/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
  /* Colors - Dark Theme (default) */
  --color-bg: #0a0a0a;
  --color-bg-elevated: #111111;
  --color-bg-terminal: #0d1117;
  --color-neon: #00ff41;
  --color-neon-dim: #00cc33;
  --color-neon-glow: rgba(0, 255, 65, 0.4);
  --color-text: #b3b3b3;
  --color-text-dim: #666666;
  --color-border: #1a1a1a;
  --color-border-bright: #333333;
  --color-red: #ff5f56;
  --color-yellow: #ffbd2e;
  --color-green: #27c93f;
  --color-blue: #58a6ff;
  --color-purple: #bd93f9;
  --color-string: #f1fa8c;
  --color-keyword: #ff79c6;

  /* Nav background */
  --nav-bg: rgba(10, 10, 10, 0.9);
  --terminal-shadow: rgba(0, 0, 0, 0.5);

  /* Typography */
  --font-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width: 900px;
  --nav-height: 60px;

  /* Effects */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-mono);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===================================
   CRT / Scanline Effect
   =================================== */
.crt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1000;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.03) 0px,
    rgba(0, 0, 0, 0.03) 1px,
    transparent 1px,
    transparent 2px
  );
}

.crt-overlay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    rgba(0, 0, 0, 0.2) 100%
  );
}

/* ===================================
   Navigation
   =================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav__list {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav__link {
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: var(--font-size-sm);
  padding: var(--space-sm) var(--space-md);
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link:focus {
  color: var(--color-neon);
  text-shadow: 0 0 10px var(--color-neon-glow);
  outline: none;
}

.nav__link:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 4px;
}

.nav__link--active {
  color: var(--color-neon);
  text-shadow: 0 0 10px var(--color-neon-glow);
}

/* ===================================
   Section Base
   =================================== */
.section {
  min-height: 100vh;
  padding: var(--space-4xl) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section__container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__title {
  color: var(--color-neon);
  font-size: var(--font-size-xl);
  font-weight: 500;
  margin-bottom: var(--space-2xl);
  text-shadow: 0 0 20px var(--color-neon-glow);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  flex-direction: column;
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  position: relative;
}

.hero__wrapper {
  display: flex;
  align-items: stretch;
  gap: var(--space-3xl);
  max-width: var(--max-width);
  width: 100%;
}

.hero__content {
  flex: 1;
  max-width: 600px;
}

.hero__terminal-header {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot--red { background: var(--color-red); }
.terminal-dot--yellow { background: var(--color-yellow); }
.terminal-dot--green { background: var(--color-green); }

.hero__prefix {
  color: var(--color-text-dim);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero__title-text {
  color: var(--color-neon);
  text-shadow:
    0 0 10px var(--color-neon-glow),
    0 0 20px var(--color-neon-glow),
    0 0 40px var(--color-neon-glow);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
    text-shadow:
      0 0 10px var(--color-neon-glow),
      0 0 20px var(--color-neon-glow),
      0 0 40px var(--color-neon-glow);
  }
  to {
    text-shadow:
      0 0 15px var(--color-neon-glow),
      0 0 30px var(--color-neon-glow),
      0 0 60px var(--color-neon-glow);
  }
}

.cursor {
  color: var(--color-neon);
  animation: blink 1s step-end infinite;
}

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

.hero__typewriter {
  color: var(--color-neon);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
  font-weight: 400;
  min-height: 1.5em;
}

.typewriter__text {
  color: var(--color-neon);
}

.typewriter__cursor {
  color: var(--color-neon);
  animation: blink 1s step-end infinite;
}

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

.hero__description {
  color: var(--color-text-dim);
  font-size: var(--font-size-base);
  max-width: 600px;
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.hero__link {
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.hero__link:hover,
.hero__link:focus {
  color: var(--color-neon);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-arrow {
  color: var(--color-text-dim);
  font-size: var(--font-size-xl);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.btn:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 4px;
}

.btn--primary {
  background: transparent;
  color: var(--color-neon);
  border: 1px solid var(--color-neon);
  padding: var(--space-md) var(--space-xl);
  position: relative;
  overflow: hidden;
}

.btn--primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-neon);
  transition: left var(--transition-base);
  z-index: -1;
}

