/* ── MES shared base styles ─────────────────────────────────────────────────
   Loaded after Tailwind CDN on every page.
   Uses raw CSS custom properties (no @apply) so it works as a plain CSS file.
   ─────────────────────────────────────────────────────────────────────────── */

/* 1. CSS Custom Properties */
:root {
  --mes-primary:   #5B5BD6;
  --mes-success:   #30A46C;
  --mes-danger:    #E5484D;
  --mes-body:      #FAFAFA;
  --mes-card:      #F6F6F7;
  --mes-border:    #E4E4E7;
  --mes-border-2:  #D4D4D8;
  --mes-text:      #18181B;
  --mes-text-2:    #3F3F46;
  --mes-text-3:    #A1A1AA;
  --mes-label:     #71717A;
  --mes-surface:   #FFFFFF;
  --mes-shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --mes-shadow:    0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --mes-radius:    8px;
  --mes-radius-sm: 5px;
}

/* 2. Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--mes-body);
  color: var(--mes-text);
  display: flex;
  overflow: hidden;
  height: 100dvh;
  touch-action: manipulation;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 3. Layout — sidebar + main */
.sidebar {
  width: 30%;
  min-width: 260px;
  background: var(--mes-surface);
  border-right: 1px solid var(--mes-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 1.25rem;
}

.sidebar h2 {
  font-size: 1.0rem;
  font-weight: 600;
  color: var(--mes-text);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.sidebar h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--mes-text-2);
  margin-bottom: 0.5rem;
}

.sidebar .divider {
  border: none;
  border-top: 1px solid var(--mes-border);
  margin: 0.75rem 0;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.main-header {
  padding: 0.5rem 1.5rem 0.75rem;
  border-bottom: 1px solid var(--mes-border);
  background: var(--mes-surface);
  display: flex;
  align-items: center;
  flex-wrap: wrap;          /* enable two rows */
  gap: 0.3rem 0.75rem;
}

/* Row 1: sidebar toggle + nav dropdowns */
.sidebar-toggle  { order: 1; }
.main-header .nav-dropdown { order: 1; }

/* First nav dropdown pushed to right — all nav items follow */
#navDropdown { margin-left: auto; }

/* Row 2: title — full width forces wrap to new line */
.main-header-text {
  flex: 0 0 100%;
  min-width: 0;
  order: 2;
  padding-top: 0.35rem;
}

.main-header h1 {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--mes-text);
}

.main-header p {
  font-size: 0.8rem;
  color: var(--mes-label);
  margin-top: 0.2rem;
}

/* 4. Navigation */
.nav-dropdown { position: relative; }

.nav-btn {
  background: none;
  border: none;
  color: #3F3F46;
  border-radius: 5px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background 120ms ease, color 120ms ease;
  font-family: inherit;
  line-height: 1.5;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  /* Override base button defaults that break flex layout */
  width: auto;
  min-height: 0;
  margin-bottom: 0;
}

/* CSS border chevron — rotates on open */
.nav-btn::after {
  content: '';
  display: inline-block;
  width: 0.42rem;
  height: 0.42rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-1.5px);
  opacity: 0.45;
  transition: transform 150ms ease, opacity 150ms ease;
  flex-shrink: 0;
}

.nav-dropdown.open .nav-btn::after {
  transform: rotate(-135deg) translateY(1.5px);
  opacity: 0.65;
}

.nav-btn:hover {
  background: rgba(0,0,0,0.04);
  color: #222;
}

.nav-dropdown.open .nav-btn {
  background: rgba(91,91,214,0.07);
  color: var(--mes-primary);
}

/* Smooth fade + slide using visibility trick (no display:none) */
.nav-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--mes-surface);
  border: 1px solid var(--mes-border);
  border-radius: var(--mes-radius);
  box-shadow: 0 6px 24px rgba(0,0,0,0.10), 0 1px 3px rgba(0,0,0,0.06);
  z-index: 1000;
  min-width: 168px;
  padding: 0.3rem 0;
  /* hidden state */
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 140ms ease, transform 140ms ease, visibility 0s linear 140ms;
}

.nav-dropdown.open .nav-menu {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  visibility: visible;
  transition: opacity 140ms ease, transform 140ms ease, visibility 0s linear 0s;
}

.nav-menu a {
  display: block;
  position: relative;
  padding: 0.42rem 1rem;
  color: var(--mes-text-2);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background 100ms ease, color 100ms ease;
}

.nav-menu a:hover {
  background: var(--mes-card);
  color: var(--mes-text);
}

/* Active page indicator — left-border accent + tinted bg */
.nav-menu a.nav-active {
  background: #EEEEFF;
  color: var(--mes-primary);
  font-weight: 600;
}

