:root {
  color-scheme: light;
  --bg: #f7f5ef;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #697586;
  --border: #d9e2ec;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --success: #057a55;
  --danger: #c81e1e;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 32rem),
    var(--bg);
  color: var(--text);
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.hero { margin-bottom: 28px; }

.eyebrow {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
  text-transform: uppercase;
}

h1, h2 { margin: 0; line-height: 1.15; }
h1 { font-size: clamp(2rem, 6vw, 4rem); letter-spacing: -0.05em; }
h2 { font-size: 1.2rem; }

.description {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 16px 0 0;
}

.card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(217, 226, 236, 0.9);
  border-radius: 24px;
  box-shadow: var(--shadow);
  margin-top: 18px;
  padding: 24px;
}

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 18px;
  margin-top: 18px;
}

.field { display: flex; flex-direction: column; gap: 8px; }
.field-wide { grid-column: 1 / -1; }
.field span { font-weight: 700; }

input, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  font: inherit;
  outline: none;
  padding: 13px 14px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
}

small, .muted { color: var(--muted); }

.drop-zone {
  align-items: center;
  border: 2px dashed #9fb3c8;
  border-radius: 22px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
  margin-top: 18px;
  min-height: 220px;
  padding: 28px;
  text-align: center;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.drop-zone:hover, .drop-zone:focus, .drop-zone.is-dragging {
  background: rgba(37, 99, 235, 0.06);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.drop-zone p { margin: 0; }
.drop-icon { color: var(--accent); font-size: 3rem; line-height: 1; }

.file-list { display: grid; gap: 10px; margin: 16px 0; }
.file-item {
  align-items: center;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
}

.primary-button, .secondary-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 12px 18px;
  transition: opacity 160ms ease, transform 160ms ease, background 160ms ease;
}

.primary-button {
  background: var(--accent);
  color: #fff;
  min-width: 148px;
}

.secondary-button { background: #e5edff; color: var(--accent-dark); }
button:hover:not(:disabled) { transform: translateY(-1px); }
button:disabled { cursor: not-allowed; opacity: 0.52; }

.results-header {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
}

.status { margin-top: 14px; min-height: 24px; }
.status.success { color: var(--success); }
.status.error { color: var(--danger); }

.results { display: grid; gap: 14px; margin-top: 16px; }
.result-item {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.result-item h3 { font-size: 1rem; margin: 0 0 12px; }
.result-field { margin-top: 10px; }
.result-field span { color: var(--muted); display: block; font-size: 0.86rem; margin-bottom: 5px; }
.result-field code {
  background: #eef2f7;
  border-radius: 10px;
  display: block;
  overflow-x: auto;
  padding: 10px;
  white-space: nowrap;
}

@media (max-width: 700px) {
  .shell { width: min(100% - 20px, 960px); padding: 28px 0; }
  .card { border-radius: 18px; padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .results-header { align-items: stretch; flex-direction: column; }
  .secondary-button, .primary-button { width: 100%; }
}