/* ============================================================
   THE URINAL TEST — style.css
   Top-down bathroom urinal etiquette game
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Anton&family=Oswald:wght@400;600;700&family=Share+Tech+Mono&display=swap');

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  --bg-dark:        #0f1117;
  --bg-surface:     #1a1d27;
  --bg-card:        #1f2333;
  --bg-card-hover:  #252a3a;

  --accent-blue:    #4a9eff;
  --accent-lime:    #7fff00;
  --accent-green:   #2ecc71;
  --accent-yellow:  #f1c40f;
  --accent-orange:  #e67e22;
  --accent-red:     #e74c3c;
  --accent-gold:    #ffd700;

  --urinal-body:    #f5f0e8;
  --urinal-border:  #cccccc;
  --urinal-bowl:    #d8cfc0;
  --urinal-drain:   #b0a898;

  --text-primary:   #f0f0f0;
  --text-secondary: #8892a4;
  --text-muted:     #555f72;

  --tile-light:     rgba(255, 255, 255, 0.04);
  --tile-dark:      rgba(0, 0, 0, 0.0);

  --wall-color:     #2a2d3a;
  --wall-dark:      #1a1c26;

  --radius-sm:      6px;
  --radius-md:      12px;
  --radius-lg:      20px;
  --radius-pill:    999px;

  --shadow-sm:      0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md:      0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg:      0 8px 40px rgba(0, 0, 0, 0.6);

  --transition-fast:   0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow:   0.4s ease;

  --font-display:  'Anton', 'Oswald', impact, sans-serif;
  --font-body:     -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono:     'Share Tech Mono', 'Courier New', monospace;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  line-height: 1.5;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

button:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
}

/* ============================================================
   APP WRAPPER
   ============================================================ */
#app {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ============================================================
   SCREENS
   ============================================================ */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  animation: fadeSlideIn 0.4s ease both;
}

.screen.active {
  display: flex;
}

/* ============================================================
   TITLE SCREEN (#screen-title)
   ============================================================ */
#screen-title {
  gap: 28px;
  text-align: center;
  padding: 24px 0 32px;
}

.title-badge {
  display: inline-block;
  background: linear-gradient(135deg, #1e2235, #2a2d3a);
  border: 1px solid rgba(74, 158, 255, 0.25);
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  animation: fadeSlideIn 0.5s ease both;
}

#screen-title h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 10vw, 5rem);
  font-weight: 400; /* Anton is always bold by design */
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--text-primary);
  text-shadow:
    0 0 40px rgba(74, 158, 255, 0.3),
    0 2px 0 rgba(0, 0, 0, 0.6);
  animation: fadeSlideIn 0.5s 0.1s ease both;
}

#screen-title h1 span {
  color: var(--accent-blue);
}

.title-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  font-style: italic;
  letter-spacing: 0.02em;
  max-width: 360px;
  animation: fadeSlideIn 0.5s 0.2s ease both;
}

.title-icon {
  font-size: 3.5rem;
  animation: fadeSlideIn 0.5s 0.15s ease both, bounce 2s 1s ease-in-out infinite;
  display: block;
}

#btn-start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent-blue), #2176d2);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 44px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 24px rgba(74, 158, 255, 0.35), 0 0 0 0 rgba(74, 158, 255, 0);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  animation: fadeSlideIn 0.5s 0.3s ease both;
  white-space: nowrap;
}

#btn-start:hover {
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 8px 32px rgba(74, 158, 255, 0.5), 0 0 0 4px rgba(74, 158, 255, 0.15);
  background: linear-gradient(135deg, #5aaeff, var(--accent-blue));
}

#btn-start:active {
  transform: scale(0.98) translateY(0);
  box-shadow: 0 2px 12px rgba(74, 158, 255, 0.35);
}

.title-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  animation: fadeSlideIn 0.5s 0.4s ease both;
}

