:root {
  color-scheme: dark;
  --bg: #090a0c;
  --panel: #111317;
  --panel-2: #151820;
  --line: rgba(255, 255, 255, 0.08);
  --muted: #818894;
  --text: #e7eaf0;
  --accent: #e9a33b;
  --accent-2: #f6c768;
  --green: #54d49b;
  --red: #ff7484;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 75% -10%, rgba(233, 163, 59, 0.1), transparent 33rem),
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--bg);
  background-size: auto, 32px 32px, 32px 32px, auto;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
}

a {
  color: var(--accent-2);
}

code,
.mono {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

.app {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 64px;
}

.back-link {
  display: inline-block;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
}

.back-link:hover {
  color: var(--text);
}

header {
  max-width: 760px;
  margin-bottom: 32px;
}

.eyebrow,
.kicker {
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2.35rem, 6vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

h1 span {
  color: var(--accent-2);
}

.subtitle {
  max-width: 700px;
  margin-bottom: 0;
  color: #a4abb6;
  font-size: clamp(1rem, 2vw, 1.12rem);
}

.subtitle code {
  color: var(--text);
  font-size: 0.9em;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  margin: 28px 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--line);
}

.intro-grid article {
  min-height: 150px;
  padding: 22px;
  background: rgba(17, 19, 23, 0.94);
}

.step-number {
  margin-bottom: 19px;
  color: var(--accent);
  font: 700 0.7rem "JetBrains Mono", Consolas, monospace;
}

.intro-grid h2 {
  margin-bottom: 5px;
  font-size: 1rem;
}

.intro-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.panel {
  margin: 18px 0;
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(17, 19, 23, 0.96);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.24);
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 19px;
}

.panel h2 {
  margin: 3px 0 0;
  font-size: 1.15rem;
}

.local-badge {
  padding: 5px 10px;
  border: 1px solid rgba(84, 212, 155, 0.25);
  border-radius: 999px;
  color: var(--green);
  background: rgba(84, 212, 155, 0.07);
  font-size: 0.7rem;
  font-weight: 750;
  white-space: nowrap;
}

.drop-zone {
  display: flex;
  min-height: 230px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 28px;
  border: 1.5px dashed rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  color: #626976;
  background: rgba(0, 0, 0, 0.16);
  cursor: pointer;
  text-align: center;
  transition: 150ms ease;
}

.drop-zone:hover,
.drop-zone:focus,
.drop-zone.dragover {
  outline: none;
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(233, 163, 59, 0.035);
  box-shadow: 0 0 0 4px rgba(233, 163, 59, 0.055);
}

.drop-zone.loaded {
  border-style: solid;
  border-color: rgba(84, 212, 155, 0.48);
  color: var(--green);
}

.drop-zone input {
  display: none;
}

.drop-zone svg {
  margin-bottom: 15px;
}

.drop-zone strong {
  color: var(--text);
  font-size: 1rem;
}

#dropHint {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.8rem;
}

.file-chip {
  max-width: 100%;
  margin-top: 17px;
  padding: 7px 11px;
  overflow: hidden;
  border: 1px solid rgba(84, 212, 155, 0.18);
  border-radius: 7px;
  color: var(--green);
  background: rgba(84, 212, 155, 0.06);
  font: 600 0.76rem "JetBrains Mono", Consolas, monospace;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.settings {
  margin: 18px 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.setting {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 16px;
  background: var(--panel-2);
}

.setting + .setting {
  border-top: 1px solid var(--line);
}

.setting strong,
.setting small {
  display: block;
}

.setting strong {
  font-size: 0.84rem;
}

.setting small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.74rem;
}

select {
  min-width: 176px;
  padding: 9px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 7px;
  color: var(--text);
  background: #0d0f12;
  font: 600 0.75rem "JetBrains Mono", Consolas, monospace;
}

input[type="checkbox"] {
  width: 38px;
  height: 21px;
  flex: 0 0 auto;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: #08090b;
  appearance: none;
  cursor: pointer;
  transition: 150ms ease;
}

input[type="checkbox"]::after {
  content: "";
  display: block;
  width: 15px;
  height: 15px;
  margin: 2px;
  border-radius: 50%;
  background: #646b76;
  transition: 150ms ease;
}

input[type="checkbox"]:checked {
  border-color: var(--accent);
  background: rgba(233, 163, 59, 0.16);
}

input[type="checkbox"]:checked::after {
  background: var(--accent-2);
  transform: translateX(17px);
}

.primary-button,
.download-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border: 0;
  border-radius: 8px;
  color: #171108;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 8px 22px rgba(233, 163, 59, 0.15);
  font: 800 0.8rem Inter, system-ui, sans-serif;
  cursor: pointer;
  text-decoration: none;
  transition: 150ms ease;
}

.primary-button {
  width: 100%;
}

.primary-button:hover:not(:disabled),
.download-button:hover {
  color: #171108;
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.primary-button:disabled {
  color: #5f6269;
  background: #1a1c21;
  box-shadow: none;
  cursor: not-allowed;
}

.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(0, 0, 0, 0.25);
  border-top-color: #171108;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status {
  min-height: 1.3em;
  margin: 11px 0 -5px;
  color: var(--muted);
  font-size: 0.76rem;
  text-align: center;
}

.status.error {
  color: var(--red);
}

.result-panel {
  animation: reveal 220ms ease both;
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(7px); }
}

.result-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.success-label {
  color: var(--green);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
  margin-bottom: 18px;
}

.stat {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.018);
}

.stat-label {
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stat-value {
  margin-top: 5px;
  font: 750 1rem "JetBrains Mono", Consolas, monospace;
}

.savings {
  color: var(--green);
}

.result-note,
.empty-result {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.table-wrap {
  max-height: 360px;
  overflow: auto;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 9px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.045);
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  color: var(--muted);
  background: #15171c;
  font-size: 0.63rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

td {
  font-family: "JetBrains Mono", Consolas, monospace;
}

tr:last-child td {
  border-bottom: 0;
}

.skip-summary {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.75rem;
}

.notes h2 {
  margin-bottom: 19px;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.note-grid > div {
  padding: 16px;
  border-left: 2px solid rgba(233, 163, 59, 0.5);
  background: rgba(255, 255, 255, 0.018);
}

.note-grid h3 {
  margin-bottom: 5px;
  font-size: 0.8rem;
}

.note-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.warning {
  margin-top: 16px;
  padding: 13px 15px;
  border: 1px solid rgba(246, 199, 104, 0.16);
  border-radius: 8px;
  color: #b9a983;
  background: rgba(246, 199, 104, 0.045);
  font-size: 0.76rem;
}

footer {
  max-width: 760px;
  margin: 28px auto 0;
  color: #656c76;
  font-size: 0.7rem;
  text-align: center;
}

footer a {
  color: #9299a4;
}

@media (max-width: 700px) {
  .app {
    width: min(100% - 24px, 980px);
    padding-top: 24px;
  }

  .intro-grid,
  .note-grid {
    grid-template-columns: 1fr;
  }

  .intro-grid article {
    min-height: auto;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .setting,
  .result-top {
    align-items: stretch;
    flex-direction: column;
  }

  select {
    width: 100%;
  }

  .checkbox-setting {
    flex-direction: row;
    align-items: center;
  }

  .download-button {
    width: 100%;
  }
}