/* ==========================================================
   Kartičky 5 boxov — Design System
   Based on dizajn-manual.html
   ========================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Palette — Light (default) */
  --paper: #EDE7D6;
  --paper-card: #F8F4E9;
  --paper-shadow: #C9BC9C;
  --paper-shadow-strong: #A99C7C;
  --ink: #2A2721;
  --ink-soft: #6B6355;
  --ink-faint: #9C927C;
  --stamp-red: #A6392B;
  --stamp-red-ink: #8C2F23;
  --tab-teal: #3B724A;
  --tab-teal-ink: #264E31;
  --gold: #B8862E;

  /* Spacing */
  --space-3xs: 4px;
  --space-2xs: 8px;
  --space-xs: 12px;
  --space-sm: 20px;
  --space-md: 32px;
  --space-lg: 48px;
  --space-xl: 72px;
  --space-2xl: 112px;

  /* Border radius */
  --radius-card: 6px;
  --radius-tab: 3px;

  /* Typography */
  --font-display: 'Special Elite', 'Courier New', monospace;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-med: 300ms ease;
  --transition-slow: 500ms cubic-bezier(.4,.2,.2,1);
}

/* ---------- Dark Mode ---------- */
[data-theme="dark"] {
  --paper: #1A1916;
  --paper-card: #252320;
  --paper-shadow: #3A3630;
  --paper-shadow-strong: #4A453D;
  --ink: #E8E2D0;
  --ink-soft: #B5AE9C;
  --ink-faint: #7A7366;
  --stamp-red: #D4584A;
  --stamp-red-ink: #E56B5D;
  --tab-teal: #519E67;
  --tab-teal-ink: #65C27F;
  --gold: #D4A43E;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  background-image:
    radial-gradient(var(--paper-shadow) 0.5px, transparent 0.5px);
  background-size: 14px 14px;
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  transition: background-color var(--transition-med), color var(--transition-med);
}

a { color: var(--tab-teal-ink); }
a:hover { color: var(--tab-teal); }

button {
  font-family: inherit;
  cursor: pointer;
}

input, textarea, select {
  font-family: var(--font-body);
  font-size: 16px;
}

/* ---------- Accessibility ---------- */
:focus-visible {
  outline: 2px solid var(--tab-teal);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Layout ---------- */
.app-container {
  max-width: 580px;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-sm) calc(80px + var(--space-md));
  min-height: 100vh;
}

@media (min-width: 640px) {
  .app-container {
    padding: var(--space-md) var(--space-md) calc(80px + var(--space-md));
  }
}

/* ---------- Top bar ---------- */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  margin-bottom: var(--space-sm);
  border-bottom: 1px solid var(--paper-shadow-strong);
}

.top-bar__title {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 0;
}

.top-bar__back {
  display: flex;
  align-items: center;
  gap: var(--space-3xs);
  background: none;
  border: none;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: var(--space-2xs);
  border-radius: var(--radius-tab);
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
}

.top-bar__back:hover {
  background: var(--paper-shadow);
}

.top-bar__actions {
  display: flex;
  gap: var(--space-2xs);
}

/* ---------- Bottom nav ---------- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--paper-card);
  border-top: 1px solid var(--paper-shadow-strong);
  display: flex;
  justify-content: space-around;
  padding: var(--space-2xs) 0 calc(var(--space-2xs) + env(safe-area-inset-bottom, 0px));
  z-index: 100;
}

.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  background: none;
  border: none;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: var(--space-3xs) var(--space-xs);
  min-width: 44px;
  min-height: 44px;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.bottom-nav__item--active {
  color: var(--tab-teal-ink);
}

.bottom-nav__item:hover {
  color: var(--ink);
}

.bottom-nav__icon {
  font-size: 20px;
  line-height: 1;
}

/* ---------- Box Stack Component ---------- */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

@media (min-width: 400px) {
  .stack-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.stack {
  position: relative;
  text-align: center;
  cursor: default;
  transition: transform var(--transition-fast);
}

.stack--due {
  cursor: pointer;
}

.stack--due:hover {
  transform: translateY(-2px);
}

.stack__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.stack__pile {
  position: relative;
  height: 92px;
  margin-bottom: var(--space-2xs);
}

.stack__leaf,
.stack__top {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 84px;
  height: 60px;
  background: var(--paper-card);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-tab);
  box-shadow: 1px 2px 0 rgba(0,0,0,0.05);
}

/* depth 0: empty box — dashed outline */
.stack--depth-0 .stack__top {
  transform: translate(-50%, 0);
  background: transparent;
  border-style: dashed;
  box-shadow: none;
}

