:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #16181d;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --ok: #12855a;
  --warn: #b45309;
  --warn-bg: #fef6e7;
  --err: #c22b2b;
  --err-bg: #fdecec;
  --info-bg: #eef2fb;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16,24,40,.05), 0 8px 24px rgba(16,24,40,.06);
}

* { box-sizing: border-box; }

/* The hidden attribute must win over any display rule below - several
   components here use display:flex/grid and would otherwise stay visible. */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body.centered {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

h1 { font-size: 17px; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 19px; margin: 0 0 6px; letter-spacing: -.01em; }
h3 { font-size: 15px; margin: 0 0 4px; }
p  { margin: 0 0 4px; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.link  { color: var(--accent); text-decoration: underline; }

/* ---------- layout ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 24px;
  background: var(--card); border-bottom: 1px solid var(--line);
}
.topbar-right { display: flex; align-items: center; gap: 12px; }
.wrap { max-width: 720px; margin: 28px auto 64px; padding: 0 20px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--accent); color: var(--accent-ink);
  display: grid; place-items: center;
  font-size: 20px; font-weight: 600; flex: none;
}

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 26px;
}
.login-card { width: min(400px, 100%); }
.login-card .brand { margin-bottom: 22px; }

/* ---------- forms ---------- */
label { display: block; font-weight: 550; font-size: 13px; margin: 14px 0 6px; }

input[type=text], input[type=password] {
  width: 100%; padding: 10px 12px; font-size: 15px;
  border: 1px solid var(--line); border-radius: 9px;
  background: #fff; color: var(--ink);
}
input[type=text]:focus, input[type=password]:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.14);
}

button, .primary { font: inherit; cursor: pointer; }

.primary {
  display: inline-block; text-align: center; text-decoration: none;
  background: var(--accent); color: var(--accent-ink);
  border: none; border-radius: 9px; padding: 11px 18px; font-weight: 550;
}
.primary:hover:not(:disabled) { background: #1d4fd0; }
.primary:disabled { background: #b9c4d8; cursor: not-allowed; }
.wide { width: 100%; margin-top: 20px; }

.ghost {
  background: transparent; border: 1px solid var(--line);
  border-radius: 9px; padding: 9px 14px; color: var(--ink);
}
.ghost:hover { background: #f0f2f5; }
.ghost.small { padding: 2px 8px; border: none; font-size: 15px; }

.form-error {
  margin-top: 14px; padding: 10px 12px; border-radius: 9px;
  background: var(--err-bg); color: var(--err);
  font-size: 13.5px; border: 1px solid #f6cccc;
}

/* ---------- dropzone ---------- */
.dropzone {
  margin-top: 18px; padding: 34px 20px; text-align: center;
  border: 1.5px dashed #c8cfdb; border-radius: var(--radius);
  background: #fafbfc; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone:focus-visible {
  border-color: var(--accent); background: #f6f9ff; outline: none;
}
.dropzone.dragover {
  border-color: var(--accent); background: #eef4ff; border-style: solid;
}
.dz-icon { width: 30px; height: 30px; color: var(--accent); margin-bottom: 8px; }
.dz-main { font-weight: 500; margin-bottom: 2px; }

.file-chip {
  margin-top: 14px; padding: 10px 12px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--info-bg); border-radius: 9px; font-size: 14px;
}

/* ---------- options ---------- */
.options {
  margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line);
  display: grid; gap: 16px;
}
.option-label {
  display: block; font-weight: 550; font-size: 13px; margin-bottom: 8px;
}
.segmented {
  display: inline-flex; padding: 3px; gap: 3px;
  background: #eef0f4; border-radius: 10px;
}
.seg {
  border: none; background: transparent; color: var(--muted);
  padding: 8px 14px; border-radius: 8px; font-size: 14px; font-weight: 500;
}
.seg.active { background: #fff; color: var(--ink); box-shadow: var(--shadow); }

.switch-row {
  display: flex; gap: 11px; align-items: flex-start;
  margin: 0; font-weight: 400; cursor: pointer;
}
.switch-row input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--accent); }
.switch-row span span { display: block; margin-top: 2px; }

/* ---------- progress ---------- */
.progress-track {
  height: 8px; background: #e8ebf0; border-radius: 99px;
  overflow: hidden; margin: 20px 0 10px;
}
.progress-fill {
  height: 100%; width: 0%; background: var(--accent);
  border-radius: 99px; transition: width .45s cubic-bezier(.4,0,.2,1);
}
.progress-message { font-size: 14px; color: var(--muted); }

.stages { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.stages li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--muted);
}
.stages .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: #d3d8e0; flex: none;
}
.stages li.active { color: var(--ink); font-weight: 550; }
.stages li.active .dot { background: var(--accent); box-shadow: 0 0 0 4px rgba(37,99,235,.16); }
.stages li.complete { color: var(--ink); }
.stages li.complete .dot { background: var(--ok); }

/* ---------- result ---------- */
.result-head { display: flex; gap: 14px; align-items: center; }
.check {
  width: 38px; height: 38px; border-radius: 50%; flex: none;
  background: #e6f6ee; color: var(--ok);
  display: grid; place-items: center; font-size: 19px; font-weight: 700;
}
.check.failed { background: var(--err-bg); color: var(--err); }
.result-actions { display: flex; gap: 10px; margin-top: 22px; flex-wrap: wrap; }

.qa { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }
.qa-summary { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0 14px; }
.pill {
  padding: 3px 10px; border-radius: 99px; font-size: 12.5px; font-weight: 550;
}
.pill.info  { background: var(--info-bg); color: #2b4a9c; }
.pill.preserved { background: #e6f6ee; color: var(--ok); }
.pill.warning { background: var(--warn-bg); color: var(--warn); }
.pill.error { background: var(--err-bg);  color: var(--err); }

.qa-item {
  padding: 10px 12px; border-radius: 9px; margin-bottom: 8px;
  font-size: 13.5px; border-left: 3px solid transparent; background: #fafbfc;
}
.qa-item.info    { border-left-color: #7b9ae0; }
.qa-item.warning { border-left-color: #e0a23c; background: var(--warn-bg); }
.qa-item.error   { border-left-color: #d05a5a; background: var(--err-bg); }
.qa-item .excerpt {
  display: block; margin-top: 4px; color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px;
}
.qa-more {
  background: none; border: none; color: var(--accent);
  padding: 4px 0; font-size: 13.5px; text-decoration: underline;
}

/* ---------- toasts ---------- */
.toasts {
  position: fixed; top: 16px; right: 16px; z-index: 50;
  display: grid; gap: 8px; max-width: min(380px, calc(100vw - 32px));
}
.toast {
  padding: 12px 14px; border-radius: 10px; box-shadow: var(--shadow);
  font-size: 14px; background: var(--card); border: 1px solid var(--line);
  display: flex; gap: 10px; align-items: flex-start;
  animation: slide-in .22s ease-out;
}
.toast.error   { background: var(--err-bg);  border-color: #f2c4c4; color: #8f1f1f; }
.toast.warning { background: var(--warn-bg); border-color: #f0d9a8; color: #7c4a06; }
.toast.success { background: #e9f7f0; border-color: #b9e2cd; color: #0d6b48; }
.toast button {
  background: none; border: none; color: inherit; opacity: .55;
  cursor: pointer; font-size: 16px; line-height: 1; padding: 0; margin-left: auto;
}
@keyframes slide-in { from { opacity: 0; transform: translateX(12px); } }

@media (max-width: 560px) {
  .topbar { padding: 12px 16px; }
  .card { padding: 20px; }
  .segmented { width: 100%; }
  .seg { flex: 1; }
}