/* FLASHCARDS 10 — Components */

/* === HEADER === */
.header {
  background: var(--vm-gradiente);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(255, 45, 51, 0.25);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.header-logo svg { height: 32px; width: 32px; flex-shrink: 0; }

.header-logo .logo-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  color: #fff;
  font-weight: 700;
}

.header-divider {
  width: 1px;
  height: 28px;
  background: rgba(255,255,255,0.3);
  margin: 0 16px;
}

.header-title {
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  letter-spacing: 0.5px;
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-btn {
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 10px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  font-size: 1.1rem;
  transition: background 0.2s;
}

.header-btn:hover { background: rgba(255,255,255,0.25); }

/* === FOOTER === */
.footer {
  background: #1A0A0A;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 16px;
  font-size: 0.8rem;
  margin-top: auto;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.25s;
  letter-spacing: 0.3px;
  text-decoration: none;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--vm-gradiente);
  color: #fff;
  width: 100%;
  padding: 16px;
  border-radius: var(--radius-md);
  border: none;
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  transition: all 0.25s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 45, 51, 0.35);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-otra {
  background: rgba(192, 57, 43, 0.08);
  border: 2px solid var(--color-otra);
  color: var(--color-otra);
}
.btn-otra:hover { background: var(--color-otra); color: #fff; box-shadow: 0 6px 20px rgba(192,57,43,0.3); }

.btn-dificil {
  background: rgba(224, 168, 48, 0.08);
  border: 2px solid var(--color-dificil);
  color: var(--color-dificil);
}
.btn-dificil:hover { background: var(--color-dificil); color: #fff; box-shadow: 0 6px 20px rgba(224,168,48,0.3); }

.btn-bien {
  background: rgba(15, 155, 88, 0.08);
  border: 2px solid var(--color-bien);
  color: var(--color-bien);
}
.btn-bien:hover { background: var(--color-bien); color: #fff; box-shadow: 0 6px 20px rgba(15,155,88,0.3); }

.btn-facil {
  background: rgba(44, 116, 179, 0.08);
  border: 2px solid var(--color-facil);
  color: var(--color-facil);
}
.btn-facil:hover { background: var(--color-facil); color: #fff; box-shadow: 0 6px 20px rgba(44,116,179,0.3); }

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
}
.btn-outline:hover { border-color: var(--vm-rojo); color: var(--vm-rojo); }

/* === PILLS === */
.pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.pill {
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 8px 18px;
  border-radius: 30px;
  border: 2px solid var(--vm-rojo);
  background: transparent;
  color: var(--vm-rojo);
  cursor: pointer;
  transition: all 0.2s;
}

.pill:hover, .pill.active {
  background: var(--vm-gradiente);
  color: #fff;
  border-color: transparent;
}

/* === CARDS === */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: 0 4px 20px var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px var(--shadow-heavy);
}

/* === STAT CARDS === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 20px 14px;
  text-align: center;
  box-shadow: 0 4px 16px var(--shadow);
  border: 1px solid var(--border);
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.15s; }
.stat-card:nth-child(3) { animation-delay: 0.2s; }
.stat-card:nth-child(4) { animation-delay: 0.25s; }

.stat-number {
  font-family: 'DM Sans', sans-serif;
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--vm-rojo);
  line-height: 1;
}

.stat-label {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 6px;
}

.badge-origen {
  background: var(--bg-secondary);
  color: var(--vm-naranja);
  border: 1px solid rgba(255, 98, 37, 0.25);
}

.badge-nueva { background: rgba(44,116,179,0.1); color: var(--badge-nueva); }
.badge-aprendiendo { background: rgba(255,98,37,0.1); color: var(--badge-aprendiendo); }
.badge-joven { background: rgba(15,155,88,0.1); color: var(--badge-joven); }
.badge-madura { background: rgba(15,155,88,0.15); color: var(--badge-madura); }
.badge-sanguijuela { background: rgba(192,57,43,0.1); color: var(--badge-sanguijuela); }

/* === INPUTS === */
.input, .select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color 0.2s;
}

.input:focus, .select:focus {
  outline: none;
  border-color: var(--vm-rojo);
}

/* === SEARCH === */
.search-bar { position: relative; }

.search-bar input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--vm-rojo);
  box-shadow: 0 4px 16px rgba(255, 45, 51, 0.1);
}

.search-bar .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1rem;
  pointer-events: none;
}

.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px var(--shadow-heavy);
  max-height: 350px;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 50;
  display: none;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.search-results.visible { display: block; }

.search-result-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 1.4;
}

.search-result-item:hover { background: var(--bg-secondary); }
.search-result-item:last-child { border-bottom: none; }

/* === PROGRESS BAR === */
.progress-bar {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--vm-gradiente);
  border-radius: 4px;
  transition: width 0.8s ease;
}

/* === TOAST === */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--card-bg);
  color: var(--text);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px var(--shadow-heavy);
  border: 1px solid var(--border);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  z-index: 200;
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* === TOGGLE SWITCH === */
.toggle {
  position: relative;
  width: 48px;
  height: 26px;
  display: inline-block;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border);
  border-radius: 26px;
  transition: 0.3s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.3s;
}

.toggle input:checked + .toggle-slider { background: var(--vm-rojo); }
.toggle input:checked + .toggle-slider::before { transform: translateX(22px); }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .header { padding: 0 16px; }
}

@media (max-width: 480px) {
  .header { height: 52px; padding: 0 12px; }
  .header-title { font-size: 0.85rem; }
  .header-divider { margin: 0 10px; }
  .stat-number { font-size: 1.4rem; }
  .stats-grid { gap: 8px; }
  .pills { gap: 6px; }
  .pill { padding: 6px 14px; font-size: 0.8rem; }
}