/* depth 1: 1–3 cards */
.stack--depth-1 .stack__leaf:nth-child(1) { transform: translate(-50%, -2px) rotate(-2deg); }
.stack--depth-1 .stack__top { transform: translate(-50%, 0) rotate(1deg); }

/* depth 2: 4–9 cards */
.stack--depth-2 .stack__leaf:nth-child(1) { transform: translate(-50%, -6px) rotate(-4deg); }
.stack--depth-2 .stack__leaf:nth-child(2) { transform: translate(-50%, -3px) rotate(3deg); }
.stack--depth-2 .stack__top { transform: translate(-50%, 0) rotate(-1deg); }

/* depth 3: 10+ cards */
.stack--depth-3 .stack__leaf:nth-child(1) { transform: translate(-50%, -10px) rotate(-5deg); }
.stack--depth-3 .stack__leaf:nth-child(2) { transform: translate(-50%, -6px) rotate(4deg); }
.stack--depth-3 .stack__leaf:nth-child(3) { transform: translate(-50%, -3px) rotate(-2deg); }
.stack--depth-3 .stack__top { transform: translate(-50%, 0) rotate(2deg); }

.stack__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: var(--radius-tab);
  padding: 1px 8px;
}

/* Due state */
.stack--due .stack__top {
  outline: 2px solid var(--stamp-red);
  outline-offset: 2px;
}

.stack--due .stack__flag {
  position: absolute;
  top: -14px;
  right: 2px;
  width: 16px;
  height: 22px;
  background: var(--stamp-red);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 78%, 0 100%);
  animation: flagPulse 1.8s ease-in-out infinite;
  transform-origin: top center;
}

@keyframes flagPulse {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-6deg); }
}

.stack--due .stack__badge {
  border-color: var(--stamp-red);
  color: var(--stamp-red-ink);
}

/* ---------- Flip Card ---------- */
.flip-card-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
}

.flip-card {
  width: 100%;
  max-width: 340px;
  height: 200px;
  perspective: 1200px;
  cursor: pointer;
}

@media (min-width: 400px) {
  .flip-card {
    height: 220px;
  }
}

.flip-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform var(--transition-slow);
  transform-style: preserve-3d;
}

.flip-card--flipped .flip-card__inner {
  transform: rotateY(180deg);
}

.flip-card__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: var(--paper-card);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  box-shadow: 0 6px 0 -3px var(--paper-shadow), 0 10px 16px rgba(0,0,0,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  text-align: center;
  font-size: 18px;
  line-height: 1.4;
  word-break: break-word;
  overflow-y: auto;
}

.flip-card__face--front {
  font-weight: 600;
}

.flip-card__face--back {
  transform: rotateY(180deg);
  background: #F2ECDC;
  color: var(--ink-soft);
}

[data-theme="dark"] .flip-card__face--back {
  background: #2D2A25;
}

.flip-card__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  text-align: center;
}

.flip-card__box-label {
  position: absolute;
  top: var(--space-2xs);
  left: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

/* ---------- Answer Buttons ---------- */
.answer-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  padding: var(--space-xs) 0;
}

.stamp-btn {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.03em;
  padding: 14px 28px;
  border-radius: var(--radius-tab);
  border: 2px solid currentColor;
  background: transparent;
  cursor: pointer;
  text-transform: uppercase;
  min-width: 44px;
  min-height: 44px;
  transition: transform 100ms ease, background-color var(--transition-fast);
}

.stamp-btn--no { color: var(--stamp-red-ink); }
.stamp-btn--yes { color: var(--tab-teal-ink); }
.stamp-btn:active { transform: scale(0.96) rotate(-2deg); }

.stamp-btn--no:hover { background: rgba(166, 57, 43, 0.08); }
.stamp-btn--yes:hover { background: rgba(44, 87, 83, 0.08); }

/* ---------- Deck Item ---------- */
.deck-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.deck-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--paper-card);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  color: inherit;
  min-height: 44px;
}

.deck-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.deck-item__title {
  font-weight: 600;
  margin-bottom: 2px;
}

.deck-item__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
}

.deck-item__due {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #fff;
  background: var(--stamp-red);
  border-radius: 999px;
  padding: 3px 10px;
  flex-shrink: 0;
}

/* ---------- FAB (Floating Action Button) ---------- */
.fab {
  position: fixed;
  bottom: calc(60px + var(--space-sm) + env(safe-area-inset-bottom, 0px));
  right: var(--space-sm);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--tab-teal);
  color: #fff;
  border: none;
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  z-index: 50;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

