:root {
  color-scheme: dark;
  --bg: #030711;
  --bg-accent: #071221;
  --panel: rgba(10, 19, 34, 0.82);
  --panel-strong: rgba(8, 16, 30, 0.96);
  --border: rgba(121, 170, 255, 0.16);
  --border-strong: rgba(143, 190, 255, 0.28);
  --text: #edf4ff;
  --muted: #98a8c3;
  --accent: #73b7ff;
  --accent-strong: #9aceff;
  --danger: #ff6b7f;
  --success: #6fe0b0;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(64, 116, 196, 0.22), transparent 30%),
    radial-gradient(circle at top right, rgba(18, 66, 140, 0.18), transparent 25%),
    linear-gradient(180deg, #050914 0%, #02050d 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(115, 183, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(115, 183, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 85%);
}

.page-shell {
  width: min(1200px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 48px 0 56px;
}

.hero {
  margin-bottom: 28px;
}

.eyebrow,
.panel-kicker,
.field-label,
.slider-label,
.reference-copy,
.status-box,
.alignment-line-label,
.alignment-empty {
  color: var(--muted);
}

.eyebrow,
.panel-kicker {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.8rem, 7vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.hero-copy {
  max-width: 700px;
  margin-top: 18px;
  line-height: 1.6;
  font-size: 1rem;
  color: #c1d2eb;
}

.table-source-bar {
  max-width: 720px;
  margin-top: 18px;
}

.table-source-controls {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.inline-code {
  display: inline-block;
  border: 1px solid rgba(143, 190, 255, 0.16);
  border-radius: 8px;
  padding: 2px 8px;
  background: rgba(8, 16, 30, 0.8);
  color: var(--accent-strong);
  font: 500 0.82rem/1.2 "IBM Plex Mono", monospace;
}

.table-file-picker {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.table-file-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.noise-presets {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.error-presets {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.error-presets-title {
  margin: 0;
  width: 100%;
  font-size: 0.82rem;
  color: var(--muted);
}

.noise-presets label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
}

.error-presets label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
}

.layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  position: relative;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(14, 24, 42, 0.96), var(--panel));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.input-panel,
.output-panel {
  grid-column: span 6;
}

.alignment-panel,
.reference-panel {
  grid-column: 1 / -1;
}

.panel-head,
.inline-actions,
.checkbox-row,
.panel-actions {
  display: flex;
  align-items: center;
}

.panel-head,
.inline-actions {
  justify-content: space-between;
}

.panel-head {
  margin-bottom: 14px;
}

.panel-actions {
  gap: 10px;
}

.field-label,
.slider-label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.88rem;
}

textarea,
input[type="range"] {
  width: 100%;
}

textarea {
  min-height: 240px;
  resize: vertical;
  border: 1px solid rgba(143, 190, 255, 0.12);
  border-radius: 18px;
  padding: 16px;
  background: var(--panel-strong);
  color: var(--text);
  font: 400 0.98rem/1.55 "IBM Plex Mono", monospace;
  transition: border-color 160ms ease, transform 160ms ease;
}

textarea:focus {
  outline: none;
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.char-counter {
  margin: 8px 4px 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.text-issue-preview {
  margin-top: 12px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 107, 127, 0.28);
  border-radius: 16px;
  background: rgba(46, 10, 18, 0.5);
}

.text-issue-label {
  margin: 0 0 8px;
  color: #ffc7cf;
  font-size: 0.82rem;
}

.text-issue-copy {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font: 400 0.94rem/1.55 "IBM Plex Mono", monospace;
  color: var(--text);
}

.text-issue-char {
  color: #ff7d8f;
  font-weight: 700;
  text-decoration: underline;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 11px 16px;
  font: 600 0.92rem/1 "Space Grotesk", sans-serif;
  cursor: pointer;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease;
}

button:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: linear-gradient(135deg, #7ac3ff, #4a8fff);
  color: #031120;
}

.secondary-button,
.ghost-button {
  color: var(--text);
}

.secondary-button {
  background: rgba(64, 116, 196, 0.2);
}

.ghost-button {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.inline-actions {
  margin-top: 14px;
  gap: 12px;
}

.split-actions {
  justify-content: flex-start;
}

.option-box {
  margin-top: 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(7, 16, 30, 0.68);
  border: 1px solid rgba(121, 170, 255, 0.1);
}

