/* ─────────────────────────────────────────────────────────
   components.css — All reusable component styles
   ───────────────────────────────────────────────────────── */

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}

.btn:hover::after { background: rgba(255,255,255,0.07); }
.btn:active::after { background: rgba(255,255,255,0.15); }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background: var(--clr-primary);
  color: var(--bg-deep);
  box-shadow: var(--glow-primary);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(0,212,255,0.5), 0 0 48px rgba(0,212,255,0.2);
}

/* Secondary (purple) */
.btn-secondary {
  background: var(--clr-secondary);
  color: white;
  box-shadow: var(--glow-secondary);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(168,85,247,0.5);
}

/* Accent (gold) */
.btn-accent {
  background: var(--clr-accent);
  color: var(--bg-deep);
  box-shadow: var(--glow-accent);
}
.btn-accent:hover { transform: translateY(-2px); }

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
}
.btn-ghost:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

/* Icon button */
.btn-icon {
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
  font-size: 1rem;
}
.btn-icon:hover { color: var(--clr-primary); border-color: var(--clr-primary); }

/* ==================== LANG SWITCHER ==================== */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2px;
}
.lang-btn {
  background: transparent;
  border: none;
  color: var(--clr-text-muted);
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: var(--radius-md);
  transition: all 150ms ease;
}
.lang-btn:hover { color: var(--clr-text); background: rgba(255,255,255,0.06); }
.lang-btn.active { background: var(--clr-primary); color: var(--bg-deep); }

/* Sizes */
.btn-sm { padding: var(--sp-2) var(--sp-4); font-size: 0.85rem; }
.btn-lg { padding: var(--sp-4) var(--sp-10); font-size: 1.1rem; }

/* ==================== MODAL ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-6);
  animation: fadeIn var(--transition-base) ease both;
}

.modal-overlay.hidden { display: none; }

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--clr-border-mid);
  border-radius: var(--radius-xl);
  padding: var(--sp-8);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5), var(--glow-primary);
  animation: slideUp var(--transition-slow) ease both;
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--sp-6);
}

.modal-title {
  font-size: 1.4rem;
  color: var(--clr-primary);
}

.modal-close {
  background: var(--bg-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  border-radius: var(--radius-md);
  padding: var(--sp-2);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 32px;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover { color: var(--clr-error); border-color: var(--clr-error); }

/* ==================== DIALOGUE BOX ==================== */
.dialogue-box {
  background: var(--bg-card);
  border: 1px solid var(--clr-border-mid);
  border-radius: var(--radius-xl);
  padding: var(--sp-5) var(--sp-6);
  position: relative;
  box-shadow: var(--glow-primary);
  animation: slideUp var(--transition-base) ease both;
}

.dialogue-box__header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
}

.dialogue-portrait {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-secondary), var(--clr-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  border: 2px solid var(--clr-border-mid);
}

.dialogue-portrait[data-char="syn"]      { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.dialogue-portrait[data-char="piper"]    { background: linear-gradient(135deg, #0ea5e9, #06b6d4); }
.dialogue-portrait[data-char="hexa"]     { background: linear-gradient(135deg, #ec4899, #a855f7); }
.dialogue-portrait[data-char="tunnelfox"]{ background: linear-gradient(135deg, #f59e0b, #ef4444); }
.dialogue-portrait[data-char="uvsprite"] { background: linear-gradient(135deg, #10b981, #3b82f6); }
.dialogue-portrait[data-char="portalowl"]{ background: linear-gradient(135deg, #8b5cf6, #06b6d4); }

.dialogue-speaker-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--clr-primary);
}
.dialogue-speaker-role {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
}

.dialogue-text {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--clr-text);
  min-height: 3em;
}

.dialogue-text .cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--clr-primary);
  margin-left: 1px;
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

.dialogue-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--sp-4);
  gap: var(--sp-3);
}

.dialogue-progress {
  display: flex;
  gap: 4px;
  align-items: center;
}

.dialogue-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-text-dim);
  transition: background var(--transition-base);
}
.dialogue-dot.active { background: var(--clr-primary); }

/* ==================== TERMINAL PANEL ==================== */
.terminal-panel {
  background: var(--term-bg);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  box-shadow: var(--glow-primary), inset 0 0 40px rgba(0,212,255,0.03);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  background: rgba(0,212,255,0.06);
  border-bottom: 1px solid rgba(0,212,255,0.12);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.terminal-dot:nth-child(1) { background: #ff5f57; }
.terminal-dot:nth-child(2) { background: #febc2e; }
.terminal-dot:nth-child(3) { background: #28c840; }

.terminal-title {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  flex: 1;
  text-align: center;
}

.terminal-actions {
  display: flex;
  gap: var(--sp-2);
}

.terminal-body {
  padding: var(--sp-4);
  min-height: 200px;
  max-height: 340px;
  overflow-y: auto;
  line-height: 1.55;
}