@media (min-width: 640px) {
  .fab {
    bottom: var(--space-md);
  }
}

.fab:hover {
  transform: scale(1.08);
  background: var(--tab-teal-ink);
}

.fab:active {
  transform: scale(0.95);
}

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(42, 39, 33, 0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm);
  animation: fadeIn 200ms ease;
}

[data-theme="dark"] .modal-backdrop {
  background: rgba(0, 0, 0, 0.65);
}

.modal {
  background: var(--paper-card);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  padding: var(--space-md);
  width: 100%;
  max-width: 420px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 16px 48px rgba(0,0,0,0.2);
  animation: slideUp 250ms ease;
}

.modal__title {
  font-family: var(--font-display);
  font-size: 20px;
  margin: 0 0 var(--space-sm);
}

.modal__actions {
  display: flex;
  gap: var(--space-xs);
  justify-content: flex-end;
  margin-top: var(--space-md);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  top: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  pointer-events: none;
}

.toast {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-card);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  pointer-events: auto;
  animation: toastIn 300ms ease, toastOut 300ms ease 2.7s;
  animation-fill-mode: forwards;
}

.toast--success { border-left: 3px solid var(--tab-teal); }
.toast--error { border-left: 3px solid var(--stamp-red); }
.toast--info { border-left: 3px solid var(--gold); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: var(--space-sm);
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: var(--space-3xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-xs) var(--space-sm);
  background: var(--paper);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  color: var(--ink);
  font-size: 16px;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--tab-teal);
  outline: none;
  box-shadow: 0 0 0 2px rgba(44, 87, 83, 0.15);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 14px;
}

.form-input--error {
  border-color: var(--stamp-red);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-tab);
  border: 1px solid var(--paper-shadow-strong);
  background: var(--paper-card);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  cursor: pointer;
  min-height: 44px;
  transition: background-color var(--transition-fast), transform 100ms ease;
}

.btn:hover {
  background: var(--paper-shadow);
}

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

.btn--primary {
  background: var(--tab-teal);
  color: #fff;
  border-color: var(--tab-teal-ink);
}

.btn--primary:hover {
  background: var(--tab-teal-ink);
}

.btn--danger {
  color: var(--stamp-red-ink);
  border-color: var(--stamp-red);
}

.btn--danger:hover {
  background: rgba(166, 57, 43, 0.08);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  font-size: 18px;
}

.btn--full {
  width: 100%;
}

/* ---------- Toggle Switch ---------- */
.toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--paper-shadow);
}

.toggle__label {
  font-size: 15px;
}

.toggle__switch {
  position: relative;
  width: 48px;
  height: 28px;
  background: var(--paper-shadow);
  border-radius: 14px;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  flex-shrink: 0;
}

.toggle__switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: var(--paper-card);
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform var(--transition-fast);
}

.toggle__switch--on {
  background: var(--tab-teal);
}

.toggle__switch--on::after {
  transform: translateX(20px);
}

/* ---------- Progress Bar ---------- */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--paper-shadow);
  border-radius: 3px;
  overflow: hidden;
  margin: var(--space-xs) 0;
}

.progress-bar__fill {
  height: 100%;
  background: var(--tab-teal);
  border-radius: 3px;
  transition: width var(--transition-med);
}

/* ---------- Study Progress ---------- */
.study-progress {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  text-align: center;
  margin-bottom: var(--space-xs);
}

/* ---------- Card fly-away animation ---------- */
.card-fly-right {
  animation: flyRight 300ms ease-in forwards;
}

.card-fly-left {
  animation: flyLeft 300ms ease-in forwards;
}

@keyframes flyRight {
  to { opacity: 0; transform: translateX(120px) rotate(8deg); }
}

@keyframes flyLeft {
  to { opacity: 0; transform: translateX(-120px) rotate(-8deg); }
}

/* ---------- Empty State ---------- */
.empty-state {
  text-align: center;
  padding: var(--space-xl) var(--space-sm);
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: var(--space-sm);
  opacity: 0.5;
}

.empty-state__title {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 0 0 var(--space-xs);
}

.empty-state__text {
  color: var(--ink-soft);
  margin: 0 0 var(--space-md);
  max-width: 32ch;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Stats ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.stat-card {
  background: var(--paper-card);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  text-align: center;
}

.stat-card__value {
  font-family: var(--font-display);
  font-size: 36px;
  line-height: 1.1;
}

.stat-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: var(--space-3xs);
}

.chart-container {
  background: var(--paper-card);
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  margin-bottom: var(--space-md);
}

.chart-container__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: var(--space-xs);
}

