/* =========================================================================
   Usage — design system
   A calm, trustworthy medical-software look. White cards on a soft neutral
   background, one teal accent, generous spacing, large readable type.
   ========================================================================= */

/* ----------------------------- Tokens ---------------------------------- */
:root {
  /* Brand / accent (calm medical teal-blue) */
  --teal-700: #0c5d6b;
  --teal-600: #107a8b;
  --teal-500: #1593a6;
  --teal-100: #d6eef2;
  --teal-050: #eef8fa;

  /* Neutrals */
  --ink-900: #16242b;   /* primary text */
  --ink-700: #34474f;
  --ink-500: #5d6e75;   /* secondary text */
  --ink-300: #93a1a7;
  --line:    #e2e8ea;   /* borders / hairlines */
  --bg:      #f4f6f7;   /* page background */
  --card:    #ffffff;

  /* Status */
  --green-600: #1f8b56;
  --green-050: #e9f6ef;
  --amber-cell: #fff2cc;   /* exact legend amber */
  --amber-line: #d9a300;
  --red-cell:  #f4cccc;    /* exact legend red */
  --red-600:   #c0392b;
  --red-050:   #fdecea;

  /* Typography */
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --fs-base: 16px;

  /* Spacing scale */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-7: 32px; --s-8: 40px; --s-9: 56px;

  /* Radius */
  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-pill: 999px;

  /* Shadow / focus */
  --shadow-sm: 0 1px 2px rgba(22,36,43,.06), 0 1px 3px rgba(22,36,43,.04);
  --shadow-md: 0 2px 6px rgba(22,36,43,.07), 0 8px 24px rgba(22,36,43,.06);
  --focus: 0 0 0 3px rgba(21,147,166,.45);

  --maxw: 1180px;
}

/* ----------------------------- Reset ----------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: 1.55;
  color: var(--ink-900);
  background: var(--bg);
}
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; }
a { color: var(--teal-600); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--s-6); }

/* Accessibility helpers */
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--s-4); top: -48px;
  background: var(--teal-600); color: #fff; padding: var(--s-2) var(--s-4);
  border-radius: var(--r-sm); z-index: 100; transition: top .15s ease;
}
.skip-link:focus { top: var(--s-4); }

:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--r-sm); }

/* ----------------------------- Header ---------------------------------- */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-4); padding: var(--s-5) var(--s-6);
}
.brand { display: flex; align-items: center; gap: var(--s-4); }
.brand-mark { color: var(--teal-600); display: inline-flex; flex: none; }
.brand-name { font-size: 1.5rem; line-height: 1.1; letter-spacing: -.01em; }
.brand-tagline { color: var(--ink-500); font-size: .95rem; }

.header-status { display: flex; align-items: center; gap: var(--s-2); color: var(--ink-500); font-size: .9rem; white-space: nowrap; }
.health-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ink-300); flex: none; }
.health-dot.is-ok   { background: var(--green-600); box-shadow: 0 0 0 3px var(--green-050); }
.health-dot.is-down { background: var(--red-600);   box-shadow: 0 0 0 3px var(--red-050); }
.health-dot.is-unknown { background: var(--ink-300); }

/* ----------------------------- Help panel ------------------------------ */
.help-wrap { margin-top: var(--s-6); }
.help-panel {
  background: var(--teal-050);
  border: 1px solid var(--teal-100);
  border-radius: var(--r-md);
  overflow: hidden;
}
.help-summary {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-4) var(--s-5); cursor: pointer; font-weight: 600;
  color: var(--teal-700); list-style: none; user-select: none;
}
.help-summary::-webkit-details-marker { display: none; }
.help-icon { display: inline-flex; color: var(--teal-600); }
.help-chevron { margin-left: auto; display: inline-flex; transition: transform .2s ease; color: var(--teal-600); }
.help-panel[open] .help-chevron { transform: rotate(180deg); }
.help-body { padding: 0 var(--s-5) var(--s-5) var(--s-5); color: var(--ink-700); }
.help-steps { display: grid; gap: var(--s-2); margin-top: var(--s-3); }
.help-steps li { padding-left: var(--s-5); position: relative; }
.help-steps li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 8px; height: 8px; border-radius: 50%; background: var(--teal-500);
}

/* ----------------------------- Layout ---------------------------------- */
.main-grid { padding-top: var(--s-7); padding-bottom: var(--s-9); display: grid; gap: var(--s-6); }

/* ----------------------------- Cards ----------------------------------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--s-6);
}
.step-card { padding: var(--s-7); }

