/* ============================================================
   Mathagram.org — Characters Stylesheet
   Buddy popup + character picker styles
   ============================================================ */

/* ----- Buddy Popup ----- */
.character-buddy {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: var(--color-white, #ffffff);
  border: 2px solid var(--color-border, #e2e8f0);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-lg, 0 10px 15px -3px rgba(0, 0, 0, 0.08));
  z-index: 1000;
  max-width: 320px;

  /* Hidden state: slid down + invisible */
  transform: translateY(120%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.25s ease;
}

.character-buddy.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* Expression border colors */
.character-buddy.happy {
  border-color: #22c55e;
}

.character-buddy.thinking {
  border-color: #eab308;
}

.character-buddy.encouraging {
  border-color: #f97316;
}

/* ----- Buddy Image ----- */
.buddy-img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-border, #e2e8f0);
}

/* ----- Buddy Message ----- */
.buddy-msg {
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--color-text, #1a1a2e);
  margin: 0;
}

/* ----- Character Picker (signup page) ----- */
.character-picker {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  width: 100%;
}

.character-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 8px;
  border: 2px solid var(--color-border, #e2e8f0);
  border-radius: var(--radius, 12px);
  background: var(--color-white, #ffffff);
  cursor: pointer;
  transition: transform 0.15s ease,
              border-color 0.15s ease,
              box-shadow 0.15s ease;
}

.character-option:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md, 0 4px 6px -1px rgba(0, 0, 0, 0.08));
}

.character-option.selected {
  border-color: var(--color-primary, #00e5c8);
  background: rgba(0, 229, 200, 0.06);
  box-shadow: 0 0 0 3px rgba(0, 229, 200, 0.15);
}

.character-option img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-border, #e2e8f0);
}

.character-option .char-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text, #1a1a2e);
  text-align: center;
}

.character-option .char-type {
  font-size: 0.7rem;
  color: var(--color-text-muted, #94a3b8);
  text-align: center;
}

/* ----- Mobile Responsive ----- */
@media (max-width: 600px) {
  .character-picker {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .character-buddy {
    bottom: 12px;
    right: 12px;
    left: 12px;
    max-width: none;
  }
}