/* ═══════════════════════════════════════════════════════════════
   AniPet — Child-Friendly Stylesheet
   ═══════════════════════════════════════════════════════════════ */

/* ── Google Font (progressive enhancement) ── */
@import url('https://fonts.googleapis.com/css2?family=Fredoka+One&family=Nunito:wght@400;700;900&display=swap');

/* ── Design Tokens ── */
:root {
  --bg:           #FFF9F0;
  --header-bg:    #FF7043;
  --header-text:  #FFFFFF;
  --text:         #3E2723;
  --text-mid:     #6D4C41;
  --accent:       #FF7043;
  --accent-dark:  #E64A19;
  --btn-bg:       #FFE082;
  --btn-border:   #FFB300;
  --btn-active-bg:#FF7043;
  --btn-active-border: #E64A19;
  --btn-active-text: #FFFFFF;
  --card-shadow:  0 6px 20px rgba(62, 39, 35, 0.15);
  --card-hover-shadow: 0 10px 30px rgba(62, 39, 35, 0.25);
  --radius-lg:    24px;
  --radius-pill:  999px;
  --font:         "Fredoka One", "Nunito", "Comic Sans MS", "Chalkboard SE", cursive, system-ui;
}

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

/* ── Base ── */
html { font-size: 18px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ═══════════════════════════════════
   HEADER
═══════════════════════════════════ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  background: var(--header-bg);
  color: var(--header-text);
  padding: 12px 20px;
  box-shadow: 0 3px 12px rgba(0,0,0,0.2);
  min-height: 64px;
}

#logo {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
}
.logo-icon { width: 36px; height: 36px; object-fit: contain; flex-shrink: 0; }
.logo-text  {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: #FFFFFF;
  text-shadow: 2px 2px 0 rgba(0,0,0,0.15);
}

#back-btn {
  grid-column: 1;
  justify-self: start;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.25);
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-pill);
  color: #FFFFFF;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  padding: 8px 16px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  min-height: 44px;
  min-width: 80px;
}
#back-btn:hover  { background: rgba(255,255,255,0.38); }
#back-btn:active { transform: scale(0.94); }
/* Keep back-btn in grid flow even when hidden so logo stays centred */
#back-btn[hidden] {
  display: flex !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

.back-arrow { font-size: 1.2rem; }

#mute-btn {
  grid-column: 3;
  justify-self: end;
  background: rgba(255,255,255,0.25);
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 50%;
  color: #FFFFFF;
  font-size: 1.2rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: background 0.15s, transform 0.1s;
  line-height: 1;
}
#mute-btn:hover  { background: rgba(255,255,255,0.38); }
#mute-btn:active { transform: scale(0.92); }

/* ═══════════════════════════════════
   VIEW ROOT
═══════════════════════════════════ */
#view-root {
  min-height: calc(100dvh - 64px);
}

/* ═══════════════════════════════════
   GRID VIEW
═══════════════════════════════════ */
.grid-view {
  padding: 24px 20px 40px;
  animation: fadeIn 0.3s ease;
}

.grid-title {
  text-align: center;
  font-size: 1.5rem;
  color: var(--text-mid);
  margin-bottom: 28px;
  font-weight: 700;
}

.character-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

/* ── Character Card ── */
.char-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  padding: 20px 16px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  border: 3px solid transparent;
  position: relative;
  overflow: hidden;
}
.char-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: calc(var(--radius-lg) - 3px);
  opacity: 0;
  transition: opacity 0.2s;
}
.char-card:hover  { transform: translateY(-6px) scale(1.03); box-shadow: var(--card-hover-shadow); }
.char-card:active { transform: scale(0.96); }

/* Wobble on hover */
@keyframes wobble {
  0%,100% { transform: translateY(-6px) scale(1.03) rotate(0deg); }
  25%      { transform: translateY(-6px) scale(1.03) rotate(-2deg); }
  75%      { transform: translateY(-6px) scale(1.03) rotate(2deg); }
}
.char-card:hover { animation: wobble 0.5s ease; }

