:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #171717;
  --muted: #626773;
  --line: #e5e7eb;
  --red: #df000b;
  --red-dark: #b80008;
  --red-soft: #ffe7e8;
  --gray-chip: #eef0f3;
  --dark-chip: #555b66;
  --shadow: 0 24px 60px rgba(17, 17, 17, 0.08);
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 280px minmax(0, 1fr);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 28px 22px;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 6px;
  color: var(--panel);
  background: var(--red);
  font-weight: 900;
}

.eyebrow,
.section-label {
  margin: 0 0 5px;
  color: var(--red);
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 1.2rem;
}

h2 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
}

h3 {
  font-size: 1.05rem;
}

.nav-list {
  display: grid;
  gap: 8px;
}

.nav-item {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 12px;
  border: 0;
  border-radius: 6px;
  padding: 0 12px;
  color: var(--muted);
  background: transparent;
  text-align: left;
  font-weight: 900;
}

.nav-item span:first-child {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  font-size: 1.1rem;
}

.nav-item.active,
.nav-item:hover {
  color: var(--red);
  background: var(--red-soft);
}

.sidebar-create {
  width: 100%;
}

.sidebar-section {
  display: grid;
  gap: 10px;
  margin-top: auto;
}

.mini-stat {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.mini-stat strong {
  color: var(--ink);
}

.main-content {
  display: flex;
  flex-direction: column;
  gap: 22px;
  min-width: 0;
  padding: 28px;
}

.dashboard-view,
.tickets-view,
.reports-view,
.ai-chat-view,
.ticket-detail {
  display: grid;
  gap: 22px;
}

.dashboard-view[hidden],
.tickets-view[hidden],
.reports-view[hidden],
.ai-chat-view[hidden],
.ticket-detail[hidden],
.filter-panel[hidden],
.compose-panel[hidden] {
  display: none;
}

.topbar,
.queue-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar-actions,
.tool-buttons,
.pager,
.detail-actions,
.compose-actions > div {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-button,
.ghost-icon,
.primary-button,
.secondary-button,
.outline-button,
.link-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 6px;
  border: 1px solid var(--line);
  padding: 0 14px;
  color: var(--ink);
  background: var(--panel);
  font-weight: 900;
}

.icon-button,
.ghost-icon {
  width: 42px;
  padding: 0;
  font-size: 1.15rem;
}

.primary-button {
  border-color: var(--red);
  color: var(--panel);
  background: var(--red);
  box-shadow: 0 14px 30px rgba(223, 0, 11, 0.18);
}

.primary-button:hover {
  background: var(--red-dark);
}

.link-button {
  border-color: transparent;
  color: var(--red);
  background: transparent;
}

.outline-button,
.secondary-button {
  color: var(--ink);
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.metrics-grid,
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.dashboard-grid {
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1.2fr);
}

.metric,
.panel,
.queue-tools,
.filter-panel,
.table-wrap,
.queue-footer,
.detail-card,
.compose-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.metric {
  min-height: 92px;
  padding: 18px;
}

.metric span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.metric strong {
  display: block;
  margin-top: 8px;
  font-size: 1.85rem;
}

.panel {
  display: grid;
  gap: 18px;
  padding: 18px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.type-summary,
.priority-list,
.ticket-list,
.user-list {
  display: grid;
  gap: 10px;
}

.type-row,
.priority-item {
  display: flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  background: var(--panel);
}

.priority-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 10px;
  text-align: left;
}

.priority-item strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.priority-item small {
  grid-column: 2;
  color: var(--muted);
}

.team-panel {
  grid-column: 1 / -1;
}

.user-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
}

.user-avatar {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--panel);
  background: var(--red);
  font-weight: 900;
}

.user-row div:nth-child(2) {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.user-row span,
.user-row small {
  overflow: hidden;
  color: var(--muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.board {
  display: grid;
  grid-template-columns: repeat(4, minmax(230px, 1fr));
  gap: 14px;
  align-items: start;
}

.column {
  display: grid;
  min-height: 300px;
  gap: 12px;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
}

.column-count {
  display: grid;
  min-width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 6px;
  color: var(--muted);
  background: var(--line);
  font-weight: 900;
}

.ticket-card {
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--red);
  border-radius: 8px;
  padding: 14px;
  background: var(--panel);
  box-shadow: 0 8px 18px rgba(17, 17, 17, 0.04);
  text-align: left;
}

.ticket-card:hover {
  border-color: rgba(223, 0, 11, 0.45);
  box-shadow: 0 16px 34px rgba(17, 17, 17, 0.08);
}