.checkbox-row {
  gap: 12px;
  margin-bottom: 14px;
}

.checkbox-row input {
  width: 18px;
  height: 18px;
}

.noise-presets input {
  width: 16px;
  height: 16px;
}

.error-presets input {
  width: 16px;
  height: 16px;
}

input[type="range"] {
  accent-color: var(--accent);
}

.status-box {
  min-height: 56px;
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(143, 190, 255, 0.08);
  background: rgba(4, 10, 20, 0.8);
  line-height: 1.5;
}

.status-box.is-error {
  color: #ffd7dd;
  border-color: rgba(255, 107, 127, 0.26);
  background: rgba(58, 13, 24, 0.52);
}

.status-box.is-success {
  color: #d8ffef;
  border-color: rgba(111, 224, 176, 0.22);
  background: rgba(7, 42, 31, 0.56);
}

.mono {
  font-family: "IBM Plex Mono", monospace;
}

.reference-copy {
  margin-bottom: 16px;
  line-height: 1.6;
}

.alignment-view {
  display: grid;
  gap: 14px;
}

.alignment-line {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(143, 190, 255, 0.08);
  background: rgba(4, 11, 21, 0.7);
}

.alignment-line-label {
  margin-bottom: 12px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.alignment-track {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, max-content));
  gap: 10px;
}

.alignment-cell {
  min-width: 0;
  border-radius: 14px;
  border: 1px solid rgba(143, 190, 255, 0.08);
  overflow: hidden;
  background: rgba(9, 18, 34, 0.88);
}

.alignment-cell.is-empty {
  max-width: 150px;
}

.alignment-code,
.alignment-text {
  padding: 10px 12px;
  text-align: center;
  white-space: pre-wrap;
  word-break: break-word;
}

.alignment-code {
  border-bottom: 1px solid rgba(143, 190, 255, 0.08);
  background: rgba(16, 34, 62, 0.72);
  color: var(--accent-strong);
}

.alignment-text {
  color: var(--text);
}

.alignment-empty {
  padding: 10px 0;
}

.reference-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.reference-row {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 12px;
}

.reference-card {
  justify-self: start;
  width: fit-content;
  max-width: 100%;
  padding: 7px 9px;
  border-radius: 16px;
  border: 1px solid rgba(143, 190, 255, 0.08);
  background: rgba(4, 11, 21, 0.75);
}

.reference-card strong {
  display: inline-block;
  margin-right: 8px;
}

.reference-card code {
  font-family: "IBM Plex Mono", monospace;
  color: var(--accent-strong);
}

.reference-card.is-empty {
  opacity: 0.58;
  border-style: dashed;
}

@media (max-width: 1024px) {
  .reference-row {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .reference-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) {
  .input-panel,
  .output-panel {
    grid-column: span 12;
  }
}

@media (max-width: 720px), (hover: none) and (pointer: coarse) {
  .page-shell {
    width: min(100%, 640px);
    padding: 14px;
  }

  body {
    background: #07090d;
  }

  body::before {
    display: none;
  }

  .hero {
    margin-bottom: 14px;
  }

  h1 {
    max-width: none;
    font-size: 1.8rem;
    line-height: 1.05;
    letter-spacing: -0.02em;
  }

  .hero-copy {
    max-width: none;
    margin-top: 10px;
    line-height: 1.45;
    font-size: 0.92rem;
  }

  .layout {
    gap: 10px;
    margin-top: 14px;
  }

  .table-source-bar {
    margin-top: 14px;
  }

  .table-source-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .table-source-controls .table-file-trigger,
  .table-source-controls .inline-code {
    width: 100%;
  }

  .panel {
    padding: 12px;
    border-radius: 14px;
    background: #111722;
    box-shadow: none;
    backdrop-filter: none;
  }

  .panel-head,
  .inline-actions,
  .checkbox-row,
  .panel-actions {
    align-items: center;
    flex-direction: row;
    gap: 8px;
    flex-wrap: wrap;
  }

  .panel-actions,
  .split-actions {
    width: auto;
  }

  .alignment-track {
    grid-template-columns: 1fr;
  }

  textarea {
    min-height: 120px;
    border-radius: 10px;
    padding: 10px;
    font-size: 0.95rem;
  }

  button {
    padding: 9px 12px;
    font-size: 0.86rem;
  }

  .option-box {
    margin-top: 10px;
    padding: 12px;
    border-radius: 12px;
  }
}