.nav-menu a.nav-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--mes-primary);
  border-radius: 0 2px 2px 0;
}

/* 5. Forms */
.form-group { margin-bottom: 0.5rem; }

.form-group label {
  display: block;
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--mes-label);
  margin-bottom: 0.2rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--mes-border);
  border-radius: var(--mes-radius-sm);
  font-size: 0.875rem;
  outline: none;
  background: var(--mes-surface);
  color: var(--mes-text);
  font-family: inherit;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--mes-primary);
  box-shadow: 0 0 0 3px rgba(91,91,214,0.12);
}

.form-row { display: flex; gap: 0.5rem; }
.form-row .form-group { flex: 1; }

/* 6. Buttons */
button {
  background: var(--mes-primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.875rem;
  width: 100%;
  margin-bottom: 0.5rem;
  min-height: 44px;
  font-family: inherit;
  transition: background 150ms ease, transform 100ms ease;
  line-height: 1.4;
}

button:hover { background: #4A4AC4; }
button:active { transform: scale(0.98); }
button:disabled { background: #A5A5E8; cursor: not-allowed; transform: none; }

.btn-green { background: var(--mes-success); }
.btn-green:hover { background: #288A5C; }
.btn-green:disabled { background: #8FCDB2; }

.btn-row-edit {
  font-size: 0.7rem; font-weight: 600; padding: 0.15rem 0.5rem;
  background: #EEF2FF; color: #5B5BD6; border: 1px solid #C7D2FE;
  border-radius: 4px; cursor: pointer; white-space: nowrap;
}
.btn-row-edit:hover { background: #E0E7FF; }

.btn-cancel-edit {
  font-size: 0.75rem; font-weight: 600; padding: 0.3rem 0.6rem;
  width: auto; flex-shrink: 0;
  background: #F4F4F5; color: #71717A; border: 1px solid #D4D4D8;
  border-radius: 6px; cursor: pointer;
}
.btn-cancel-edit:hover { background: #E4E4E7; }

.btn-sm {
  width: auto;
  min-height: 0;
  padding: 0.18rem 0.5rem;
  font-size: 0.7rem;
  margin: 0 0.1rem 0 0;
  border-radius: 4px;
  font-weight: 500;
}

.btn-sm-confirm { background: var(--mes-success); }
.btn-sm-confirm:hover { background: #288A5C; }
.btn-sm-del, .btn-sm-delete { background: var(--mes-danger); }
.btn-sm-del:hover, .btn-sm-delete:hover { background: #CC2F33; }
.btn-sm-print { background: #E67E22; }
.btn-sm-print:hover { background: #CA6F1E; }
.btn-sm-blue { background: var(--mes-primary); }
.btn-sm-blue:hover { background: #4A4ABF; }

/* Batch Jobs */
.batch-job-list { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.5rem; }
.batch-job-row {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  background: var(--mes-surface);
  border: 1px solid var(--mes-border);
  border-radius: var(--mes-radius);
}
.batch-job-row button { flex-shrink: 0; margin-top: 0.1rem; }
.batch-job-info { display: flex; flex-direction: column; gap: 0.18rem; flex: 1; min-width: 0; }
.job-run-controls { display: flex; flex-direction: column; align-items: flex-end; gap: 0.25rem; flex-shrink: 0; }
.job-month-picker { font-size: 0.72rem; padding: 0.12rem 0.3rem; border: 1px solid var(--mes-border); border-radius: 4px; color: var(--mes-text-2); background: var(--mes-surface); width: auto; cursor: pointer; }
.batch-job-name { font-size: 0.78rem; font-weight: 600; color: var(--mes-text); }
.batch-job-desc { font-size: 0.7rem; color: var(--mes-label); line-height: 1.4; }

/* Plant Settings block */
.sys-settings-block { margin-bottom: 0.5rem; }
.sys-field-row {
  display: flex; align-items: center; gap: 0.4rem;
  margin-bottom: 0.3rem;
}
.sys-field-label {
  font-size: 0.72rem; color: var(--mes-label);
  width: 5.5rem; flex-shrink: 0;
}
.sys-field-select {
  flex: 1; padding: 0.12rem 0.3rem;
  border: 1px solid var(--mes-border-2); border-radius: 4px;
  font-size: 0.72rem; font-family: inherit;
  background: var(--mes-surface); color: var(--mes-text);
}
.sys-field-select:focus { outline: none; border-color: var(--mes-primary); }

