:root {
  color-scheme: light;
  --bg: #eef3f8;
  --card: #ffffff;
  --text: #152033;
  --muted: #58708e;
  --line: #d6e1ec;
  --brand: #005a9c;
  --brand-2: #0b6ab3;
  --danger: #b31942;
  --success: #0a7f4f;
  --warning: #d97706;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, #f4f8fd 0%, #e9f0f7 100%);
  color: var(--text);
}

.layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 6px 16px rgba(13, 39, 80, 0.06);
}

.login-card {
  max-width: 460px;
  margin: 50px auto;
}

h1,
h2,
h3 {
  margin: 0 0 10px;
}

p {
  margin: 0;
}

.muted {
  color: var(--muted);
}

.form-grid {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

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

input,
select,
textarea {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}

button:hover {
  background: var(--brand-2);
}

button.danger {
  background: var(--danger);
}

.error {
  color: var(--danger);
  min-height: 18px;
}

.hidden {
  display: none;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.topbar-actions {
  display: flex;
  gap: 8px;
}

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

.stat {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #f8fbff;
}

.stat .value {
  font-size: 28px;
  font-weight: 700;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.toolbar .row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.checkbox-inline {
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.stage-column {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  display: grid;
  gap: 8px;
}

.stage-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
}

.lead-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #fff;
  display: grid;
  gap: 6px;
  cursor: pointer;
}

.lead-card .name {
  font-weight: 600;
}

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

.pill.priority-urgent {
  background: #ffe2e5;
  color: #9b1232;
}

.pill.priority-high {
  background: #fff3d7;
  color: #a25500;
}

.pill.priority-normal {
  background: #e4f2ff;
  color: #005a9c;
}

.pill.priority-low {
  background: #e8f9ef;
  color: #0c7d50;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.history-box {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  max-height: 220px;
  overflow: auto;
}

.history-item {
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}

.history-item:last-child {
  border-bottom: 0;
}

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

.table th,
.table td {
  border-bottom: 1px solid var(--line);
  padding: 8px;
  text-align: left;
  font-size: 14px;
}

.dialog-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

#leadDetailContent .actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

#leadDetailContent .actions button.secondary {
  background: #3d566f;
}

@media (max-width: 1100px) {
  .board-wrap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .board-wrap {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}