/* ===== Tokens ===== */
:root {
  --bg: #f4f4f3;
  --paper: #ffffff;
  --ink: #1b1b1a;
  --muted: #7b7b76;
  --faint: #a5a5a0;
  --line: #e6e6e3;
  --line-strong: #d8d8d4;
  --red: #d43a2f;
  --red-ink: #b8322a;
  --red-tint: rgba(212, 58, 47, 0.1);
  --red-edge: rgba(212, 58, 47, 0.45);
  --green: #1f7a46;
  --green-tint: #e4f4e9;
  --chip-active: #fdecea;
  --dark-btn: #26251f;
  --dark-btn-hover: #3a382f;
  --focus: #26251f;
  --on-dark: #ffffff;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(27, 27, 26, 0.05), 0 8px 24px rgba(27, 27, 26, 0.05);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Dark tokens apply when the system prefers dark (unless the user forced
   light in settings) or when the user explicitly picked dark. */
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg: #111110;
    --paper: #1b1b1a;
    --ink: #ecece8;
    --muted: #94948e;
    --faint: #6b6b66;
    --line: #2b2b29;
    --line-strong: #3a3a37;
    --red: #e8695a;
    --red-ink: #f08a7d;
    --red-tint: rgba(232, 105, 90, 0.16);
    --red-edge: rgba(232, 105, 90, 0.5);
    --green: #6fd39a;
    --green-tint: rgba(64, 180, 116, 0.18);
    --chip-active: rgba(232, 105, 90, 0.16);
    --dark-btn: #ecece8;
    --dark-btn-hover: #d8d8d2;
    --focus: #ecece8;
    --on-dark: #111110;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

html[data-theme="dark"] {
  --bg: #111110;
  --paper: #1b1b1a;
  --ink: #ecece8;
  --muted: #94948e;
  --faint: #6b6b66;
  --line: #2b2b29;
  --line-strong: #3a3a37;
  --red: #e8695a;
  --red-ink: #f08a7d;
  --red-tint: rgba(232, 105, 90, 0.16);
  --red-edge: rgba(232, 105, 90, 0.5);
  --green: #6fd39a;
  --green-tint: rgba(64, 180, 116, 0.18);
  --chip-active: rgba(232, 105, 90, 0.16);
  --dark-btn: #ecece8;
  --dark-btn-hover: #d8d8d2;
  --focus: #ecece8;
  --on-dark: #111110;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.ic {
  width: 16px;
  height: 16px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ic--14 { width: 14px; height: 14px; }
.ic--16 { width: 16px; height: 16px; }
.ic--20 { width: 20px; height: 20px; }

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand__logo {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--dark-btn);
  color: var(--on-dark);
  flex: none;
}

.brand__logo .ic {
  stroke-width: 1.6;
}

.brand__title {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand__sub {
  margin: 2px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.perks {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
}

.perk {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.perk .ic {
  color: var(--ink);
}

.perk--btn {
  background: none;
  border: 0;
  padding: 6px 8px;
  margin-right: -8px;
  border-radius: 8px;
  cursor: pointer;
}

.perk--btn:hover {
  background: var(--paper);
  color: var(--ink);
}

/* ===== Popups (settings / samples) ===== */
.popwrap {
  position: relative;
  display: inline-flex;
}

/* ===== Layout ===== */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 20px;
  align-items: start;
  padding: 4px 32px 40px;
  max-width: 1500px;
  margin: 0 auto;
}

/* ===== Editor panel ===== */
.editor {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
}

.tool-btn:hover {
  border-color: var(--line-strong);
  background: var(--bg);
}

.tool-btn--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

.tool-btn--ghost:hover {
  color: var(--red);
  background: var(--red-tint);
  border-color: transparent;
}

.history {
  display: inline-flex;
  gap: 2px;
}

.iconbtn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--muted);
  cursor: pointer;
}

.iconbtn:hover:not(:disabled) {
  background: var(--bg);
  color: var(--ink);
}

.iconbtn:disabled {
  opacity: 0.35;
  cursor: default;
}

.stats {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.stats__sep {
  color: var(--faint);
}

/* ===== Text pad ===== */
.pad {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  min-height: 340px;
}

.pad:focus-within {
  border-color: var(--line-strong);
}

.pad__marks,
.pad textarea {
  margin: 0;
  border: 0;
  padding: 22px 24px;
  font: 17px/1.75 var(--sans);
  letter-spacing: normal;
  tab-size: 4;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0;
  text-rendering: geometricPrecision;
}

.pad__marks {
  position: absolute;
  inset: 0;
  overflow: hidden;
  color: transparent;
  pointer-events: none;
  border-radius: var(--radius-sm);
}

.pad textarea {
  position: relative;
  display: block;
  width: 100%;
  min-height: 340px;
  height: 100%;
  resize: none;
  overflow-y: auto;
  background: transparent;
  color: var(--ink);
  border-radius: var(--radius-sm);
  outline: none;
  caret-color: var(--red);
}

.pad textarea::placeholder {
  color: var(--faint);
  opacity: 1;
}

.pad__marks mark {
  background: var(--red-tint);
  color: transparent;
  text-decoration: underline wavy var(--red);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 var(--red-edge);
}

.pad__marks mark.is-active {
  background: var(--red-tint);
  text-decoration-thickness: 2px;
  box-shadow: inset 0 -2px 0 var(--red);
}

/* red dot marker after each flagged word */
.pad__marks mark::after {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-left: 3px;
  border-radius: 50%;
  background: var(--red);
  vertical-align: 0.55em;
}

.menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 30;
  min-width: 240px;
  padding: 6px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

