/* TutorIngles — components.css (NeumorphGlass Apple)
   Componentes reutilizables: botones, cards, badges, modals, inputs, spinners */

/* ── BOTONES ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
  width: 100%;
  text-transform: uppercase;
}

.btn-primary {
  background: linear-gradient(145deg, #1a8fff, #006fe0);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  box-shadow: 4px 4px 12px rgba(0, 122, 255, 0.40), -2px -2px 8px rgba(255, 255, 255, 0.90);
  padding: 14px 28px;
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-primary:hover  { background: linear-gradient(145deg, #2a9fff, #0077ee); box-shadow: 6px 6px 16px rgba(0,122,255,0.50), -3px -3px 10px rgba(255,255,255,0.95); }
.btn-primary:active { box-shadow: var(--shadow-inset); transform: scale(0.97); }

/* Alias -- nombre alternativo que usa el spec */
.btn--primary { }
.btn--primary { background: linear-gradient(145deg, #1a8fff, #006fe0); color: #fff; border: none; border-radius: var(--radius); box-shadow: 4px 4px 12px rgba(0, 122, 255, 0.40), -2px -2px 8px rgba(255, 255, 255, 0.90); padding: 14px 28px; font-weight: 600; }
.btn--primary:active { box-shadow: var(--shadow-inset); transform: scale(0.97); }

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(0,122,255,0.40);
  box-shadow: var(--shadow-raised);
}

.btn-ghost:hover  { background: var(--accent-dim); }
.btn-ghost:active { transform: scale(0.97); }

.btn-subtle {
  background: var(--surface-raised);
  color: var(--text-dim);
  border: 1px solid rgba(255,255,255,0.60);
  box-shadow: var(--shadow-raised);
}

.btn-subtle:hover  { box-shadow: var(--shadow-float); }
.btn-subtle:active { box-shadow: var(--shadow-inset); transform: scale(0.97); }

.btn-danger {
  background: rgba(255,69,58,0.12);
  color: var(--danger);
  border: 1px solid rgba(255,69,58,0.30);
  box-shadow: var(--shadow-raised);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.6rem;
  letter-spacing: 1.5px;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  font-size: 1rem;
}

/* ── CARDS ─────────────────────────────────────────────── */
.card {
  background: var(--surface-glass);
  border: var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-raised);
}

/* Glass Card — principal componente visual */
.glass-card {
  background: var(--surface-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: var(--border);
  border-top: 1px solid var(--rim-light);
  border-bottom: 1px solid var(--rim-bottom);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float), inset 0 1px 0 rgba(255,255,255,0.65);
  padding: 20px;
  margin-bottom: 12px;
}

/* Glass Card con acento de color */
.glass-card-accent {
  background: linear-gradient(135deg, rgba(0,122,255,0.08) 0%, var(--surface-glass) 100%);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: var(--border);
  border-top: 1px solid var(--rim-light);
  border-bottom: 1px solid var(--rim-bottom);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float), inset 0 1px 0 rgba(255,255,255,0.65);
  padding: 20px;
  margin-bottom: 12px;
}

/* NM Card — neumórfico raised */
.nm-card {
  background: var(--surface-raised);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-raised);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.70);
  margin-bottom: 12px;
}

/* NM Card inset (hundido) */
.nm-card-inset {
  background: var(--surface-inset);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-inset);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.40);
  margin-bottom: 12px;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 3px;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* ── FLASH CARD (vocab SRS) ────────────────────────────── */
.flash-card {
  background: var(--surface-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: var(--border);
  border-top: 1px solid var(--rim-light);
  border-bottom: 1px solid var(--rim-bottom);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  padding: 28px 20px;
  margin-bottom: 16px;
  text-align: center;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
  perspective: 1000px;
}

.flash-card:active { transform: scale(0.98); box-shadow: var(--shadow-inset); }
.flash-card.flipped { border-color: rgba(0,122,255,0.40); box-shadow: var(--shadow-float), 0 0 20px rgba(0,122,255,0.15); }

.flash-word {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
}

.flash-translation {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 500;
}

.flash-example {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  max-width: 90%;
  line-height: 1.6;
}