.ticket-card h4 {
  font-size: 0.98rem;
  line-height: 1.3;
}

.ticket-meta,
.ticket-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
}

.empty-state {
  min-height: 110px;
  border: 1px dashed #c6d0d5;
  border-radius: 8px;
  display: grid;
  place-items: center;
  padding: 18px;
  color: var(--muted);
  text-align: center;
  background: rgba(255, 255, 255, 0.52);
}

.quick-filters {
  display: grid;
  grid-template-columns: repeat(5, minmax(110px, 1fr));
  min-width: min(680px, 100%);
  overflow: hidden;
  border-radius: 26px;
  background: var(--panel);
}

.type-filter {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 0;
  border-left: 1px solid var(--line);
  color: var(--ink);
  background: var(--panel);
  font-weight: 700;
}

.type-filter:first-child {
  border-left: 0;
}

.type-filter.active {
  color: var(--panel);
  background: var(--red);
}

.type-filter strong {
  display: inline-grid;
  min-width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  font-size: 12px;
}

.queue-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 26px;
}

.search-box {
  display: flex;
  width: min(430px, 100%);
  min-height: 42px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 0 14px;
  color: var(--muted);
}

.search-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
}

.filter-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr));
  gap: 12px;
  padding: 16px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

label input,
label select,
label textarea,
.title-input {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--panel);
}

.table-wrap {
  overflow: auto;
}

.ticket-table {
  width: 100%;
  min-width: 1320px;
  border-collapse: collapse;
  font-size: 13px;
}

.ticket-table th,
.ticket-table td {
  height: 45px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 0 12px;
  text-align: left;
  white-space: nowrap;
}

.ticket-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #fbfbfc;
  font-weight: 700;
}

.ticket-table th:first-child,
.ticket-table td:first-child {
  width: 44px;
  text-align: center;
}

.ticket-table tbody tr:hover {
  background: #fffafa;
}

.title-cell {
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.id-button {
  border: 0;
  color: var(--ink);
  background: transparent;
}

.id-button:hover {
  color: var(--red);
  text-decoration: underline;
}

.status-pill,
.chip {
  display: inline-flex;
  min-height: 25px;
  align-items: center;
  border-radius: 6px;
  padding: 0 12px;
  font-size: 12px;
  font-weight: 900;
}

.status-pill,
.dark-chip {
  color: var(--panel);
  background: var(--dark-chip);
}

.red-chip {
  color: var(--panel);
  background: var(--red);
}

.gray-chip {
  color: var(--ink);
  background: var(--gray-chip);
}

.queue-footer {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  padding: 0 22px;
  color: var(--ink);
  font-size: 13px;
}

.queue-footer label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.queue-footer select {
  width: 76px;
  padding: 7px;
}

.detail-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
}

.detail-title-block {
  display: grid;
  gap: 6px;
}

.detail-title-block p,
.summary-strip span {
  color: var(--muted);
  font-size: 13px;
}

#detailTitle {
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: clamp(22px, 4vw, 28px);
}

.summary-strip {
  display: grid;
  grid-template-columns: 180px 1fr 190px 140px;
  gap: 22px;
  align-items: end;
}

.summary-strip > div {
  display: grid;
  gap: 7px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.detail-card {
  overflow: hidden;
  box-shadow: var(--shadow);
}

.tabs {
  display: flex;
  gap: 34px;
  padding: 24px 42px 0;
  border-bottom: 1px solid var(--line);
}

.tab {
  min-height: 46px;
  border: 0;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  background: transparent;
  font-weight: 700;
}

.tab.active {
  color: var(--ink);
  border-bottom-color: var(--red);
}

.tab-panel {
  min-height: 430px;
  padding: 28px 56px 46px;
}

.accordion-section {
  display: grid;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding: 0 0 26px;
  margin-bottom: 22px;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 28px;
  margin: 0;
}

.detail-grid div {
  display: grid;
  gap: 7px;
}

.detail-grid .wide {
  grid-column: 1 / -1;
}

dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

dd {
  margin: 0;
}

.description-box {
  min-height: 180px;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 16px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline article {
  display: grid;
  gap: 4px;
  border-left: 4px solid var(--red);
  padding: 10px 14px;
  background: var(--bg);
}

.timeline span,
.empty-panel p {
  color: var(--muted);
}

.note-box textarea {
  min-height: 120px;
  resize: vertical;
}

.empty-panel {
  display: grid;
  min-height: 240px;
  place-items: center;
  align-content: center;
  gap: 12px;
  color: var(--muted);
  text-align: center;
}

