/**
 * Shmoop AI Tutor Widget Styles
 * Floating chat widget — bottom-right, comic book / graphic novel design.
 * Supports: chat, quiz mode, panel resizing, fullscreen.
 */

/* ── Comic Book Design System Variables ── */
.shmoop-tutor-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#shmoop-tutor-request-actions:not(:empty) { padding: 8px 16px; }

#shmoop-tutor-clear {
  padding: 8px 16px;
  border: 0;
  background: #f8fafc;
  color: #334155;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

:root {
  --comic-blue: #2563eb;
  --comic-gold: #fbbf24;
  --comic-red: #ef4444;
  --comic-green: #22c55e;
  --comic-outline: 3px;
  --comic-shadow: 4px 4px 0px 0px rgba(0,0,0,1);
  --comic-shadow-sm: 2px 2px 0px 0px rgba(0,0,0,1);
  --comic-font-header: 'Bangers', cursive;
  --comic-font-accent: 'Permanent Marker', cursive;
}

/* ── Floating Button ── */
#shmoop-tutor-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: #2563eb;
  color: #fff;
  border: var(--comic-outline) solid black;
  border-radius: 12px;
  cursor: pointer;
  font-family: var(--comic-font-header);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: var(--comic-shadow);
  transition: transform 0.1s, box-shadow 0.1s;
  z-index: 99999;
  user-select: none;
}

#shmoop-tutor-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px 0px rgba(0,0,0,1);
}

.shmoop-tutor-icon {
  font-size: 20px;
  line-height: 1;
}

.shmoop-tutor-label {
  white-space: nowrap;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Chat Panel ── */
#shmoop-tutor-panel {
  box-sizing: border-box;
  max-width: calc(100vw - 48px);
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: var(--comic-outline) solid black;
  border-radius: 12px;
  box-shadow: var(--comic-shadow);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  z-index: 99999;
  overflow: hidden;
  transition: opacity 0.2s, transform 0.2s, width 0.3s ease, max-height 0.3s ease;
}

#shmoop-tutor-panel.shmoop-tutor-closed {
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
}

#shmoop-tutor-panel[hidden] {
  display: none;
}

#shmoop-tutor-btn:focus-visible,
#shmoop-tutor-panel button:focus-visible,
#shmoop-tutor-panel a:focus-visible {
  outline: 3px solid #111;
  outline-offset: 2px;
  box-shadow: 0 0 0 4px #fff;
}

#shmoop-tutor-panel.shmoop-tutor-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* ── Panel Sizes ── */
#shmoop-tutor-panel.shmoop-tutor-size-small {
  width: 380px;
  max-height: 560px;
}

#shmoop-tutor-panel.shmoop-tutor-size-medium {
  width: 520px;
  max-height: 70vh;
}

#shmoop-tutor-panel.shmoop-tutor-size-large {
  width: 700px;
  max-height: 85vh;
}

/* ── Fullscreen ── */
#shmoop-tutor-panel.shmoop-tutor-fullscreen {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100% !important;
  max-width: 100%;
  max-height: 100vh !important;
  border-radius: 0;
  z-index: 100000;
}

.shmoop-tutor-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99998;
  display: none;
}

.shmoop-tutor-backdrop.active {
  display: block;
}

/* ── Header ── */
.shmoop-tutor-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  background: linear-gradient(135deg, #2E3192 0%, #1d4ed8 100%);
  border-bottom: var(--comic-outline) solid black;
  color: #fff;
  flex-shrink: 0;
}

.shmoop-tutor-title {
  font-family: var(--comic-font-header);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.shmoop-tutor-context {
  font-family: var(--comic-font-accent);
  font-size: 13px;
  opacity: 0.8;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* ── Size Controls ── */
.shmoop-tutor-size-controls {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.shmoop-tutor-size-btn,
.shmoop-tutor-fullscreen-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255,255,255,0.4);
  font-family: var(--comic-font-accent);
  color: #fff;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.shmoop-tutor-size-btn:hover,
.shmoop-tutor-fullscreen-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.shmoop-tutor-size-btn.active {
  background: rgba(255, 255, 255, 0.4);
}

.shmoop-tutor-close {
  background: none;
  border: none;
  color: #fff;
  font-family: var(--comic-font-header);
  font-size: 22px;
  cursor: pointer;
  padding: 0 4px;
  opacity: 0.7;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.shmoop-tutor-close:hover {
  opacity: 1;
}

/* ── Messages ── */
.shmoop-tutor-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 0;
  max-height: 360px;
}

/* Allow messages to grow in larger panels */
#shmoop-tutor-panel.shmoop-tutor-size-medium .shmoop-tutor-messages,
#shmoop-tutor-panel.shmoop-tutor-size-large .shmoop-tutor-messages,
#shmoop-tutor-panel.shmoop-tutor-fullscreen .shmoop-tutor-messages {
  max-height: none;
}

