:root {
  --ink: #16202E;
  --paper: #F5F6F3;
  --surface: #FFFFFF;
  --line: #DEE3DF;
  --accent: #2C6E63;
  --accent-dark: #1F5148;
  --amber: #C97A1F;
  --amber-bg: #FCF1DF;
  --red: #B23A30;
  --red-bg: #FBE7E4;
  --green: #3FAE6A;
  --grey: #7C8492;
  --grey-bg: #EBEDF0;
  --text: #1C2530;
  --text-muted: #626C7A;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(22,32,46,0.06), 0 4px 14px rgba(22,32,46,0.06);
  --group1: #2C6E63;
  --group2: #35597A;
  --group3: #6B4C7A;
  --group4: #7A5A2E;
  --group5: #5C6B2E;
  --navy: #1B3A6B;
  --navy-dark: #142C52;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--text);
  min-height: 100%;
}

body {
  padding-bottom: 2rem;
}

h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; margin: 0 0 0.6rem; color: var(--ink); }
h1 { font-size: 1.4rem; }
h2 { font-size: 1.05rem; }
h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
p { margin: 0.3rem 0; }
.hint { color: var(--text-muted); font-size: 0.85rem; }
.muted { color: var(--text-muted); font-size: 0.8rem; }

/* ---------- Header / Nav ---------- */
.app-header {
  background: #FFFFFF;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  gap: 1rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; letter-spacing: -0.01em; color: #000000; }
.brand img { height: 28px; width: 28px; object-fit: contain; border-radius: 4px; background: #fff; border: 1px solid var(--line); }
.site-name {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  white-space: nowrap;
  pointer-events: none;
}
.app-nav { display: flex; align-items: center; gap: 0.25rem; flex-wrap: wrap; }
.nav-link {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  color: #fff;
  background: var(--navy);
  text-decoration: none;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.2;
  padding: 0.5rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.nav-btn { appearance: none; -webkit-appearance: none; background: var(--navy); margin: 0; cursor: pointer; }
.nav-link:hover { background: var(--navy-dark); color: #fff; }
.nav-link.active { background: var(--accent); color: #fff; }
body.locked .app-nav { display: none; }
body.locked .site-name { display: none; }

@media (max-width: 720px) {
  .site-name { display: none; }
}

/* ---------- Layout ---------- */
.app-outlet { max-width: 1100px; margin: 0 auto; padding: 1rem; }
.page { display: flex; flex-direction: column; gap: 1rem; }
.page-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.main-layout { display: grid; grid-template-columns: max-content minmax(0, 1fr); align-items: start; gap: 1rem; }
.main-content { display: flex; flex-direction: column; gap: 1rem; min-width: 0; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}
.card-border-green { border: 2px solid var(--accent); }
.card-border-red { border: 2px solid var(--red); }
.card-border-grey { border: 2px solid var(--grey); }
.card-border-green h2 { color: var(--accent); }
.card-border-red h2 { color: var(--red); }
.card-border-grey h2 { color: var(--grey); }
.card-head-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.5rem; gap: 0.5rem; flex-wrap: wrap; }
.head-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }

