/* ════════════════════════════════════════════════════════════════════
   Mecka Dispatch — mobile-first styles
   Tap targets ≥44px. No external fonts.
   ════════════════════════════════════════════════════════════════════ */

:root {
  --bg: #f7f6f3;
  --surface: #ffffff;
  --ink: #1a1917;
  --ink-mute: #5b5854;
  --line: #e3e0db;
  --line-soft: #f0ede8;
  --primary: #1a1917;
  --primary-fg: #ffffff;
  --accent: #2563eb;
  --error-bg: #fee2e2;
  --error-fg: #991b1b;
  --warn-bg: #fef3c7;
  --warn-fg: #854d0e;
  --ok: #16a34a;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --radius: 10px;
  --tap: 44px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

input, button, select, textarea {
  font-family: inherit;
  font-size: 16px; /* prevent iOS zoom */
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

h1 { font-size: 24px; font-weight: 700; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 18px; font-weight: 600; margin: 24px 0 12px; }

.app-root {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 64px;
  min-height: 100vh;
}

@media (min-width: 768px) {
  .app-root { padding: 32px; }
}

/* ── Screen container ─────────────────────────────────────────── */
.screen { animation: fade-in .12s ease-out; }
@keyframes fade-in {
  from { opacity: 0; transform: translateY(2px); }
  to { opacity: 1; transform: none; }
}

.loading {
  text-align: center;
  color: var(--ink-mute);
  padding: 32px 0;
}

.empty {
  text-align: center;
  color: var(--ink-mute);
  padding: 48px 16px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px dashed var(--line);
}

/* ── Home screen ──────────────────────────────────────────────── */
.brand {
  margin-bottom: 24px;
}
.brand h1 { font-size: 22px; }
.subtitle { color: var(--ink-mute); margin: 0; font-size: 14px; }

.card-grid {
  display: grid;
  gap: 16px;
}
@media (min-width: 600px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}

.big-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  text-align: left;
  box-shadow: var(--shadow);
  transition: transform .08s ease, border-color .08s ease, box-shadow .08s ease;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}
.big-card:hover { border-color: var(--ink); }
.big-card:active { transform: scale(.99); }
.big-card-icon { font-size: 32px; line-height: 1; }
.big-card-title { font-size: 18px; font-weight: 600; }
.big-card-desc { color: var(--ink-mute); font-size: 14px; }

/* ── Forms ────────────────────────────────────────────────────── */
.link-back {
  color: var(--ink-mute);
  font-size: 14px;
  padding: 8px 0;
  margin-bottom: 8px;
  min-height: var(--tap);
  display: inline-flex;
  align-items: center;
}
.link-back:hover { color: var(--ink); }

.step-label {
  color: var(--ink-mute);
  font-size: 13px;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.hub-chip {
  display: inline-block;
  padding: 6px 12px;
  background: var(--line-soft);
  color: var(--ink-mute);
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 20px;
}
.hub-chip strong { color: var(--ink); font-weight: 600; }

/* Sets row at top of device-return step 2 */
.sets-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 4px;
}
.sets-help {
  margin: 0 0 16px;
  color: var(--ink-mute);
  font-size: 13px;
}

/* Per-device replacement reminder */
.reminder {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #7c2d12;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.4;
  margin-bottom: 4px;
}

form { display: flex; flex-direction: column; gap: 16px; }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: none;
  margin: 0;
  padding: 0;
}
.field-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.field-help {
  font-size: 13px;
  color: var(--ink-mute);
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  min-height: var(--tap);
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
  transition: border-color .08s ease, box-shadow .08s ease;
}
textarea { min-height: 80px; resize: vertical; line-height: 1.4; padding: 10px 12px; }

input:focus, select:focus, textarea:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(26,25,23,.08);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235b5854' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.radio-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  min-height: var(--tap);
}
.radio-row input { width: 20px; height: 20px; margin: 0; accent-color: var(--ink); }
.radio-row:has(input:checked) { border-color: var(--ink); background: var(--line-soft); }

.toggle-row {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 8px 0;
  min-height: var(--tap);
}
.toggle-row input { width: 22px; height: 22px; margin: 0; accent-color: var(--ink); }
.toggle-label { font-weight: 600; }

/* ── Device cards (Step 2 of return) ──────────────────────────── */
.device-grid {
  display: grid;
  gap: 16px;
}
@media (min-width: 700px) {
  .device-grid { grid-template-columns: 1fr 1fr; }
}

