/* ============================================
   AstroTech Tower Run - Stylesheet
   ============================================ */

/* CSS Variables - AstroTech Design System */
:root {
  /* Colors */
  --bg-primary: #0a0f1a;
  --bg-secondary: #0f1520;
  --bg-surface: rgba(255, 255, 255, 0.05);
  --bg-surface-hover: rgba(255, 255, 255, 0.08);

  --accent-primary: #33afff;
  --accent-secondary: #6b4cff;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;

  --text-primary: #f2f2f2;
  --text-secondary: #a0aec0;
  --text-muted: #6b7280;

  /* Glow effects */
  --glow-primary: 0 0 20px rgba(51, 175, 255, 0.4);
  --glow-secondary: 0 0 20px rgba(107, 76, 255, 0.4);
  --glow-success: 0 0 15px rgba(16, 185, 129, 0.4);
  --glow-danger: 0 0 15px rgba(239, 68, 68, 0.4);

  /* Typography */
  --font-display: "Orbitron", "Segoe UI", sans-serif;
  --font-body: "Roboto", "Segoe UI", sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Borders */
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-color: rgba(51, 175, 255, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-normal: 0ms;
    --transition-slow: 0ms;
  }
}

.reduce-motion {
  --transition-fast: 0ms !important;
  --transition-normal: 0ms !important;
  --transition-slow: 0ms !important;
}

.reduce-motion * {
  animation-duration: 0ms !important;
  transition-duration: 0ms !important;
}

/* ============================================
   Base Styles
   ============================================ */

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

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}

/* Scanlines effect */
.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02) 0,
    rgba(255, 255, 255, 0.02) 1px,
    transparent 2px,
    transparent 4px
  );
  opacity: 0.15;
  z-index: 1000;
}

/* Animated background */
.bg-animation {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(
      ellipse at 20% 80%,
      rgba(107, 76, 255, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 80% 20%,
      rgba(51, 175, 255, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 50% 50%,
      rgba(51, 175, 255, 0.05) 0%,
      transparent 60%
    );
  animation: bgPulse 8s ease-in-out infinite;
  z-index: -1;
}

@keyframes bgPulse {
  0%,
  100% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
}

/* Stars */
.stars {
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 20px 30px, white, transparent),
    radial-gradient(
      2px 2px at 40px 70px,
      rgba(255, 255, 255, 0.8),
      transparent
    ),
    radial-gradient(1px 1px at 90px 40px, white, transparent),
    radial-gradient(
      2px 2px at 130px 80px,
      rgba(255, 255, 255, 0.6),
      transparent
    ),
    radial-gradient(1px 1px at 160px 120px, white, transparent);
  background-size: 200px 200px;
  animation: twinkle 4s ease-in-out infinite;
  z-index: -1;
}

@keyframes twinkle {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

.reduce-motion .scanlines {
  display: none;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* ============================================
   Screen Management
   ============================================ */

.screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-normal),
    visibility var(--transition-normal);
  z-index: 10;
}

.screen.active {
  opacity: 1;
  visibility: visible;
}

.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 15, 26, 0.9);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-normal),
    visibility var(--transition-normal);
  z-index: 100;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   Typography
   ============================================ */

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 2px;
}

.game-title {
  font-size: clamp(2.5rem, 8vw, 4rem);
  color: var(--text-primary);
  text-shadow: var(--glow-primary);
  margin-bottom: var(--space-sm);
}

.game-title .accent {
  color: var(--accent-primary);
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.panel-title {
  font-size: 1.8rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 200px;
  min-height: 56px;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: var(--text-primary);
  border-color: var(--accent-primary);
  box-shadow: var(--glow-primary);
}

.btn-primary:hover {
  box-shadow:
    var(--glow-primary),
    0 8px 25px rgba(51, 175, 255, 0.3);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-danger);
  border-color: var(--accent-danger);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.3);
  box-shadow: var(--glow-danger);
}

.btn-large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1.2rem;
  min-height: 64px;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

.btn-icon-only {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon-only:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
}