.ai-panel,
.ai-results {
  display: grid;
  gap: 18px;
}

.ai-panel {
  min-height: 260px;
  align-content: center;
  justify-items: start;
}

.ai-panel p,
.ai-result-header p {
  max-width: 680px;
  color: var(--muted);
  line-height: 1.5;
}

.ai-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.ai-grid article,
.ai-draft {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fbfbfc;
}

.ai-grid p,
.ai-draft p,
.ai-grid li {
  color: var(--ink);
  line-height: 1.5;
}

.ai-grid ul {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 20px;
}

.ai-draft p {
  white-space: pre-wrap;
}

.report-list {
  display: grid;
  gap: 12px;
}

.report-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 14px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #fbfbfc;
}

.report-row div:first-child {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.report-row span {
  color: var(--muted);
  font-size: 13px;
}

.report-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--gray-chip);
}

.report-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--red);
}

.chat-shell {
  display: grid;
  min-height: min(720px, calc(100vh - 150px));
  grid-template-rows: auto minmax(320px, 1fr) auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.chat-messages {
  display: grid;
  align-content: start;
  gap: 12px;
  overflow-y: auto;
  padding: 20px;
  background: #fbfbfc;
}

.chat-message {
  display: grid;
  gap: 6px;
  max-width: min(720px, 88%);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  background: var(--panel);
  line-height: 1.5;
}

.chat-message.is-user {
  justify-self: end;
  border-color: #25272e;
  color: var(--panel);
  background: #25272e;
}

.chat-message span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.chat-message.is-user span {
  color: rgba(255, 255, 255, 0.72);
}

.chat-message p {
  white-space: pre-wrap;
}

.chat-message.is-pending p {
  color: var(--muted);
}

.chat-message.is-error {
  border-color: #ffd0d3;
  color: var(--red-dark);
  background: #fff3f4;
}

.chat-citations {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 4px;
}

.chat-citations strong,
.chat-citations a {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  border-radius: 999px;
  padding: 0 9px;
  font-size: 12px;
  font-weight: 900;
}

.chat-citations strong {
  color: var(--muted);
  background: var(--gray-chip);
}

.chat-citations a {
  max-width: 260px;
  overflow: hidden;
  color: var(--red-dark);
  background: var(--red-soft);
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-citations a:hover {
  text-decoration: underline;
}

.chat-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 12px;
  padding: 16px;
  border-top: 1px solid var(--line);
}

.chat-form textarea {
  min-height: 74px;
  max-height: 180px;
  resize: vertical;
}

.chat-form .primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}

.compose-panel {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 10;
  width: min(680px, calc(100vw - 36px));
  max-height: calc(100vh - 36px);
  overflow: auto;
  box-shadow: var(--shadow);
}

.compose-panel form {
  display: grid;
  gap: 16px;
  padding: 24px;
}

.compose-top {
  display: grid;
  grid-template-columns: minmax(110px, 140px) minmax(150px, 180px) auto;
  align-items: end;
  gap: 14px;
}

.title-input {
  font-size: 22px;
}

.compose-strip,
.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.form-grid {
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-section {
  display: grid;
  gap: 16px;
}

.compose-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 18px;
  }

  .nav-list {
    display: flex;
    grid-column: 1 / -1;
    overflow-x: auto;
  }

  .sidebar-create,
  .sidebar-section {
    display: none;
  }

  .board {
    grid-template-columns: repeat(2, minmax(240px, 1fr));
  }

  .queue-header,
  .queue-tools {
    align-items: stretch;
    flex-direction: column;
  }

  .quick-filters {
    min-width: 0;
  }
}

@media (max-width: 720px) {
  .main-content {
    padding: 18px;
  }

  .topbar,
  .compose-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .metrics-grid,
  .dashboard-grid,
  .board,
  .summary-strip,
  .filter-panel,
  .compose-strip,
  .form-grid,
  .compose-top,
  .report-row,
  .chat-form,
  .ai-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .quick-filters {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
    border-radius: 8px;
  }

  .tabs {
    gap: 12px;
    overflow-x: auto;
    padding: 18px 18px 0;
  }

  .tab-panel {
    padding: 22px 18px;
  }

  .chat-shell {
    min-height: calc(100vh - 120px);
  }

  .chat-message {
    max-width: 100%;
  }

  .compose-actions > div,
  .compose-actions button,
  .primary-button,
  .secondary-button {
    width: 100%;
  }
}