
  right: -25px;
}
/* === Scroll Reveal Animations === */
[data-scroll-reveal] {
  opacity: 0;
  transition: all 0.8s ease;
}
[data-scroll-reveal].visible {
  opacity: 1;
}
[data-scroll-reveal="fade-up"] {
  transform: translateY(50px);
}
[data-scroll-reveal="fade-up"].visible {
  transform: translateY(0);
}
[data-scroll-reveal="fade-right"] {
  transform: translateX(-50px);
}
[data-scroll-reveal="fade-right"].visible {
  transform: translateX(0);
}
[data-scroll-reveal="fade-left"] {
  transform: translateX(50px);
}
[data-scroll-reveal="fade-left"].visible {
  transform: translateX(0);
}
[data-scroll-reveal="scale-in"] {
  transform: scale(0.8);
}
[data-scroll-reveal="scale-in"].visible {
  transform: scale(1);
}
/* === Responsive Design === */
@media (max-width: 1024px) {
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .modal-body {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid,
  .portfolio-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .section-padding {
    padding: 60px 0;
  }
}
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .filter-controls {
    flex-direction: column;
  }
  .filter-btn {
    width: 100%;
  }
}