/*
 * Bee Ready Design System v1
 * Foundation layer only.
 * No resets, no framework dependencies, no plugin overrides.
 */

/* --------------------------------------------------------------------------
   Design Tokens
   -------------------------------------------------------------------------- */

:root {
  /* Brand colors */
  --br-color-brand-yellow: #f7e232;
  --br-color-brand-yellow-deep: #ffd84d;
  --br-color-brand-teal: #52d9c7;
  --br-color-brand-teal-deep: #24b8aa;
  --br-color-brand-navy: #1f2a44;
  --br-color-brand-navy-deep: #17212d;
  --br-color-brand-pink: #ff8db1;

  /* Backgrounds */
  --br-color-surface: #ffffff;
  --br-color-surface-soft: #fffdf7;
  --br-color-surface-warm: #fff7d8;
  --br-color-surface-teal: #eafffb;
  --br-color-page-soft: #f6f8fb;

  /* Text */
  --br-color-text: #1f2a44;
  --br-color-text-strong: #17212d;
  --br-color-text-soft: #5c667a;
  --br-color-text-inverse: #ffffff;

  /* Feedback */
  --br-color-success: #2d8b42;
  --br-color-success-soft: #eef9ef;
  --br-color-error: #cb3154;
  --br-color-error-soft: #fff0f3;
  --br-color-warning: #b67600;
  --br-color-warning-soft: #fff7de;

  /* Borders */
  --br-color-border: #dbe3ee;
  --br-color-border-strong: #b9c6d7;

  /* Radius */
  --br-radius-xs: 10px;
  --br-radius-sm: 14px;
  --br-radius-md: 18px;
  --br-radius-lg: 24px;
  --br-radius-xl: 30px;
  --br-radius-pill: 999px;

  /* Spacing */
  --br-space-1: 4px;
  --br-space-2: 8px;
  --br-space-3: 12px;
  --br-space-4: 16px;
  --br-space-5: 20px;
  --br-space-6: 24px;
  --br-space-7: 32px;
  --br-space-8: 40px;

  /* Shadows */
  --br-shadow-soft: 0 8px 18px rgba(31, 42, 68, 0.08);
  --br-shadow-card: 0 14px 32px rgba(31, 42, 68, 0.10);
  --br-shadow-pop: 0 16px 34px rgba(31, 42, 68, 0.14);

  /* Typography */
  --br-font-en: "Futura", "Arial Rounded MT Bold", sans-serif;
  --br-font-jp: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", sans-serif;
  --br-font-ui: "Futura", "Arial Rounded MT Bold", "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", sans-serif;
  --br-font-size-xs: 12px;
  --br-font-size-sm: 14px;
  --br-font-size-md: 16px;
  --br-font-size-lg: 20px;
  --br-font-size-xl: 28px;
  --br-line-height-tight: 1.2;
  --br-line-height-base: 1.5;

  /* Motion */
  --br-ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);
  --br-duration-fast: 120ms;
  --br-duration-base: 180ms;
  --br-duration-slow: 280ms;

  /* Focus */
  --br-focus-ring: 0 0 0 4px rgba(82, 217, 199, 0.28);
}

/* --------------------------------------------------------------------------
   Shared Focus Styles
   -------------------------------------------------------------------------- */

.br-button:focus-visible,
.br-choice-card:focus-visible,
.br-audio-button:focus-visible {
  outline: none;
  box-shadow: var(--br-focus-ring);
}

/* --------------------------------------------------------------------------
   Section Wrapper
   -------------------------------------------------------------------------- */

.br-section {
  max-width: 960px;
  margin-inline: auto;
  padding: var(--br-space-6);
  color: var(--br-color-text);
  font-family: var(--br-font-ui);
}

/* --------------------------------------------------------------------------
   Base Card
   -------------------------------------------------------------------------- */