/* ---------- Forms ---------- */
.field-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.6rem; }
.field { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; font-weight: 600; color: var(--text-muted); flex: 1 1 180px; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }
.field-wide { grid-column: 1 / -1; }
.field-narrow { flex: 0 1 240px; max-width: 320px; }
.field-toggle { flex-direction: row; align-items: center; gap: 0.5rem; }
input[type="text"], input[type="password"], input[type="number"], input[type="file"], input[type="date"], select, textarea {
  font: inherit;
  padding: 0.55rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
}
textarea { min-height: 4.5rem; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
/* Required fields get a light yellow background until they have a value.
   :invalid covers native inputs/selects/textareas with [required]; .input-empty
   is a manual equivalent for custom controls (like the Person picker button)
   that aren't native form fields. */
input[required]:invalid,
select[required]:invalid,
textarea[required]:invalid,
.input-empty,
.btn.input-empty {
  background: #FFF9D6;
}
input[required]:invalid:focus,
select[required]:invalid:focus,
textarea[required]:invalid:focus {
  background: #FFF9D6;
}
.radio { font-weight: 500; color: var(--text); display: inline-flex; align-items: center; gap: 0.3rem; margin-right: 0.8rem; }
fieldset.field { border: none; padding: 0; margin: 0; }
fieldset legend { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); padding: 0; }
.logo-preview { max-height: 64px; margin-top: 0.5rem; border-radius: var(--radius-sm); }
.danger-zone { margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px dashed var(--line); }
.danger-zone h3 { color: var(--red); }
.storage-bar-track { height: 8px; border-radius: 999px; background: var(--paper); overflow: hidden; margin-bottom: 0.4rem; }
.storage-bar-fill { height: 100%; border-radius: 999px; background: var(--accent); }
.storage-bar-fill.storage-medium { background: var(--amber); }
.storage-bar-fill.storage-high { background: var(--red); }
.storage-warning { background: var(--red-bg); color: var(--red); border-radius: var(--radius-sm); padding: 0.5rem 0.6rem; font-size: 0.85rem; font-weight: 600; margin-top: 0.4rem; }

/* ---------- Buttons ---------- */
.btn {
  font: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.btn:hover { background: var(--paper); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--paper); }
.btn-clear { background: transparent; border-color: var(--red); color: var(--red); }
.btn-clear:hover { background: var(--red-bg); }
.btn-sm { padding: 0.35rem 0.6rem; font-size: 0.78rem; }
.btn-picker { text-align: left; width: 100%; }
.icon-btn { background: none; border: none; font-size: 1.3rem; line-height: 1; cursor: pointer; color: var(--text-muted); padding: 0.2rem 0.4rem; }
.icon-btn:hover { color: var(--text); }

/* ---------- Quick select row (tag-board styling) ---------- */
.quick-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.1rem;
}
.quick-btn {
  position: relative;
  width: 100%;
  font: inherit;
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.55rem 0.9rem 0.5rem;
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 6px 6px 4px 4px;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.quick-btn.group-1 { background: var(--group1); }
.quick-btn.group-2 { background: var(--group2); }
.quick-btn.group-3 { background: var(--group3); }
.quick-btn.group-4 { background: var(--group4); }
.quick-btn.group-5 { background: var(--group5); }
.quick-dot { width: 8px; height: 8px; border-radius: 50%; flex: 0 0 auto; background: rgba(255,255,255,0.35); }
.quick-dot.dot-in { background: var(--green); }
.quick-dot.dot-out { background: var(--red); }
.quick-btn:hover { filter: brightness(1.08); }
.quick-btn:disabled:not([class*="group-"]) { background: var(--grey-bg); color: var(--text-muted); cursor: default; }
.quick-btn:disabled:not([class*="group-"]) .quick-dot { background: rgba(0,0,0,0.15); }
.quick-btn.selected { box-shadow: 0 0 0 2px #fff inset, 0 0 0 4px var(--accent-dark); }
.quick-btn.is-out { opacity: 0.55; cursor: not-allowed; }
.quick-btn.is-out:hover { filter: none; }

.quick-slot-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.6rem; }
.quick-slot { border: 1px solid var(--line); border-left: 4px solid var(--line); border-radius: var(--radius-sm); padding: 0.5rem; display: flex; flex-direction: column; gap: 0.35rem; }
.quick-slot.group-1 { border-left-color: var(--group1); }
.quick-slot.group-2 { border-left-color: var(--group2); }
.quick-slot.group-3 { border-left-color: var(--group3); }
.quick-slot.group-4 { border-left-color: var(--group4); }
.quick-slot.group-5 { border-left-color: var(--group5); }
.quick-slot-num { font-weight: 700; color: var(--accent); font-size: 0.75rem; }
.quick-slot-name { font-weight: 600; font-size: 0.85rem; }
.quick-slot-label-field { display: flex; flex-direction: column; gap: 0.15rem; font-size: 0.72rem; color: var(--text-muted); }
.quick-slot-label-field input { padding: 0.35rem 0.5rem; font-size: 0.82rem; }
.quick-slot-actions { display: flex; gap: 0.4rem; }