.step-head { display: flex; gap: var(--s-4); align-items: flex-start; margin-bottom: var(--s-5); }
.step-number {
  flex: none; width: 40px; height: 40px; border-radius: 50%;
  background: var(--teal-600); color: #fff; font-weight: 700; font-size: 1.15rem;
  display: grid; place-items: center;
}
.step-title { font-size: 1.3rem; letter-spacing: -.01em; }
.step-help { color: var(--ink-500); margin-top: var(--s-1); max-width: 62ch; }
.step-body { display: grid; gap: var(--s-4); }
.step-actions { display: flex; gap: var(--s-3); flex-wrap: wrap; align-items: center; }

/* ----------------------------- Buttons --------------------------------- */
.btn {
  --btn-bg: var(--teal-600);
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  padding: var(--s-3) var(--s-5); min-height: 44px;
  border: 1px solid transparent; border-radius: var(--r-md);
  font-weight: 600; cursor: pointer; text-decoration: none;
  transition: background .15s ease, box-shadow .15s ease, opacity .15s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }
.btn-icon { display: inline-flex; }

.btn-primary { background: var(--btn-bg); color: #fff; }
.btn-primary:hover { background: var(--teal-700); }

.btn-secondary { background: var(--teal-050); color: var(--teal-700); border-color: var(--teal-100); }
.btn-secondary:hover { background: var(--teal-100); }

.btn-ghost { background: transparent; color: var(--ink-700); border-color: var(--line); }
.btn-ghost:hover { background: var(--bg); }

.btn-lg { min-height: 56px; padding: var(--s-4) var(--s-7); font-size: 1.1rem; }
.btn-sm { min-height: 36px; padding: var(--s-2) var(--s-4); font-size: .9rem; }

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: .5; cursor: not-allowed; pointer-events: none;
}

/* ----------------------------- Dropzone -------------------------------- */
.dropzone {
  display: grid; place-items: center; gap: var(--s-2); text-align: center;
  padding: var(--s-8) var(--s-5);
  border: 2px dashed var(--teal-100);
  border-radius: var(--r-md);
  background: var(--teal-050);
  color: var(--ink-700); cursor: pointer;
  transition: border-color .15s ease, background .15s ease;
}
.dropzone:hover { border-color: var(--teal-500); }
.dropzone.is-dragover {
  border-color: var(--teal-600); background: var(--teal-100);
  box-shadow: inset 0 0 0 2px rgba(16,122,139,.15);
}
.dropzone-sm { padding: var(--s-6) var(--s-5); }
.dropzone-icon { color: var(--teal-600); }
.dropzone-title { font-weight: 600; font-size: 1.05rem; }
.dropzone-sub { color: var(--ink-500); font-size: .95rem; }
.link-like { color: var(--teal-600); text-decoration: underline; font-weight: 600; }

/* ----------------------------- File list ------------------------------- */
.file-list { display: grid; gap: var(--s-2); }
.file-list:empty { display: none; }
.file-row {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-sm);
}
.file-row .file-thumb {
  width: 40px; height: 40px; border-radius: var(--r-sm); object-fit: cover;
  flex: none; background: var(--line);
}
.file-row .file-meta { min-width: 0; flex: 1; }
.file-row .file-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .file-size { color: var(--ink-500); font-size: .85rem; }
.file-remove {
  flex: none; width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--line); background: #fff; color: var(--ink-500);
  cursor: pointer; display: grid; place-items: center; font-size: 1.1rem; line-height: 1;
}
.file-remove:hover { color: var(--red-600); border-color: var(--red-600); background: var(--red-050); }

/* ----------------------------- Results / states ------------------------ */
.result-area { margin-top: var(--s-5); display: grid; gap: var(--s-3); }

.notice {
  display: flex; gap: var(--s-3); align-items: flex-start;
  padding: var(--s-4) var(--s-5); border-radius: var(--r-md);
  border: 1px solid var(--line); background: var(--bg);
}
.notice-icon { flex: none; margin-top: 2px; }
.notice-body { min-width: 0; }
.notice-title { font-weight: 700; }
.notice-text { color: var(--ink-700); }

.notice.is-success { background: var(--green-050); border-color: #c6e6d3; }
.notice.is-success .notice-icon { color: var(--green-600); }
.notice.is-warn { background: var(--amber-cell); border-color: #ecd9a0; }
.notice.is-warn .notice-icon { color: var(--amber-line); }
.notice.is-error { background: var(--red-050); border-color: #f3c2bd; }
.notice.is-error .notice-icon { color: var(--red-600); }

