* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

:root {
  --page: #f4f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --soft: #f9fafb;
  --dark: #1f2937;
  --accent: #b88746;
  --accent-dark: #8a6232;
  --danger: #b42318;
}

body {
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--page);
}

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

button {
  cursor: pointer;
}

.admin-app {
  min-height: 100vh;
}

.is-loading .login-view,
.is-loading .panel-view {
  display: none !important;
}

.login-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card,
.work-card,
.table-card,
.lead-detail,
.stat-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 16px 38px rgba(31, 41, 55, 0.06);
}

.login-card {
  width: min(430px, 100%);
  padding: 30px;
}

.app-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 6px 10px;
  border: 1px solid rgba(184, 135, 70, 0.32);
  border-radius: 999px;
  color: var(--accent-dark);
  background: #fffaf3;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.login-card h1,
.content-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.05;
}

.login-card p,
.work-card p,
.empty-detail p {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.55;
}

.login-form {
  margin-top: 24px;
  display: grid;
  gap: 16px;
}

.field-group label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.88rem;
  font-weight: 800;
}

.field-group input,
.field-group select,
.field-group textarea {
  width: 100%;
  min-height: 48px;
  padding: 0 13px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  color: var(--text);
  background: #ffffff;
}

.field-group textarea {
  min-height: 96px;
  padding: 12px 13px;
  resize: vertical;
}

.field-group input:focus,
.field-group select:focus,
.field-group textarea:focus,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.nav-item:focus-visible,
.logout-button:focus-visible {
  outline: 3px solid rgba(184, 135, 70, 0.22);
  outline-offset: 2px;
}

.primary-button,
.secondary-button,
.logout-button,
.nav-item {
  min-height: 46px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
}

.primary-button {
  border: 0;
  color: #ffffff;
  background: var(--dark);
}

.secondary-button {
  padding: 0 14px;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--card);
}

.form-feedback {
  min-height: 20px;
  color: var(--danger);
  font-size: 0.9rem;
}

.panel-view {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px;
  border-right: 1px solid var(--line);
  background: var(--card);
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand span {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #ffffff;
  background: var(--dark);
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
}

.admin-nav {
  margin-top: 34px;
  display: grid;
  gap: 8px;
}

.nav-item {
  width: 100%;
  justify-content: flex-start;
  padding: 0 12px;
  border: 0;
  color: var(--muted);
  background: transparent;
}

.nav-item.active {
  color: var(--text);
  background: var(--soft);
}

.logout-button {
  width: 100%;
  margin-top: auto;
  border: 1px solid var(--line);
  color: var(--danger);
  background: var(--card);
}

.content {
  padding: 28px;
}

.content-header,
.section-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
}

.content-header {
  margin-bottom: 28px;
}

.content-header p {
  color: var(--muted);
  font-weight: 700;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.stat-card {
  padding: 20px;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2.2rem;
  line-height: 1;
}

.work-card {
  margin-top: 18px;
  padding: 22px;
}

.leads-layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 18px;
  align-items: start;
}

.management-layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.management-form {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 16px 38px rgba(31, 41, 55, 0.06);
  display: grid;
  gap: 14px;
}

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

.check-line {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.table-card {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

td {
  font-size: 0.92rem;
}

.lead-name {
  font-weight: 800;
}

.lead-muted {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.84rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--accent-dark);
  background: #fffaf3;
  font-size: 0.78rem;
  font-weight: 900;
}

.row-button {
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  font-weight: 800;
}

.lead-detail {
  min-height: 420px;
  padding: 20px;
}

.empty-detail,
.empty-state {
  padding: 34px 18px;
  color: var(--muted);
  text-align: center;
}

.empty-detail i {
  color: var(--accent-dark);
  font-size: 2rem;
}

.detail-head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.detail-head h2 {
  font-size: 1.45rem;
}

.detail-grid {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.detail-item {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.detail-item span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.status-form,
.note-form {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.notes-list {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.note-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.note-card p {
  line-height: 1.45;
}

.note-card small {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .panel-view,
  .leads-layout,
  .management-layout,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }
}

@media (max-width: 640px) {
  .content {
    padding: 18px;
  }

  .content-header,
  .section-toolbar {
    align-items: start;
    flex-direction: column;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}