.char-card-canvas-wrap {
  width: 120px;
  height: 120px;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(0,0,0,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.char-card canvas {
  display: block;
  width: 120px;
  height: 120px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.char-card-emoji {
  font-size: 2.8rem;
  line-height: 1;
}

.char-card-name {
  font-size: 1.25rem;
  font-weight: 900;
  text-align: center;
  color: var(--text);
  letter-spacing: 0.3px;
}

.char-card-label {
  font-size: 0.85rem;
  color: var(--text-mid);
  text-align: center;
  font-weight: 700;
}

/* tap hint */
.char-card-tap {
  font-size: 0.75rem;
  color: var(--text-mid);
  opacity: 0.6;
  text-align: center;
}

/* Placeholder (no sprite loaded) */
.placeholder-canvas {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: var(--thumb-size, 120px);
  height: var(--thumb-size, 120px);
  border-radius: 16px;
  font-size: 3.5rem;
}

/* ═══════════════════════════════════
   DETAIL VIEW
═══════════════════════════════════ */
.detail-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px 20px 48px;
  gap: 20px;
  animation: slideUp 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

.detail-name {
  font-size: 2rem;
  font-weight: 900;
  color: var(--text);
  text-align: center;
  letter-spacing: 0.5px;
}

.detail-canvas-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(62, 39, 35, 0.2);
  background: rgba(0,0,0,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
}

#anim-canvas {
  display: block;
  width: min(80vw, 320px);
  height: min(80vw, 320px);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}


/* Loading spinner overlay */
.canvas-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.7);
  border-radius: var(--radius-lg);
}
.spinner {
  width: 48px;
  height: 48px;
  border: 5px solid #FFE082;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Current animation label */
.detail-anim-label {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-dark);
  text-align: center;
  min-height: 2rem;
}

/* ── Animation Selector ── */
.anim-selector-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-mid);
  text-align: center;
  margin-bottom: 4px;
}

.anim-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 420px;
}

.anim-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: var(--btn-bg);
  border: 2.5px solid var(--btn-border);
  border-radius: 16px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 4px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.15s;
  min-height: 50px;
  text-align: center;
  line-height: 1.2;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.anim-btn .btn-emoji { font-size: 1.3rem; line-height: 1; }
.anim-btn:hover  { background: #FFD54F; box-shadow: 0 3px 10px rgba(0,0,0,0.1); }
.anim-btn:active { transform: scale(0.93); }
.anim-btn.active {
  background: var(--btn-active-bg);
  border-color: var(--btn-active-border);
  color: var(--btn-active-text);
  box-shadow: 0 4px 14px rgba(255, 112, 67, 0.45);
  transform: scale(1.05);
}

/* ═══════════════════════════════════
   EMPTY / LOADING STATES
═══════════════════════════════════ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-mid);
}
.empty-state .big-emoji { font-size: 4rem; }
.empty-state p { font-size: 1.1rem; font-weight: 700; }

/* ═══════════════════════════════════
   TRANSITIONS
═══════════════════════════════════ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.view-exit {
  animation: fadeOut 0.2s ease forwards;
}
@keyframes fadeOut {
  to { opacity: 0; transform: scale(0.97); }
}

/* ═══════════════════════════════════
   INSTALL BANNER
═══════════════════════════════════ */
#install-banner {
  position: fixed;
  bottom: calc(8px + env(safe-area-inset-bottom, 0px));
  left: 8px;
  right: 8px;
  border-radius: var(--radius-lg);
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #3E2723;
  color: #FFFFFF;
  padding: 12px 16px;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
  box-shadow: 0 6px 24px rgba(0,0,0,0.3);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  animation: slideUpBanner 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-wrap: nowrap;
}
@keyframes slideUpBanner {
  from { opacity: 0; transform: translateY(calc(100% + 8px)); }
  to   { opacity: 1; transform: translateY(0); }
}
.install-banner-text { flex: 1; min-width: 0; }
.install-banner-actions { display: flex; gap: 8px; flex-shrink: 0; }