/* ============================================================
   GAME SCREEN (#screen-game)
   ============================================================ */
#screen-game {
  gap: 20px;
  padding: 8px 0 24px;
}

/* ============================================================
   HUD
   ============================================================ */
#hud {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

#hud-level {
  display: flex;
  align-items: center;
  gap: 8px;
}

#hud-level-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

#hud-level-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: bold;
  color: var(--accent-blue);
}

#hud-score {
  display: flex;
  align-items: center;
  gap: 8px;
}

#hud-score-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

#hud-score-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--text-primary);
  min-width: 3ch;
  text-align: right;
  transition: color var(--transition-fast);
}

#hud-score-value.bump {
  color: var(--accent-green);
  animation: scoreBump 0.4s ease;
}

/* ============================================================
   SCENARIO INFO
   ============================================================ */
.scenario-info {
  width: 100%;
  text-align: center;
  padding: 4px 8px;
}

#scenario-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.01em;
  margin-bottom: 4px;
}

#scenario-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.4;
}

/* ============================================================
   BATHROOM WRAPPER & FLOOR
   ============================================================ */
#bathroom-wrapper {
  width: 100%;
  position: relative;
  background-color: #2c2f3e;
  /* Tile floor: repeating-linear-gradient to simulate 40×40px floor tiles */
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 39px,
      rgba(255, 255, 255, 0.055) 39px,
      rgba(255, 255, 255, 0.055) 40px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 39px,
      rgba(255, 255, 255, 0.055) 39px,
      rgba(255, 255, 255, 0.055) 40px
    );
  background-size: 40px 40px;
  border-radius: var(--radius-lg);
  padding: 0 24px 28px;
  box-shadow:
    var(--shadow-lg),
    inset 0 0 60px rgba(0, 0, 0, 0.35),
    inset 0 8px 30px rgba(0, 0, 0, 0.4);
  border: 2px solid #1a1c26;
  overflow: hidden;
}

/* Top wall — flush against ceiling, urinals mount to it */
#bathroom-wrapper::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 44px;
  background: linear-gradient(180deg, var(--wall-dark) 0%, var(--wall-color) 70%, #32364a 100%);
  border-bottom: 3px solid #111420;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255, 255, 255, 0.04) inset;
  z-index: 1;
}

/* Wall label */
#bathroom-wrapper::after {
  content: 'WALL';
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  color: rgba(255, 255, 255, 0.12);
  z-index: 2;
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   BATHROOM FLEX ROW
   ============================================================ */
#bathroom {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: center;
  gap: 18px;
  padding-top: 44px; /* clears the wall pseudo-element */
  position: relative;
  z-index: 2;
}

/* ============================================================
   URINAL
   ============================================================ */
.urinal {
  position: relative;
  width: 70px;
  height: 90px;
  background: linear-gradient(180deg, #e8e2d6 0%, var(--urinal-body) 40%, #ede8de 100%);
  border: 3px solid var(--urinal-border);
  /* U-shape / rounded rectangle wider at bottom — top-down view of porcelain */
  border-radius: 4px 4px 50% 50% / 4px 4px 20px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  box-shadow:
    0 3px 10px rgba(0, 0, 0, 0.45),
    0 1px 3px rgba(0, 0, 0, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.7),
    inset 0 -2px 6px rgba(0, 0, 0, 0.12);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
  user-select: none;
  /* Urinal flush-mount to wall: small connector tab at top */
  margin-top: -6px;
}

/* Mounting flange — the small bit that attaches to the wall */
.urinal::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 10px;
  background: linear-gradient(180deg, #c5bfb5, #b8b2a8);
  border-radius: 3px 3px 0 0;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-bottom: none;
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.2);
}

/* Inner bowl */
.urinal-bowl {
  width: 38px;
  height: 38px;
  background: radial-gradient(circle at 45% 40%, #ddd5c4, var(--urinal-bowl) 50%, var(--urinal-drain) 100%);
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.12);
  box-shadow:
    inset 0 2px 8px rgba(0, 0, 0, 0.25),
    inset 0 1px 3px rgba(0, 0, 0, 0.15);
  position: relative;
  margin-top: 10px;
  flex-shrink: 0;
}