.btn--primary:hover::before {
  left: 0;
}

.btn--primary:hover {
  color: var(--color-bg);
  box-shadow: 0 0 20px var(--color-neon-glow);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-xl);
  transition: all var(--transition-base);
}

.btn--secondary:hover {
  color: var(--color-neon);
  border-color: var(--color-neon);
  box-shadow: 0 0 15px var(--color-neon-glow);
}

.btn--retro {
  background: var(--color-bg-elevated);
  color: var(--color-neon);
  border: 2px solid var(--color-border-bright);
  padding: var(--space-sm) var(--space-lg);
  box-shadow:
    inset 1px 1px 0 var(--color-border-bright),
    inset -1px -1px 0 var(--color-bg),
    3px 3px 0 var(--color-bg);
  transition: all var(--transition-fast);
}

.btn--retro:hover {
  background: var(--color-neon);
  color: var(--color-bg);
  box-shadow:
    inset 1px 1px 0 var(--color-neon-dim),
    inset -1px -1px 0 var(--color-bg),
    3px 3px 0 var(--color-bg),
    0 0 20px var(--color-neon-glow);
}

.btn--retro:active {
  transform: translate(2px, 2px);
  box-shadow:
    inset 1px 1px 0 var(--color-bg),
    inset -1px -1px 0 var(--color-border-bright),
    1px 1px 0 var(--color-bg);
}

/* ===================================
   Terminal Window
   =================================== */
.terminal-window {
  background: var(--color-bg-terminal);
  border: 1px solid var(--color-border-bright);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 60px var(--terminal-shadow);
}

.terminal-window--small {
  font-size: var(--font-size-xs);
}

.terminal-window__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}

.terminal-window__title {
  margin-left: auto;
  color: var(--color-text-dim);
  font-size: var(--font-size-xs);
}

.terminal-window__body {
  padding: var(--space-xl);
}

/* ===================================
   Code Block Styling
   =================================== */
.code-block {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  white-space: pre;
  overflow-x: auto;
}

.code-block--small {
  font-size: var(--font-size-xs);
  line-height: 1.6;
}

.code-comment { color: var(--color-text-dim); }
.code-keyword { color: var(--color-keyword); }
.code-variable { color: var(--color-blue); }
.code-property { color: var(--color-purple); }
.code-string { color: var(--color-string); }
.code-boolean { color: var(--color-neon); }

/* ===================================
   About Section
   =================================== */
.about {
  background: linear-gradient(
    180deg,
    var(--color-bg) 0%,
    rgba(0, 255, 65, 0.02) 50%,
    var(--color-bg) 100%
  );
}

/* ===================================
   Project Section
   =================================== */
.project .section__container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.project-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-bright);
  border-radius: 8px;
  padding: var(--space-2xl);
  position: relative;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-neon),
    transparent
  );
}

.project-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.project-card__badge {
  background: var(--color-neon);
  color: var(--color-bg);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  letter-spacing: 0.1em;
}

.project-card__title {
  color: var(--color-text);
  font-size: var(--font-size-xl);
  font-weight: 500;
}

.project-card__description {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.tech-tag {
  background: transparent;
  color: var(--color-neon-dim);
  border: 1px solid var(--color-border-bright);
  font-size: var(--font-size-xs);
  padding: var(--space-xs) var(--space-sm);
}

.tech-tag--highlight {
  background: var(--color-neon);
  color: var(--color-bg);
  border-color: var(--color-neon);
  font-weight: 600;
}

.project-card__code {
  margin-bottom: var(--space-xl);
}

.project-card__links {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ===================================
   Project Filters
   =================================== */
.filters {
  margin-bottom: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

.filters__label {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
  margin-right: var(--space-sm);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: var(--space-xs) var(--space-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--color-neon);
  border-color: var(--color-neon-dim);
}

.filter-btn--active {
  color: var(--color-neon);
  border-color: var(--color-neon);
  box-shadow: 0 0 10px var(--color-neon-glow);
}

.projects-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.project-card {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.project-card.hidden {
  display: none;
}

/* ===================================
   Tabs
   =================================== */
.tabs {
  width: 100%;
}

.tabs__nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs__nav::-webkit-scrollbar {
  display: none;
}

.tabs__btn {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: var(--color-bg-elevated);
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  border-bottom: none;
  padding: var(--space-sm) var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  top: 1px;
}

