:root {
  --bg: #f5f7fb;
  --dark: #172033;
  --dark2: #101828;
  --panel: #ffffff;
  --line: #e3e8ef;
  --text: #172033;
  --muted: #667085;
  --blue: #315fca;
  --blue-soft: #edf3ff;
  --green: #16803c;
  --yellow: #b7791f;
  --red: #b91c1c;
  --purple: #6d28d9;
  --new-soft: #eef4ff;
  --work-soft: #fff7e8;
  --wait-soft: #f5efff;
  --done-soft: #edf8f0;
  --closed-soft: #f1f5f9;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 22px 60px rgba(31, 41, 55, 0.10);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
}

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

button {
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
}

.hidden {
  display: none !important;
}

.auth-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
  background:
    radial-gradient(circle at 20% 20%, rgba(49, 95, 202, 0.08), transparent 28%),
    linear-gradient(135deg, #f7f9fc 0%, #eef3fa 100%);
}

.auth-card {
  width: min(920px, 100%);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 380px;
  min-height: 620px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.auth-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.05), transparent 35%),
    #172033;
  color: #fff;
}

.auth-info h1 {
  max-width: 520px;
  margin: 12px 0 18px;
  font-size: 34px;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.auth-info p {
  max-width: 500px;
  color: #d7deea;
  line-height: 1.6;
}

.auth-box {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 34px;
  min-height: 620px;
}

.tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  margin-bottom: 28px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f3f6fb;
}

.tab {
  position: relative;
  z-index: 1;
  min-height: 42px;
  border: 0;
  padding: 9px 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.15;
  background: transparent;
}

.tab.active {
  color: var(--blue);
  background: #fff;
  box-shadow: 0 6px 16px rgba(31, 41, 55, 0.08);
}

.tab:hover {
  color: var(--blue);
  transform: none;
}

.auth-form,
.modal-card {
  display: grid;
  gap: 15px;
}

.auth-form {
  min-height: 390px;
  align-content: start;
  animation: authFormIn 0.28s ease both;
}

.auth-form.form-out {
  animation: authFormOut 0.16s ease both;
}

@keyframes authFormIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes authFormOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }

  to {
    opacity: 0;
    transform: translateY(-6px);
  }
}

.auth-form h2,
.modal-card h2,
.topbar h1,
.sidebar h2 {
  margin: 0;
  letter-spacing: -0.02em;
}

.auth-form h2 {
  margin-bottom: 2px;
  font-size: 24px;
}

label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-size: 14px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 12px 13px;
  background: #fff;
  color: var(--text);
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(49, 95, 202, 0.14);
  border-color: var(--blue);
}

.main-btn {
  border: 0;
  min-height: 44px;
  padding: 12px 18px;
  color: #fff;
  font-weight: 700;
  background: var(--blue);
  box-shadow: 0 10px 22px rgba(49, 95, 202, 0.22);
}

.main-btn:hover {
  background: #244fb4;
  box-shadow: 0 14px 26px rgba(49, 95, 202, 0.26);
}

.plain-btn {
  border: 1px solid var(--line);
  min-height: 40px;
  padding: 10px 13px;
  color: var(--text);
  background: #fff;
}

.danger-btn {
  border: 1px solid #fecaca;
  min-height: 40px;
  padding: 10px 13px;
  color: var(--red);
  font-weight: 700;
  background: #fff5f5;
}

.danger-btn:hover {
  border-color: #fca5a5;
  background: #fee2e2;
}

.plain-btn:hover,
.icon-btn:hover {
  border-color: #c8d2e0;
  background: #f8fafc;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  background: #fff;
}

#logoutBtn span {
  display: block;
  transform: translateY(-2px);
}

.small-text,
.label {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.app {
  height: 100vh;
  display: grid;
  grid-template-columns: 360px 1fr;
}

.app.sidebar-open {
  grid-template-columns: 540px 1fr;
}

.sidebar {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: #f8fafc;
}

.sidebar-head {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 24px;
  color: var(--text);
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.sidebar-head .label,
.sidebar-head span {
  color: var(--muted);
}

.sidebar-tools {
  display: grid;
  gap: 10px;
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.category-panel {
  max-height: 420px;
  overflow: auto;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.category-block {
  margin-bottom: 14px;
}

.category-block h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.mini-ticket {
  display: block;
  width: 100%;
  border: 1px solid transparent;
  border-radius: 10px;
  margin-bottom: 5px;
  padding: 9px 10px;
  text-align: left;
  background: #f3f6fb;
}

