@import url("https://fonts.googleapis.com/css2?family=BBH+Bogle&family=Bebas+Neue&family=Lato:ital,wght@0,100;0,300;0,400;0,700;0,900;1,100;1,300;1,400;1,700;1,900&family=Montserrat:ital,wght@0,100..900;1,100..900&family=Mozilla+Headline:wght@200..700&family=Nunito+Sans:ital,opsz,wght@0,6..12,200..1000;1,6..12,200..1000&family=Roboto:ital,wght@0,100..900;1,100..900&display=swap");

:root {
  --bg-primary: #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f5f5f5;
  --bg-about: #e7e7e7;
  --text-primary: #1a1a1a;
  --text-secondary: #737373;
  --text-tertiary: #a3a3a3;
  --border-color: #e5e5e5;
  --border-hover: #d4d4d4;
  --accent-color: #ff3131;
  --accent-hover: #e02424;
  --accent-light: #fee2e2;
  --card-bg: #ffffff;
  --success-color: #10b981;
  --success-bg: #d1fae5;
  --success-text: #065f46;
  --error-color: #ff3131;
  --error-bg: #fee2e2;
  --error-text: #991b1b;
  --info-bg: #eff6ff;
  --info-color: #3b82f6;
}

[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #171717;
  --bg-tertiary: #262626;
  --bg-about: #181818;
  --text-primary: #fafafa;
  --text-secondary: #d4d4d4;
  --text-tertiary: #a3a3a3;
  --border-color: #404040;
  --border-hover: #525252;
  --accent-color: #ff4545;
  --accent-hover: #ff6b6b;
  --accent-light: #2d1f1f;
  --card-bg: #171717;
  --success-color: #34d399;
  --success-bg: #064e3b;
  --success-text: #6ee7b7;
  --error-color: #ff4545;
  --error-bg: #4a1818;
  --error-text: #fca5a5;
  --info-bg: #1e3a8a;
  --info-color: #60a5fa;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Lato, sans-serif;
}

::selection {
  background: var(--accent-color);
  color: #ffffff;
}

::-moz-selection {
  background: var(--accent-color);
  color: #ffffff;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2 {
  font-family: Mozilla Headline, sans-serifs;
}

nav {
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--border-color);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 9999;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 10000;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  position: relative;
  padding: 0.5rem 0;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.theme-toggle {
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: 50px;
  padding: 10px 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  border-color: var(--accent-color);
  background: var(--accent-light);
  transform: scale(1.05);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

[data-theme="light"] .theme-toggle .sun-icon {
  transform: rotate(0deg);
  opacity: 1;
}

[data-theme="light"] .theme-toggle .moon-icon {
  transform: rotate(90deg) scale(0);
  opacity: 0;
  position: absolute;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  transform: rotate(-90deg) scale(0);
  opacity: 0;
  position: absolute;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  transform: rotate(0deg);
  opacity: 1;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 2px solid var(--border-color);
  margin-top: 4rem;
  padding: 4rem 0 1.5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-section.about p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  text-align: justify;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  border: 2px solid var(--border-color);
}

.social-links a:hover {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

.footer-section.links ul {
  list-style: none;
}

.footer-section.links li {
  margin-bottom: 0.75rem;
}

.footer-section.links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-section.links a:hover {
  color: var(--accent-color);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.contact-item svg {
  color: var(--accent-color);
}

.contact-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-item a:hover {
  color: var(--accent-color);
}

.dev-info {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.dev-info p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.dev-info strong {
  color: var(--text-primary);
  font-weight: 600;
}

.dev-description {
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

.portfolio-link {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

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

footer {
  text-align: left;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 3rem;
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-container {
    padding: 0 1rem;
    flex-wrap: wrap;
  }

  .nav-links {
    flex-direction: column;
    gap: 0;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
    padding: 0;
    background: var(--bg-secondary);
  }

  .nav-links.active {
    max-height: 500px;
    opacity: 1;
    padding: 1rem 0;
  }

  .nav-links li {
    margin: 0;
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 14px 20px;
    width: 100%;
    text-align: left;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
  }

  .nav-links a:hover {
    background: var(--bg-tertiary);
    border-left-color: var(--accent-color);
    padding-left: 28px;
  }

  .theme-toggle {
    margin: 0.5rem 20px;
    width: calc(100% - 40px);
    justify-content: center;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer {
    padding: 3rem 0 1.5rem;
  }
}

@media (max-width: 480px) {
  .footer {
    padding: 2.5rem 0 1rem;
    margin-top: 3rem;
  }

  .footer-container {
    padding: 0 1rem;
  }

  .footer-content {
    gap: 2rem;
  }

  .footer-section h3 {
    font-size: 1.1rem;
  }

  .social-links a {
    width: 36px;
    height: 36px;
  }

  .footer-bottom p {
    font-size: 0.85rem;
  }
}

/* SPA Page Section Styles */
.page-section {
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.page-section.active {
  display: block;
  opacity: 1;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Back to Home Link */
.back-to-home {
  display: inline-block;
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: background 0.2s;
}

.back-to-home:hover {
  background: var(--accent-light);
}