/* DS4K Floating Tutor — bottom-right everyday math chat */
#ds4k-tutor-root {
  --tutor-orange: #f59e0b;
  --tutor-amber: #fbbf24;
  --tutor-ink: #1f2937;
  --tutor-muted: #6b7280;
  --tutor-panel: #fffdf8;
  --tutor-border: #f3e8c8;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  z-index: 9999;
  position: relative;
}

.ds4k-tutor-launcher {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 9999;
}

.ds4k-tutor-tooltip {
  position: absolute;
  right: 0;
  bottom: 4.75rem;
  background: #fff;
  color: var(--tutor-ink);
  border: 1px solid var(--tutor-border);
  border-radius: 0.75rem;
  padding: 0.55rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.35;
  white-space: nowrap;
  box-shadow: 0 10px 30px rgba(31, 41, 55, 0.12);
  animation: ds4k-tutor-float 3s ease-in-out infinite;
}

.ds4k-tutor-fab {
  width: 4rem;
  height: 4rem;
  border: none;
  border-radius: 999px;
  font-size: 1.75rem;
  cursor: pointer;
  background: linear-gradient(145deg, #fbbf24, #ea580c 55%, #c2410c);
  box-shadow: 0 12px 28px rgba(194, 65, 12, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ds4k-tutor-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 16px 32px rgba(194, 65, 12, 0.4);
}

.ds4k-tutor-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(17, 24, 39, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.ds4k-tutor-modal,
.ds4k-tutor-panel {
  background: var(--tutor-panel);
  border: 1px solid var(--tutor-border);
  border-radius: 1.25rem;
  box-shadow: 0 24px 60px rgba(31, 41, 55, 0.22);
  position: relative;
}

.ds4k-tutor-modal {
  width: min(24rem, 100%);
  padding: 1.75rem 1.5rem 1.5rem;
  text-align: center;
}

.ds4k-tutor-modal h2 {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.35rem;
  color: var(--tutor-ink);
}

.ds4k-tutor-modal > p {
  margin: 0 0 1rem;
  color: var(--tutor-muted);
  font-size: 0.95rem;
}

.ds4k-tutor-emoji {
  font-size: 3rem;
  line-height: 1;
}

.ds4k-tutor-bullets {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  text-align: left;
  display: grid;
  gap: 0.55rem;
}

.ds4k-tutor-bullets li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--tutor-ink);
  font-size: 0.92rem;
}

.ds4k-tutor-bullets span {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff7ed;
  color: #c2410c;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.ds4k-tutor-age {
  display: grid;
  gap: 0.35rem;
  text-align: left;
  font-size: 0.85rem;
  color: var(--tutor-muted);
  margin-bottom: 1rem;
}

.ds4k-tutor-age select {
  border: 1px solid #e5e7eb;
  border-radius: 0.65rem;
  padding: 0.55rem 0.7rem;
  font: inherit;
  color: var(--tutor-ink);
  background: #fff;
}

.ds4k-tutor-primary {
  width: 100%;
  border: none;
  border-radius: 0.8rem;
  padding: 0.8rem 1rem;
  font: inherit;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(135deg, #f59e0b, #ea580c);
}

.ds4k-tutor-primary:hover {
  filter: brightness(1.05);
}

.ds4k-tutor-close {
  position: absolute;
  top: 0.65rem;
  right: 0.75rem;
  border: none;
  background: transparent;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--tutor-muted);
  cursor: pointer;
}

.ds4k-tutor-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 10000;
  width: min(22rem, calc(100vw - 1.5rem));
  overflow: hidden;
  animation: ds4k-tutor-pop 0.28s ease;
}

.ds4k-tutor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: linear-gradient(90deg, #fff7ed, #ffedd5);
  border-bottom: 1px solid var(--tutor-border);
}

.ds4k-tutor-header > div {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--tutor-ink);
}

.ds4k-tutor-header em {
  font-style: normal;
  font-weight: 600;
  color: #c2410c;
}

.ds4k-tutor-header .ds4k-tutor-close {
  position: static;
}

.ds4k-tutor-body {
  padding: 1rem 1rem 1.1rem;
  min-height: 22rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.ds4k-tutor-bot-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.55rem;
  align-items: start;
}

.ds4k-tutor-mascot {
  font-size: 1.9rem;
  animation: ds4k-tutor-float 2.2s ease-in-out infinite;
  margin-top: 0.2rem;
}

.ds4k-tutor-chat {
  max-height: 13.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding-right: 0.15rem;
}

.ds4k-tutor-msg {
  max-width: 100%;
  border-radius: 0.9rem;
  padding: 0.55rem 0.7rem;
  font-size: 0.84rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: keep-all;
}