/* Last test result row */
.last-result-row {
  display: flex; align-items: center; gap: 0.3rem;
  min-height: 1rem;
}
.lr-badge {
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.02em;
  padding: 0.04rem 0.32rem; border-radius: 3px; flex-shrink: 0;
}
.lr-badge:empty { display: none; }
.lr-badge.ok  { background: #ECFDF5; color: #15803D; }
.lr-badge.err { background: #FFF1F2; color: #B91C1C; }
.lr-ts      { font-size: 0.64rem; color: var(--mes-text-3); flex-shrink: 0; }
.lr-summary { font-size: 0.64rem; color: var(--mes-label); }

/* Schedule config row */
.job-sched {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0.35rem;
  padding-top: 0.35rem; margin-top: 0.25rem;
  border-top: 1px dashed var(--mes-border);
}
.sched-toggle {
  display: flex; align-items: center; gap: 0.22rem;
  font-size: 0.72rem; color: var(--mes-text-2); cursor: pointer;
  user-select: none;
}
.sched-toggle input[type="checkbox"] { accent-color: var(--mes-primary); cursor: pointer; }
.sched-label { font-size: 0.72rem; color: var(--mes-label); }
.sched-num {
  width: 2.8rem; padding: 0.1rem 0.3rem; text-align: center;
  border: 1px solid var(--mes-border-2); border-radius: 4px;
  font-size: 0.72rem; font-family: ui-monospace, monospace;
  background: var(--mes-surface); color: var(--mes-text);
  -moz-appearance: textfield;
}
.sched-num::-webkit-outer-spin-button,
.sched-num::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.sched-num:focus { outline: none; border-color: var(--mes-primary); }
.sched-next { font-size: 0.68rem; color: var(--mes-text-3); flex: 1; min-width: 0; }
.btn-sm-ghost {
  background: transparent; color: var(--mes-primary);
  border: 1px solid var(--mes-border-2); font-size: 0.68rem;
}
.btn-sm-ghost:hover { background: var(--mes-card); }
.btn-sm-ghost:disabled { color: var(--mes-text-3); border-color: var(--mes-border); }

/* Job result cards (right frame) */
.job-result-card {
  background: var(--mes-surface);
  border: 1px solid var(--mes-border);
  border-radius: var(--mes-radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.job-result-header {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--mes-border);
  background: var(--mes-card);
}
.job-result-name { font-weight: 600; font-size: 0.82rem; flex: 1; color: var(--mes-text); }
.job-result-ts   { font-size: 0.72rem; color: var(--mes-text-3); white-space: nowrap; }
.job-result-badge {
  font-size: 0.7rem; font-weight: 600; padding: 0.15rem 0.5rem;
  border-radius: 99px; white-space: nowrap;
}
.job-result-badge.running { background: #EEF2FF; color: var(--mes-primary); }
.job-result-badge.ok      { background: #ECFDF5; color: var(--mes-success); }
.job-result-badge.warn    { background: #FFF7ED; color: #C2410C; }
.job-result-badge.err     { background: #FFF1F2; color: var(--mes-danger); }
.job-result-output {
  padding: 0.65rem 0.75rem;
  font-size: 0.76rem;
  font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
  color: var(--mes-text-2);
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}

/* 6b. Pager — shared prev/next pagination bar */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  font-size: 0.82rem;
  color: #52525B;
}
.pager button {
  width: auto;
  min-height: 0;
  margin-bottom: 0;
  padding: 0.25rem 0.7rem;
  border: 1px solid #E4E4E7;
  border-radius: 6px;
  background: #fff;
  color: #3F3F46;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
}
.pager button:hover:not(:disabled) { background: #F4F4F5; }
.pager button:disabled { opacity: 0.4; cursor: default; background: #fff; }

/* 7. Tables — bottom-border-only rows, rounded wrapper */
.table-wrapper {
  border-radius: var(--mes-radius);
  border: 1px solid var(--mes-border);
  overflow: hidden;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.recent-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.775rem;
}

.recent-table th {
  background: var(--mes-card);
  color: var(--mes-label);
  font-weight: 600;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--mes-border);
}

.recent-table td {
  padding: 0.3rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--mes-border);
  color: var(--mes-text);
}

.recent-table tr:last-child td { border-bottom: none; }
.recent-table tr:hover td { background: var(--mes-card); }
.recent-table tr.selected td { background: #EEF0FF !important; }

/* 8. Cards — left-aligned, white, 8px radius */
.inv-cards {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.inv-card {
  flex: 1;
  min-width: 60px;
  background: var(--mes-surface);
  border: 1px solid var(--mes-border);
  border-radius: var(--mes-radius);
  text-align: left;
  padding: 0.6rem 0.75rem;
  box-shadow: var(--mes-shadow-sm);
}