/* Drain dot */
.urinal-bowl::after {
  content: '';
  position: absolute;
  bottom: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 7px;
  height: 7px;
  background: #9a9187;
  border-radius: 50%;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* ---- Hover state ---- */
.urinal:hover:not(.occupied):not(.selected):not([class*="result-"]) {
  transform: translateY(-3px) scale(1.03);
  border-color: var(--accent-yellow);
  box-shadow:
    0 6px 20px rgba(0, 0, 0, 0.5),
    0 0 16px rgba(241, 196, 15, 0.45),
    inset 0 1px 2px rgba(255, 255, 255, 0.7);
}

/* ---- Occupied state ---- */
.urinal.occupied {
  cursor: not-allowed;
  background: linear-gradient(180deg, #d8d3ca 0%, #cbc6bd 100%);
  border-color: #aaa69e;
  opacity: 0.88;
  box-shadow:
    0 3px 10px rgba(0, 0, 0, 0.45),
    inset 0 1px 2px rgba(255, 255, 255, 0.4),
    inset 0 -2px 6px rgba(0, 0, 0, 0.1);
}

.urinal.occupied:hover {
  transform: none;
  border-color: #aaa69e;
  box-shadow:
    0 3px 10px rgba(0, 0, 0, 0.45),
    inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

/* ---- Selected state ---- */
.urinal.selected {
  border-color: var(--accent-blue);
  animation: pulse-glow-blue 1.5s ease-in-out infinite;
  transform: translateY(-2px) scale(1.03);
}

/* ---- Result states ---- */
.urinal.result-perfect {
  border-color: var(--accent-green);
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(46, 204, 113, 0.6),
    0 0 40px rgba(46, 204, 113, 0.2),
    inset 0 1px 2px rgba(255, 255, 255, 0.7);
  cursor: default;
}

.urinal.result-good {
  border-color: #8bc34a;
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.4),
    0 0 16px rgba(139, 195, 74, 0.55),
    inset 0 1px 2px rgba(255, 255, 255, 0.7);
  cursor: default;
}

.urinal.result-okay {
  border-color: var(--accent-orange);
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.4),
    0 0 16px rgba(230, 126, 34, 0.5),
    inset 0 1px 2px rgba(255, 255, 255, 0.7);
  cursor: default;
}

.urinal.result-wrong {
  border-color: var(--accent-red);
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(231, 76, 60, 0.6),
    0 0 40px rgba(231, 76, 60, 0.2),
    inset 0 1px 2px rgba(255, 255, 255, 0.7);
  cursor: default;
}

/* Celebration: perfect + selected */
.urinal.result-perfect.selected {
  animation: celebration 0.6s ease forwards, pulse-glow-green 1.5s 0.6s ease-in-out infinite;
}

/* ============================================================
   PERSON ICON
   ============================================================ */
.person-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  opacity: 0.9;
  pointer-events: none;
  z-index: 3;
}

.person-icon svg {
  width: 100%;
  height: 100%;
  fill: var(--accent-red);
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.5));
}

/* ============================================================
   FEEDBACK AREA
   ============================================================ */
#feedback-area {
  width: 100%;
  background: rgba(31, 35, 51, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
  animation: fadeSlideIn 0.35s ease both;
}

#feedback-area.hidden {
  display: none;
}

#feedback-emoji {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 8px;
  display: block;
}

#feedback-msg {
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 4px;
}

#feedback-detail {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.4;
}

/* ============================================================
   NEXT BUTTON
   ============================================================ */
#btn-next {
  width: 100%;
  max-width: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-blue), #2176d2);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 15px 32px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 20px rgba(74, 158, 255, 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  animation: fadeSlideIn 0.3s ease both;
}