#install-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 8px 18px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
}
#install-btn:hover  { background: var(--accent-dark); }
#install-btn:active { transform: scale(0.95); }

#install-dismiss {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
#install-dismiss:hover { background: rgba(255,255,255,0.25); }

/* ═══════════════════════════════════
   RESPONSIVE
═══════════════════════════════════ */

/* ── Small phone (portrait) ── */
@media (max-width: 480px) {
  html { font-size: 16px; }
  .logo-text { font-size: 1.5rem; }
  .logo-icon { width: 30px; height: 30px; }
  /* Back button: icon-only on small phones */
  #back-btn { min-width: 40px; width: 40px; height: 40px; padding: 0; justify-content: center; border-radius: 50%; }
  .back-text { display: none; }
  .character-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .char-card { padding: 14px 10px 12px; --thumb-size: 100px; }
  .char-card-canvas-wrap,
  .char-card canvas { width: 100px; height: 100px; }
  .anim-btn { font-size: 0.85rem; padding: 8px 12px; min-width: 70px; }
}

/* ── Phone landscape ── */
@media (max-height: 500px) and (orientation: landscape) {
  #site-header { min-height: 52px; padding: 8px 16px; }
  .logo-text { font-size: 1.3rem; }
  .logo-icon { width: 28px; height: 28px; }
  #view-root { min-height: calc(100dvh - 52px); }

  /* Grid: more columns, less vertical padding */
  .grid-view { padding: 12px 16px 24px; }
  .grid-title { margin-bottom: 14px; font-size: 1.1rem; }
  .character-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
  }
  .char-card { padding: 10px 8px; --thumb-size: 80px; }
  .char-card-canvas-wrap,
  .char-card canvas { width: 80px; height: 80px; }

  /* Detail: side-by-side canvas + buttons */
  .detail-view {
    flex-direction: row;
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 12px 16px 24px;
    gap: 16px;
  }
  .detail-name { width: 100%; margin-bottom: 0; font-size: 1.4rem; }
  #anim-canvas {
    width: min(45vw, 260px);
    height: min(45vw, 260px);
  }
  .anim-selector { max-width: 300px; grid-template-columns: repeat(3, 1fr); }
  .anim-btn { font-size: 0.78rem; padding: 6px 4px; min-height: 38px; }
}

/* ── Tablet (768px+) ── */
@media (min-width: 768px) {
  .character-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 28px;
  }
  .char-card { --thumb-size: 140px; }
  .char-card-canvas-wrap,
  .char-card canvas { width: 140px; height: 140px; }

  /* Larger detail canvas on tablet */
  #anim-canvas {
    width: min(70vw, 420px);
    height: min(70vw, 420px);
  }
  .detail-name { font-size: 2.4rem; }
  .anim-selector { grid-template-columns: repeat(4, 1fr); max-width: 560px; }
  .anim-btn { font-size: 0.95rem; padding: 10px 8px; }
}

/* ── Large tablet / desktop (1024px+) ── */
@media (min-width: 1024px) {
  /* Detail view: canvas left, controls right */
  .detail-view {
    flex-direction: row;
    align-items: flex-start;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    padding: 40px 40px 60px;
  }
  .detail-name {
    width: 100%;
    text-align: center;
    font-size: 2.6rem;
  }
  .detail-canvas-wrap { flex-shrink: 0; }
  #anim-canvas {
    width: min(40vw, 480px);
    height: min(40vw, 480px);
  }
  .detail-controls {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    max-width: 340px;
    padding-top: 8px;
  }
  .anim-selector {
    grid-template-columns: repeat(3, 1fr);
    max-width: 340px;
  }
  .detail-anim-label { text-align: left; }
  .anim-selector-title { text-align: left; }
}