.tabs__btn:hover {
  color: var(--color-neon);
  background: var(--color-bg-terminal);
}

.tabs__btn--active {
  color: var(--color-neon);
  background: var(--color-bg);
  border-color: var(--color-neon);
  border-bottom: 1px solid var(--color-bg);
}

.tabs__content {
  display: none;
  padding-top: var(--space-xl);
  animation: tabFadeIn 0.3s ease;
}

.tabs__content--active {
  display: block;
}

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

/* Mobile tabs */
@media (max-width: 480px) {
  .tabs__btn {
    font-size: var(--font-size-xs);
    padding: var(--space-xs) var(--space-md);
  }
}

/* ===================================
   Footer
   =================================== */
.footer {
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer__text {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
  line-height: 2;
}

.footer__version {
  font-size: var(--font-size-xs);
  color: var(--color-text-dim);
  opacity: 0.6;
}

/* ===================================
   Dialog
   =================================== */
.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.dialog-overlay.active {
  display: flex;
}

.dialog {
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-neon);
  box-shadow: 0 0 30px var(--color-neon-glow);
  max-width: 480px;
  width: 90%;
  animation: dialogPop 0.3s ease-out;
}

@keyframes dialogPop {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.dialog__header {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-terminal);
  border-bottom: 1px solid var(--color-border);
}

.dialog__body {
  padding: var(--space-xl);
  text-align: center;
}

.dialog__pixel-face {
  color: var(--color-neon);
  font-size: 10px;
  line-height: 1;
  margin-bottom: var(--space-lg);
}

.dialog__pixel-face pre {
  font-family: var(--font-mono);
  margin: 0;
}

.dialog__text {
  color: var(--color-text);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xl);
}

.dialog__btn {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: transparent;
  color: var(--color-neon);
  border: 1px solid var(--color-neon);
  padding: var(--space-sm) var(--space-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dialog__btn:hover {
  background: var(--color-neon);
  color: var(--color-bg);
  box-shadow: 0 0 15px var(--color-neon-glow);
}

/* Terminal buttons clickable */
button.terminal-dot {
  cursor: pointer;
  border: none;
  padding: 0;
  transition: transform var(--transition-fast);
}

button.terminal-dot:hover {
  transform: scale(1.3);
}

/* Minimized terminal window */
.terminal-window.minimized .terminal-window__body {
  display: none;
}

.terminal-window.minimized {
  width: auto;
  display: inline-block;
}

/* Minimized hero content */
.hero__content.minimized > *:not(.hero__terminal-header) {
  display: none;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
  :root {
    --font-size-base: 14px;
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
  }

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

  .section {
    padding: var(--space-3xl) var(--space-md);
  }

  .hero__wrapper {
    flex-direction: column;
  }

  .hero__content {
    max-width: 100%;
  }

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

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .terminal-window__body {
    padding: var(--space-md);
  }

  .code-block {
    font-size: var(--font-size-xs);
  }

  .project-card {
    padding: var(--space-lg);
  }

  .project-card__tech {
    gap: var(--space-xs);
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: var(--font-size-2xl);
  }

  .hero__typewriter {
    font-size: var(--font-size-lg);
  }

  .section__title {
    font-size: var(--font-size-lg);
  }
}

/* ===================================
   Accessibility
   =================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .section {
    opacity: 1;
    transform: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --color-neon: #00ff00;
    --color-text: #ffffff;
    --color-border-bright: #ffffff;
  }
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 4px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-neon);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  z-index: 200;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* Selection styling */
::selection {
  background: var(--color-neon);
  color: var(--color-bg);
}

/* ===================================
   Light Theme
   =================================== */
[data-theme="light"] {
  --color-bg: #f5f5f5;
  --color-bg-elevated: #ffffff;
  --color-bg-terminal: #fafafa;
  --color-neon: #8b00ff;
  --color-neon-dim: #7000cc;
  --color-neon-glow: rgba(139, 0, 255, 0.3);
  --color-text: #333333;
  --color-text-dim: #666666;
  --color-border: #e0e0e0;
  --color-border-bright: #cccccc;
  --color-blue: #0066cc;
  --color-purple: #8b5cf6;
  --color-string: #b8860b;
  --color-keyword: #d63384;
  --nav-bg: rgba(245, 245, 245, 0.9);
  --terminal-shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .crt-overlay {
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.01) 0px,
    rgba(0, 0, 0, 0.01) 1px,
    transparent 1px,
    transparent 2px
  );
}