.inv-card-label {
  font-size: 0.67rem;
  color: var(--mes-label);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.inv-card-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mes-text);
  letter-spacing: -0.02em;
}

/* 9. Badges — pill shape, muted bg + dark text */
.badge {
  display: inline-block;
  padding: 0.12rem 0.5rem;
  border-radius: 20px;
  font-size: 0.67rem;
  font-weight: 600;
  margin: 0.05rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.badge-receive   { background: #DCFCE7; color: #166534; }
.badge-issue     { background: #FEE2E2; color: #991B1B; }
.badge-return    { background: #FEF3C7; color: #92400E; }
.badge-adjust    { background: #EDE9FE; color: #5B21B6; }
.badge-transfer  { background: #E0F2FE; color: #075985; }
.badge-draft     { background: #FEF9C3; color: #854D0E; }
.badge-confirmed { background: #DCFCE7; color: #166534; }
.badge-deleted   { background: #F4F4F5; color: #71717A; }
.badge-active    { background: #DCFCE7; color: #166534; }
.badge-inactive  { background: #F4F4F5; color: #71717A; }
.badge-maint     { background: #FEF3C7; color: #92400E; }

/* 10. Status messages */
.status-msg {
  font-size: 0.8rem;
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
  display: none;
  border: 1px solid transparent;
}

.status-msg.show { display: block; }
.status-ok    { background: #F0FDF4; color: #166534; border-color: #BBF7D0; }
.status-error { background: #FEF2F2; color: #991B1B; border-color: #FECACA; }

/* 11. Chat / Messages */
.chat-messages {
  flex: 1;
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;
  padding: 1rem 1.5rem;
}

.message {
  max-width: 800px;
  margin: 0 auto 1rem auto;
  display: flex;
  gap: 0.75rem;
}

.message-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  flex-shrink: 0;
}

.message-user .message-avatar { background: var(--mes-primary); color: #fff; }
.message-assistant .message-avatar {
  background: var(--mes-card);
  color: var(--mes-label);
  border: 1px solid var(--mes-border);
}

.message-body { flex: 1; min-width: 0; }

.message-role {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--mes-label);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.message-content {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--mes-text);
}

.message-content p { margin-bottom: 0.5rem; }

.message-content pre {
  background: var(--mes-card);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.82rem;
  border: 1px solid var(--mes-border);
}

.message-content code {
  background: var(--mes-card);
  padding: 0.12rem 0.35rem;
  border-radius: 4px;
  font-size: 0.82rem;
  color: var(--mes-primary);
}

.message-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.message-content .table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--mes-radius);
  border: 1px solid var(--mes-border);
}

.message-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.5rem 0;
  font-size: 0.83rem;
}

.message-content th,
.message-content td {
  padding: 0.4rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid var(--mes-border);
}

.message-content th {
  background: var(--mes-card);
  font-weight: 600;
  color: var(--mes-text-2);
  font-size: 0.78rem;
}

.message-content tr:hover td { background: var(--mes-card); }

.sources {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: var(--mes-label);
}

.sources summary { cursor: pointer; font-weight: 500; }
.sources ul { margin-top: 0.25rem; padding-left: 1.25rem; }

/* 12. Spinner */
@keyframes spin     { to { transform: rotate(360deg); } }
@keyframes blink    { 50% { opacity: 0.3; } }
@keyframes sfcblink { 50% { opacity: 0.3; } }

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--mes-border);
  border-top-color: var(--mes-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 0.4rem;
}

/* 13. Sample questions / chips */
.sample-questions {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding: 0.5rem 0;
}

.sample-btn {
  background: var(--mes-surface);
  color: var(--mes-text-2);
  border: 1px solid var(--mes-border);
  border-radius: 20px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  cursor: pointer;
  font-weight: 500;
  width: auto;
  min-height: 0;
  margin-bottom: 0;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease;
  font-family: inherit;
}

.sample-btn:hover {
  background: var(--mes-card);
  border-color: var(--mes-border-2);
  color: var(--mes-text);
}

/* 14b. Page audio button — plays pre-generated MP3 via playAudio(name) */
.btn-page-audio {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 600;
  background: none;
  border: 1px solid var(--mes-border-2);
  border-radius: 4px;
  cursor: pointer;
  color: var(--mes-label);
  min-height: 0;
  width: auto;
  margin-bottom: 0;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.btn-page-audio:hover { background: var(--mes-card); color: var(--mes-text); }
.btn-page-audio.playing { border-color: var(--mes-primary); color: var(--mes-primary); background: #EEEEF6; }