#btn-next:hover {
  transform: scale(1.04) translateY(-2px);
  box-shadow: 0 8px 28px rgba(74, 158, 255, 0.45);
}

#btn-next:active {
  transform: scale(0.97);
}

#btn-next.hidden {
  display: none;
}

/* ============================================================
   RESULTS SCREEN (#screen-results)
   ============================================================ */
#screen-results {
  gap: 24px;
  padding: 16px 0 32px;
}

.results-card {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.results-header-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

#result-score-display {
  font-family: var(--font-display);
  font-size: clamp(4rem, 18vw, 7rem);
  font-weight: 400;
  line-height: 1;
  color: var(--text-primary);
  text-shadow: 0 0 40px rgba(74, 158, 255, 0.3);
  margin-bottom: 4px;
}

.result-score-max {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

#result-rating {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
  /* Color set via JS based on score — default gold */
  color: var(--accent-gold);
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.35);
}

#result-rating.rating-good    { color: var(--accent-green); text-shadow: 0 0 20px rgba(46, 204, 113, 0.35); }
#result-rating.rating-okay    { color: var(--accent-yellow); text-shadow: 0 0 20px rgba(241, 196, 15, 0.35); }
#result-rating.rating-bad     { color: var(--accent-orange); text-shadow: 0 0 20px rgba(230, 126, 34, 0.35); }
#result-rating.rating-fail    { color: var(--accent-red); text-shadow: 0 0 20px rgba(231, 76, 60, 0.35); }

#result-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 400px;
  margin: 0 auto;
}

.results-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  margin: 20px auto;
}

.results-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  width: 100%;
  flex-wrap: wrap;
}

#btn-restart {
  flex: 1;
  min-width: 140px;
  max-width: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-blue), #2176d2);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 16px rgba(74, 158, 255, 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

#btn-restart:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 158, 255, 0.45);
}

#btn-restart:active {
  transform: scale(0.97);
}

#btn-share {
  flex: 1;
  min-width: 140px;
  max-width: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--accent-blue);
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 13px 24px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--accent-blue);
  box-shadow: 0 0 0 rgba(74, 158, 255, 0);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

#btn-share:hover {
  background: rgba(74, 158, 255, 0.1);
  box-shadow: 0 0 20px rgba(74, 158, 255, 0.2);
  transform: scale(1.05) translateY(-2px);
}

#btn-share:active {
  transform: scale(0.97);
}

/* ============================================================
   TOAST NOTIFICATION
   ============================================================ */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: rgba(20, 22, 32, 0.95);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-body);
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  z-index: 9999;
  pointer-events: none;
  animation: toastIn 0.3s ease forwards, toastOut 0.4s 2.2s ease forwards;
}

/* ============================================================
   PROGRESS INDICATOR (optional pip row)
   ============================================================ */
.progress-pips {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
}

.pip {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.pip.done {
  background: var(--accent-green);
  border-color: var(--accent-green);
  box-shadow: 0 0 6px rgba(46, 204, 113, 0.5);
}

.pip.current {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  box-shadow: 0 0 8px rgba(74, 158, 255, 0.6);
  transform: scale(1.3);
}

.pip.wrong {
  background: var(--accent-red);
  border-color: var(--accent-red);
  box-shadow: 0 0 6px rgba(231, 76, 60, 0.5);
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.hidden {
  display: none !important;
}

.text-center { text-align: center; }
.text-muted   { color: var(--text-muted); }
.mt-sm        { margin-top: 8px; }
.mt-md        { margin-top: 16px; }
.mt-lg        { margin-top: 24px; }

/* ============================================================
   ANIMATIONS / KEYFRAMES
   ============================================================ */

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow:
      0 3px 10px rgba(0, 0, 0, 0.45),
      0 0 8px currentColor;
  }
  50% {
    box-shadow:
      0 3px 10px rgba(0, 0, 0, 0.45),
      0 0 20px currentColor,
      0 0 35px currentColor;
  }
}

