:root {
  --gradient-background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-color: #2563eb;
  --secondary-color: #64748b;
  --background-light: #ffffff;
  --background-dark: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --accent: #06b6d4;
  --shadow: rgba(0, 0, 0, 0.1);
  --button-primary: #4f46e5;
  --button-primary-hover: #4338ca;
  --button-secondary-border: rgba(79, 70, 229, 0.22);
  --border-radius: 8px;
  --spacing-unit: 8px;
  --font-primary:
    "Satoshi", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-secondary:
    "Satoshi", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.dark-mode-toggle {
  width: 100px;
  position: absolute;
  top: calc(var(--spacing-unit) * 3);
  left: calc(var(--spacing-unit) * 3);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  z-index: 10;
}

.toggler-container {
  width: 80px;
  height: 50px;
  border-radius: 60px;
  background-color: var(--secondary-color);
  padding: calc(var(--spacing-unit) * 0.5);
  display: flex;
  align-items: center;
  transition: background-color 0.3s ease;
}

.toggler {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--background-light);
  margin-left: calc(var(--spacing-unit) * 0.5);
  transition:
    transform 0.3s ease,
    background-color 0.3s ease,
    box-shadow 0.3s ease;
}

#darkModeSwitch:checked + .toggler-container .toggler {
  transform: translateX(30px);
  background-color: var(--accent);
  box-shadow:
    0 0 10px var(--accent),
    0 0 20px var(--accent);
}

.mode {
  color: var(--text-primary);
  text-transform: uppercase;
  font-weight: 600;
  font-family: var(--font-primary);
  font-size: 12px;
  margin-top: calc(var(--spacing-unit) * 0.5);
}

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  background-color: var(--background-light);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

body.dark-mode {
  --bg: #0b0d12;
  --bg-section: #10141c;
  --bg-card: #171d27;
  --bg-card-hover: #1c2330;
  --text: #f3f4f6;
  --text-muted: #a7b0c0;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #7c6cff;
  --accent-hover: #9388ff;
  --primary-color: var(--accent);
  --text-primary: var(--bg);
  --text-secondary: var(--text-muted);
  --background-light: var(--text);
  --background-dark: var(--bg-card);
  --button-primary: var(--accent);
  --button-primary-hover: var(--accent-hover);
  background-color: var(--bg);
  color: var(--text);
}

/* Hero Section */
.contact-hero {
  background: var(--gradient-background);
  padding: calc(var(--spacing-unit) * 12) calc(var(--spacing-unit) * 2);
  text-align: center;
  color: var(--background-light);
}

.contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 20% 80%,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%
  );
  pointer-events: none;
}

.contact-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 calc(var(--spacing-unit) * 2);
}

.contact-title {
  font-family: var(--font-secondary);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: calc(var(--spacing-unit) * 2);
  letter-spacing: -0.5px;
}

.contact-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
  line-height: 1.7;
}

.contact-hero .mode {
  color: var(--background-light);
}

/* Content Section */
.contact-content {
  background-color: var(--background-light);
  padding: calc(var(--spacing-unit) * 10) calc(var(--spacing-unit) * 2);
  flex: 1 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-unit) * 6);
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

/* GIF Section */
.contact-gif {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--spacing-unit) * 2);
}

.gif-image {
  width: 100%;
  max-width: 400px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 20px var(--shadow);
  transition: transform 0.3s ease;
}

.gif-image:hover {
  transform: scale(1.02);
}

.gif-caption {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-align: center;
  margin-top: calc(var(--spacing-unit) * 1);
}

/* Contact Methods Section */
.contact-methods {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 4);
}

.methods-title {
  font-family: var(--font-secondary);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.contact-option {
  padding: calc(var(--spacing-unit) * 3);
  background-color: var(--background-dark);
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}

.contact-option:hover {
  box-shadow: 0 4px 15px var(--shadow);
  transform: translateY(-2px);
}

.option-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.option-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.contact-link {
  font-weight: 600;
  color: var(--button-primary);
  text-decoration: none;
  transition:
    color 0.25s ease,
    text-underline-offset 0.25s ease,
    transform 0.25s ease;
  display: inline-block;
}