.btn-icon-only svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   Toggle Switch
   ============================================ */

.toggle {
  position: relative;
  display: inline-block;
  width: 56px;
  height: 32px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: 32px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
  background: rgba(51, 175, 255, 0.2);
  border-color: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
  left: calc(100% - 24px);
  background: var(--accent-primary);
  box-shadow: var(--glow-primary);
}

.toggle input:focus-visible + .toggle-slider {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* ============================================
   Main Menu Screen
   ============================================ */

.menu-container {
  text-align: center;
  padding: var(--space-2xl);
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin: var(--space-2xl) auto;
  max-width: 300px;
}

.best-score-display {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
}

.best-score-display .label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.best-score-display .value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
}

/* ============================================
   Panel Container (How to Play, Settings)
   ============================================ */

.panel-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.overlay-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  max-width: 400px;
  width: 90%;
  text-align: center;
}

/* How to Play content */
.howto-content {
  text-align: left;
  margin-bottom: var(--space-xl);
}

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

.howto-section h3 {
  font-size: 1.1rem;
  color: var(--accent-primary);
  margin-bottom: var(--space-sm);
}

.howto-section p,
.howto-section li {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.howto-section ul {
  list-style: none;
  padding-left: var(--space-md);
}

.howto-section li {
  position: relative;
  margin-bottom: var(--space-xs);
  padding-left: var(--space-md);
}

.howto-section li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent-secondary);
}

/* Settings */
.settings-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  background: var(--bg-surface);
  border-radius: var(--border-radius);
}

.setting-label {
  font-size: 1rem;
  color: var(--text-primary);
}

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

.pause-settings {
  margin-bottom: var(--space-lg);
}

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

/* ============================================
   Tower Map / Choice Screen
   ============================================ */

.tower-container {
  width: 100%;
  height: 100%;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
}

.tower-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.tower-title {
  font-size: 1.5rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
}

.run-stats {
  display: flex;
  gap: var(--space-xl);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--accent-primary);
}

.tower-map {
  flex: 1;
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-md);
  overflow-y: auto;
  padding: var(--space-md);
}

.tier-row {
  display: grid;
  grid-template-columns: 80px repeat(3, 1fr);
  gap: var(--space-md);
  align-items: center;
  opacity: 0.4;
  transition: opacity var(--transition-normal);
}

.tier-row.active {
  opacity: 1;
}

.tier-row.completed {
  opacity: 0.6;
}

.tier-indicator {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-muted);
  text-align: center;
}

.tier-row.active .tier-indicator {
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
}

.tier-row.completed .tier-indicator {
  color: var(--accent-success);
}

/* Floor Choice Cards */
.floor-card {
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  cursor: default;
  transition: all var(--transition-fast);
  opacity: 0.5;
  min-height: 140px;
}

.tier-row.active .floor-card {
  cursor: pointer;
  opacity: 1;
}

.tier-row.active .floor-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--glow-primary);
}

.tier-row.completed .floor-card.selected {
  border-color: var(--accent-success);
  background: rgba(16, 185, 129, 0.1);
}

.floor-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-sm);
}

.floor-card-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(51, 175, 255, 0.2);
  border-radius: 8px;
  font-size: 1.2rem;
}

.floor-card-risk {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
}

.risk-safe {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-success);
}

.risk-moderate {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-warning);
}

.risk-dangerous {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-danger);
}

.floor-card-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.floor-card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.floor-card-reward {
  font-size: 0.75rem;
  color: var(--accent-success);
}

/* ============================================
   Game Screen & HUD
   ============================================ */

.game-container {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.game-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(
    180deg,
    rgba(10, 15, 26, 0.95) 0%,
    transparent 100%
  );
  z-index: 10;
}

.hud-left,
.hud-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.hud-item {
  display: flex;
  flex-direction: column;
}

.hud-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hud-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--text-primary);
}

.hud-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.timer-display {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--text-primary);
}

.timer-display.warning {
  color: var(--accent-warning);
  animation: pulse 0.5s ease-in-out infinite;
}