/* ---------- Sign-out cart ---------- */
.asset-typeahead { position: relative; }
.typeahead-results {
  position: absolute; top: 100%; left: 0; right: 0; margin-top: 0.25rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
  max-height: 260px; overflow-y: auto; z-index: 30; box-shadow: var(--shadow);
}
.typeahead-item {
  width: 100%; text-align: left; font: inherit; padding: 0.5rem 0.6rem; border: none;
  background: var(--surface); cursor: pointer; display: block; gap: 0.5rem;
  border-bottom: 1px solid var(--line);
}
.typeahead-item:last-child { border-bottom: none; }
.typeahead-item:hover { background: var(--paper); }
.typeahead-item.is-out { cursor: not-allowed; color: var(--text-muted); background: var(--grey-bg); }
.typeahead-empty { padding: 0.6rem; color: var(--text-muted); font-size: 0.85rem; }

.cart-items { display: flex; flex-direction: column; gap: 0.4rem; margin: 0.6rem 0; }
.cart-item { display: flex; align-items: center; gap: 0.6rem; background: var(--paper); border-radius: var(--radius-sm); padding: 0.5rem 0.6rem; flex-wrap: wrap; }
.cart-item-name { font-weight: 700; flex: 1 1 140px; }
.olt-toggle { font-size: 0.78rem; display: flex; align-items: center; gap: 0.3rem; color: var(--text-muted); }
.cart-note { flex: 1 1 160px; }
.sign-actions { display: flex; gap: 0.6rem; justify-content: space-between; margin-top: 0.6rem; }

/* ---------- Currently out list ---------- */
.out-list { display: flex; flex-direction: column; gap: 0.5rem; }
.list-search { width: 100%; margin-bottom: 0.6rem; }
.out-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  border-left: 5px solid var(--line);
  background: var(--surface);
}
.out-row.out-overdue1 { border-left-color: var(--amber); background: var(--amber-bg); }
.out-row.out-overdue2 { border-left-color: var(--red); background: var(--red-bg); }
.out-row.out-olt { border-left-color: var(--grey); background: var(--grey-bg); }
.out-main { display: flex; flex-direction: column; gap: 0.15rem; min-width: 160px; flex: 1 1 260px; }
.out-line1 { font-size: 0.92rem; color: var(--text); }
.out-line1 strong { font-weight: 700; }
.out-line2 { font-size: 0.82rem; color: var(--text-muted); }
.out-note { font-size: 0.8rem; font-style: italic; color: var(--text); }
.out-side { display: flex; align-items: center; gap: 0.6rem; flex: 0 0 auto; }
.out-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 0.1rem; font-size: 0.76rem; color: var(--text-muted); line-height: 1.3; }
.out-meta-line1 { white-space: nowrap; font-variant-numeric: tabular-nums; }
.out-meta-line2 { white-space: nowrap; }
.out-actions { display: flex; gap: 0.4rem; }
.badge { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; padding: 0.15rem 0.4rem; border-radius: 4px; }
.badge-o1 { background: var(--amber); color: #fff; }
.badge-o2 { background: var(--red); color: #fff; }
.badge-olt { background: var(--grey); color: #fff; }
.badge-status-in { background: var(--green); color: #fff; }

/* ---------- Lists (tabs, simple lists, tables) ---------- */
.tabs { display: flex; gap: 0.3rem; margin-bottom: 0.6rem; }
.tab { font: inherit; font-weight: 600; font-size: 0.82rem; padding: 0.4rem 0.75rem; border: 1px solid var(--line); background: var(--surface); border-radius: 999px; cursor: pointer; color: var(--text-muted); }
.tab.active { background: var(--ink); color: #fff; border-color: var(--ink); }

.simple-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.simple-list li { display: flex; align-items: center; justify-content: space-between; padding: 0.4rem 0.5rem; border-radius: var(--radius-sm); background: var(--paper); }
.add-row { display: flex; gap: 0.5rem; margin-top: 0.6rem; }
.add-row input { flex: 1; }
.add-row input.bulk-from, .add-row input.bulk-to { flex: 0 0 80px; }
.row-actions { display: flex; gap: 0.3rem; }
.inline-edit { font: inherit; padding: 0.2rem 0.4rem; }