.br-card {
  background: var(--br-color-surface);
  border: 1px solid var(--br-color-border);
  border-radius: var(--br-radius-lg);
  box-shadow: var(--br-shadow-soft);
  color: var(--br-color-text);
  padding: var(--br-space-6);
  font-family: var(--br-font-ui);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.br-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--br-space-2);
  min-height: 56px;
  padding: 14px 22px;
  border: 2px solid transparent;
  border-radius: var(--br-radius-pill);
  background: var(--br-color-surface);
  color: var(--br-color-text-strong);
  font-family: var(--br-font-ui);
  font-size: var(--br-font-size-md);
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform var(--br-duration-base) var(--br-ease-standard),
    box-shadow var(--br-duration-base) var(--br-ease-standard),
    background-color var(--br-duration-base) var(--br-ease-standard),
    border-color var(--br-duration-base) var(--br-ease-standard),
    color var(--br-duration-base) var(--br-ease-standard);
  -webkit-tap-highlight-color: transparent;
}

.br-button:hover {
  transform: translateY(-1px);
  box-shadow: var(--br-shadow-soft);
}

.br-button:active {
  transform: translateY(0);
}

.br-button--primary {
  background: linear-gradient(180deg, var(--br-color-brand-yellow) 0%, var(--br-color-brand-yellow-deep) 100%);
  color: var(--br-color-text-strong);
  border-color: rgba(31, 42, 68, 0.08);
}

.br-button--secondary {
  background: var(--br-color-surface);
  color: var(--br-color-brand-navy);
  border-color: var(--br-color-border-strong);
}

.br-button--danger {
  background: linear-gradient(180deg, #ff7f96 0%, var(--br-color-error) 100%);
  color: var(--br-color-text-inverse);
  border-color: rgba(203, 49, 84, 0.35);
}

/* --------------------------------------------------------------------------
   Activity Shell
   -------------------------------------------------------------------------- */

.br-activity-shell {
  max-width: 920px;
  margin-inline: auto;
  padding: clamp(20px, 4vw, 32px);
  border: 3px solid var(--br-color-brand-yellow);
  border-radius: var(--br-radius-xl);
  background:
    radial-gradient(circle at top left, rgba(82, 217, 199, 0.14), transparent 34%),
    linear-gradient(180deg, var(--br-color-surface-soft) 0%, var(--br-color-surface) 100%);
  box-shadow: var(--br-shadow-card);
  color: var(--br-color-text);
  font-family: var(--br-font-ui);
}

/* --------------------------------------------------------------------------
   Activity Header
   -------------------------------------------------------------------------- */

.br-activity-header {
  display: flex;
  flex-direction: column;
  gap: var(--br-space-2);
  margin-bottom: var(--br-space-6);
  text-align: center;
}

.br-activity-header > * {
  margin: 0;
}

/* --------------------------------------------------------------------------
   Progress Bar
   -------------------------------------------------------------------------- */

.br-progress {
  width: 100%;
  min-height: 18px;
  overflow: hidden;
  border-radius: var(--br-radius-pill);
  background: #e7edf5;
  box-shadow: inset 0 1px 2px rgba(31, 42, 68, 0.08);
}

.br-progress__bar {
  display: block;
  height: 18px;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--br-color-brand-teal) 0%, var(--br-color-brand-yellow) 100%);
  transition: width var(--br-duration-slow) var(--br-ease-standard);
}

/* --------------------------------------------------------------------------
   BXP Reward Pill
   -------------------------------------------------------------------------- */

.br-bxp-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  border-radius: var(--br-radius-pill);
  background: linear-gradient(135deg, var(--br-color-brand-yellow) 0%, #fff3bf 100%);
  color: var(--br-color-brand-navy-deep);
  font-family: var(--br-font-ui);
  font-size: var(--br-font-size-sm);
  font-weight: 900;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 14px rgba(247, 226, 50, 0.22);
}

/* --------------------------------------------------------------------------
   Toasts
   -------------------------------------------------------------------------- */

.br-success-toast,
.br-error-toast {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 99999;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  max-width: min(92vw, 420px);
  padding: 14px 18px;
  border-radius: var(--br-radius-lg);
  box-shadow: var(--br-shadow-pop);
  font-family: var(--br-font-ui);
  font-size: var(--br-font-size-md);
  font-weight: 900;
  text-align: center;
}

.br-success-toast {
  background: var(--br-color-surface);
  color: var(--br-color-text-strong);
  border: 3px solid transparent;
  background-image:
    linear-gradient(var(--br-color-surface), var(--br-color-surface)),
    linear-gradient(135deg, var(--br-color-brand-yellow) 0%, var(--br-color-brand-teal) 100%);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.br-error-toast {
  background: var(--br-color-error-soft);
  color: var(--br-color-error);
  border: 2px solid rgba(203, 49, 84, 0.22);
}

