/* CADO Buddy — premium polish, gamification, motion */

:root {
  --buddy-radius: 14px;
  --buddy-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --buddy-surface: rgba(255, 255, 255, 0.92);
  --buddy-glow: rgba(79, 70, 229, 0.15);
}

[data-theme="dark"] {
  --buddy-surface: rgba(20, 26, 46, 0.95);
  --buddy-glow: rgba(129, 140, 248, 0.18);
}

/* Page transitions */
.view.view-entering {
  animation: buddyViewIn 0.42s var(--buddy-ease) both;
}

@keyframes buddyViewIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Button press feedback */
.btn-pressed {
  transform: scale(0.97) !important;
  transition: transform 0.12s var(--buddy-ease) !important;
}

.btn,
.subject-card,
.feature-card,
.cora-chip {
  transition: transform 0.2s var(--buddy-ease), box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover:not(:disabled),
.subject-card:hover,
.feature-card:hover,
.cora-chip:hover {
  transform: translateY(-2px);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
}

.subject-card:hover,
.feature-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, 0.25);
}

/* Gamification HUD */
.buddy-hud {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.buddy-hud-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #f1f5f9;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.buddy-hud-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.buddy-hud-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.buddy-hud-icon {
  font-size: 0.85rem;
  line-height: 1;
}

.buddy-hud-name {
  max-width: 5.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0.9;
}

.buddy-hud-name--guest {
  opacity: 0.65;
  font-style: italic;
}

.buddy-hud-panel {
  position: fixed;
  top: calc(var(--header-h) + 0.5rem);
  right: 1rem;
  width: min(320px, calc(100vw - 2rem));
  padding: 1rem 1.1rem;
  border-radius: var(--buddy-radius);
  background: var(--buddy-surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transition: opacity 0.25s var(--buddy-ease), transform 0.25s var(--buddy-ease), visibility 0.25s;
  backdrop-filter: blur(12px);
}

.buddy-hud-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.buddy-hud-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.buddy-hud-panel-head h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
}

.buddy-hud-panel-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
}

.buddy-hud-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.buddy-hud-stat-card {
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  text-align: center;
}

.buddy-hud-stat-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
}

.buddy-hud-stat-card span {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.buddy-badge-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
  min-height: 1.5rem;
}

.buddy-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 8px;
  background: var(--primary-soft);
  font-size: 0.95rem;
  cursor: default;
  transition: transform 0.2s var(--buddy-ease);
}

.buddy-badge:hover {
  transform: scale(1.12);
}

.buddy-badge-empty {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.buddy-badge-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.45rem;
  max-height: 200px;
  overflow-y: auto;
}

.buddy-badge-card {
  padding: 0.5rem 0.55rem;
  border-radius: 10px;
  border: 1px dashed var(--border);
  opacity: 0.55;
  font-size: 0.72rem;
  line-height: 1.35;
}

.buddy-badge-card.is-earned {
  opacity: 1;
  border-style: solid;
  background: var(--primary-soft);
}

.buddy-badge-card-icon {
  display: block;
  font-size: 1.1rem;
  margin-bottom: 0.15rem;
}

.buddy-badge-card strong {
  display: block;
  font-size: 0.75rem;
}

.buddy-badge-card small {
  color: var(--text-muted);
}

/* XP & badge toasts */
.buddy-xp-toast,
.buddy-badge-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--buddy-ease), transform 0.3s var(--buddy-ease);
}

.buddy-xp-toast.is-visible,
.buddy-badge-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.buddy-badge-toast {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  border-radius: var(--buddy-radius);
  padding: 0.75rem 1rem;
}

.buddy-badge-toast-icon {
  font-size: 1.5rem;
}

/* Welcome modal */
.buddy-welcome-panel {
  max-width: 400px;
  text-align: center;
}

.buddy-welcome-panel h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.buddy-welcome-panel p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.buddy-welcome-form {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.buddy-welcome-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  text-align: center;
}

.buddy-welcome-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.buddy-welcome-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Chat message entrance */
.message-enter {
  animation: buddyMsgIn 0.35s var(--buddy-ease) both;
}

@keyframes buddyMsgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* CORA thinking — animated dots label */
.cora-thinking-label {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
}

.cora-thinking-dots::after {
  content: "";
  animation: buddyDots 1.4s steps(4, end) infinite;
}

@keyframes buddyDots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
}

/* Hero polish */
.hero-badge {
  animation: buddyPulse 3s ease-in-out infinite;
}

@keyframes buddyPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--buddy-glow); }
  50% { box-shadow: 0 0 0 6px transparent; }
}

.hero-cta .btn {
  min-width: 10rem;
}

/* CORA welcome personalized */
.cora-welcome-greeting {
  font-size: 1.05rem;
  margin-bottom: 0.65rem;
  color: var(--text);
}

.cora-welcome-memory {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  margin-bottom: 0.85rem;
}

/* Mobile HUD */
@media (max-width: 768px) {
  .buddy-hud-name {
    display: none;
  }

  .buddy-hud-toggle {
    padding: 0.3rem 0.5rem;
  }

  .buddy-hud-panel {
    right: 0.75rem;
  }
}

@media (max-width: 480px) {
  .buddy-hud-stat span:not(.buddy-hud-icon) {
    font-size: 0.72rem;
  }
}