.ds4k-tutor-msg.is-bot {
  background: linear-gradient(135deg, #fff7ed, #fffbeb);
  border: 1px solid #fed7aa;
  color: var(--tutor-ink);
  align-self: flex-start;
}

.ds4k-tutor-msg.is-user {
  background: #1f2937;
  color: #fff;
  align-self: flex-end;
}

.ds4k-tutor-msg.is-interim {
  opacity: 0.65;
  font-style: italic;
}

.ds4k-tutor-voice-hint {
  margin: 0 0 0.85rem;
  font-size: 0.75rem;
  color: var(--tutor-muted);
}

.ds4k-tutor-mic-hint {
  margin: 0;
  font-size: 0.75rem;
  color: var(--tutor-muted);
  text-align: center;
}

.ds4k-tutor-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
}

.ds4k-tutor-option {
  border: 2px solid #e5e7eb;
  border-radius: 0.85rem;
  background: #fff;
  padding: 0.65rem 0.4rem;
  cursor: pointer;
  display: grid;
  gap: 0.25rem;
  justify-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--tutor-ink);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.ds4k-tutor-option:hover {
  border-color: #fdba74;
  transform: translateY(-1px);
}

.ds4k-tutor-option.is-active {
  border-color: #ea580c;
  background: #fff7ed;
}

.ds4k-tutor-option-icon {
  font-size: 1.5rem;
}

.ds4k-tutor-mission {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}

.ds4k-tutor-mic {
  width: 4.5rem;
  height: 4.5rem;
  border: none;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(145deg, #fbbf24, #ea580c);
  box-shadow: 0 10px 24px rgba(234, 88, 12, 0.28);
}

.ds4k-tutor-mic.is-listening {
  background: linear-gradient(145deg, #34d399, #059669);
  animation: ds4k-tutor-pulse 0.9s ease-in-out infinite;
}

.ds4k-tutor-heard {
  margin: 0;
  font-size: 0.78rem;
  color: var(--tutor-muted);
}

.ds4k-tutor-text-fallback {
  display: flex;
  gap: 0.4rem;
  width: 100%;
}

.ds4k-tutor-text-fallback.is-soft {
  opacity: 0.95;
}

.ds4k-tutor-text-fallback input {
  flex: 1;
  border: 1px solid #e5e7eb;
  border-radius: 0.65rem;
  padding: 0.5rem 0.65rem;
  font: inherit;
  font-size: 0.85rem;
}

.ds4k-tutor-text-fallback button {
  border: none;
  border-radius: 0.65rem;
  padding: 0.5rem 0.75rem;
  background: #1f2937;
  color: #fff;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.ds4k-tutor-reflect {
  display: grid;
  gap: 0.65rem;
}

.ds4k-tutor-strengths,
.ds4k-tutor-parent {
  border-radius: 0.75rem;
  padding: 0.7rem 0.8rem;
  font-size: 0.8rem;
  line-height: 1.4;
}

.ds4k-tutor-strengths {
  background: #ecfdf5;
  border-left: 4px solid #10b981;
  color: #065f46;
}

.ds4k-tutor-parent {
  background: #eff6ff;
  border-left: 4px solid #3b82f6;
  color: #1e3a8a;
}

.ds4k-tutor-strengths ul {
  margin: 0.35rem 0 0;
  padding-left: 1rem;
}

.ds4k-tutor-parent p {
  margin: 0.35rem 0 0;
}

.ds4k-tutor-footer {
  margin-top: auto;
  display: grid;
  gap: 0.55rem;
}

.ds4k-tutor-sound {
  border: none;
  background: transparent;
  color: var(--tutor-muted);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  justify-self: center;
}

.ds4k-tutor-confetti {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 10001;
  overflow: hidden;
}

.ds4k-tutor-confetti span {
  position: absolute;
  top: -10px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  animation: ds4k-tutor-fall 1.4s ease-in forwards;
}

@keyframes ds4k-tutor-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes ds4k-tutor-pop {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes ds4k-tutor-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.12);
  }
}

@keyframes ds4k-tutor-fall {
  to {
    transform: translateY(100vh) rotate(240deg);
    opacity: 0;
  }
}

@media (max-width: 480px) {
  .ds4k-tutor-launcher,
  .ds4k-tutor-panel {
    right: 0.75rem;
    bottom: 0.75rem;
  }

  .ds4k-tutor-panel {
    width: calc(100vw - 1.5rem);
  }

  .ds4k-tutor-tooltip {
    white-space: normal;
    width: 9.5rem;
    text-align: right;
  }
}