/* ---------- Settings ---------- */
.settings-section {
  margin-bottom: var(--space-md);
}

.settings-section__title {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0 0 var(--space-xs);
  padding-bottom: var(--space-2xs);
  border-bottom: 1px dashed var(--paper-shadow-strong);
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--paper-shadow-strong);
  margin-bottom: var(--space-md);
}

.tab {
  flex: 1;
  text-align: center;
  padding: var(--space-xs) var(--space-sm);
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  min-height: 44px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tab--active {
  color: var(--ink);
  border-bottom-color: var(--tab-teal);
}

.tab:hover {
  color: var(--ink);
}

/* ---------- Backup Banner ---------- */
.backup-banner {
  background: rgba(184, 134, 46, 0.12);
  border: 1px solid var(--gold);
  border-radius: var(--radius-card);
  padding: var(--space-xs) var(--space-sm);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs);
  font-size: 13px;
}

.backup-banner__text {
  color: var(--ink-soft);
}

.backup-banner__action {
  background: none;
  border: none;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
}

/* ---------- Card List (in deck detail) ---------- */
.card-list {
  margin-top: var(--space-md);
}

.card-list__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: var(--space-xs);
}

.card-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-sm);
  border-bottom: 1px solid var(--paper-shadow);
  gap: var(--space-xs);
}

.card-list-item:last-child {
  border-bottom: none;
}

.card-list-item__content {
  flex: 1;
  min-width: 0;
}

.card-list-item__front {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-list-item__back {
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-list-item__box {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  flex-shrink: 0;
}

.card-list-item__actions {
  display: flex;
  gap: var(--space-3xs);
  flex-shrink: 0;
}

.card-list-item__btn {
  background: none;
  border: none;
  color: var(--ink-faint);
  font-size: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-tab);
  cursor: pointer;
}

.card-list-item__btn:hover {
  background: var(--paper-shadow);
  color: var(--ink);
}

.card-list-item__btn--delete:hover {
  color: var(--stamp-red-ink);
}

/* ---------- Import Preview Table ---------- */
.import-preview {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  margin: var(--space-sm) 0;
}

.import-preview table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.import-preview th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: left;
  padding: var(--space-2xs) var(--space-xs);
  border-bottom: 1px solid var(--paper-shadow-strong);
  background: var(--paper);
  position: sticky;
  top: 0;
}

.import-preview td {
  padding: var(--space-2xs) var(--space-xs);
  border-bottom: 1px solid var(--paper-shadow);
}

.import-preview tr--error td {
  background: rgba(166, 57, 43, 0.06);
}

/* ---------- Activity Chart (SVG) ---------- */
.activity-chart {
  width: 100%;
  height: 120px;
}

.activity-chart__bar {
  fill: var(--tab-teal);
  rx: 2;
  transition: opacity var(--transition-fast);
}

.activity-chart__bar:hover {
  opacity: 0.7;
}

.activity-chart__label {
  fill: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 9px;
}

/* ---------- Done screen ---------- */
.done-screen {
  text-align: center;
  padding: var(--space-xl) var(--space-sm);
}

.done-screen__emoji {
  font-size: 64px;
  margin-bottom: var(--space-sm);
}

.done-screen__title {
  font-family: var(--font-display);
  font-size: 26px;
  margin: 0 0 var(--space-xs);
}

.done-screen__text {
  color: var(--ink-soft);
  margin: 0 0 var(--space-md);
}

/* ---------- File upload ---------- */
.file-drop {
  display: block;
  border: 2px dashed var(--paper-shadow-strong);
  border-radius: var(--radius-card);
  padding: var(--space-md);
  text-align: center;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.file-drop:hover,
.file-drop--active {
  border-color: var(--tab-teal);
  background: rgba(44, 87, 83, 0.04);
}

.file-drop input[type="file"] {
  display: none;
}

/* ---------- FAB ---------- */
.btn--fab {
  position: fixed;
  bottom: calc(var(--space-md) + 60px);
  right: var(--space-md);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  font-size: 28px;
  background: var(--tab-teal);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px var(--paper-shadow-strong);
  z-index: 50;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn--fab:hover {
  background: var(--tab-teal-ink);
  color: #fff;
}

@media (min-width: 640px) {
  .btn--fab {
    bottom: calc(var(--space-lg) + 70px);
  }
}

/* ---------- Utilities ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

.text-center { text-align: center; }
.text-mono { font-family: var(--font-mono); }
.text-display { font-family: var(--font-display); }
.text-faint { color: var(--ink-faint); }
.text-soft { color: var(--ink-soft); }
.text-small { font-size: 13px; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }