:root {
  color-scheme: dark;
  --bg: #090d16;
  --panel: rgba(18, 25, 39, 0.9);
  --panel-strong: #151d2d;
  --panel-soft: #111827;
  --line: rgba(148, 163, 184, 0.18);
  --text: #f8fafc;
  --muted: #9ca9bc;
  --accent: #7c3aed;
  --accent-2: #4f46e5;
  --accent-light: #a78bfa;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #fb7185;
  --info: #60a5fa;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  --radius: 22px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 20% 0%, rgba(79, 70, 229, 0.18), transparent 34rem),
    radial-gradient(circle at 100% 40%, rgba(124, 58, 237, 0.14), transparent 30rem),
    var(--bg);
  color: var(--text);
}

button, input { font: inherit; }
button { color: inherit; }

.background-orb {
  position: fixed;
  width: 28rem;
  height: 28rem;
  border-radius: 999px;
  filter: blur(100px);
  pointer-events: none;
  opacity: 0.16;
}
.orb-one { top: -10rem; right: -8rem; background: #8b5cf6; }
.orb-two { bottom: -12rem; left: -9rem; background: #2563eb; }

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 32px;
  position: relative;
  z-index: 1;
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.eyebrow, .section-kicker {
  margin: 0 0 8px;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.73rem;
  font-weight: 800;
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 12px;
  font-size: clamp(2.35rem, 7vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  background: linear-gradient(120deg, #ffffff 20%, #c4b5fd 60%, #93c5fd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(52, 211, 153, 0.25);
  background: rgba(16, 185, 129, 0.08);
  color: #a7f3d0;
  padding: 10px 14px;
  border-radius: 999px;
  white-space: nowrap;
  font-size: 0.86rem;
  font-weight: 700;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  border-radius: var(--radius);
}

.upload-panel { padding: 18px; margin-bottom: 22px; }
.drop-zone {
  min-height: 230px;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
  border: 1.5px dashed rgba(167, 139, 250, 0.48);
  border-radius: 17px;
  background: linear-gradient(145deg, rgba(124, 58, 237, 0.08), rgba(37, 99, 235, 0.05));
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
  outline: none;
}
.drop-zone:hover, .drop-zone:focus-visible, .drop-zone.dragging {
  transform: translateY(-2px);
  border-color: var(--accent-light);
  background: linear-gradient(145deg, rgba(124, 58, 237, 0.15), rgba(37, 99, 235, 0.09));
}
.drop-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 14px 30px rgba(79, 70, 229, 0.28);
  font-size: 1.8rem;
  font-weight: 300;
}
.drop-zone h2 { margin-bottom: 7px; font-size: 1.3rem; }
.drop-zone p { color: var(--muted); margin-bottom: 12px; }
.file-limit { color: #718096; font-size: 0.8rem; }

.selected-file {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 84px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--panel-soft);
}
.file-symbol {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: rgba(124, 58, 237, 0.14);
  color: #c4b5fd;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}
.file-details { display: grid; gap: 4px; min-width: 0; flex: 1; }
.file-details strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-details span { color: var(--muted); font-size: 0.85rem; }
.icon-button {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.5rem;
}
.icon-button:hover { background: rgba(251, 113, 133, 0.1); color: var(--danger); }

.file-list { display: grid; gap: 10px; margin-top: 16px; }
.file-row {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 84px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--panel-soft);
  cursor: pointer;
  transition: border-color 150ms ease, background 150ms ease;
}
.file-row:hover { border-color: var(--accent-light); }
.file-row.active { border-color: var(--accent-light); background: rgba(124, 58, 237, 0.1); }
.file-status {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 900;
  background: rgba(148, 163, 184, 0.16);
  color: var(--muted);
}
.file-row.status-processing .file-status { background: rgba(96, 165, 250, 0.16); color: #93c5fd; }
.file-row.status-success .file-status { background: rgba(16, 185, 129, 0.16); color: var(--success); }
.file-row.status-warning .file-status { background: rgba(245, 158, 11, 0.16); color: #fbbf24; }
.file-row.status-error .file-status { background: rgba(244, 63, 94, 0.16); color: var(--danger); }

.batch-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding: 10px 4px 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.action-panel { padding: 25px; margin-bottom: 22px; }
.text-button {
  border: 0;
  padding: 7px 9px;
  border-radius: 9px;
  background: transparent;
  color: var(--accent-light);
  cursor: pointer;
  font-weight: 750;
  font-size: 0.82rem;
}
.text-button:hover { background: rgba(124, 58, 237, 0.12); }

fieldset { margin: 0 0 24px; padding: 0; border: 0; }
legend {
  width: 100%;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
  color: #dbe5f3;
  font-size: 0.88rem;
  font-weight: 800;
}
.switch-row, .check-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 2px;
  cursor: pointer;
}
.switch-row + .switch-row, .check-row + .check-row { border-top: 1px solid rgba(148, 163, 184, 0.09); }
.switch-row > span:first-child, .check-row > span { display: grid; gap: 4px; }
.switch-row strong, .check-row strong { font-size: 0.92rem; }
.switch-row small, .check-row small { color: var(--muted); line-height: 1.45; }
.switch-row input { position: absolute; opacity: 0; pointer-events: none; }
.switch {
  width: 45px;
  height: 25px;
  flex: 0 0 auto;
  padding: 3px;
  border-radius: 999px;
  background: #30394a;
  transition: 160ms ease;
}
.switch::after {
  content: "";
  display: block;
  width: 19px;
  height: 19px;
  border-radius: 999px;
  background: #e5e7eb;
  transition: transform 160ms ease;
}
.switch-row input:checked + .switch { background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.switch-row input:checked + .switch::after { transform: translateX(20px); }
.switch-row input:focus-visible + .switch { outline: 3px solid rgba(167, 139, 250, 0.35); }
.switch-row input:disabled + .switch { opacity: 0.72; }

.advanced-options { border-top: 1px solid var(--line); padding-top: 15px; }
.advanced-options summary { cursor: pointer; color: #c7d2fe; font-weight: 800; font-size: 0.9rem; }
.advanced-options[open] summary { margin-bottom: 8px; }
.check-row { justify-content: flex-start; }
.check-row input { width: 17px; height: 17px; accent-color: var(--accent); flex: 0 0 auto; }

.state-card {
  min-height: 290px;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(17, 24, 39, 0.55);
}
.state-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 999px;
  background: rgba(52, 211, 153, 0.1);
  color: var(--success);
  font-size: 1.5rem;
  font-weight: 900;
}
.state-card h3 { margin-bottom: 8px; }
.state-card p { max-width: 420px; margin-bottom: 0; color: var(--muted); line-height: 1.6; }

.progress-state {
  min-height: 290px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(17, 24, 39, 0.55);
}
.progress-header { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
.progress-header span { color: #c4b5fd; font-variant-numeric: tabular-nums; }
.progress-track { height: 10px; overflow: hidden; border-radius: 999px; background: #273043; }
.progress-bar { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), #3b82f6); transition: width 180ms ease; }
.progress-state p { margin: 14px 0 0; color: var(--muted); }

.score-card {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 39, 0.75);
}
.score-ring {
  flex: 0 0 auto;
  width: 58px;
  height: 58px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  border-radius: 999px;
  background: rgba(52, 211, 153, 0.12);
  color: var(--success);
  font-weight: 900;
}
.score-ring span { font-size: 1.15rem; }
.score-ring small { color: var(--muted); font-size: 0.68rem; margin-left: 1px; }
.score-copy { display: grid; gap: 2px; }
.score-copy strong { font-size: 0.9rem; }
.score-copy span { color: var(--muted); font-size: 0.82rem; }
.score-card.score-good .score-ring { background: rgba(96, 165, 250, 0.14); color: var(--info); }
.score-card.score-fair .score-ring { background: rgba(251, 191, 36, 0.14); color: var(--warning); }
.score-card.score-low .score-ring,
.score-card.score-incompatible .score-ring { background: rgba(251, 113, 133, 0.16); color: var(--danger); }

.summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.summary-card { padding: 14px 12px; border: 1px solid var(--line); border-radius: 14px; background: rgba(17, 24, 39, 0.75); text-align: center; }
.summary-card span { display: block; font-size: 1.45rem; font-weight: 900; font-variant-numeric: tabular-nums; }
.summary-card small { color: var(--muted); }
.result-banner { display: grid; gap: 4px; margin-top: 14px; padding: 14px 16px; border-radius: 14px; border: 1px solid rgba(52, 211, 153, 0.22); background: rgba(16, 185, 129, 0.08); }
.result-banner.warning { border-color: rgba(251, 191, 36, 0.24); background: rgba(245, 158, 11, 0.08); }
.result-banner.error { border-color: rgba(251, 113, 133, 0.25); background: rgba(244, 63, 94, 0.08); }
.result-banner span { color: var(--muted); font-size: 0.86rem; }
.filename-field { display: grid; gap: 6px; margin-top: 14px; }
.filename-field label { font-size: 0.8rem; color: var(--muted); font-weight: 700; }
.filename-input {
  min-height: 44px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(17, 24, 39, 0.78);
  color: var(--text);
  font-size: 0.92rem;
}
.filename-input:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 2px; }
.report-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 16px 0 10px; }
.filter-group { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-button { border: 1px solid var(--line); border-radius: 9px; padding: 6px 9px; background: transparent; color: var(--muted); cursor: pointer; font-size: 0.78rem; }
.filter-button.active, .filter-button:hover { color: white; border-color: rgba(167, 139, 250, 0.45); background: rgba(124, 58, 237, 0.12); }
.report-list { max-height: 330px; overflow: auto; padding-right: 4px; }
.report-item { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 9px; padding: 11px 7px; border-top: 1px solid rgba(148, 163, 184, 0.1); }
.report-item:first-child { border-top: 0; }
.report-dot { width: 22px; height: 22px; display: grid; place-items: center; margin-top: 1px; border-radius: 999px; font-size: 0.72rem; font-weight: 900; }
.report-item.error .report-dot { color: #fecdd3; background: rgba(244, 63, 94, 0.18); }
.report-item.warning .report-dot { color: #fde68a; background: rgba(245, 158, 11, 0.16); }
.report-item.fixed .report-dot { color: #a7f3d0; background: rgba(16, 185, 129, 0.16); }
.report-item.info .report-dot { color: #bfdbfe; background: rgba(59, 130, 246, 0.16); }
.report-copy { display: grid; gap: 3px; min-width: 0; }
.report-copy strong { font-size: 0.84rem; line-height: 1.4; }
.report-copy span { color: var(--muted); font-size: 0.76rem; word-break: break-word; }
.empty-report { padding: 22px; text-align: center; color: var(--muted); }

.action-buttons { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 17px; }
.primary-button, .secondary-button {
  min-height: 44px;
  padding: 0 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 12px;
  border: 0;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, opacity 160ms ease, box-shadow 160ms ease;
}
.primary-button { background: linear-gradient(135deg, var(--accent), var(--accent-2)); box-shadow: 0 13px 28px rgba(79, 70, 229, 0.27); }
.secondary-button { border: 1px solid rgba(52, 211, 153, 0.26); background: rgba(16, 185, 129, 0.1); color: #a7f3d0; }
.primary-button:hover:not(:disabled), .secondary-button:hover { transform: translateY(-1px); }
.primary-button:disabled { cursor: not-allowed; opacity: 0.45; box-shadow: none; }

.support-note { margin-top: 14px; font-size: 0.85rem; color: var(--muted); }
.support-note a { color: #ffd166; font-weight: 700; text-decoration: none; margin-left: 4px; }
.support-note a:hover { text-decoration: underline; }

.collapsible-panel { padding: 0; margin-bottom: 22px; }
.collapsible-panel > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 25px;
}
.collapsible-panel > summary::-webkit-details-marker { display: none; }
.collapsible-panel > summary::after {
  content: "⌄";
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 1.3rem;
  line-height: 1;
  transition: transform 160ms ease;
}
.collapsible-panel[open] > summary::after { transform: rotate(180deg); }
.collapsible-panel[open] > summary { border-bottom: 1px solid var(--line); }
.collapsible-panel > summary h2 { margin: 0; font-size: 1.22rem; }
.collapsible-hint { color: var(--muted); font-size: 0.78rem; white-space: nowrap; }
.collapsible-body { padding: 20px 25px 25px; }
.collapsible-body-header { display: flex; justify-content: flex-end; margin-bottom: 6px; }

.notes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.notes-grid article { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(17, 24, 39, 0.56); }
.notes-grid strong { font-size: 0.88rem; }
.notes-grid p { margin: 7px 0 0; color: var(--muted); font-size: 0.82rem; line-height: 1.5; }
.important-note { margin: 17px 0 0; color: var(--muted); font-size: 0.85rem; }
.important-note strong { color: #fde68a; }

.report-details { margin-top: 16px; }
.report-details > summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-light);
  font-weight: 750;
  font-size: 0.84rem;
}
.report-details > summary::-webkit-details-marker { display: none; }
.report-details > summary::after {
  content: "⌄";
  transition: transform 160ms ease;
}
.report-details[open] > summary::after { transform: rotate(180deg); }
.report-details > summary:hover { text-decoration: underline; }
.report-details .report-toolbar { margin-top: 14px; }

footer { display: flex; justify-content: space-between; gap: 16px; padding: 23px 4px 0; color: #64748b; font-size: 0.78rem; }
.hidden { display: none !important; }

@media (max-width: 900px) {
  .notes-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-badge { display: none; }
}

@media (max-width: 600px) {
  .app-shell { width: min(100% - 20px, 1180px); padding-top: 28px; }
  .hero { margin-bottom: 20px; }
  .upload-panel, .action-panel { padding: 16px; }
  .collapsible-panel > summary { padding: 16px; }
  .collapsible-body { padding: 12px 16px 16px; }
  .drop-zone { min-height: 190px; }
  .collapsible-panel > summary, .report-toolbar, footer { align-items: flex-start; flex-direction: column; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .notes-grid { grid-template-columns: 1fr; }
  .action-buttons { flex-direction: column; }
  .primary-button, .secondary-button { width: 100%; }
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.language-control {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 8px 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(17, 24, 39, 0.78);
  color: var(--muted);
}

.language-control select {
  border: 0;
  outline: 0;
  padding: 3px 24px 3px 2px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-weight: 750;
}

.language-control select:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 3px;
  border-radius: 6px;
}

.language-control select:disabled {
  cursor: progress;
  opacity: 0.62;
}

.language-control option {
  background: var(--panel-strong);
  color: var(--text);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  .hero {
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

.preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(3, 6, 12, 0.72);
  backdrop-filter: blur(6px);
}
.preview-dialog {
  width: min(880px, 100%);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}
.preview-modes { display: flex; gap: 6px; flex-wrap: wrap; padding: 12px 18px; }
.preview-mode {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 6px 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
}
.preview-mode.active, .preview-mode:hover {
  color: #fff;
  border-color: rgba(167, 139, 250, 0.45);
  background: rgba(124, 58, 237, 0.12);
}
.preview-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 18px 12px;
}
.preview-nav-button {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}
.preview-nav-button:hover:not(:disabled) {
  color: #fff;
  border-color: rgba(167, 139, 250, 0.45);
  background: rgba(124, 58, 237, 0.12);
}
.preview-nav-button:disabled { opacity: 0.35; cursor: default; }
.preview-page-label { color: var(--muted); font-size: 0.82rem; min-width: 120px; text-align: center; }
.preview-body { flex: 1; min-height: 0; padding: 0 18px; }
.preview-body iframe { width: 100%; height: 60vh; border: 0; border-radius: 12px; background: #fff; }
.preview-note { margin: 0; padding: 12px 18px; color: var(--muted); font-size: 0.78rem; }