.mini-ticket:hover {
  border-color: #d8e1ee;
  background: #fff;
}

.ticket-list {
  min-height: 0;
  overflow: auto;
  padding: 14px;
}

.list-title {
  margin: 16px 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.ticket-card {
  display: grid;
  gap: 7px;
  width: 100%;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px;
  text-align: left;
  background: #fff;
}

.ticket-tone.status-new {
  border-color: #bfd2ff;
  background: var(--new-soft);
}

.ticket-tone.status-work {
  border-color: #f1d29a;
  background: var(--work-soft);
}

.ticket-tone.status-wait {
  border-color: #d9c4ff;
  background: var(--wait-soft);
}

.ticket-tone.status-done {
  border-color: #b9dfc3;
  background: var(--done-soft);
}

.ticket-tone.status-closed {
  border-color: #cbd5e1;
  background: var(--closed-soft);
}

.ticket-card.active {
  border-color: var(--blue);
  background: var(--blue-soft);
  box-shadow: 0 0 0 3px rgba(49, 95, 202, 0.10);
}

.ticket-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 10px 22px rgba(31, 41, 55, 0.06);
}

.ticket-card strong {
  font-size: 15px;
}

.card-line {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.main-area {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 30px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dashboard,
.ticket-view {
  min-height: 0;
  overflow: auto;
  padding: 26px 30px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.desk-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.desk-header h2 {
  margin: 4px 0 0;
  font-size: 26px;
}

.desk-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.desk-stats span {
  display: grid;
  min-width: 96px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--muted);
  font-size: 12px;
  background: #fff;
}

.desk-stats b {
  color: var(--text);
  font-size: 20px;
}

.kanban-board {
  display: grid;
  grid-template-columns: repeat(5, minmax(220px, 1fr));
  gap: 14px;
  align-items: start;
}

.board-column {
  min-height: 62vh;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.board-column-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.board-column-head h3 {
  margin: 0;
  font-size: 15px;
}

.board-column-head span {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  height: 26px;
  border-radius: 999px;
  color: var(--muted);
  background: #f3f6fb;
  font-weight: 700;
}

.board-items {
  display: grid;
  gap: 10px;
  padding: 12px;
}

.board-ticket {
  display: grid;
  gap: 8px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 12px;
  text-align: left;
}

.board-ticket-top,
.card-tags {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.difficulty-tag {
  width: fit-content;
  border-radius: 999px;
  padding: 5px 8px;
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.72);
}

.empty-column {
  margin: 0;
  padding: 14px;
  color: var(--muted);
  font-size: 13px;
}

.summary-card,
.category-column,
.detail-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.summary-card {
  padding: 18px;
}

.summary-card b {
  display: block;
  margin-top: 8px;
  font-size: 28px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.category-column {
  min-height: 190px;
  padding: 18px;
}

.category-column h3 {
  margin: 0 0 12px;
}

.status,
.priority,
.category-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.category-tag {
  color: #26415f;
  background: #e6eef8;
}

.status-new {
  background: var(--blue);
}

.status-work {
  background: var(--yellow);
}

.status-wait {
  background: var(--purple);
}

.status-done {
  background: var(--green);
}

.status-closed {
  background: #475569;
}

.priority-low {
  background: #0284c7;
}

.priority-medium {
  background: #ca8a04;
}

.priority-high {
  background: var(--red);
}

.ticket-view {
  grid-template-columns: 1fr;
}

.detail-card {
  padding: 24px;
}

.detail-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.detail-head.compact {
  margin-bottom: 10px;
}

.detail-head h2 {
  margin: 8px 0 10px;
  font-size: 30px;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.ticket-description {
  max-width: 920px;
  margin: 0;
  color: #344054;
  line-height: 1.55;
}

.meta-box {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px;
  background: #f8fafc;
}

.meta-box span {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 12px;
}

.detail-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
  border-radius: var(--radius);
  padding: 16px;
  background: #f8fafc;
  border: 1px solid var(--line);
}

.detail-grid-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 18px;
  align-items: start;
}

.step-form {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 180px 1fr auto;
  gap: 10px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 14px;
  margin-top: 18px;
  padding-left: 28px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--line);
}

.step {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px;
  background: #fff;
}

.step::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 15px;
  width: 12px;
  height: 12px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 1px var(--line);
}

.step.status-new::before {
  background: var(--blue);
}

.step.status-work::before {
  background: var(--yellow);
}

.step.status-wait::before {
  background: var(--purple);
}

.step.status-done::before {
  background: var(--green);
}

.step.status-closed::before {
  background: #475569;
}

.step p {
  margin: 7px 0 0;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.45);
}

.modal-card {
  width: min(620px, 100%);
  border-radius: 18px;
  padding: 26px;
  background: #fff;
  box-shadow: var(--shadow);
}