.flash-level-badge {
  position: absolute;
  top: 12px;
  right: 12px;
}

/* ── BADGES ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 1.5px;
  font-weight: 700;
  background: rgba(255,255,255,0.60);
  color: var(--text-dim);
  border: 1px solid rgba(255,255,255,0.80);
  box-shadow: 2px 2px 6px rgba(156,190,214,0.30), -1px -1px 4px rgba(255,255,255,0.80);
}

.badge-level { background: var(--accent-dim); color: var(--accent); border-color: rgba(0,122,255,0.30); }

/* Colores de nivel CEFR */
.badge-a2 { background: rgba(255,159,10,0.15); color: var(--level-a2); border: 1px solid rgba(255,159,10,0.30); border-radius: 20px; padding: 4px 12px; font-size: 12px; font-weight: 700; }
.badge-b1 { background: rgba(48,209,88,0.15);  color: var(--level-b1); border: 1px solid rgba(48,209,88,0.30);  border-radius: 20px; padding: 4px 12px; font-size: 12px; font-weight: 700; }
.badge-b2 { background: rgba(10,132,255,0.15); color: var(--level-b2); border: 1px solid rgba(10,132,255,0.30); border-radius: 20px; padding: 4px 12px; font-size: 12px; font-weight: 700; }
.badge-c1 { background: rgba(191,90,242,0.15); color: var(--level-c1); border: 1px solid rgba(191,90,242,0.30); border-radius: 20px; padding: 4px 12px; font-size: 12px; font-weight: 700; }

.badge-success { background: rgba(48,209,88,0.15);  color: var(--success); border-color: rgba(48,209,88,0.30); }
.badge-danger  { background: rgba(255,69,58,0.12);  color: var(--danger);  border-color: rgba(255,69,58,0.30); }

/* ── RANK BADGE ────────────────────────────────────────── */
.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--surface-raised);
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.65);
  box-shadow: var(--shadow-raised);
}

.rank-badge.rank-s { background: var(--accent-dim);             color: var(--accent);  border-color: rgba(0,122,255,0.30); }
.rank-badge.rank-a { background: rgba(48,209,88,0.15);           color: var(--success); border-color: rgba(48,209,88,0.30); }
.rank-badge.rank-b { background: rgba(255,159,10,0.15);          color: var(--warning); border-color: rgba(255,159,10,0.30); }
.rank-badge.rank-c { background: rgba(90,200,250,0.15);          color: var(--info);    border-color: rgba(90,200,250,0.30); }
.rank-badge.rank-d { background: var(--surface-raised);          color: var(--text-muted);  border-color: rgba(156,190,214,0.35); }

/* ── STREAK CHIP ───────────────────────────────────────── */
.streak-chip {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--warning);
  background: rgba(255,159,10,0.12);
  border: 1px solid rgba(255,159,10,0.25);
  border-radius: 20px;
  padding: 3px 9px;
  letter-spacing: 1px;
  box-shadow: var(--shadow-raised);
}

/* ── PROGRESS BAR con shimmer ──────────────────────────── */
.progress-bar {
  width: 100%;
  height: 10px;
  background: var(--surface-inset);
  box-shadow: var(--shadow-inset);
  border-radius: 100px;
  overflow: hidden;
}

.progress-fill {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  height: 100%;
  border-radius: 100px;
  box-shadow: 0 0 12px rgba(0, 122, 255, 0.50);
  position: relative;
  transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.55), transparent);
  animation: shimmer 2s infinite;
}

.progress-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-top: 5px;
  text-align: right;
}

/* ── INPUTS / FIELDS ───────────────────────────────────── */
.field { margin-bottom: 12px; }

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
}

.field-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface-inset);
  border: 1px solid rgba(255,255,255,0.60);
  box-shadow: var(--shadow-inset);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field-input:focus {
  border-color: rgba(0,122,255,0.50);
  box-shadow: var(--shadow-inset), 0 0 0 3px var(--accent-dim);
}

.field-input::placeholder { color: var(--text-muted); }

textarea.field-input {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}

/* ── MODAL ─────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(180,210,230,0.35);
  backdrop-filter: blur(8px) saturate(150%);
  -webkit-backdrop-filter: blur(8px) saturate(150%);
  z-index: 500;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.modal {
  width: 100%;
  max-width: 480px;
  background: var(--surface-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: var(--border);
  border-top: 1px solid var(--rim-light);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: var(--shadow-float);
  padding: 24px 20px calc(24px + var(--safe-bottom));
  animation: slideUp 0.3s cubic-bezier(.4,0,.2,1);
}

