:root {
  --bg: #f3f4f7;
  --panel: #ffffff;
  --panel-soft: #fafbfc;
  --border: #e3e6eb;
  --border-strong: #d3d7de;
  --text: #1a1f2b;
  --muted: #6b7280;
  --muted-soft: #9aa1ac;
  --accent: #3b6ef5;
  --accent-dark: #2952c8;
  --accent-soft: #eaf0ff;
  --good: #17a166;
  --good-soft: #e7f8ef;
  --warn: #d68a1a;
  --warn-soft: #fdf1de;
  --danger: #d1453b;
  --danger-soft: #fdecea;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 4px 14px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.14);
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

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

::selection { background: var(--accent-soft); color: var(--accent-dark); }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d6d9df; border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #c2c6cf; }

/* ---------------------------------------------------------------- login */

#loginScreen {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 15% 15%, rgba(59, 110, 245, 0.10), transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(23, 161, 102, 0.08), transparent 45%),
    var(--bg);
}
#loginScreen[hidden] { display: none; }
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px 34px;
  width: 360px;
}
.login-card h1 { margin: 0; font-size: 19px; letter-spacing: -0.01em; }
.login-card .sub { margin: 4px 0 22px; color: var(--muted); font-size: 12.5px; }

.login-tabs {
  display: flex; gap: 4px; margin-bottom: 20px;
  background: var(--panel-soft); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 3px;
}
.tab-btn {
  flex: 1; padding: 7px 0; border: none; background: transparent;
  border-radius: 7px; cursor: pointer; font-size: 13px; color: var(--muted);
  font-weight: 500; transition: background .15s, color .15s;
}
.tab-btn.active { background: var(--panel); color: var(--accent); box-shadow: var(--shadow-sm); }
.tab-btn:hover:not(.active) { color: var(--text); }

.login-form { display: flex; flex-direction: column; gap: 6px; }
.login-form[hidden] { display: none; }
.login-form label { font-size: 12px; color: var(--muted); margin-top: 8px; font-weight: 500; }
.login-form input {
  padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  font-size: 14px; transition: border-color .15s, box-shadow .15s;
}
.login-form input:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.login-form button { margin-top: 16px; width: 100%; padding: 10px 0; font-size: 13.5px; }
.login-error {
  color: var(--danger); font-size: 12.5px; margin-top: 14px; min-height: 14px;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}

/* ---------------------------------------------------------------- header */

header {
  padding: 12px 22px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-shrink: 0;
  position: relative;
  z-index: 5;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12.5px; letter-spacing: .02em;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
h1 { font-size: 15.5px; margin: 0; font-weight: 650; letter-spacing: -0.01em; }
.sub { font-weight: 400; color: var(--muted); font-size: 12px; margin-top: 1px; }

.locale-select {
  padding: 7px 30px 7px 12px; border: 1px solid var(--border-strong); border-radius: var(--radius);
  font-size: 13px; font-weight: 600; color: var(--accent-dark); background: var(--accent-soft);
  cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%232952c8'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}

.progress { display: flex; align-items: center; gap: 10px; min-width: 210px; }
.progress-bar { width: 130px; height: 7px; background: var(--border); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--good), #22c07d); width: 0%; transition: width .25s ease; }
#progressText { font-size: 12px; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }

.language-flag {
  display: flex; align-items: center; gap: 9px; cursor: pointer;
  padding: 7px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel-soft); transition: border-color .15s, background .15s;
  user-select: none;
}
.language-flag:hover { border-color: var(--border-strong); }
.language-flag input { width: 15px; height: 15px; accent-color: var(--good); cursor: pointer; }
.language-flag-text { display: flex; flex-direction: column; line-height: 1.25; }
.language-flag-text strong { font-size: 12px; font-weight: 600; }
.language-flag-text em { font-style: normal; font-size: 10.5px; color: var(--muted-soft); }
.language-flag.is-done {
  background: var(--good-soft); border-color: #bfe8d3;
}
.language-flag.is-done .language-flag-text strong { color: var(--good); }