/* 14c. Shared tab bar — used by sales-demand, sales, transfer, and all copilot pages */
.so-tab-bar {
  display: flex; gap: 0;
  border-bottom: 2px solid #E4E4E7;
  background: #FAFAFA;
  padding: 0 1rem;
  flex-shrink: 0;
}
.so-tab-btn {
  padding: 0.5rem 1.1rem;
  font-size: 0.82rem; font-weight: 600;
  border: none; background: none;
  color: #71717A; cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 120ms, border-color 120ms;
  min-height: 0; width: auto;
}
.so-tab-btn.active { color: #5B5BD6; border-bottom-color: #5B5BD6; }
.so-tab-btn:hover:not(.active) { color: #3F3F46; }
.so-tab-pane { flex: 1; min-height: 0; overflow-y: auto; }
.so-copilot-pane { display: flex; flex-direction: column; overflow: hidden; }
.so-copilot-pane .chat-messages { flex: 1; min-height: 0; overflow-y: auto; }

/* 14. Chat input area */
.chat-input-area {
  padding: 0.75rem 1.5rem;
  border-top: 1px solid var(--mes-border);
  background: var(--mes-surface);
}

.chat-input-wrapper {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
}

.chat-input-wrapper input {
  flex: 1;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--mes-border);
  border-radius: 6px;
  font-size: 16px;
  outline: none;
  background: var(--mes-surface);
  color: var(--mes-text);
  font-family: inherit;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.chat-input-wrapper input:focus {
  border-color: var(--mes-primary);
  box-shadow: 0 0 0 3px rgba(91,91,214,0.12);
}

.chat-input-wrapper button {
  width: auto;
  margin-bottom: 0;
  min-height: 0;
  padding: 0.55rem 1rem;
}

/* 15. Mobile sidebar toggle & overlay */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--mes-text);
  font-size: 1.3rem;
  width: 40px;
  min-height: 40px;
  padding: 0;
  margin: 0;
  cursor: pointer;
  flex-shrink: 0;
  border-radius: 6px;
  transition: background 150ms ease;
}

.sidebar-toggle:hover { background: var(--mes-card); }
.sidebar-overlay { display: none; }

/* 16. Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--mes-border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--mes-label); }

/* 17. Mobile — bottom-sheet sidebar */
/* 18. Combo-box (MesCombo) */
.combo-wrap { position: relative; }

.combo-dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 0; right: 0;
  background: var(--mes-surface);
  border: 1px solid var(--mes-border-2);
  border-radius: var(--mes-radius-sm);
  max-height: 192px;
  overflow-y: auto;
  z-index: 300;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.06);
  display: none;
}

.combo-dropdown.open { display: block; }

.combo-option {
  padding: 0.38rem 0.65rem;
  font-size: 0.82rem;
  cursor: pointer;
  border-bottom: 1px solid var(--mes-border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--mes-text);
}

.combo-option:last-child { border-bottom: none; }
.combo-option:hover, .combo-option.focused { background: #EEF2FF; }
.combo-option-sub { color: var(--mes-label); margin-left: 0.25rem; font-weight: 400; }

/* 19. Mobile — bottom-sheet sidebar */
@media (max-width: 767px) {
  body { flex-direction: column; }
  .main { order: 1; flex: 1; }
  .sidebar { order: 2; }

  .sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .sidebar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    width: 100%;
    min-width: 0;
    max-height: 85dvh;
    border-right: none;
    border-top: 1px solid var(--mes-border);
    box-shadow: 0 -8px 24px rgba(0,0,0,0.12);
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    padding: 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }

  .sidebar.open { transform: translateY(0); }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 999;
  }

  .sidebar-overlay.active { display: block; }

  .recent-table { font-size: 0.7rem; }
  .recent-table th, .recent-table td { padding: 0.2rem 0.35rem; }

  .main-header {
    padding: 0.4rem 0.75rem 0.6rem;
    padding-top: calc(0.4rem + env(safe-area-inset-top));
    gap: 0.15rem 0.3rem;
  }

  .main-header h1 { font-size: 1.15rem; }

  /* Compact nav buttons on mobile so 4 items fit on one row */
  .nav-btn {
    font-size: 0.68rem;
    padding: 0.1rem 0.28rem;
  }

  /* Hide chevron on mobile to save horizontal space */
  .nav-btn::after { display: none; }

  .nav-menu { right: auto; left: 0; }
  .chat-messages { padding: 0.75rem 1rem; }

  .chat-input-area {
    padding: 0.5rem 0.75rem;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
  }
}