[data-theme="light"] .crt-overlay::after {
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    rgba(0, 0, 0, 0.05) 100%
  );
}

/* ===================================
   Theme Toggle Button
   =================================== */

/* Hide nav toggle on desktop */
.nav .theme-toggle {
  display: none;
}

/* Desktop: fixed position in corner */
.theme-toggle--fixed {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 101;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: text-shadow var(--transition-fast);
}

.theme-toggle--fixed:hover {
  text-shadow: 0 0 12px var(--color-neon-glow);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 4px;
}

/* Simple text icon */
.theme-toggle__label {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--color-neon);
  line-height: 1;
  display: inline-block;
  transition: transform 0.5s ease;
  transform-style: preserve-3d;
}

/* Dark theme shows moon */
.theme-toggle__label::after {
  content: '☽';
  display: inline-block;
}

/* Light theme shows sun */
[data-theme="light"] .theme-toggle__label::after {
  content: '☀';
}

/* Flip animation */
.theme-toggle__label.flipping {
  animation: iconFlip 0.5s ease-in-out;
}

@keyframes iconFlip {
  0% {
    transform: rotateY(0deg);
  }
  50% {
    transform: rotateY(90deg);
  }
  100% {
    transform: rotateY(0deg);
  }
}

/* ===================================
   Snow Effect
   =================================== */
#snow-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
}

/* Hide snow on mobile */
@media (max-width: 768px) {
  #snow-canvas {
    display: none !important;
  }
}

/* ===================================
   Christmas Terminal Toggle
   =================================== */
.christmas-terminal {
  flex-shrink: 0;
  width: 380px;
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
  font-size: 14px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
}

/* Terminal header with dots */
.christmas-terminal__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}

.christmas-terminal__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.christmas-terminal__dot--red {
  background: #ff5f56;
}

.christmas-terminal__dot--yellow {
  background: #ffbd2e;
}

.christmas-terminal__dot--green {
  background: #27c93f;
}

.christmas-terminal__title {
  flex: 1;
  text-align: center;
  color: var(--color-text-dim);
  font-size: 11px;
  margin-right: 30px; /* compensate for dots */
}

/* Terminal body */
.christmas-terminal__body {
  flex: 1;
  display: flex;
  align-items: flex-start;
  background: var(--color-bg-terminal);
  padding: var(--space-lg);
}

.christmas-terminal__toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  width: 100%;
  text-align: left;
}

.christmas-terminal__toggle:hover {
  opacity: 0.8;
}

.christmas-terminal__prompt {
  color: var(--color-accent);
  font-weight: 600;
}

.christmas-terminal__cmd {
  color: var(--color-text);
}

.christmas-terminal__eq {
  color: var(--color-text-dim);
}

.christmas-terminal__value {
  color: var(--color-keyword);
  position: relative;
  font-weight: 500;
}

.christmas-terminal__value--false {
  color: #ff6b6b;
}

/* Blinking cursor after value */
.christmas-terminal__value::after {
  content: '_';
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}

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

/* Hide on mobile */
@media (max-width: 768px) {
  .christmas-terminal {
    display: none;
  }
}

/* ===================================
   Language Toggle
   =================================== */
.lang-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border-bright);
  border-radius: 4px;
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  transition: all var(--transition-fast);
}

.lang-toggle:hover {
  border-color: var(--color-neon);
  box-shadow: 0 0 8px var(--color-neon-glow);
}

.lang-toggle:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 2px;
}

.lang-toggle__label {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-dim);
  transition: color var(--transition-fast);
  letter-spacing: 0.5px;
}

.lang-toggle:hover .lang-toggle__label {
  color: var(--color-neon);
}

/* Mobile: in navigation */
@media (max-width: 768px) {
  /* Hide fixed button on mobile */
  .theme-toggle--fixed {
    display: none;
  }

  /* Show nav toggle on mobile */
  .nav .theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
  }

  .nav .theme-toggle__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-dim);
    transition: color var(--transition-fast);
  }

  .nav .theme-toggle:hover .theme-toggle__label {
    color: var(--color-neon);
  }