.session-info { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--muted); }
.role-badge {
  font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  padding: 3px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-dark);
}
.role-badge.approver { background: var(--good-soft); color: var(--good); }

/* ---------------------------------------------------------------- layout */

.layout { flex: 1; display: flex; min-height: 0; }

#sidebar {
  width: 380px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.sidebar-controls {
  padding: 12px; border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 9px;
}
.sidebar-controls input[type=text] {
  padding: 8px 10px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  font-size: 13px; transition: border-color .15s, box-shadow .15s;
}
.sidebar-controls input[type=text]:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.checkbox { display: flex; align-items: center; gap: 7px; font-size: 12.5px; color: var(--muted); cursor: pointer; }
.checkbox input { accent-color: var(--accent); }

#list { list-style: none; margin: 0; padding: 6px; overflow-y: auto; flex: 1; }
#list li {
  padding: 9px 10px;
  margin-bottom: 2px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 9px;
  transition: background .12s;
}
#list li:hover { background: var(--panel-soft); }
#list li.active { background: var(--accent-soft); }
#list li.active .name { color: var(--accent-dark); font-weight: 600; }
.dot {
  display: inline-block;
  width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; background: #d0d5dd;
  box-shadow: 0 0 0 3px transparent;
}
.dot.touched { background: var(--warn); }
.dot.reviewed { background: var(--good); }
#list li.touched .dot { background: var(--warn); }
#list li.reviewed .dot { background: var(--good); }
#list li .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#list li .id { color: var(--muted-soft); font-size: 10.5px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.status-legend {
  display: flex; gap: 12px; font-size: 11px; color: var(--muted-soft); flex-wrap: wrap;
}
.status-legend span { display: inline-flex; align-items: center; gap: 5px; }

/* ---------------------------------------------------------------- editor */

#editor { flex: 1; overflow-y: auto; padding: 26px 32px 40px; min-height: 0; }
#emptyState {
  color: var(--muted-soft); font-size: 14px; margin-top: 15vh; text-align: center;
}

.editor-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.ui-text { font-size: 21px; font-weight: 650; letter-spacing: -0.01em; }
.command-id {
  color: var(--muted); font-size: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  margin-top: 2px;
}
.generated-info { color: var(--muted-soft); font-size: 11px; margin-top: 6px; }
.generated-info .generated-added { color: var(--warn); font-weight: 600; margin-top: 3px; }
.reviewed-toggle {
  font-size: 13px; font-weight: 500; padding: 7px 12px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--panel-soft);
}

details.reference {
  margin: 0 0 20px; background: var(--panel-soft); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 14px;
}
details.reference summary {
  cursor: pointer; font-size: 12px; color: var(--muted); font-weight: 500;
}
.ref-grid { display: flex; gap: 36px; margin-top: 10px; }
.ref-grid > div { flex: 1; min-width: 0; }
.ref-grid h4 {
  margin: 0 0 5px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted-soft);
}
.ref-grid ul {
  margin: 0; padding-left: 16px; font-size: 12.5px; max-height: 160px; overflow-y: auto; color: var(--text);
  column-width: 210px; column-gap: 24px;
}
.ref-grid li { margin-bottom: 2px; break-inside: avoid; }

h3 { font-size: 12.5px; margin: 22px 0 10px; display: flex; align-items: baseline; gap: 8px; font-weight: 650; letter-spacing: -0.01em; }
.hint { font-weight: 400; color: var(--muted-soft); font-size: 11px; }

.review-instructions {
  margin: 0 0 14px; padding: 10px 14px; font-size: 12.5px; line-height: 1.55; color: var(--text);
  background: var(--accent-soft); border: 1px solid #c9dafc; border-radius: var(--radius);
}
.review-instructions strong { color: var(--accent-dark); }

