/*
 * This is a manifest file that'll be compiled into application.css.
 *
 * With Propshaft, assets are served efficiently without preprocessing steps. You can still include
 * application-wide styles in this file, but keep in mind that CSS precedence will follow the standard
 * cascading order, meaning styles declared later in the document or manifest will override earlier ones,
 * depending on specificity.
 *
 * Consider organizing styles into separate files for maintainability.
 */

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #f5f5f5;
  color: #333;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 640px;
  margin: 40px auto;
  padding: 0 20px;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: #111;
}

.todo-form { margin-bottom: 16px; }

.form-row {
  display: flex;
  gap: 8px;
}

.todo-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s;
}

.todo-input:focus { border-color: #4f46e5; }

.btn {
  padding: 10px 18px;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.15s;
}

.btn:hover { opacity: 0.85; }
.btn-primary { background: #4f46e5; color: #fff; }
.btn-secondary { background: #e5e7eb; color: #374151; }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn-danger { background: #ef4444; color: #fff; }

.todo-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.todo-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 8px;
  transition: opacity 0.2s;
}

.todo-item.completed { opacity: 0.55; }
.todo-item.completed .todo-title { text-decoration: line-through; color: #9ca3af; }

.toggle-btn { background: none; border: none; padding: 0; cursor: pointer; }
.toggle-btn form { margin: 0; }

.checkbox {
  width: 22px;
  height: 22px;
  border: 2px solid #4f46e5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #4f46e5;
  font-weight: bold;
  background: #fff;
  transition: background 0.15s;
}

.todo-item.completed .checkbox { background: #4f46e5; color: #fff; }
.todo-title { flex: 1; font-size: 1rem; }
.todo-actions { display: flex; gap: 6px; }

.error-messages {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 6px;
  padding: 10px 14px;
  margin-bottom: 12px;
  color: #b91c1c;
  font-size: 0.9rem;
}

/* ── Lexivo ── */

body { background: #f0f0f7; }

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 52px;
  background: #1a1a2e;
  color: #fff;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #a5b4fc;
  text-decoration: none;
  letter-spacing: 0.05em;
}

.nav-links { display: flex; gap: 4px; }

.nav-link {
  color: #cbd5e1;
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover { background: #2d2d4e; color: #fff; }

main .container { max-width: 700px; margin: 32px auto; padding: 0 20px; }

/* Stats */
.stats-grid {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.stat-card {
  flex: 1 1 90px;
  background: #fff;
  border-radius: 10px;
  padding: 16px 12px;
  text-align: center;
  border-top: 3px solid transparent;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.stat-number { font-size: 2rem; font-weight: 700; line-height: 1; }
.stat-label  { font-size: 0.75rem; color: #6b7280; margin-top: 4px; }

.stat-total    { border-color: #6366f1; }
.stat-unseen   { border-color: #94a3b8; }
.stat-learning { border-color: #f59e0b; }
.stat-known    { border-color: #22c55e; }
.stat-due      { border-color: #ef4444; }

.stat-total    .stat-number { color: #6366f1; }
.stat-due      .stat-number { color: #ef4444; }
.stat-learning .stat-number { color: #f59e0b; }
.stat-known    .stat-number { color: #22c55e; }

.action-row {
  display: flex;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.btn-success { background: #22c55e; color: #fff; }
.btn-outline {
  background: transparent;
  color: #6366f1;
  border: 1.5px solid #6366f1;
}

/* Import */
.section { margin-bottom: 36px; }
.section h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: #111; }
.hint { font-size: 0.82rem; color: #6b7280; margin-bottom: 10px; }
.hint code { background: #e5e7eb; padding: 1px 4px; border-radius: 3px; font-family: monospace; }

.import-textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-family: monospace;
  font-size: 0.9rem;
  resize: vertical;
  margin-bottom: 8px;
  outline: none;
  transition: border-color 0.15s;
}
.import-textarea:focus { border-color: #6366f1; }

/* Word table */
.word-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.word-row { border-bottom: 1px solid #e5e7eb; }
.word-row:hover { background: #f9fafb; }
.word-text { padding: 8px 6px; font-weight: 600; width: 28%; }
.word-def  { padding: 8px 6px; color: #4b5563; width: 50%; }
.word-status { padding: 8px 6px; width: 14%; }
.word-actions { padding: 8px 4px; text-align: right; width: 8%; }

.badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}
.badge-new      { background: #e5e7eb; color: #374151; }
.badge-known    { background: #dcfce7; color: #166534; }
.badge-learning { background: #fef3c7; color: #92400e; }
.badge-skipped  { background: #f1f5f9; color: #64748b; }

.due-info { font-size: 0.72rem; color: #ef4444; margin-left: 4px; }

.btn-del {
  background: none;
  border: none;
  color: #9ca3af;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 6px;
}
.btn-del:hover { color: #ef4444; }

/* Flash */
.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.flash-notice { background: #dcfce7; color: #166534; }
.flash-alert  { background: #fef3c7; color: #92400e; }

/* ── Flashcard ── */

.filter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: #6b7280;
}
.link-muted { color: #9ca3af; text-decoration: none; }
.link-muted:hover { color: #6b7280; }

.flashcard-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 12px 0 32px;
}

/* 3D card container */
.flashcard {
  width: 100%;
  max-width: 480px;
  height: 240px;
  perspective: 1000px;
  cursor: pointer;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.38s ease, opacity 0.22s ease, translate 0.22s ease;
}

.flashcard.is-flipped { transform: rotateY(180deg); }

.flashcard.slide-right {
  translate: 120% 0;
  opacity: 0;
}
.flashcard.slide-left {
  translate: -120% 0;
  opacity: 0;
}
.flashcard.slide-up {
  translate: 0 -80px;
  opacity: 0;
}

.card-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 4px 24px rgba(0,0,0,.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 24px;
  text-align: center;
  user-select: none;
}

.card-back { transform: rotateY(180deg); }

.card-word {
  font-size: 2rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 10px;
}

.card-definition {
  font-size: 1.1rem;
  color: #374151;
  line-height: 1.5;
}
.card-definition.muted { color: #9ca3af; font-style: italic; }

.card-example {
  margin-top: 10px;
  font-size: 0.9rem;
  color: #6b7280;
}

.card-interval {
  font-size: 0.75rem;
  color: #9ca3af;
  margin-bottom: 8px;
}

.flip-hint {
  position: absolute;
  bottom: 12px;
  font-size: 0.72rem;
  color: #d1d5db;
  pointer-events: none;
}

/* Action buttons */
.card-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.inline-form { display: inline; }

.btn-learning { background: #6366f1; color: #fff; min-width: 110px; justify-content: center; }
.btn-known    { background: #22c55e; color: #fff; min-width: 110px; justify-content: center; }
.btn-skip     { background: #e5e7eb; color: #374151; min-width: 90px; justify-content: center; }

/* Keyboard hint row */
.key-hint {
  font-size: 0.8rem;
  color: #9ca3af;
}
kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  background: #f9fafb;
  font-size: 0.75rem;
  font-family: monospace;
  color: #374151;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.empty-icon {
  font-family: monospace;
  font-size: 2rem;
  color: #d1d5db;
  margin-bottom: 16px;
}
.empty-state h2 { margin-bottom: 10px; }
.empty-state p  { color: #6b7280; margin-bottom: 24px; }

/* Upcoming list */
.upcoming-list {
  max-width: 320px;
  margin: 0 auto 24px;
  text-align: left;
}
.upcoming-item {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid #e5e7eb;
  font-size: 0.9rem;
}
.upcoming-word { font-weight: 600; }
.upcoming-when { color: #9ca3af; }

.progress-text { font-size: 0.85rem; color: #6b7280; }

/* ── Good button ────────────────────────────────────── */
.btn-good { background: #10b981; color: #fff; min-width: 110px; justify-content: center; }

/* ── Progress bar ──────────────────────────────────── */
.progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: #e5e7eb;
  border-radius: 99px;
  margin-bottom: 20px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #22c55e);
  border-radius: 99px;
  transition: width 0.4s ease;
}

/* ── File import ───────────────────────────────────── */
.import-file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.file-input { font-size: 0.85rem; color: #374151; }
.import-or  { font-size: 0.82rem; color: #9ca3af; }