@keyframes pulse-glow-blue {
  0%, 100% {
    box-shadow:
      0 4px 14px rgba(0, 0, 0, 0.5),
      0 0 8px rgba(74, 158, 255, 0.6),
      inset 0 1px 2px rgba(255, 255, 255, 0.7);
  }
  50% {
    box-shadow:
      0 4px 14px rgba(0, 0, 0, 0.5),
      0 0 22px rgba(74, 158, 255, 0.8),
      0 0 40px rgba(74, 158, 255, 0.3),
      inset 0 1px 2px rgba(255, 255, 255, 0.7);
  }
}

@keyframes pulse-glow-green {
  0%, 100% {
    box-shadow:
      0 4px 14px rgba(0, 0, 0, 0.5),
      0 0 10px rgba(46, 204, 113, 0.6),
      inset 0 1px 2px rgba(255, 255, 255, 0.7);
  }
  50% {
    box-shadow:
      0 4px 14px rgba(0, 0, 0, 0.5),
      0 0 24px rgba(46, 204, 113, 0.85),
      0 0 45px rgba(46, 204, 113, 0.35),
      inset 0 1px 2px rgba(255, 255, 255, 0.7);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes celebration {
  0%   { transform: scale(1) rotate(0deg); }
  25%  { transform: scale(1.12) rotate(-3deg); }
  50%  { transform: scale(1.1) rotate(3deg); }
  75%  { transform: scale(1.08) rotate(-2deg); }
  100% { transform: scale(1) rotate(0deg); }
}

@keyframes scoreBump {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.25); }
  100% { transform: scale(1); }
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  to {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
  }
}

/* ============================================================
   SCROLLBAR STYLING
   ============================================================ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  #app {
    padding: 10px;
  }

  #screen-title h1 {
    font-size: 2.4rem;
  }

  .title-subtitle {
    font-size: 0.88rem;
  }

  #btn-start {
    font-size: 1.1rem;
    padding: 14px 32px;
  }

  /* Smaller urinals on mobile */
  .urinal {
    width: 55px;
    height: 75px;
  }

  .urinal::before {
    width: 22px;
    height: 8px;
    top: -8px;
  }

  .urinal-bowl {
    width: 30px;
    height: 30px;
    margin-top: 8px;
  }

  .urinal-bowl::after {
    width: 5px;
    height: 5px;
    bottom: 5px;
  }

  #bathroom {
    gap: 12px;
    padding-top: 44px;
  }

  #bathroom-wrapper {
    padding: 0 14px 22px;
  }

  .person-icon {
    width: 24px;
    height: 24px;
  }

  #scenario-name {
    font-size: 1.05rem;
  }

  #scenario-desc {
    font-size: 0.82rem;
  }

  #feedback-area {
    padding: 16px 18px;
  }

  #feedback-emoji {
    font-size: 2.4rem;
  }

  #feedback-msg {
    font-size: 0.92rem;
  }

  .results-card {
    padding: 24px 18px;
  }

  #result-score-display {
    font-size: 4.5rem;
  }

  #result-rating {
    font-size: 1.5rem;
  }

  .results-actions {
    flex-direction: column;
    align-items: center;
  }

  #btn-restart,
  #btn-share {
    width: 100%;
    max-width: none;
  }

  #btn-next {
    font-size: 1.05rem;
    padding: 13px 24px;
  }

  .toast {
    bottom: 20px;
    font-size: 0.82rem;
    padding: 9px 18px;
    white-space: normal;
    max-width: calc(100vw - 32px);
    text-align: center;
  }
}

/* ============================================================
   RESPONSIVE — LARGE SCREENS (≥ 640px)
   ============================================================ */
@media (min-width: 640px) {
  #bathroom-wrapper {
    padding: 0 32px 36px;
  }

  #bathroom {
    gap: 22px;
  }

  .urinal {
    width: 76px;
    height: 96px;
  }

  .urinal-bowl {
    width: 42px;
    height: 42px;
  }
}