@import url("https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Mono:wght@400;500&family=Outfit:wght@300;400;500&display=swap");
:root {
  --font-display: Syne, sans-serif;
  --font-body: Outfit, sans-serif;
  --font-mono: DM Mono, monospace;
  --bg: #fafaf8;
  --bg-surface: #f2f2ef;
  --bg-elevated: #ffffff;
  --border: #e4e4e0;
  --border-subtle: #edede9;
  --text: #1c1c1a;
  --text-2: #5e5e5a;
  --text-3: #9e9e98;
  --accent: #1c1c1a;
  --accent-fg: #ffffff;
  --accent-hover: #343430;
  --miss: #ef4444;
  --miss-bg: rgba(239,68,68,.09);
  --extra: #3b82f6;
  --extra-bg: rgba(59,130,246,.09);
  --ok: #22c55e;
  --nav-h: 56px;
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --shadow: 0 2px 12px rgba(0,0,0,.07);
  --shadow-md: 0 6px 28px rgba(0,0,0,.1);
  --transition: 0.18s ease;
}

[data-theme=dark] {
  --bg: #111110;
  --bg-surface: #1b1b19;
  --bg-elevated: #222220;
  --border: #2e2e2a;
  --border-subtle: #242421;
  --text: #eeeee8;
  --text-2: #8c8c86;
  --text-3: #4e4e48;
  --accent: #eeeee8;
  --accent-fg: #111110;
  --accent-hover: #d0d0c8;
  --miss-bg: rgba(239,68,68,.12);
  --extra-bg: rgba(59,130,246,.12);
  --shadow: 0 2px 12px rgba(0,0,0,.3);
  --shadow-md: 0 6px 28px rgba(0,0,0,.4);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: var(--bg);
  color: var(--text);
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
  -webkit-appearance: none;
}

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

img,
svg {
  display: block;
  max-width: 100%;
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-3);
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 28px;
  background: rgba(var(--bg-rgb, 250, 250, 248), 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition), border-color var(--transition);
}
[data-theme=dark] .navbar {
  background: rgba(17, 17, 16, 0.88);
}
.navbar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
  padding: 6px 0;
  flex-shrink: 0;
  transition: opacity var(--transition);
}
.navbar__brand:hover {
  opacity: 0.7;
}
.navbar__brand-dot {
  width: 7px;
  height: 7px;
  background: var(--text);
  border-radius: 50%;
  flex-shrink: 0;
  transition: background var(--transition);
}
.navbar__sep {
  width: 1px;
  height: 16px;
  background: var(--border);
  margin: 0 20px;
  flex-shrink: 0;
}
.navbar__links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}
.navbar__link {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 400;
  color: var(--text-2);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.navbar__link:hover {
  color: var(--text);
  background: var(--bg-surface);
}
.navbar__link.is-active {
  color: var(--text);
  font-weight: 500;
  background: var(--bg-surface);
}
.navbar__right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.navbar__theme {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: color var(--transition), background var(--transition);
}
.navbar__theme:hover {
  color: var(--text);
  background: var(--bg-surface);
}
.navbar__theme svg {
  width: 17px;
  height: 17px;
}
.navbar__theme .icon-moon {
  display: none;
}
.navbar__theme .icon-sun {
  display: block;
}
.navbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 34px;
  height: 34px;
  gap: 5px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: background var(--transition);
}
.navbar__burger:hover {
  background: var(--bg-surface);
}
.navbar__burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  border-radius: 99px;
  transition: transform 0.25s ease, opacity 0.2s;
}
.navbar__burger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.navbar__burger.is-open span:nth-child(2) {
  opacity: 0;
}
.navbar__burger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

[data-theme=dark] .navbar__theme .icon-sun {
  display: none;
}
[data-theme=dark] .navbar__theme .icon-moon {
  display: block;
}

@media (max-width: 680px) {
  .navbar {
    padding: 0 20px;
  }
  .navbar__sep {
    display: none;
  }
  .navbar__burger {
    display: flex;
  }
  .navbar__links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 12px 12px;
    box-shadow: var(--shadow-md);
  }
  .navbar__links.is-open {
    display: flex;
  }
  .navbar__link {
    padding: 10px 14px;
    font-size: 14px;
  }
}
.app {
  display: flex;
  height: 100vh;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--transition), background var(--transition), border-color var(--transition);
}
html.sidebar-open .sidebar {
  width: 260px;
}
.sidebar:not(.sidebar--open) {
  width: 0;
  overflow: hidden;
}

.sidebar__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: 9px;
}
.sidebar__logo-icon {
  width: 28px;
  height: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}
.sidebar__logo-icon svg {
  width: 13px;
  height: 13px;
}
.sidebar__logo-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.sidebar__close-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: background var(--transition), color var(--transition);
}
.sidebar__close-btn:hover {
  background: var(--bg-surface);
  color: var(--text);
}
.sidebar__close-btn svg {
  width: 14px;
  height: 14px;
}

.sidebar__body {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.sidebar__section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 10px;
}

.sidebar__steps {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
}
.sidebar__steps li {
  padding-left: 4px;
}
.sidebar__steps strong {
  color: var(--text);
  font-weight: 500;
}
.sidebar__steps kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text);
}

.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 99px;
  font-weight: 500;
}
.chip--miss {
  background: var(--miss-bg);
  color: var(--miss);
}

.sidebar__legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-2);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}
.legend-dot--miss {
  background: var(--miss);
}
.legend-dot--xtra {
  background: var(--extra);
}
.legend-dot--same {
  background: var(--border);
}

.wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  height: 50px;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
  background: var(--bg-elevated);
  transition: background var(--transition);
}

.topbar__menu-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: background var(--transition), color var(--transition);
  flex-shrink: 0;
}
.topbar__menu-btn:hover {
  background: var(--bg-surface);
  color: var(--text);
}
.topbar__menu-btn svg {
  width: 15px;
  height: 15px;
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 0;
}

.topbar__name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.topbar__name span {
  color: var(--text-3);
  font-weight: 400;
}

.topbar__divider {
  width: 1px;
  height: 16px;
  background: var(--border-subtle);
  margin: 0 6px;
}

.topbar__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform 0.15s;
  white-space: nowrap;
}
.btn svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  flex-shrink: 0;
}
.btn--icon {
  padding: 6px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
}
.btn--icon:hover {
  background: var(--bg-surface);
  color: var(--text);
}
.btn--ghost {
  background: var(--bg-surface);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  color: var(--text);
  background: var(--bg-elevated);
}
.btn--primary {
  background: var(--accent);
  color: var(--accent-fg);
  border: 1px solid transparent;
}
.btn--primary:hover {
  background: var(--accent-hover);
}
.btn--primary:active {
  transform: scale(0.97);
}
.btn--fix {
  background: var(--miss-bg);
  color: var(--miss);
  border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn--fix:hover {
  background: rgba(239, 68, 68, 0.15);
}
.btn--ok {
  background: rgba(34, 197, 94, 0.1);
  color: var(--ok);
  border: 1px solid rgba(34, 197, 94, 0.2);
}
.btn--ok:hover {
  background: rgba(34, 197, 94, 0.15);
}

.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 16px;
  gap: 12px;
  background: var(--bg);
}

.panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  height: 220px;
  flex-shrink: 0;
}

.panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: background var(--transition), border-color var(--transition);
}
.panel__head {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-subtle);
  gap: 8px;
  flex-shrink: 0;
}
.panel__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  flex: 1;
}
.panel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.panel__dot--html {
  background: var(--extra);
}
.panel__dot--word {
  background: var(--ok);
}
.panel__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
}
.panel__clear-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  padding: 2px 7px;
  border-radius: 99px;
  border: 1px solid var(--border);
  transition: color var(--transition), background var(--transition);
}
.panel__clear-btn:hover {
  color: var(--text);
  background: var(--bg-surface);
}

.editor {
  flex: 1;
  padding: 12px 14px;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text);
  caret-color: var(--accent);
}
.editor::placeholder {
  color: var(--text-3);
}

.action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
}
.action-bar__left, .action-bar__right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats {
  display: flex;
  align-items: center;
  gap: 16px;
}
.stats__item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
.stats__label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}
.stats__value {
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 12px;
}
.stats__value--ok {
  color: var(--ok);
}
.stats__value--miss {
  color: var(--miss);
}
.stats__value--xtra {
  color: var(--extra);
}

.progress__track {
  width: 80px;
  height: 4px;
  background: var(--bg-surface);
  border-radius: 99px;
  overflow: hidden;
}
.progress__fill {
  height: 100%;
  background: var(--ok);
  border-radius: 99px;
  transition: width 0.4s ease;
  width: 0%;
}

.results {
  flex: 1;
  overflow-y: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.results__empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 100%;
  padding: 40px;
  text-align: center;
}
.results__empty-icon {
  width: 48px;
  height: 48px;
  color: var(--border);
}
.results__empty-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: -0.02em;
}
.results__empty-sub {
  font-size: 13px;
  color: var(--text-3);
}

.diff {
  padding: 16px;
}
.diff__meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.diff__legend {
  display: flex;
  gap: 14px;
}
.diff__legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-2);
  font-family: var(--font-mono);
}
.diff__legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}
.diff__legend-dot--miss {
  background: var(--miss);
}
.diff__legend-dot--xtra {
  background: var(--extra);
}
.diff__legend-dot--same {
  background: var(--border);
}
.diff__match-pct {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
}
.diff__body {
  font-size: 14px;
  line-height: 2;
  color: var(--text);
}
.diff__token {
  display: inline;
  border-radius: 3px;
  padding: 1px 2px;
}
.diff__token--eq {
  color: var(--text-2);
}
.diff__token--miss {
  background: var(--miss-bg);
  color: var(--miss);
}
.diff__token--xtra {
  background: var(--extra-bg);
  color: var(--extra);
}

.warn-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  margin-bottom: 12px;
}

.perfect {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 48px;
  text-align: center;
}
.perfect__ring {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.1);
  border: 1.5px solid rgba(34, 197, 94, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ok);
}
.perfect__ring svg {
  width: 22px;
  height: 22px;
}
.perfect__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.perfect__sub {
  font-size: 13px;
  color: var(--text-3);
}

.fixed {
  margin-top: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.fixed__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
}
.fixed__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ok);
}
.fixed__title svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
}
.fixed__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
}
.fixed__hint code {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
}
.fixed__textarea {
  width: 100%;
  height: 180px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  outline: none;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-2);
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(14px);
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  pointer-events: none;
  opacity: 0;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s;
  z-index: 999;
  white-space: nowrap;
}
.toast--show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.sidebar--open {
  width: 260px !important;
}

@media (max-width: 700px) {
  .panels {
    grid-template-columns: 1fr;
    height: 300px;
  }
  .topbar__hint {
    display: none;
  }
}