.locations-editor { display: flex; flex-direction: column; gap: 0.7rem; margin-bottom: 0.6rem; }
.location-block { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.6rem; }
.location-block-head { display: flex; align-items: center; justify-content: space-between; font-weight: 700; margin-bottom: 0.5rem; }
.position-list { list-style: none; margin: 0 0 0.5rem; padding: 0 0 0 0.6rem; display: flex; flex-direction: column; gap: 0.25rem; border-left: 2px solid var(--line); }
.position-list li { display: flex; align-items: center; gap: 0.5rem; padding: 0.3rem 0.5rem; background: var(--paper); border-radius: var(--radius-sm); }
.position-list li .editable-name { font-weight: 600; flex: 0 0 auto; }
.position-list li .muted, .position-list li .hint { flex: 1; }
.position-list li .row-actions { flex: 0 0 auto; }

.asset-list, .request-list { list-style: none; margin: 0 0 0.8rem; padding: 0; display: flex; flex-direction: column; gap: 0.35rem; }
.asset-list li { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.5rem 0.6rem; background: var(--paper); border-radius: var(--radius-sm); flex-wrap: wrap; }
.asset-row-main { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.asset-name { font-weight: 700; }
.location-group { margin-bottom: 0.9rem; }
.checkbox-row { display: flex; align-items: flex-start; gap: 0.5rem; padding: 0.4rem 0; cursor: pointer; }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.data-table th, .data-table td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--line); }
.data-table th { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* ---------- Modal / Toast ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(16,22,32,0.5);
  display: flex; align-items: flex-end; justify-content: center;
  z-index: 100; padding: 0;
}
.modal {
  background: var(--surface);
  width: 100%; max-width: 520px;
  max-height: 90vh; overflow-y: auto;
  border-radius: 14px 14px 0 0;
  box-shadow: var(--shadow);
  padding: 1rem;
}
.modal.modal-lg { max-width: 680px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.6rem; }
.modal-header h2 { margin: 0; }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 0.9rem; }
.pick-list { max-height: 45vh; overflow-y: auto; display: flex; flex-direction: column; gap: 0.25rem; margin-top: 0.5rem; }
.pick-item {
  text-align: left; font: inherit; padding: 0.5rem 0.6rem;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface); cursor: pointer; display: flex; justify-content: space-between; gap: 0.5rem;
}
.pick-item:hover { background: var(--paper); }
details summary { cursor: pointer; font-weight: 700; margin: 0.6rem 0; color: var(--accent); }

@media (min-width: 640px) {
  .modal-overlay { align-items: center; }
  .modal { border-radius: 14px; }
}

.toast-root { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 0.4rem; z-index: 200; }
.toast {
  background: var(--ink); color: #fff; padding: 0.6rem 1rem; border-radius: 999px;
  font-size: 0.85rem; font-weight: 600; opacity: 0; transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease; box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-success { background: var(--accent-dark); }
.toast-error { background: var(--red); }

/* ---------- Lock / gate screens ---------- */
.lock-screen, .gate { display: flex; align-items: center; justify-content: center; min-height: 60vh; }
.lock-card, .gate-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.5rem; width: 100%; max-width: 300px;
  display: flex; flex-direction: column; gap: 0.6rem; text-align: center;
}
.lock-label { font-weight: 700; color: var(--text-muted); font-size: 0.85rem; }
.lock-error { color: var(--red); font-size: 0.8rem; }
.app-version { text-align: center; color: var(--text-muted); font-size: 0.75rem; margin: 0.5rem 0 0; }
.app-support { text-align: center; font-size: 0.75rem; margin: 0.2rem 0 0; }
.app-support a { color: var(--accent); text-decoration: none; font-weight: 600; }
.app-support a:hover { text-decoration: underline; }

@media (max-width: 480px) {
  .app-header { padding: 0.6rem 0.75rem; }
  h1 { font-size: 1.2rem; }
}

@media (max-width: 720px) {
  .main-layout { grid-template-columns: 1fr; }
  .quick-row {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 0.3rem 0.1rem 0.6rem;
  }
  .quick-btn { width: auto; flex: 0 0 auto; }
}