.device-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin: 0;
}
.device-fields {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn-primary, .btn-secondary {
  min-height: var(--tap);
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: opacity .08s ease, transform .08s ease;
}
.btn-primary {
  background: var(--primary);
  color: var(--primary-fg);
}
.btn-primary:hover { opacity: .9; }
.btn-primary:active { transform: scale(.99); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.btn-secondary {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-secondary:hover { border-color: var(--ink); }

.btn-tiny {
  min-height: 32px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 13px;
  background: var(--ink);
  color: var(--primary-fg);
  font-weight: 500;
}
.btn-tiny:hover { opacity: .9; }
.btn-tiny:disabled { opacity: .5; cursor: not-allowed; }

/* ── Form messages ────────────────────────────────────────────── */
.form-error {
  background: var(--error-bg);
  color: var(--error-fg);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}
.form-warn {
  background: var(--warn-bg);
  color: var(--warn-fg);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
}

/* ── Confirmation ─────────────────────────────────────────────── */
.confirmation {
  text-align: center;
  padding: 24px 0;
}
.confirm-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #dcfce7;
  color: #166534;
  font-size: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.ref-id {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  background: var(--line-soft);
  padding: 12px 16px;
  border-radius: 8px;
  margin: 8px 0 16px;
}
.ref-id-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-mute);
}
.ref-id-value {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 16px;
  font-weight: 600;
}

.summary-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 4px 16px;
  text-align: left;
  max-width: 480px;
  margin: 0 auto;
}
.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}
.summary-row:last-child { border-bottom: none; }
.summary-key { color: var(--ink-mute); font-size: 14px; }
.summary-val { font-weight: 600; text-align: right; }

.confirm-cta {
  margin: 16px auto;
  max-width: 420px;
  color: var(--ink-mute);
  font-size: 14px;
}
.confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* ── Admin dashboard ──────────────────────────────────────────── */
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.hub-summary-cards {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-bottom: 24px;
}
.hub-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}
.hub-card-name {
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 10px;
}
.hub-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.hub-stat-value {
  font-size: 20px;
  font-weight: 700;
}
.hub-stat-label {
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.admin-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
.tab-btn {
  padding: 10px 16px;
  font-weight: 600;
  color: var(--ink-mute);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-btn.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.admin-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.admin-filters label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--ink-mute);
  font-weight: 600;
}
.admin-filters select {
  min-width: 140px;
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.admin-table th, .admin-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
.admin-table th {
  font-weight: 600;
  background: var(--line-soft);
  color: var(--ink-mute);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.admin-table tbody tr:hover { background: var(--line-soft); }
.admin-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.admin-table .muted { color: var(--ink-mute); font-size: 12px; }

.var-zero { color: var(--ok); font-weight: 600; }
.var-neg  { color: var(--error-fg); font-weight: 600; }
.var-pos  { color: #b45309; font-weight: 600; }

.inline-input {
  width: 80px;
  min-height: 32px;
  padding: 4px 8px;
  font-size: 14px;
}

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.expand-content td {
  background: var(--line-soft);
  padding: 16px !important;
}
.expand-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 12px;
  font-size: 13px;
  line-height: 1.5;
}
.expand-notes {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.expand-notes label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-mute);
}
.expand-notes textarea { background: var(--surface); }

/* ── Admin gate ───────────────────────────────────────────────── */
.admin-gate {
  max-width: 360px;
  margin: 64px auto 0;
}

/* ── Demo mode banner ─────────────────────────────────────────── */
.demo-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 14px;
  margin: -16px -16px 16px;
  background: #fff7ed;
  border-bottom: 1px solid #fed7aa;
  color: #7c2d12;
  font-size: 13px;
}
@media (min-width: 768px) {
  .demo-banner { margin: -32px -32px 24px; padding: 10px 32px; }
}
.demo-banner-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}
.demo-banner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ea580c;
  animation: demo-pulse 1.6s ease-in-out infinite;
}
@keyframes demo-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}
.demo-banner-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}
.demo-link {
  color: #7c2d12;
  text-decoration: underline;
  background: none;
  border: none;
  padding: 4px 0;
  font-size: 13px;
  cursor: pointer;
  font-weight: 500;
}
.demo-link:hover { color: #431407; }