:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #dfe3e8;
  --text: #1c2126;
  --text-muted: #626b76;
  --accent: #2554c7;
  --accent-contrast: #ffffff;
  --success: #157347;
  --success-bg: #e7f6ec;
  --danger: #b3261e;
  --danger-bg: #fdecea;
  --warning: #8a5a00;
  --warning-bg: #fff4e0;
  --info: #2554c7;
  --info-bg: #eaf0ff;
  --neutral: #626b76;
  --neutral-bg: #eef0f2;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 24, 28, 0.06), 0 1px 8px rgba(20, 24, 28, 0.05);
  --nav-width: 210px;
  --topbar-height: 56px;
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
h1,
h2,
h3 {
  line-height: 1.25;
  margin: 0 0 0.5em;
}
a {
  color: var(--accent);
}
code {
  background: var(--neutral-bg);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.92em;
}

.app {
  min-height: 100%;
  display: grid;
  grid-template-columns: var(--nav-width) 1fr;
  grid-template-rows: var(--topbar-height) 1fr;
  grid-template-areas: "top top" "nav main";
}

.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  font-weight: 700;
  letter-spacing: -0.01em;
}
.topbar-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-toggle {
  display: none;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  width: 34px;
  height: 34px;
  font-size: 16px;
  cursor: pointer;
  color: var(--text);
}
.icon-btn:hover {
  background: var(--neutral-bg);
}

.conn-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.conn-unknown {
  background: var(--neutral);
}
.conn-ok {
  background: var(--success);
}
.conn-bad {
  background: var(--danger);
}

.side-nav {
  grid-area: nav;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: var(--topbar-height);
  align-self: start;
  height: calc(100vh - var(--topbar-height));
  overflow-y: auto;
}
.side-nav a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}
.side-nav a:hover {
  background: var(--neutral-bg);
}
.side-nav a.active {
  background: var(--info-bg);
  color: var(--accent);
}

.view {
  grid-area: main;
  padding: 20px 24px 60px;
  min-width: 0;
}

.view-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.view-header h1 {
  font-size: 1.35rem;
}
.view-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---- generic layout ---- */
.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.stat-strip {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-bottom: 18px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
}
.stat-card:hover {
  border-color: var(--accent);
}
.stat-card .num {
  font-size: 1.7rem;
  font-weight: 700;
  display: block;
}
.stat-card .label {
  color: var(--text-muted);
  font-size: 0.85rem;
}
.stat-card.tone-danger .num {
  color: var(--danger);
}
.stat-card.tone-warning .num {
  color: var(--warning);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.card h2 {
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card h2 .count {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.85rem;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  text-decoration: none;
  color: inherit;
}
.row:hover {
  border-color: var(--accent);
}
.row-main {
  flex: 1;
  min-width: 0;
}
.row-title {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.row-sub {
  color: var(--text-muted);
  font-size: 0.85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--info-bg);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-tenant {
  background: var(--neutral-bg);
  color: var(--text-muted);
}
.tone-info {
  background: var(--info-bg);
  color: var(--info);
}
.tone-success {
  background: var(--success-bg);
  color: var(--success);
}
.tone-danger {
  background: var(--danger-bg);
  color: var(--danger);
}
.tone-warning {
  background: var(--warning-bg);
  color: var(--warning);
}
.tone-neutral {
  background: var(--neutral-bg);
  color: var(--neutral);
}

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover {
  border-color: var(--accent);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}
.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}
.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}
.btn-danger {
  border-color: var(--danger);
  color: var(--danger);
}

/* ---- states ---- */
.state {
  padding: 28px 12px;
  text-align: center;
  color: var(--text-muted);
}
.state-error {
  color: var(--danger);
}
.state .hint {
  color: var(--text-muted);
  font-size: 0.85rem;
}
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
  animation: spin 0.8s linear infinite;
  vertical-align: -2px;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---- forms ---- */
.field-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin: 12px 0;
}
label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}
.optional {
  font-weight: 400;
}
input,
select,
textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}
textarea {
  resize: vertical;
  min-height: 70px;
}

/* ---- search / filter bars ---- */
.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 14px;
}
.toolbar input,
.toolbar select {
  min-width: 160px;
}

/* ---- kanban ---- */
.kanban {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 12px;
}
.kanban-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 260px;
  max-width: 280px;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 220px);
}
.kanban-col-head {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}
.kanban-col-body {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}
.opp-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  text-decoration: none;
  color: inherit;
  display: block;
}
.opp-card:hover {
  border-color: var(--accent);
}
.opp-card .title {
  font-weight: 600;
  margin-bottom: 4px;
}
.opp-card .meta {
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  gap: 6px;
}
.opp-card select {
  margin-top: 8px;
  width: 100%;
  font-size: 0.78rem;
  padding: 5px 6px;
}

/* ---- toast ---- */
.toast-host {
  position: fixed;
  right: 16px;
  bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
}
.toast {
  background: var(--text);
  color: #fff;
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  font-size: 0.85rem;
  max-width: 320px;
}
.toast-danger {
  background: var(--danger);
}
.toast-success {
  background: var(--success);
}

/* ---- modal ---- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 22, 0.45);
  align-items: flex-start;
  justify-content: center;
  padding: 6vh 16px;
  z-index: 200;
  overflow-y: auto;
}
.modal-backdrop:not([hidden]) {
  display: flex;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 22px;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow);
}
.settings-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* ---- pagination / load more ---- */
.load-more {
  display: flex;
  justify-content: center;
  margin-top: 12px;
}

/* ---- responsive ---- */
@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-areas: "top" "main";
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .side-nav {
    position: fixed;
    left: 0;
    top: var(--topbar-height);
    width: min(78vw, 260px);
    height: calc(100vh - var(--topbar-height));
    transform: translateX(-105%);
    transition: transform 0.18s ease;
    z-index: 30;
    box-shadow: var(--shadow);
  }
  .side-nav.open {
    transform: translateX(0);
  }
  .view {
    padding: 16px;
  }
}

@media (max-width: 520px) {
  .row {
    flex-wrap: wrap;
  }
  .stat-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}