.detail-toggle {
  margin-top: var(--s-2); font-size: .85rem; color: var(--ink-500);
  background: none; border: none; padding: 0; cursor: pointer; text-decoration: underline;
}
.detail-pre {
  margin-top: var(--s-2); padding: var(--s-3); background: #fff;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .8rem; color: var(--ink-700); white-space: pre-wrap; word-break: break-word;
}

/* Ticket / stat chips */
.ticket-list { display: grid; gap: var(--s-2); }
.ticket-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
  padding: var(--s-3) var(--s-4); border: 1px solid var(--line);
  border-radius: var(--r-sm); background: #fff;
}
.ticket-id { font-weight: 600; }
.tag {
  font-size: .8rem; font-weight: 600; padding: 2px var(--s-3);
  border-radius: var(--r-pill); white-space: nowrap;
}
.tag-review { background: var(--green-050); color: var(--green-600); }
.tag-manual { background: var(--amber-cell); color: #8a6d00; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-3); }
.stat {
  text-align: center; padding: var(--s-4); border: 1px solid var(--line);
  border-radius: var(--r-md); background: #fff;
}
.stat-num { font-size: 1.8rem; font-weight: 700; color: var(--teal-700); line-height: 1; }
.stat-label { color: var(--ink-500); font-size: .85rem; margin-top: var(--s-1); }

/* ----------------------------- Working / progress ---------------------- */
.working {
  display: flex; align-items: center; gap: var(--s-4);
  padding: var(--s-4) var(--s-5); border: 1px solid var(--teal-100);
  background: var(--teal-050); border-radius: var(--r-md);
}
.working-title { font-weight: 600; }
.working-sub { color: var(--ink-500); font-size: .9rem; }
.spinner {
  width: 28px; height: 28px; flex: none; border-radius: 50%;
  border: 3px solid var(--teal-100); border-top-color: var(--teal-600);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2s; } }

/* ----------------------------- Legend ---------------------------------- */
.legend {
  border: 1px solid var(--line); border-radius: var(--r-md);
  padding: var(--s-5); background: var(--bg);
}
.legend-title { font-weight: 700; margin-bottom: var(--s-3); }
.legend-list { display: grid; gap: var(--s-3); }
.legend-item { display: flex; align-items: center; gap: var(--s-3); }
.swatch {
  width: 28px; height: 28px; flex: none; border-radius: var(--r-sm);
  border: 1px solid rgba(22,36,43,.18);
}
.swatch-white { background: #ffffff; }
.swatch-amber { background: var(--amber-cell); }
.swatch-red   { background: var(--red-cell); }
.legend-icon { display: inline-flex; color: var(--ink-500); flex: none; }
.legend-text { color: var(--ink-700); }
.legend-foot { margin-top: var(--s-4); color: var(--ink-500); font-size: .9rem; }

.muted-note { color: var(--ink-500); font-size: .95rem; }

/* ----------------------------- Secondary grid -------------------------- */
.secondary-grid {
  display: grid; gap: var(--s-6);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.secondary-wide { grid-column: 1 / -1; }
.secondary-head { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); }
.secondary-title { font-size: 1.15rem; margin-bottom: var(--s-2); }
.secondary-card .step-body { margin-top: var(--s-4); }

/* ----------------------------- Past batches ---------------------------- */
.batches { display: grid; gap: var(--s-2); margin-top: var(--s-4); }
.batch-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
  padding: var(--s-3) var(--s-4); border: 1px solid var(--line);
  border-radius: var(--r-sm); background: #fff;
}
.batch-meta { min-width: 0; }
.batch-date { font-weight: 600; }
.batch-sub { color: var(--ink-500); font-size: .85rem; }

.empty-state {
  text-align: center; padding: var(--s-6); color: var(--ink-500);
  border: 1px dashed var(--line); border-radius: var(--r-md); background: var(--bg);
}
.empty-state strong { color: var(--ink-700); display: block; margin-bottom: var(--s-1); }

/* ----------------------------- Metrics chart --------------------------- */
.metrics { margin-top: var(--s-4); }
.metric-bars {
  display: flex; align-items: flex-end; gap: var(--s-3);
  height: 180px; padding: var(--s-4) 0 0; border-bottom: 1px solid var(--line);
}
.metric-col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: var(--s-2); min-width: 0; }
.metric-bar-wrap { width: 100%; max-width: 56px; display: flex; align-items: flex-end; height: 140px; }
.metric-bar {
  width: 100%; background: linear-gradient(180deg, var(--teal-500), var(--teal-600));
  border-radius: var(--r-sm) var(--r-sm) 0 0; min-height: 4px;
  transition: height .4s ease;
}
.metric-val { font-weight: 700; color: var(--teal-700); font-size: .9rem; }
.metric-week { color: var(--ink-500); font-size: .8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