.modal-head,
.chat-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.chat-drawer {
  position: fixed;
  z-index: 30;
  top: 0;
  right: 0;
  width: min(430px, 100%);
  height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  border-left: 1px solid var(--line);
  background: #fff;
  box-shadow: -12px 0 30px rgba(31, 41, 55, 0.18);
}

.inline-chat {
  display: grid;
  grid-template-rows: auto minmax(260px, 42vh) auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

.inline-chat h3 {
  margin: 0;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.inline-messages {
  max-height: none;
}

.inline-chat-form {
  border-top: 1px solid var(--line);
}

.locked-chat {
  display: block;
  padding-bottom: 18px;
}

.locked-chat p {
  margin: 0;
  padding: 0 18px;
  color: var(--muted);
}

.chat-head {
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.messages {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 0;
  overflow: auto;
  padding: 18px;
  background: #f8fafc;
}

.message {
  max-width: 82%;
  border-radius: 14px 14px 14px 4px;
  padding: 11px 13px;
  background: #e8eef8;
}

.message.support {
  justify-self: end;
  color: #fff;
  border-radius: 14px 14px 4px 14px;
  background: var(--blue);
}

.message b {
  display: block;
  margin-bottom: 5px;
}

.message p {
  margin: 0;
  line-height: 1.4;
}

.message small {
  display: block;
  margin-top: 6px;
  opacity: 0.75;
}

.chat-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 16px;
  border-top: 1px solid var(--line);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 40;
  transform: translateX(-50%);
  border-radius: 999px;
  padding: 12px 18px;
  color: #fff;
  background: var(--dark2);
}

@media (max-width: 980px) {
  body {
    height: auto;
    overflow: auto;
  }

  .auth-card,
  .app,
  .summary-grid,
  .category-grid,
  .kanban-board,
  .meta-grid,
  .detail-actions,
  .step-form,
  .detail-grid-main {
    grid-template-columns: 1fr;
  }

  .auth-card,
  .auth-box,
  .auth-form {
    min-height: auto;
  }

  .app,
  .main-area,
  .sidebar {
    height: auto;
  }

  .app {
    min-height: 100vh;
  }

  .app.sidebar-open {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .ticket-list {
    max-height: 360px;
  }

  .topbar,
  .detail-head,
  .desk-header {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-actions,
  .desk-stats {
    justify-content: flex-start;
  }

  .board-column {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  :root {
    --radius: 12px;
    --radius-sm: 9px;
  }

  body {
    font-size: 14px;
  }

  .auth-screen {
    display: block;
    padding: 14px;
  }

  .auth-card {
    min-height: calc(100vh - 28px);
    border-radius: 16px;
  }

  .auth-info {
    padding: 28px 22px;
  }

  .auth-info h1 {
    font-size: 26px;
  }

  .auth-info p {
    font-size: 14px;
  }

  .auth-box {
    padding: 22px;
  }

  .tabs {
    margin-bottom: 20px;
  }

  .tab {
    min-height: 40px;
    padding: 8px;
    font-size: 12px;
  }

  .auth-form h2 {
    font-size: 22px;
  }

  input,
  select,
  textarea {
    padding: 11px 12px;
  }

  .sidebar-head,
  .topbar {
    padding: 18px;
  }

  .sidebar-tools,
  .ticket-list {
    padding: 12px;
  }

  .ticket-list {
    max-height: 310px;
  }

  .topbar-actions,
  .chat-form {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .topbar-actions button,
  .chat-form button {
    width: 100%;
  }

  .dashboard,
  .ticket-view {
    padding: 16px;
  }

  .desk-header h2,
  .topbar h1 {
    font-size: 24px;
  }

  .desk-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .desk-stats span {
    min-width: 0;
  }

  .kanban-board {
    gap: 12px;
  }

  .board-column-head,
  .board-items {
    padding: 12px;
  }

  .detail-card {
    padding: 16px;
  }

  .detail-head h2 {
    font-size: 26px;
  }

  .status,
  .priority,
  .category-tag {
    margin-bottom: 6px;
  }

  .detail-actions {
    padding: 12px;
  }

  .step-form {
    gap: 8px;
  }

  .timeline {
    padding-left: 22px;
  }

  .timeline::before {
    left: 7px;
  }

  .step::before {
    left: -22px;
  }

  .inline-chat {
    grid-template-rows: auto minmax(240px, 45vh) auto;
  }

  .modal {
    align-items: start;
    padding: 12px;
    overflow: auto;
  }

  .modal-card {
    padding: 18px;
    border-radius: 14px;
  }
}