#rows { display: flex; flex-direction: column; gap: 12px; }
.row {
  display: flex; align-items: stretch; gap: 12px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 12px 12px 6px; box-shadow: var(--shadow-sm);
  transition: border-color .15s;
}
.row:focus-within { border-color: var(--accent); }
.row .slot-label {
  font-size: 10.5px; font-weight: 650; color: var(--muted-soft); width: 44px; flex-shrink: 0;
  padding-top: 8px; text-align: center; text-transform: uppercase; letter-spacing: .03em;
}
.row-body { flex: 1; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.row-section-label {
  font-size: 11px; font-weight: 600; color: var(--muted); margin-bottom: 5px;
}
.row-section-label .hint { font-weight: 400; }
.row textarea {
  width: 100%; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 9px 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13.5px; line-height: 1.5;
  resize: vertical; min-height: 96px;
  transition: border-color .15s, box-shadow .15s;
}
.row textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.row textarea[readonly] {
  background: var(--panel-soft); color: var(--muted); cursor: default; resize: none;
}
.row textarea[readonly]:focus {
  border-color: var(--border); box-shadow: none;
}
.row-section.additions {
  background: var(--good-soft); border: 1px dashed #a8dcbf; border-radius: var(--radius);
  padding: 9px 10px;
}
.row-section.additions .row-section-label { color: var(--good); }
.row-section.additions textarea {
  min-height: 66px; background: var(--panel); border-color: #bfe8d3;
}
.row-section.additions textarea:focus { border-color: var(--good); box-shadow: 0 0 0 3px var(--good-soft); }

button.secondary {
  border: 1px solid var(--border-strong); background: var(--panel); color: var(--text);
  padding: 7px 14px; border-radius: var(--radius-sm); font-size: 13px; cursor: pointer;
  font-weight: 500; transition: background .12s, border-color .12s;
}
button.secondary:hover { background: var(--panel-soft); border-color: var(--muted-soft); }
button.primary {
  border: none; background: var(--accent); color: #fff;
  padding: 8px 16px; border-radius: var(--radius-sm); font-size: 13px; cursor: pointer;
  font-weight: 550; box-shadow: var(--shadow-sm); transition: background .12s, transform .05s;
}
button.primary:hover { background: var(--accent-dark); }
button.primary:active { transform: translateY(1px); }
button:disabled { opacity: .5; cursor: not-allowed; }

.preview {
  background: var(--panel-soft); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px 14px; max-height: 220px; overflow-y: auto; font-size: 13px; line-height: 1.7;
}
.preview .phrase { padding: 1px 0; color: var(--text); }
.preview .empty { color: var(--muted-soft); font-style: italic; }

textarea#f-note {
  width: 100%; border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 9px 11px;
  font-size: 13px; font-family: inherit; resize: vertical; transition: border-color .15s, box-shadow .15s;
}
textarea#f-note:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}

.actions {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 10px;
  margin: 22px -32px 0; padding: 14px 32px calc(14px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border); background: var(--panel);
  position: sticky; bottom: 0; z-index: 10;
  box-shadow: 0 -6px 16px rgba(16, 24, 40, 0.08);
}
.actions-left {
  min-width: 0; display: flex; align-items: center;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.actions-center { display: flex; align-items: center; gap: 10px; justify-self: center; }
.actions-right {
  min-width: 0; display: flex; align-items: center; justify-content: flex-end;
  gap: 10px; flex-wrap: wrap;
}
#saveStatus { font-size: 12px; color: var(--good); font-weight: 500; }
#saveStatus.error { color: var(--danger); }

/* ---------------------------------------------------------------- modal */

.modal-overlay {
  position: fixed; inset: 0; background: rgba(16, 24, 40, 0.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal-overlay[hidden] { display: none; }
.modal-box {
  background: var(--panel); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 24px 26px; width: 360px; max-width: calc(100vw - 32px);
}
.modal-box p { margin: 0 0 20px; font-size: 14px; line-height: 1.5; color: var(--text); }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.modal-box.alert-only #modalCancelBtn { display: none; }