:root {
  --navy: #1f3864;
  --navy-light: #2e4f8a;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --high: #fee2e2;
  --high-text: #991b1b;
  --med: #fef9c3;
  --med-text: #854d0e;
  --low: #dcfce7;
  --low-text: #166534;
  --radius: 8px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Header ── */
header {
  background: var(--navy);
  color: #fff;
  padding: 20px 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
header h1 { font-size: 1.4rem; font-weight: 700; }
header p  { font-size: 0.85rem; opacity: 0.75; margin-top: 2px; }
.header-icon { font-size: 2rem; }

/* ── Layout ── */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* ── Upload zone ── */
.upload-row {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 16px;
  align-items: start;
}
@media (max-width: 640px) { .upload-row { grid-template-columns: 1fr; } }

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: #eff6ff;
}
.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
.drop-icon { font-size: 2.5rem; margin-bottom: 8px; }
.drop-zone p { color: var(--text-muted); font-size: 0.9rem; }
.drop-zone p strong { color: var(--accent); }
.drop-zone .file-types { font-size: 0.78rem; margin-top: 6px; }

.file-selected {
  margin-top: 12px;
  padding: 10px 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); }
.form-group input[type="text"],
.form-group input[type="password"] {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus { border-color: var(--accent); }
.form-group small { font-size: 0.78rem; color: var(--text-muted); }

/* ── Options row ── */
.options-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  cursor: pointer;
  user-select: none;
}
.toggle-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* ── Tabs ── */
.tab-bar {
  background: var(--navy);
  display: flex;
  gap: 4px;
  padding: 0 32px;
}
.tab-btn {
  padding: 12px 24px;
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.65);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn:hover  { color: rgba(255,255,255,0.9); }
.tab-btn.active { color: #fff; border-bottom-color: #60a5fa; }

/* ── Source banner (QASP tab) ── */
.source-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.source-banner-active {
  background: var(--low);
  border: 1px solid #86efac;
  color: var(--low-text);
}
.source-banner span { font-size: 1.3rem; flex-shrink: 0; }
.source-banner p    { font-size: 0.82rem; margin-top: 2px; opacity: 0.8; }
.btn-link {
  margin-left: auto;
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.82rem;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, opacity 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-success { background: #16a34a; color: #fff; font-size: 1rem; padding: 13px 28px; }
.btn-success:hover { background: #15803d; }
.btn-secondary { background: var(--navy); color: #fff; }
.btn-secondary:hover { background: var(--navy-light); }

/* ── Progress ── */
#progress-section { display: none; }
.progress-bar-outer {
  height: 10px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 12px 0 8px;
}
.progress-bar-inner {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.4s ease;
  width: 0%;
}
.progress-msg { font-size: 0.85rem; color: var(--text-muted); }

/* ── Alerts ── */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.alert-error   { background: var(--high); color: var(--high-text); border: 1px solid #fca5a5; }
.alert-success { background: var(--low);  color: var(--low-text);  border: 1px solid #86efac; }
.alert-info    { background: #eff6ff;     color: #1e40af;          border: 1px solid #bfdbfe; }

/* ── Preview table ── */
#results-section { display: none; }
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}
.stats-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.stat-chip {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}
.stat-chip.high   { background: var(--high); color: var(--high-text); }
.stat-chip.med    { background: var(--med);  color: var(--med-text); }
.stat-chip.low    { background: var(--low);  color: var(--low-text); }
.stat-chip.total  { background: #e0e7ff; color: #3730a3; }

.table-scroll { overflow-x: auto; border-radius: 6px; border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
thead th {
  background: var(--navy);
  color: #fff;
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
  font-weight: 600;
  position: sticky;
  top: 0;
}
tbody tr:nth-child(even) { background: #f8fafc; }
tbody tr:hover { background: #eff6ff; }
tbody td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  max-width: 380px;
}
.req-id   { font-family: monospace; font-weight: 700; color: var(--navy); white-space: nowrap; }
.req-text { max-width: 380px; }
.priority-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}
.priority-High   { background: var(--high); color: var(--high-text); }
.priority-Medium { background: var(--med);  color: var(--med-text); }
.priority-Low    { background: var(--low);  color: var(--low-text); }
.type-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  background: #e0e7ff;
  color: #3730a3;
  white-space: nowrap;
}

/* ── How-to section ── */
.how-to { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.step {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.step-num {
  width: 32px; height: 32px;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.step h3 { font-size: 0.9rem; font-weight: 600; }
.step p  { font-size: 0.82rem; color: var(--text-muted); }

/* ── Footer ── */
footer {
  text-align: center;
  padding: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-top: 12px;
}
footer a { color: var(--accent); text-decoration: none; }