.shmoop-tutor-msg {
  display: flex;
  max-width: 85%;
  margin-bottom: 4px;
}

.shmoop-tutor-msg-user {
  align-self: flex-end;
}

.shmoop-tutor-msg-assistant {
  align-self: flex-start;
}

.shmoop-tutor-msg-content {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.5;
  word-wrap: break-word;
}

.shmoop-tutor-msg-user .shmoop-tutor-msg-content {
  background: var(--comic-blue);
  color: #fff;
  border: var(--comic-outline) solid black;
  border-radius: 16px;
  border-bottom-right-radius: 4px;
  box-shadow: var(--comic-shadow-sm);
  position: relative;
}

.shmoop-tutor-msg-user .shmoop-tutor-msg-content::after {
  content: '';
  position: absolute;
  bottom: -12px;
  right: 16px;
  border-width: 12px 12px 0;
  border-style: solid;
  border-color: black transparent;
}

.shmoop-tutor-msg-user .shmoop-tutor-msg-content::before {
  content: '';
  position: absolute;
  bottom: -8px;
  right: 18px;
  border-width: 10px 10px 0;
  border-style: solid;
  border-color: var(--comic-blue) transparent;
  z-index: 1;
}

.shmoop-tutor-msg-assistant .shmoop-tutor-msg-content {
  background: #fff;
  color: #1e293b;
  border: var(--comic-outline) solid black;
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  box-shadow: var(--comic-shadow-sm);
  position: relative;
}

.shmoop-tutor-msg-assistant .shmoop-tutor-msg-content::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 16px;
  border-width: 12px 12px 0;
  border-style: solid;
  border-color: black transparent;
}

.shmoop-tutor-msg-assistant .shmoop-tutor-msg-content::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 18px;
  border-width: 10px 10px 0;
  border-style: solid;
  border-color: white transparent;
  z-index: 1;
}

.shmoop-tutor-msg-content code {
  background: rgba(0, 0, 0, 0.08);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
}

.shmoop-tutor-msg-content strong {
  font-weight: 600;
}

/* ── Page Navigation Links ── */
.shmoop-tutor-link {
  color: #2563eb;
  text-decoration: underline;
  text-decoration-color: rgba(37, 99, 235, 0.3);
  transition: text-decoration-color 0.15s;
}

.shmoop-tutor-link:hover {
  text-decoration-color: #2563eb;
}

.shmoop-tutor-msg-user .shmoop-tutor-link {
  color: #fff;
  text-decoration-color: #fff;
}

/* ── Suggestions ── */
.shmoop-tutor-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 16px 8px;
}

.shmoop-tutor-suggestion {
  background: var(--comic-gold);
  color: black;
  border: 2px solid black;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 13px;
  font-family: var(--comic-font-accent);
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: var(--comic-shadow-sm);
  transition: transform 0.1s, box-shadow 0.1s, background 0.15s;
}

.shmoop-tutor-suggestion:hover {
  background: #f59e0b;
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* ── Input Area ── */
.shmoop-tutor-input-area {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: var(--comic-outline) solid black;
  background: #f8fafc;
  flex-shrink: 0;
}

#shmoop-tutor-input {
  min-width: 0;
  flex: 1;
  border: 2px solid black;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

#shmoop-tutor-input:focus {
  border-color: var(--comic-blue);
  box-shadow: var(--comic-shadow-sm);
}

#shmoop-tutor-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid black;
  background: var(--comic-blue);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--comic-shadow-sm);
  transition: transform 0.1s, box-shadow 0.1s, background 0.15s;
}

#shmoop-tutor-send:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
  background: #1d4ed8;
}

#shmoop-tutor-send:disabled {
  background: #93c5fd;
  cursor: not-allowed;
}

/* ── Quiz Trigger Button ── */
.shmoop-tutor-quiz-trigger {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid black;
  background: var(--comic-gold);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--comic-shadow-sm);
  transition: transform 0.1s, box-shadow 0.1s, background 0.15s;
}

.shmoop-tutor-quiz-trigger:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
  background: #f59e0b;
}

/* ── Quiz UI ── */
.shmoop-tutor-quiz {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background-image: radial-gradient(rgba(0,0,0,0.04) 1px, transparent 0);
  background-size: 8px 8px;
}

.shmoop-tutor-quiz-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--comic-font-header);
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #64748b;
  padding-bottom: 8px;
  border-bottom: 1px solid #e2e8f0;
}

.shmoop-tutor-quiz-question {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: #1e293b;
  padding: 12px 0;
}

.shmoop-tutor-quiz-choices {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.shmoop-tutor-quiz-choice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: #f8fafc;
  border: var(--comic-outline) solid black;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s, border-color 0.15s, background-color 0.15s;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: none;
  line-height: 1.5;
  text-align: left;
  font-family: inherit;
  width: 100%;
  box-shadow: var(--comic-shadow-sm);
}