.contact-link:hover {
  color: var(--button-primary-hover);
  text-decoration: underline;
  text-underline-offset: 4px;
  transform: translateX(2px);
}

.contact-link:focus-visible,
.back-link:focus-visible,
.social-icon:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.32);
  outline-offset: 4px;
}

/* Social Icons */
.social-icons {
  display: flex;
  gap: calc(var(--spacing-unit) * 1.5);
  flex-wrap: wrap;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--button-primary);
  color: var(--background-light);
  transition:
    background-color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease;
  text-decoration: none;
  cursor: pointer;
}

.social-icon:hover {
  background-color: var(--button-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.22);
}

.social-icon svg {
  width: 20px;
  height: 20px;
}

/* CTA Section */
.contact-cta {
  padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 3);
  background: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.1) 0%,
    rgba(102, 126, 234, 0.1) 100%
  );
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent);
}

.cta-text {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  margin: 0;
}

/* Footer */
.contact-footer {
  background: var(--gradient-background);
  padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 2);
  text-align: center;
  margin-top: calc(var(--spacing-unit) * 6);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit) * 2);
}

.footer-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  margin: 0;
}

.back-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  transition:
    color 0.25s ease,
    text-underline-offset 0.25s ease,
    transform 0.25s ease;
}

.back-link:hover {
  color: var(--background-light);
  text-decoration: underline;
  text-underline-offset: 4px;
  transform: translateX(-2px);
}

body.dark-mode .contact-hero {
  background:
    radial-gradient(circle at 50% 40%, rgba(124, 108, 255, 0.14), transparent 32%),
    radial-gradient(circle at 50% 72%, rgba(6, 182, 212, 0.05), transparent 34%),
    linear-gradient(180deg, #0d1017 0%, #0b0d12 100%);
}

body.dark-mode .contact-hero::before {
  background: none;
}

body.dark-mode .contact-title {
  color: var(--text);
}

body.dark-mode .contact-subtitle {
  color: var(--text-muted);
}

body.dark-mode .contact-content {
  background-color: var(--bg);
}

body.dark-mode .methods-title,
body.dark-mode .cta-text {
  color: var(--text);
}

body.dark-mode .gif-caption,
body.dark-mode .option-text {
  color: var(--text-muted);
}

body.dark-mode .contact-option,
body.dark-mode .contact-cta {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

body.dark-mode .contact-option:hover {
  background: var(--bg-card-hover);
  border-color: rgba(124, 108, 255, 0.22);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.34);
}

body.dark-mode .contact-cta {
  border-left: 4px solid var(--accent);
}

body.dark-mode .option-title,
body.dark-mode .contact-link {
  color: var(--accent-hover);
}

body.dark-mode .contact-link:hover {
  color: var(--text);
}

body.dark-mode .social-icon {
  background: var(--accent);
  box-shadow: 0 12px 28px rgba(124, 108, 255, 0.18);
}

body.dark-mode .social-icon:hover {
  background: var(--accent-hover);
  box-shadow: 0 14px 32px rgba(124, 108, 255, 0.24);
}

body.dark-mode .contact-link:focus-visible,
body.dark-mode .back-link:focus-visible,
body.dark-mode .social-icon:focus-visible {
  outline-color: rgba(124, 108, 255, 0.42);
}

body.dark-mode .contact-footer {
  background:
    radial-gradient(circle at 50% 20%, rgba(124, 108, 255, 0.12), transparent 36%),
    #0a0c11;
  border-top: 1px solid var(--border);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease-out forwards;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .contact-hero {
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 2);
  }

  .contact-content {
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 2);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--spacing-unit) * 4);
  }

  .contact-methods {
    gap: calc(var(--spacing-unit) * 3);
  }

  .gif-image {
    max-width: 100%;
  }
}

@media (max-width: 576px) {
  .contact-title {
    font-size: 2rem;
  }

  .contact-subtitle {
    font-size: 1rem;
  }

  .methods-title {
    font-size: 1.5rem;
  }

  .contact-option {
    padding: calc(var(--spacing-unit) * 2);
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .back-link {
    display: block;
  }
}