#settings-menu {
  left: auto;
  right: 0;
}

.menu__item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 8px;
  background: none;
  text-align: left;
  font-size: 14px;
  cursor: pointer;
  color: var(--ink);
}

.menu__item:hover {
  background: var(--bg);
}

.menu__item--label {
  cursor: pointer;
}

.menu__item input {
  accent-color: var(--dark-btn);
}


/* ===== Actions row ===== */
.actions {
  display: flex;
  align-items: stretch;
  gap: 12px;
  flex-wrap: wrap;
}

.dropzone {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1 1 300px;
  min-width: 0;
  padding: 16px 18px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone.is-over {
  border-color: var(--red-edge);
  background: var(--red-tint);
  color: var(--ink);
}

.dropzone__text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.actions__btns {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover {
  background: var(--bg);
  border-color: var(--line-strong);
}

.btn--primary {
  background: var(--dark-btn);
  border-color: var(--dark-btn);
  color: var(--on-dark);
}

.btn--primary:hover {
  background: var(--dark-btn-hover);
  border-color: var(--dark-btn-hover);
}

.status {
  margin: 0;
  font-size: 14px;
  color: var(--red);
}

.status:empty {
  display: none;
}

/* ===== Sidebar ===== */
.side {
  position: sticky;
  top: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
  max-height: calc(100dvh - 32px);
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 5px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.tab {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 12px;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

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

.tab.is-active {
  background: var(--bg);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
}

.side__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-right: 2px;
  scrollbar-width: thin;
}

.alllist[hidden],
.cards[hidden] {
  display: none;
}


/* ===== Error cards ===== */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card.is-active {
  border-color: var(--red-edge);
  box-shadow: 0 0 0 1px var(--red-edge), var(--shadow);
}

.card__head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 8px;
  background: var(--red-tint);
  color: var(--red-ink);
  font-size: 15px;
  font-weight: 600;
  max-width: 55%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.card__count {
  font-size: 13px;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.navbtn {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  color: var(--muted);
  cursor: pointer;
}

.navbtn:hover {
  border-color: var(--line-strong);
  color: var(--ink);
  background: var(--bg);
}

.navbtn:disabled {
  opacity: 0.35;
  cursor: default;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  cursor: pointer;
}

.chip:hover {
  border-color: var(--line-strong);
  background: var(--bg);
}

.chip--best {
  background: var(--green-tint);
  border-color: transparent;
  color: var(--green);
  font-weight: 600;
}

.chip--best:hover {
  background: var(--green-tint);
  border-color: var(--green);
}

.chip__enter {
  font-size: 12px;
  opacity: 0.75;
}

.card__explain {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
}

.card__explain-body {
  min-width: 0;
}

.card__explain-label {
  font-size: 12px;
  color: var(--faint);
  margin: 0 0 2px;
}

.card__explain-text {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.5;
}

.card__explain-text b {
  color: var(--ink);
  font-weight: 600;
}

.copybtn {
  margin-left: auto;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 6px;
  background: none;
  color: var(--faint);
  cursor: pointer;
  flex: none;
}

.copybtn:hover {
  background: var(--paper);
  color: var(--ink);
}

/* ===== All-errors list ===== */
.allrow {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 12px 14px;
}

.allrow__word {
  font-weight: 600;
  color: var(--red-ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.allrow__count {
  margin-left: auto;
  font-size: 13px;
  color: var(--faint);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.allrow__goto {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  color: var(--muted);
  cursor: pointer;
  flex: none;
}

.allrow__goto:hover {
  border-color: var(--line-strong);
  color: var(--ink);
  background: var(--bg);
}

/* ===== Empty state ===== */
.empty {
  padding: 34px 20px;
  text-align: center;
  background: var(--paper);
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
}

.empty__title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.empty__sub {
  margin: 6px 0 0;
  font-size: 13.5px;
  color: var(--muted);
}

/* ===== Responsive ===== */
@media (max-width: 1180px) {
  .layout {
    grid-template-columns: minmax(0, 1fr) 360px;
  }
}

@media (max-width: 980px) {
  .topbar {
    flex-wrap: wrap;
    padding: 16px 20px;
    gap: 12px;
  }

  .perks {
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
  }

  .perk {
    white-space: normal;
  }

  .layout {
    grid-template-columns: minmax(0, 1fr);
    padding: 4px 20px 32px;
  }

  .side {
    position: static;
    max-height: none;
  }

  .side__body {
    max-height: 60dvh;
  }
}

@media (max-width: 640px) {
  .brand__title {
    font-size: 20px;
  }

  .layout {
    padding: 4px 14px 28px;
  }

  .editor {
    padding: 12px;
  }

  .toolbar {
    gap: 8px;
  }

  .stats {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .pad__marks,
  .pad textarea {
    padding: 16px;
    font-size: 16px;
  }

  .actions__btns {
    width: 100%;
  }

  .actions__btns .btn {
    flex: 1;
  }

  .tabs {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

/* ===== Card extras ===== */
.card__hint {
  font-size: 13.5px;
  color: var(--muted);
}

.card__meta {
  display: flex;
  justify-content: flex-end;
  gap: 14px;
}

.side__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}

.side__bar[hidden] {
  display: none;
}

.side__bar-label {
  font-size: 13px;
  color: var(--muted);
}

.btn--sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
}

.linkbtn {
  border: 0;
  padding: 0;
  background: none;
  cursor: pointer;
  font-size: 13px;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.linkbtn:hover {
  color: var(--red);
}

.copybtn:disabled {
  opacity: 0.35;
  cursor: default;
}

.allrow.is-active {
  border-color: var(--red-edge);
  box-shadow: 0 0 0 1px var(--red-edge), var(--shadow);
}

.status--info {
  color: var(--muted);
}