.terminal-line {
  margin-bottom: 3px;
}

.terminal-line.prompt::before {
  content: '→ ';
  color: var(--term-prompt);
}

.terminal-line.response::before {
  content: '← ';
  color: var(--term-text);
}

.terminal-line.error   { color: var(--term-error); }
.terminal-line.warning { color: var(--term-warn); }
.terminal-line.info    { color: var(--term-info); }
.terminal-line.success { color: var(--term-text); }
.terminal-line.muted   { color: var(--term-muted); }
.terminal-line.json    { color: #dfe6e9; }

.terminal-line span.keyword  { color: #6c5ce7; }
.terminal-line span.string   { color: #a8ff78; }
.terminal-line span.number   { color: #fd79a8; }
.terminal-line span.property { color: var(--term-prompt); }

/* ==================== QUIZ PANEL ==================== */
.quiz-panel {
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
}

.quiz-question {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-5);
  line-height: 1.5;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.quiz-option {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: left;
  font-size: 0.95rem;
  color: var(--clr-text);
}

.quiz-option:hover:not(:disabled):not(.answered) {
  border-color: var(--clr-primary);
  background: rgba(0,212,255,0.06);
}

.quiz-option.correct {
  border-color: var(--clr-success);
  background: rgba(16,185,129,0.1);
  color: var(--clr-success);
}

.quiz-option.wrong {
  border-color: var(--clr-error);
  background: rgba(239,68,68,0.08);
  color: var(--clr-error);
}

.quiz-option.revealed.correct {
  border-color: var(--clr-success);
  background: rgba(16,185,129,0.08);
}

.quiz-option:disabled { cursor: not-allowed; }

.quiz-option-letter {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--clr-text-muted);
}

.quiz-option.correct .quiz-option-letter { background: var(--clr-success); color: white; border-color: var(--clr-success); }
.quiz-option.wrong   .quiz-option-letter { background: var(--clr-error); color: white; border-color: var(--clr-error); }

.quiz-feedback {
  margin-top: var(--sp-4);
  padding: var(--sp-4);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.6;
  display: none;
}

.quiz-feedback.show { display: block; animation: slideUp var(--transition-base) ease both; }
.quiz-feedback.correct { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); color: var(--clr-success); }
.quiz-feedback.wrong   { background: rgba(239,68,68,0.07); border: 1px solid rgba(239,68,68,0.3); color: #fca5a5; }

.quiz-score {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--clr-border);
  font-size: 0.9rem;
  color: var(--clr-text-muted);
}

/* ==================== CODE PANEL ==================== */
.code-panel {
  background: var(--term-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--clr-border);
}

.code-panel__lang {
  font-size: 0.75rem;
  color: var(--clr-secondary);
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.code-panel__copy {
  font-size: 0.75rem;
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.code-panel__copy:hover { color: var(--clr-primary); border-color: var(--clr-primary); }
.code-panel__copy.copied { color: var(--clr-success); border-color: var(--clr-success); }

.code-panel__body {
  padding: var(--sp-5) var(--sp-6);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
  color: #dfe6e9;
}

.code-panel__body .py-kw     { color: #6c5ce7; }
.code-panel__body .py-fn     { color: #00b894; }
.code-panel__body .py-str    { color: #a8ff78; }
.code-panel__body .py-num    { color: #fd79a8; }
.code-panel__body .py-dec    { color: var(--clr-accent); }
.code-panel__body .py-cmt    { color: #636e72; font-style: italic; }
.code-panel__body .py-param  { color: var(--term-prompt); }
.code-panel__body .py-type   { color: #74b9ff; }

.code-panel__explain {
  padding: var(--sp-4) var(--sp-5);
  background: rgba(168,85,247,0.06);
  border-top: 1px solid rgba(168,85,247,0.15);
  font-size: 0.87rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ==================== CHAPTER CARD ==================== */
.chapter-card {
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.chapter-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.06), rgba(168,85,247,0.06));
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.chapter-card:hover:not(.locked)::before { opacity: 1; }
.chapter-card:hover:not(.locked) {
  border-color: var(--clr-border-mid);
  transform: translateY(-3px);
  box-shadow: var(--glow-primary);
}

.chapter-card.locked {
  cursor: not-allowed;
  opacity: 0.55;
  filter: saturate(0.3);
}

.chapter-card.completed {
  border-color: rgba(16,185,129,0.4);
}

.chapter-card.completed::after {
  content: '✓';
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  width: 28px;
  height: 28px;
  background: var(--clr-success);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.chapter-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--sp-3);
}

.chapter-card__number {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-dim);
  margin-bottom: var(--sp-1);
}

.chapter-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: var(--sp-2);
}

.chapter-card__desc {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
}

.chapter-card__lock {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  font-size: 1.2rem;
  opacity: 0.5;
}

.chapter-card__xp {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--sp-3);
  font-size: 0.78rem;
  color: var(--clr-accent);
  background: rgba(245,158,11,0.1);
  padding: 2px 8px;
  border-radius: var(--radius-xl);
}

/* ==================== PROGRESS BAR ==================== */
.progress-bar-wrap {
  width: 100%;
}

.progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-2);
}

.progress-bar-track {
  height: 8px;
  background: var(--bg-surface);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--clr-border);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px rgba(0,212,255,0.4);
}

/* ==================== TOAST ==================== */
.toast-container {
  position: fixed;
  top: var(--sp-6);
  right: var(--sp-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-size: 0.9rem;
  max-width: 340px;
  pointer-events: all;
  animation: toastIn 0.3s ease both;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.toast.removing { animation: toastOut 0.3s ease both; }
.toast.success { border-color: rgba(16,185,129,0.5); background: rgba(16,185,129,0.1); }
.toast.error   { border-color: rgba(239,68,68,0.5);  background: rgba(239,68,68,0.1); }
.toast.info    { border-color: rgba(0,212,255,0.5);  background: rgba(0,212,255,0.08); }
.toast.achievement {
  border-color: rgba(245,158,11,0.5);
  background: rgba(245,158,11,0.1);
  box-shadow: var(--glow-accent);
}

.toast__icon { font-size: 1.3rem; flex-shrink: 0; }
.toast__body { flex: 1; }
.toast__title { font-weight: 700; font-size: 0.85rem; }
.toast__msg { font-size: 0.82rem; color: var(--clr-text-muted); margin-top: 2px; }

/* ==================== ACHIEVEMENT BADGE ==================== */
.badge-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3);
  background: var(--bg-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  min-width: 90px;
  text-align: center;
  transition: all var(--transition-base);
}

.badge.unlocked {
  border-color: rgba(245,158,11,0.4);
  background: rgba(245,158,11,0.06);
  box-shadow: var(--glow-accent);
}

.badge.locked { filter: grayscale(1); opacity: 0.4; }

.badge__icon { font-size: 1.8rem; }
.badge__name { font-size: 0.72rem; font-weight: 600; color: var(--clr-text-muted); }
.badge.unlocked .badge__name { color: var(--clr-accent); }

/* ==================== PUZZLE AREA ==================== */
.puzzle-area {
  background: var(--bg-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
  position: relative;
}

.puzzle-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: var(--sp-2);
}

.puzzle-instructions {
  font-size: 0.87rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-5);
  line-height: 1.5;
}

.puzzle-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  align-items: start;
}

.puzzle-column-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-dim);
  margin-bottom: var(--sp-3);
}

.puzzle-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: var(--sp-3);
  font-size: 0.9rem;
}

.puzzle-item:hover:not(.matched):not(.incorrect) {
  border-color: var(--clr-primary);
  background: rgba(0,212,255,0.05);
}

.puzzle-item.selected {
  border-color: var(--clr-primary);
  background: rgba(0,212,255,0.1);
  box-shadow: var(--glow-primary);
}

.puzzle-item.matched {
  border-color: var(--clr-success);
  background: rgba(16,185,129,0.1);
  cursor: default;
  color: var(--clr-success);
}

.puzzle-item.incorrect {
  border-color: var(--clr-error);
  background: rgba(239,68,68,0.08);
  animation: shake 0.4s ease;
}

.puzzle-status {
  margin-top: var(--sp-4);
  padding: var(--sp-3);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  text-align: center;
  display: none;
}

.puzzle-status.show { display: block; animation: slideUp var(--transition-base) ease both; }
.puzzle-status.success { background: rgba(16,185,129,0.1); color: var(--clr-success); border: 1px solid rgba(16,185,129,0.3); }
.puzzle-status.error   { background: rgba(239,68,68,0.08); color: var(--clr-error); border: 1px solid rgba(239,68,68,0.3); }

/* Ordering puzzle */
.order-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.order-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  cursor: grab;
  transition: all var(--transition-base);
  font-size: 0.9rem;
}

.order-item:active { cursor: grabbing; }
.order-item.drag-over {
  border-color: var(--clr-primary);
  background: rgba(0,212,255,0.06);
}
.order-item.correct-pos { border-color: var(--clr-success); background: rgba(16,185,129,0.08); }

.order-handle { color: var(--clr-text-dim); font-size: 1rem; cursor: grab; }
.order-num { width: 24px; height: 24px; border-radius: 50%; background: var(--bg-surface); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; color: var(--clr-text-muted); flex-shrink: 0; }

/* Completion screen */
.completion-panel {
  text-align: center;
  padding: var(--sp-8);
  animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.completion-icon { font-size: 4rem; margin-bottom: var(--sp-4); }
.completion-xp {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.4);
  border-radius: var(--radius-xl);
  color: var(--clr-accent);
  font-weight: 700;
  font-size: 1.1rem;
  margin: var(--sp-4) auto;
}

/* Keyword highlight in quiz/content */
.highlight {
  color: var(--clr-accent);
  font-weight: 600;
}