.timer-display.critical {
  color: var(--accent-danger);
  animation: pulse 0.25s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.reduce-motion .timer-display.warning,
.reduce-motion .timer-display.critical {
  animation: none;
}

.timer-icon {
  width: 28px;
  height: 28px;
}

#game-canvas {
  flex: 1;
  width: 100%;
  display: block;
  background: var(--bg-primary);
}

/* Floor Intro Overlay */
.floor-intro {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(10, 15, 26, 0.9);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal);
}

.floor-intro.active {
  opacity: 1;
  visibility: visible;
}

.floor-name {
  font-size: 2.5rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
  margin-bottom: var(--space-sm);
}

.floor-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.floor-countdown {
  font-family: var(--font-display);
  font-size: 6rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
  animation: countdownPulse 1s ease-in-out infinite;
}

@keyframes countdownPulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.reduce-motion .floor-countdown {
  animation: none;
}

.fps-counter {
  position: absolute;
  top: 70px;
  right: var(--space-lg);
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.fps-counter.visible {
  opacity: 1;
}

/* ============================================
   Result Screen
   ============================================ */

.result-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  max-width: 450px;
  width: 90%;
  text-align: center;
}

.result-header {
  margin-bottom: var(--space-xl);
}

.result-title {
  font-size: 1.8rem;
  color: var(--accent-success);
  margin-bottom: var(--space-sm);
}

.result-title.failed {
  color: var(--accent-danger);
}

.result-status {
  font-size: 3rem;
}

.result-breakdown {
  margin-bottom: var(--space-xl);
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.breakdown-value {
  font-family: var(--font-display);
  color: var(--text-primary);
}

.breakdown-total {
  display: flex;
  justify-content: space-between;
  padding: var(--space-md) 0;
  margin-top: var(--space-sm);
  border-top: 2px solid var(--accent-primary);
}

.breakdown-total .breakdown-label {
  color: var(--text-primary);
  font-weight: 600;
}

.breakdown-total .breakdown-value {
  font-size: 1.4rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
}

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

.reward-badge {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--accent-success);
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  color: var(--accent-success);
}

/* ============================================
   Summary Screen
   ============================================ */

.summary-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  max-width: 500px;
  width: 90%;
  text-align: center;
}

.summary-container.gameover {
  border-color: var(--accent-danger);
}

.summary-title {
  font-size: 2.2rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
  margin-bottom: var(--space-sm);
}

.gameover .summary-title {
  color: var(--accent-danger);
  text-shadow: var(--glow-danger);
}

.summary-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.summary-score {
  margin-bottom: var(--space-xl);
}

.final-score {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.final-score .label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.final-score .value {
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: var(--accent-primary);
  text-shadow: var(--glow-primary);
}

.best-comparison {
  margin-top: var(--space-md);
}

.new-best {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--accent-warning);
  text-shadow: 0 0 15px rgba(245, 158, 11, 0.5);
  animation: newBestPulse 1s ease-in-out infinite;
}

@keyframes newBestPulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

.reduce-motion .new-best {
  animation: none;
}

.best-comparison.hidden {
  display: none;
}

.summary-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.summary-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--bg-surface);
  border-radius: var(--border-radius);
}

.summary-stat .label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.summary-stat .value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--text-primary);
}

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

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 768px) {
  .tower-header {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .run-stats {
    justify-content: center;
  }

  .tier-row {
    grid-template-columns: 60px repeat(3, 1fr);
    gap: var(--space-sm);
  }

  .floor-card {
    padding: var(--space-sm);
    min-height: 120px;
  }

  .floor-card-name {
    font-size: 0.85rem;
  }

  .floor-card-desc {
    font-size: 0.7rem;
  }

  .summary-stats {
    grid-template-columns: 1fr;
  }

  .game-hud {
    padding: var(--space-sm) var(--space-md);
  }

  .timer-display {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .tier-row {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .tier-indicator {
    padding: var(--space-sm);
    background: var(--bg-surface);
    border-radius: var(--border-radius);
  }

  .btn {
    min-width: 100%;
  }
}