/* --------------------------------------------------------------------------
   Choice Grid
   -------------------------------------------------------------------------- */

.br-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--br-space-4);
}

.br-choice-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--br-space-3);
  min-height: 132px;
  padding: var(--br-space-5);
  border: 2px solid var(--br-color-border);
  border-radius: var(--br-radius-lg);
  background: var(--br-color-surface);
  box-shadow: var(--br-shadow-soft);
  color: var(--br-color-text);
  font-family: var(--br-font-ui);
  font-size: var(--br-font-size-md);
  font-weight: 800;
  text-align: center;
  cursor: pointer;
  transition:
    transform var(--br-duration-base) var(--br-ease-standard),
    box-shadow var(--br-duration-base) var(--br-ease-standard),
    border-color var(--br-duration-base) var(--br-ease-standard),
    background-color var(--br-duration-base) var(--br-ease-standard);
  -webkit-tap-highlight-color: transparent;
}

.br-choice-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--br-shadow-card);
}

.br-choice-card--correct {
  border-color: #8bd17c;
  background: var(--br-color-success-soft);
  color: var(--br-color-success);
}

.br-choice-card--wrong {
  border-color: #f2a7a7;
  background: var(--br-color-error-soft);
  color: var(--br-color-error);
}

/* --------------------------------------------------------------------------
   Locked Card
   -------------------------------------------------------------------------- */

.br-locked-card {
  padding: clamp(20px, 4vw, 32px);
  border: 2px dashed rgba(31, 42, 68, 0.16);
  border-radius: var(--br-radius-xl);
  background: linear-gradient(180deg, var(--br-color-surface-soft) 0%, #ffffff 100%);
  box-shadow: var(--br-shadow-soft);
  color: var(--br-color-text);
  text-align: center;
  font-family: var(--br-font-ui);
}

/* --------------------------------------------------------------------------
   Audio Button
   -------------------------------------------------------------------------- */

.br-audio-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 18px;
  border: 2px solid rgba(36, 184, 170, 0.18);
  border-radius: var(--br-radius-pill);
  background: linear-gradient(180deg, var(--br-color-brand-teal) 0%, var(--br-color-brand-teal-deep) 100%);
  color: var(--br-color-text-inverse);
  font-family: var(--br-font-ui);
  font-size: var(--br-font-size-sm);
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform var(--br-duration-base) var(--br-ease-standard),
    box-shadow var(--br-duration-base) var(--br-ease-standard),
    opacity var(--br-duration-base) var(--br-ease-standard);
  -webkit-tap-highlight-color: transparent;
}

.br-audio-button:hover {
  transform: translateY(-1px);
  box-shadow: var(--br-shadow-soft);
}

/* --------------------------------------------------------------------------
   Small Label
   -------------------------------------------------------------------------- */

.br-small-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: var(--br-radius-pill);
  background: var(--br-color-surface-warm);
  color: var(--br-color-brand-navy);
  font-family: var(--br-font-ui);
  font-size: var(--br-font-size-xs);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   Mobile Rules
   -------------------------------------------------------------------------- */

@media (max-width: 782px) {
  .br-section {
    padding: var(--br-space-5);
  }

  .br-card,
  .br-activity-shell,
  .br-locked-card {
    border-radius: var(--br-radius-lg);
  }

  .br-choice-grid {
    grid-template-columns: 1fr;
  }

  .br-choice-card {
    min-height: 120px;
  }

  .br-button,
  .br-audio-button {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .br-section {
    padding: var(--br-space-4);
  }

  .br-card,
  .br-activity-shell,
  .br-locked-card {
    padding: var(--br-space-5);
  }

  .br-success-toast,
  .br-error-toast {
    top: 12px;
    min-height: 52px;
    font-size: var(--br-font-size-sm);
  }
}

/* --------------------------------------------------------------------------
   Reduced Motion Support
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .br-button,
  .br-choice-card,
  .br-audio-button,
  .br-progress__bar,
  .br-success-toast,
  .br-error-toast {
    transition: none !important;
    animation: none !important;
  }

  .br-button:hover,
  .br-choice-card:hover,
  .br-audio-button:hover {
    transform: none;
  }
}