/* ----------------------------- Toasts ---------------------------------- */
.toast-region {
  position: fixed; right: var(--s-5); bottom: var(--s-5); z-index: 200;
  display: grid; gap: var(--s-3); width: min(360px, calc(100vw - 32px));
}
.toast {
  display: flex; gap: var(--s-3); align-items: flex-start;
  padding: var(--s-4); border-radius: var(--r-md); background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow-md);
  animation: toast-in .2s ease;
}
.toast.is-success { border-left: 4px solid var(--green-600); }
.toast.is-error { border-left: 4px solid var(--red-600); }
.toast.is-info { border-left: 4px solid var(--teal-600); }
.toast-icon { flex: none; margin-top: 1px; }
.toast.is-success .toast-icon { color: var(--green-600); }
.toast.is-error .toast-icon { color: var(--red-600); }
.toast.is-info .toast-icon { color: var(--teal-600); }
.toast-body { flex: 1; min-width: 0; }
.toast-title { font-weight: 700; }
.toast-text { color: var(--ink-700); font-size: .92rem; }
.toast-close {
  flex: none; border: none; background: none; cursor: pointer;
  color: var(--ink-300); font-size: 1.2rem; line-height: 1; padding: 0 var(--s-1);
}
.toast-close:hover { color: var(--ink-700); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ----------------------------- Footer ---------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: var(--card); padding: var(--s-6) 0; }
.site-footer p { color: var(--ink-500); font-size: .9rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); flex-wrap: wrap; }
.footer-version { font-size: .82rem; color: var(--ink-300); font-variant-numeric: tabular-nums; }

/* ----------------------- Header right cluster -------------------------- */
.header-right { display: flex; align-items: center; gap: var(--s-5); }

/* What's New button */
.whats-new-btn {
  border: 1px solid var(--teal-100);
  background: var(--teal-050);
  color: var(--teal-700);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .01em;
  padding: var(--s-1) var(--s-3);
  border-radius: var(--r-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s ease, border-color .15s ease;
}
.whats-new-btn:hover { background: var(--teal-100); border-color: var(--teal-500); }
.whats-new-btn:focus-visible { box-shadow: var(--focus); outline: none; }

/* ----------------------- Changelog modal ------------------------------- */
.changelog-modal {
  border: none;
  border-radius: var(--r-lg);
  box-shadow: 0 8px 40px rgba(22,36,43,.18);
  padding: 0;
  width: min(560px, calc(100vw - 2rem));
  max-height: min(80vh, 600px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.changelog-modal::backdrop { background: rgba(22,36,43,.45); }
.changelog-inner { display: flex; flex-direction: column; height: 100%; }
.changelog-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s-5) var(--s-6);
  border-bottom: 1px solid var(--line);
  flex: none;
}
.changelog-title { font-size: 1.15rem; font-weight: 700; }
.changelog-close {
  border: none; background: none; cursor: pointer;
  color: var(--ink-300); display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: var(--r-sm); transition: color .15s, background .15s;
}
.changelog-close:hover { color: var(--ink-700); background: var(--bg); }
.changelog-close:focus-visible { box-shadow: var(--focus); outline: none; }
.changelog-body { overflow-y: auto; padding: var(--s-5) var(--s-6); display: flex; flex-direction: column; gap: var(--s-6); }

/* Changelog entries */
.cl-entry { display: flex; flex-direction: column; gap: var(--s-3); }
.cl-header { display: flex; align-items: baseline; gap: var(--s-3); }
.cl-version {
  font-size: 1rem; font-weight: 700; color: var(--teal-700);
  background: var(--teal-050); border: 1px solid var(--teal-100);
  padding: 2px var(--s-2); border-radius: var(--r-pill);
  font-variant-numeric: tabular-nums;
}
.cl-date { font-size: .85rem; color: var(--ink-500); }
.cl-notes { display: flex; flex-direction: column; gap: var(--s-2); padding-left: var(--s-4); list-style: disc; }
.cl-notes li { font-size: .95rem; color: var(--ink-700); }

/* ----------------------------- Responsive ------------------------------ */
@media (max-width: 860px) {
  .secondary-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .header-inner { flex-wrap: wrap; }
  .step-card { padding: var(--s-6); }
}
@media (max-width: 560px) {
  .container { padding: 0 var(--s-4); }
  .brand-tagline { display: none; }
  .toast-region { right: var(--s-3); left: var(--s-3); width: auto; }
  .whats-new-btn { font-size: .78rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}