.modal-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--text-dim);
  margin-bottom: 20px;
  text-align: center;
  text-transform: uppercase;
}

.modal-handle {
  width: 36px;
  height: 4px;
  background: rgba(156,190,214,0.40);
  border-radius: 2px;
  margin: 0 auto 18px;
  box-shadow: var(--shadow-inset);
}

/* ── SPINNER ───────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(156,190,214,0.35);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── EMPTY STATE ───────────────────────────────────────── */
.empty-state {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ── QUICK GRID (HOY: accesos rápidos) ────────────────── */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.quick-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 14px 6px;
  background: var(--surface-raised);
  border: 1px solid rgba(255,255,255,0.70);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 1px;
  color: var(--text-dim);
  box-shadow: var(--shadow-raised);
}

.quick-btn:hover  { box-shadow: var(--shadow-float); color: var(--accent); }
.quick-btn:active { box-shadow: var(--shadow-inset); transform: scale(0.95); }

.quick-icon { font-size: 1.4rem; }

/* ── GOAL ROW (HOY: metas del día) ────────────────────── */
.goal-row { display: flex; flex-direction: column; gap: 10px; }

.goal-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--surface-raised);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.65);
  box-shadow: var(--shadow-raised);
  transition: box-shadow 0.2s;
}

.goal-item.done { border-color: rgba(48,209,88,0.40); box-shadow: var(--shadow-raised), 0 0 0 1px rgba(48,209,88,0.20); }

.goal-icon { font-size: 1.2rem; flex-shrink: 0; }

.goal-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.goal-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 500;
}

.goal-count {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  margin-top: 1px;
}

.goal-check {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(156,190,214,0.40);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all 0.2s;
  box-shadow: var(--shadow-inset);
}

.goal-item.done .goal-check {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 0 8px rgba(48,209,88,0.40);
}

/* ── STREAK WEEK DOTS ──────────────────────────────────── */
.streak-week {
  display: flex;
  justify-content: space-around;
  gap: 4px;
}

.streak-day-dot {
  flex: 1;
  aspect-ratio: 1;
  max-width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface-raised);
  border: 1px solid rgba(255,255,255,0.65);
  box-shadow: var(--shadow-raised);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-muted);
  transition: all 0.2s;
}

.streak-day-dot.done    { background: var(--accent-dim); border-color: rgba(0,122,255,0.40); color: var(--accent); box-shadow: var(--shadow-raised), 0 0 8px rgba(0,122,255,0.20); }
.streak-day-dot.today   { border-color: rgba(156,190,214,0.60); color: var(--text-dim); box-shadow: var(--shadow-float); }
.streak-day-dot.partial { background: rgba(255,159,10,0.10); border-color: rgba(255,159,10,0.40); color: var(--warning); }

/* ── REVIEW BUTTONS (SRS) ──────────────────────────────── */
.review-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.btn-correct {
  background: rgba(48,209,88,0.12);
  color: var(--success);
  border: 1px solid rgba(48,209,88,0.30);
  padding: 14px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-raised);
}

.btn-correct:hover  { box-shadow: var(--shadow-float); }
.btn-correct:active { box-shadow: var(--shadow-inset); transform: scale(0.97); }

.btn-wrong {
  background: rgba(255,69,58,0.10);
  color: var(--danger);
  border: 1px solid rgba(255,69,58,0.30);
  padding: 14px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-raised);
}

.btn-wrong:hover  { box-shadow: var(--shadow-float); }
.btn-wrong:active { box-shadow: var(--shadow-inset); transform: scale(0.97); }

/* ── SCORE CHART (Exam / Progress) ────────────────────── */
.score-section {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.score-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  flex: 1;
  min-width: 80px;
}

.score-bar-wrap {
  flex: 2;
  height: 8px;
  background: var(--surface-inset);
  box-shadow: var(--shadow-inset);
  border-radius: 100px;
  overflow: hidden;
}

.score-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-3), var(--accent));
  border-radius: 100px;
  transition: width 0.5s ease;
  box-shadow: 0 0 8px rgba(0,122,255,0.35);
}

.score-pct {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--accent);
  min-width: 34px;
  text-align: right;
}