:root {
  --accent: #2563eb;
  --accent-dark: #1e4fce;
  --accent-soft: #eaf1ff;
  --bg: #f7f8fa;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --success: #0f9d58;
  --danger: #d64545;
  --amber: #ad7a21;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

h1, h2 { margin: 0 0 8px 0; font-weight: 650; letter-spacing: -0.01em; }
h2 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--text-muted); }

/* ---------- Brand mark ---------- */

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--accent);
  display: inline-block;
  flex: none;
  vertical-align: middle;
}

/* ---------- Login page ---------- */

.login-body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 36px;
  width: 320px;
}

.login-card .brand-row { display: flex; align-items: center; gap: 9px; margin-bottom: 2px; }
.login-card h1 { font-size: 20px; }
.subtitle { color: var(--text-muted); margin: 0 0 20px 0; font-size: 14px; }

.login-card label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin: 12px 0 4px;
}

input[type="text"], input[type="password"], input[type="number"] {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}

input[type="text"]:focus, input[type="password"]:focus, input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

.error-text {
  color: var(--danger);
  font-size: 13px;
  margin-top: 10px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: filter .1s ease, border-color .1s ease;
}
.btn:hover { filter: brightness(0.96); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-ghost { background: transparent; color: var(--text-muted); border-color: var(--border); }
.btn-ghost:hover { color: var(--text); border-color: #c7cfdb; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-block { width: 100%; margin-top: 18px; }
.btn-lg { padding: 12px 24px; font-size: 15px; font-weight: 650; }
.btn-icon { padding: 4px 9px; font-size: 13px; line-height: 1; }

/* ---------- App shell ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.topbar .brand-row { display: flex; align-items: center; gap: 10px; }
.topbar h1 { font-size: 16px; margin: 0; display: flex; align-items: baseline; gap: 8px; }
.tagline { font-weight: 400; color: var(--text-muted); font-size: 13px; }
.topbar-right { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--text-muted); }

.layout {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.mid-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.3fr;
  gap: 18px;
}
@media (max-width: 860px) {
  .mid-row { grid-template-columns: 1fr; }
}

.hint { font-size: 12px; color: var(--text-muted); margin: 4px 0 8px; }
.hint.indent { margin-left: 26px; margin-top: -2px; }

/* ---------- Dropzone ---------- */

.dropzone {
  border: 1.5px dashed var(--border);
  border-radius: calc(var(--radius) - 1px);
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  transition: border-color .15s ease, background .15s ease;
}
.dropzone .file-icon { flex: none; color: var(--text-muted); }
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: var(--accent-soft); }
.dropzone.has-file { color: var(--text); border-style: solid; border-color: var(--accent); }
.dropzone.has-file .file-icon { color: var(--accent); }

/* ---------- Qty rows ---------- */

.qty-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.qty-row input[type="number"] { width: 130px; font-variant-numeric: tabular-nums; }
.qty-row .unit-label { font-size: 13px; color: var(--text-muted); }

/* ---------- Distributor rows ---------- */

.dist-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
}
.dist-row .dist-name { flex: 1; font-size: 14px; }
.dist-row .dist-rate { font-size: 11px; color: var(--text-muted); }

/* ---------- Search mode ---------- */

.radio-row, .checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin: 6px 0;
}
.radio-row small, .checkbox-row small { color: var(--text-muted); font-weight: 400; }
hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }

/* ---------- Run / progress ---------- */

.run-row { display: flex; gap: 12px; align-items: center; }

.progress-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}
.progress-track {
  flex: 1;
  height: 7px;
  border-radius: 4px;
  background: var(--border);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width .2s ease;
}
#progress-label { font-size: 12px; font-variant-numeric: tabular-nums; color: var(--text-muted); width: 70px; text-align: right; }

/* ---------- Log ---------- */

.log-card { padding-bottom: 10px; }
#log-box {
  margin: 0;
  height: 320px;
  overflow-y: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  padding: 10px 12px;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}