/* ============================================================
   BUILDYBOT — APP VIEWER LAYOUT
   ============================================================ */

/* --- App-specific custom properties (override these) --- */
:root {
  --app-header-height: 48px;
  --app-header-bg: var(--nav-bg);
  --app-header-text: var(--nav-text);
  --app-header-border: var(--border-color);
  --app-header-font-size: 0.88rem;
  --app-header-padding-x: 1rem;
  --app-back-btn-bg: transparent;
  --app-back-btn-color: var(--nav-text);
  --app-back-btn-hover-bg: rgba(255, 255, 255, 0.12);
  --app-back-btn-radius: var(--radius-sm);
  --app-body-bg: var(--bg);
  --app-body-padding: 0;

  /* App add-ons */
  --bg: #0f1220;
  --card: rgba(255,255,255,0.06);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.72);
  --border-color: rgba(255,255,255,0.14);
  --nav-bg: rgba(10, 12, 22, 0.9);
  --nav-text: rgba(255,255,255,0.92);
  --radius-sm: 10px;
  --radius-md: 16px;
  --transition-speed: 0.2s;

  --accent: #ffd34d;
  --accent2: #ff6ad5;
  --btn-bg: rgba(255,255,255,0.10);
  --btn-bg-hover: rgba(255,255,255,0.16);
  --btn-border: rgba(255,255,255,0.18);
}

/* --- Header bar --- */
.app-viewer-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  display: flex;
  align-items: center;
  height: var(--app-header-height);
  background: var(--app-header-bg);
  color: var(--app-header-text);
  border-bottom: 1px solid var(--app-header-border);
  padding: 0 var(--app-header-padding-x);
  gap: 0.75rem;
  font-size: var(--app-header-font-size);
  transition: background-color var(--transition-speed, 0.2s) ease,
              border-color var(--transition-speed, 0.2s) ease;
}

/* --- Back button --- */
.app-viewer-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  background: var(--app-back-btn-bg);
  color: var(--app-back-btn-color);
  border: none;
  border-radius: var(--app-back-btn-radius);
  font-size: inherit;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease;
}

.app-viewer-back:hover,
.app-viewer-back:focus-visible {
  background: var(--app-back-btn-hover-bg);
  color: var(--app-back-btn-color);
  text-decoration: none;
}

.app-viewer-back i {
  font-size: 1.1em;
}

/* --- Separator between back button and app name --- */
.app-viewer-sep {
  width: 1px;
  height: 1.2rem;
  background: currentColor;
  opacity: 0.25;
  flex-shrink: 0;
}

/* --- App name --- */
.app-viewer-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

/* --- Right-side slot for optional actions --- */
.app-viewer-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* --- Main content area beneath the header --- */
.app-viewer-body {
  flex: 1;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(255, 211, 77, 0.10), transparent 60%),
              radial-gradient(1100px 700px at 80% 0%, rgba(255, 106, 213, 0.10), transparent 55%),
              var(--app-body-bg);
  padding: var(--app-body-padding);
  min-height: calc(100vh - var(--app-header-height));
}

@media (max-width: 575.98px) {
  .app-viewer-header {
    gap: 0.5rem;
    --app-header-padding-x: 0.65rem;
  }

  .app-viewer-back span:nth-child(2) {
    display: none;
  }
}

/* ============================================================
   APP UI
   ============================================================ */

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
}

.stage {
  position: relative;
  min-height: calc(100vh - var(--app-header-height));
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  overflow: hidden;
}

.center-card {
  width: min(560px, 92vw);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.25rem 1.1rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 60px rgba(0,0,0,0.45);
  text-align: center;
  position: relative;
  z-index: 2;
}

.title {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  letter-spacing: 0.2px;
}
.subtitle {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.fart-btn {
  width: 100%;
  border: 1px solid var(--btn-border);
  background: linear-gradient(180deg, rgba(255,255,255,0.14), rgba(255,255,255,0.08));
  color: var(--text);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  font-weight: 800;
  letter-spacing: 0.6px;
  cursor: pointer;
  user-select: none;
  transition: transform 0.08s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.fart-btn:hover { background: linear-gradient(180deg, rgba(255,255,255,0.18), rgba(255,255,255,0.10)); }
.fart-btn:active { transform: translateY(1px) scale(0.99); }
.fart-btn:focus-visible { outline: 2px solid rgba(255, 211, 77, 0.65); outline-offset: 3px; }

.hint {
  margin-top: 0.9rem;
  min-height: 1.25rem;
  color: rgba(255,255,255,0.85);
  font-weight: 700;
}

.mini-btn {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--text);
  border-radius: 12px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-weight: 650;
}
.mini-btn:hover { background: var(--btn-bg-hover); }
.mini-btn:focus-visible { outline: 2px solid rgba(255,255,255,0.35); outline-offset: 2px; }

.overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0,0,0,0.25);
}

.sprinkles {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.sprinkle {
  position: absolute;
  font-weight: 900;
  will-change: transform, opacity;
  filter: drop-shadow(0 10px 18px rgba(0,0,0,0.35));
  animation: popIn 900ms ease forwards;
  user-select: none;
  white-space: pre;
}

@keyframes popIn {
  0% { transform: translateY(10px) scale(0.85) rotate(-6deg); opacity: 0; }
  15% { opacity: 1; }
  100% { transform: translateY(0) scale(1) rotate(0deg); opacity: 1; }
}

.stage.poop-mode {
  background:
    radial-gradient(900px 500px at 20% 30%, rgba(255, 211, 77, 0.13), transparent 60%),
    radial-gradient(900px 520px at 80% 70%, rgba(255, 106, 213, 0.12), transparent 62%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.04) 0 12px, rgba(255,255,255,0.02) 12px 24px),
    #0d1020;
}

@media (prefers-reduced-motion: reduce) {
  .sprinkle { animation: none; }
  .fart-btn { transition: none; }
}