.shmoop-tutor-quiz-choice:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
  border-color: var(--comic-blue);
  background: #eff6ff;
}

.shmoop-tutor-quiz-choice.selected {
  border-color: var(--comic-blue);
  background: #eff6ff;
  box-shadow: var(--comic-shadow-sm);
  transform: none;
}

.shmoop-tutor-quiz-choice.correct {
  border-color: var(--comic-green);
  background: #f0fdf4;
}

.shmoop-tutor-quiz-choice.wrong {
  border-color: var(--comic-red);
  background: #fef2f2;
}

.shmoop-tutor-quiz-choice .choice-letter {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #e2e8f0;
  border: 2px solid black;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--comic-font-header);
  font-weight: 700;
  font-size: 16px;
  color: #475569;
  flex-shrink: 0;
}

.shmoop-tutor-quiz-choice.selected .choice-letter {
  background: #2563eb;
  color: #fff;
}

.shmoop-tutor-quiz-choice.correct .choice-letter {
  background: #166534;
  color: #fff;
}

.shmoop-tutor-quiz-choice.wrong .choice-letter {
  background: #991b1b;
  color: #fff;
}

.shmoop-tutor-quiz-explanation {
  padding: 16px 14px;
  padding-top: 16px;
  background: #fffbeb;
  border: var(--comic-outline) solid black;
  border-radius: 16px;
  box-shadow: var(--comic-shadow-sm);
  font-size: 13px;
  line-height: 1.6;
  color: #92400e;
  margin-top: 8px;
  position: relative;
}

.shmoop-tutor-quiz-actions {
  display: flex;
  gap: 8px;
  padding-top: 12px;
}

.shmoop-tutor-quiz-btn {
  flex: 1;
  padding: 10px 16px;
  border-radius: 8px;
  border: 2px solid black;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--comic-font-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: var(--comic-shadow-sm);
  transition: transform 0.1s, box-shadow 0.1s, background 0.15s;
}

.shmoop-tutor-quiz-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.shmoop-tutor-quiz-btn-primary {
  background: var(--comic-blue);
  color: #fff;
}

.shmoop-tutor-quiz-btn-primary:hover {
  background: #1d4ed8;
}

.shmoop-tutor-quiz-btn-primary:disabled {
  background: #93c5fd;
  cursor: not-allowed;
}

.shmoop-tutor-quiz-btn-secondary {
  background: #e2e8f0;
  color: #1e293b;
}

.shmoop-tutor-quiz-btn-secondary:hover {
  background: #cbd5e1;
}

/* ── Quiz Score Summary ── */
.shmoop-tutor-quiz-summary {
  text-align: center;
  padding: 24px 16px;
}

.shmoop-tutor-quiz-summary .score-big {
  font-family: var(--comic-font-header);
  font-size: 64px;
  font-weight: 800;
  color: var(--comic-blue);
  text-shadow: 3px 3px 0px black;
  -webkit-text-stroke: 2px black;
  margin-bottom: 8px;
}

.shmoop-tutor-quiz-summary .score-label {
  font-family: var(--comic-font-accent);
  font-size: 18px;
  color: #64748b;
  margin-bottom: 20px;
}

/* ── Mobile Responsive ── */
@media (max-width: 480px) {
  #shmoop-tutor-btn {
    bottom: 16px;
    right: 16px;
  }

  #shmoop-tutor-btn .shmoop-tutor-label {
    display: none;
  }

  #shmoop-tutor-panel.shmoop-tutor-size-small,
  #shmoop-tutor-panel.shmoop-tutor-size-medium,
  #shmoop-tutor-panel.shmoop-tutor-size-large {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    max-height: 80vh;
    max-height: 80dvh;
    border-radius: 16px 16px 0 0;
  }

  #shmoop-tutor-panel.shmoop-tutor-fullscreen {
    border-radius: 0;
    max-height: 100dvh !important;
  }

  .shmoop-tutor-input-area {
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }

  #shmoop-tutor-input { font-size: 16px; }

  .shmoop-tutor-size-controls .shmoop-tutor-size-btn {
    display: none;
  }
}

/* ── Scrollbar ── */
.shmoop-tutor-messages::-webkit-scrollbar,
.shmoop-tutor-quiz::-webkit-scrollbar {
  width: 6px;
}

.shmoop-tutor-messages::-webkit-scrollbar-track,
.shmoop-tutor-quiz::-webkit-scrollbar-track {
  background: transparent;
}

.shmoop-tutor-messages::-webkit-scrollbar-thumb,
.shmoop-tutor-quiz::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 3px;
}

/* ── Print: hide widget ── */
@media (prefers-reduced-motion: reduce) {
  #shmoop-tutor-panel, #shmoop-tutor-panel *, #shmoop-tutor-btn { transition: none; }
}

@media print {
  #shmoop-tutor-btn,
  #shmoop-tutor-panel,
  .shmoop-tutor-backdrop {
    display: none !important;
  }
}