  .lang-toggle {
    padding: var(--space-xs) var(--space-sm);
  }

  .lang-toggle__label {
    font-size: var(--font-size-xs);
  }
}

/* ===================================
   Theme Transition Animation (View Transitions API)
   =================================== */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}

::view-transition-old(root) {
  z-index: 1;
}

::view-transition-new(root) {
  z-index: 9999;
  animation: theme-reveal 2s ease-out forwards;
}

@keyframes theme-reveal {
  from {
    clip-path: circle(0% at var(--theme-x, 95%) var(--theme-y, 5%));
  }
  to {
    clip-path: circle(150% at var(--theme-x, 95%) var(--theme-y, 5%));
  }
}

/* Fallback for browsers without View Transitions */
.theme-transition-fallback {
  display: none;
}

/* ===================================
   Language Glitch Animation
   =================================== */
.glitch {
  animation: glitch 0.8s ease-in-out;
}

@keyframes glitch {
  0% {
    opacity: 1;
    transform: translate(0);
    filter: blur(0);
  }
  10% {
    opacity: 0.8;
    transform: translate(-2px, 1px);
    filter: blur(1px);
    text-shadow: 2px 0 var(--color-neon), -2px 0 var(--color-keyword);
  }
  20% {
    opacity: 0.6;
    transform: translate(2px, -1px);
    filter: blur(0);
    text-shadow: -2px 0 var(--color-neon), 2px 0 var(--color-string);
  }
  30% {
    opacity: 0.4;
    transform: translate(-1px, 2px);
    filter: blur(2px);
    text-shadow: 1px 0 var(--color-keyword), -1px 0 var(--color-neon);
  }
  40% {
    opacity: 0;
    transform: translate(1px, -2px);
    filter: blur(0);
  }
  50% {
    opacity: 0;
    transform: translate(0);
  }
  60% {
    opacity: 0.4;
    transform: translate(2px, 1px);
    filter: blur(2px);
    text-shadow: -2px 0 var(--color-string), 2px 0 var(--color-neon);
  }
  70% {
    opacity: 0.6;
    transform: translate(-2px, -1px);
    filter: blur(0);
    text-shadow: 2px 0 var(--color-neon), -2px 0 var(--color-keyword);
  }
  80% {
    opacity: 0.8;
    transform: translate(1px, 2px);
    filter: blur(1px);
    text-shadow: -1px 0 var(--color-neon), 1px 0 var(--color-string);
  }
  90% {
    opacity: 0.9;
    transform: translate(-1px, -1px);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: translate(0);
    filter: blur(0);
    text-shadow: none;
  }
}

/* Glitch on terminal windows */
.terminal-window.glitch {
  animation: glitchWindow 0.8s ease-in-out;
}

@keyframes glitchWindow {
  0% {
    opacity: 1;
    transform: translate(0);
  }
  15% {
    opacity: 0.7;
    transform: translate(-3px, 2px) skewX(-2deg);
    box-shadow: 3px 0 var(--color-neon), -3px 0 var(--color-keyword);
  }
  30% {
    opacity: 0.5;
    transform: translate(3px, -2px) skewX(2deg);
    box-shadow: -3px 0 var(--color-string), 3px 0 var(--color-neon);
  }
  45% {
    opacity: 0;
    transform: translate(0) skewX(0);
  }
  55% {
    opacity: 0;
  }
  70% {
    opacity: 0.5;
    transform: translate(-2px, 1px) skewX(1deg);
    box-shadow: 2px 0 var(--color-neon), -2px 0 var(--color-keyword);
  }
  85% {
    opacity: 0.8;
    transform: translate(2px, -1px) skewX(-1deg);
  }
  100% {
    opacity: 1;
    transform: translate(0) skewX(0);
    box-shadow: none;
  }
}

/* ===================================
   Social Links
   =================================== */
.social {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.social--footer {
  justify-content: center;
  margin-top: 0;
  margin-bottom: var(--space-lg);
}

.social__link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  transition: color var(--transition-fast), transform var(--transition-fast), filter var(--transition-fast);
}

.social__link:hover {
  color: var(--color-neon);
  transform: translateY(-2px);
  filter: drop-shadow(0 0 8px var(--color-neon-glow));
}

.social__link:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 4px;
}

.social__icon {
  width: 24px;
  height: 24px;
}

.social--footer .social__icon {
  width: 20px;
  height: 20px;
}