:root {
  --color-primary: #212A3E;
  --color-secondary: #394867;
  --color-light: #F1F6F9;
  --color-accent: #9BA4B5;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  --font-primary: 'Chakra Petch', sans-serif;
  --font-secondary: 'Rajdhani', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--color-primary);
  background-color: var(--color-light);
  overflow-x: hidden;
}

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

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



button,
.btn {
  cursor: pointer;
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-secondary);
  color: var(--color-light);
  border: none;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}


.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.section {
  padding: var(--space-md) 0;
}

.grid {
  display: grid;
  gap: var(--space-md);
}

.flex {
  display: flex;
}

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

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

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

.header {
  position: relative;
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: var(--space-sm) 0;
  z-index: 100;
  transition: transform var(--transition-medium);
}

.header.hidden {
  transform: translateY(-100%);
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  width: 4rem;
  position: relative;
  z-index: 20;
}

.logo img {
  display: inline-block;
  transform: rotate(-5deg);
  transition: transform var(--transition-normal);
}

.logo:hover img {
  transform: rotate(0);
}

@media (max-width: 992px) {
  .logo img {
    width: 3rem;
    position: relative;
    z-index: 20;
  }
}

@media (max-width: 768px) {
  .logo img {
    width: 3rem;
    position: relative;
    z-index: 20;
  }
}

@media (max-width: 576px) {
  .logo img {
    width: 2rem;
    position: relative;
    z-index: 20;
  }
}

@media (max-width: 400px) {
  .logo img {
    width: 2rem;
    position: relative;
    z-index: 20;
  }
}

.nav-desktop {
  display: none;
}

.nav-mobile-toggle {
  background: none;
  border: none;
  color: var(--color-light);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 110;
}

.nav-mobile {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
  z-index: 100;
}

.nav-mobile.active {
  opacity: 1;
  pointer-events: all;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.nav-link {
  color: var(--color-light);
  font-size: var(--font-size-lg);
  font-weight: 600;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-medium);
}

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

.hero {
  position: relative;
  height: 80vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-light);
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(33, 42, 62, 0.8);
  z-index: -1;
}

.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(to right, var(--color-accent) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-accent) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.2;
  z-index: -1;
}

.hero-title {
  font-family: var(--font-secondary);
  font-size: var(--font-size-3xl);
  font-weight: bold;
  margin-bottom: var(--space-sm);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
}

.hero-btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: bold;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.hero-btn:hover {
  background-color: var(--color-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.features {
  padding: var(--space-lg) 0;
}

.section-title {
  font-family: var(--font-secondary);
  font-size: var(--font-size-2xl);
  text-align: center;
  margin-bottom: var(--space-lg);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
}

.features-grid {
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.feature-card {
  background-color: white;
  padding: var(--space-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: var(--font-size-2xl);
  color: var(--color-secondary);
  margin-bottom: var(--space-sm);
}

.feature-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.feature-text {
  color: var(--color-secondary);
}

.courses {
  background-color: var(--color-secondary);
  color: var(--color-light);
  padding: var(--space-lg) 0;
}

.courses-grid {
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.course-card {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: transform var(--transition-medium);
}

.course-card:hover {
  transform: translateY(-5px);
}

.course-img {
  height: 200px;
  object-fit: cover;
}

.course-content {
  padding: var(--space-md);
}

.course-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.course-price {
  font-size: var(--font-size-lg);
  font-weight: bold;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.course-text {
  margin-bottom: var(--space-md);
}

.course-btn {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: bold;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.course-btn:hover {
  background-color: var(--color-light);
}

.testimonials {
  padding: var(--space-lg) 0;
}

.testimonials-grid {
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.testimonial-card {
  background-color: white;
  padding: var(--space-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--space-md);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.testimonial-img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-name {
  font-weight: bold;
}

.testimonial-role {
  color: var(--color-accent);
  font-size: var(--font-size-sm);
}

.portfolio {
  padding: var(--space-lg) 0;
  background-color: var(--color-light);
}

.portfolio-grid {
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-md);
}

.portfolio-img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(33, 42, 62, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-item:hover .portfolio-img {
  transform: scale(1.1);
}

.portfolio-title {
  color: var(--color-light);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.portfolio-category {
  color: var(--color-accent);
}

.contact {
  padding: var(--space-lg) 0;
  background-color: var(--color-primary);
  color: var(--color-light);
}

.contact-grid {
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.contact-icon {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
}

.contact-form {
  background-color: rgba(255, 255, 255, 0.1);
  padding: var(--space-md);
  border-radius: var(--border-radius-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-sm);
  background-color: rgba(255, 255, 255, 0.8);
  border: none;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-primary);
  color: var(--color-primary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.form-submit {
  width: 100%;
  padding: var(--space-sm);
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: bold;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.form-submit:hover {
  background-color: var(--color-light);
}

.map {
  height: 300px;
  margin-top: var(--space-md);
}

.map iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--border-radius-md);
}

.footer {
  background-color: var(--color-secondary);
  color: var(--color-light);
  padding: var(--space-md) 0;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.footer-link {
  color: var(--color-accent);
}

.footer-link:hover {
  color: var(--color-light);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-light);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.copyright {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
}

.privacy-popup {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  padding: var(--space-md);
  background-color: var(--color-primary);
  color: var(--color-light);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: none;
}

.privacy-popup.active {
  display: block;
}

.privacy-content {
  margin-bottom: var(--space-md);
}

.privacy-buttons {
  display: flex;
  gap: var(--space-sm);
}

.privacy-accept,
.privacy-decline {
  padding: var(--space-xs) var(--space-md);
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-weight: 600;
}

.privacy-accept {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.privacy-decline {
  background-color: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

.thank-you {
  min-height: calc(100vh - 200px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-lg);
}

.thank-you-title {
  font-family: var(--font-secondary);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

.thank-you-text {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin-bottom: var(--space-lg);
}

.thank-you-btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-secondary);
  color: var(--color-light);
  font-weight: bold;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.thank-you-btn:hover {
  background-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.error-404 {
  min-height: calc(100vh - 200px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-lg);
}

.error-title {
  font-family: var(--font-secondary);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

.error-text {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin-bottom: var(--space-lg);
}

.error-btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-secondary);
  color: var(--color-light);
  font-weight: bold;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.error-btn:hover {
  background-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.policy {
  padding: var(--space-lg) 0;
}

.policy-title {
  font-family: var(--font-secondary);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
}

.policy-section {
  margin-bottom: var(--space-lg);
}

.policy-subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.policy-text {
  margin-bottom: var(--space-sm);
}

.policy-list {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.policy-item {
  margin-bottom: var(--space-xs);
}

@media (min-width: 768px) {

  .features-grid,
  .courses-grid,
  .testimonials-grid,
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }
}

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

  .nav-mobile-toggle {
    display: none;
  }

  .nav-list {
    flex-direction: row;
  }

  .features-grid,
  .courses-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-title {
    font-size: 3.5rem;
  }

  .section-title {
    font-size: 2.5rem;
  }
}