:root {
  --accent: #82C2BA;
  --accent-dark: #4fa59b;
  --accent-deep: #246b64;
  --accent-soft: #e9f7f5;
  --accent-very-soft: #f4fbfa;
  --bg: #f7faf9;
  --card: #ffffff;
  --text: #1d2d2b;
  --muted: #657875;
  --line: #dfecea;
  --danger: #b94a48;
  --danger-soft: #fff0ef;
  --warning: #8d6a18;
  --warning-soft: #fff7df;
  --shadow: 0 12px 28px rgba(28, 62, 57, 0.06);
  --shadow-soft: 0 8px 18px rgba(28, 62, 57, 0.05);
  --radius: 16px;
  --radius-sm: 10px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

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

button { border: 0; cursor: pointer; }

h1,
h2,
h3,
p { margin-top: 0; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 250px 1fr;
}

.app-shell > * {
  min-width: 0;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px 18px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 46px;
}

.brand-logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
}

.brand strong {
  display: block;
  font-size: 25px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  font-weight: 780;
}

.brand span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

.nav {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.nav-btn {
  width: 100%;
  text-align: left;
  padding: 11px 12px;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  font-weight: 720;
  transition: background 150ms ease, color 150ms ease;
}

.nav-btn:hover,
.nav-btn.active {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.main {
  padding: 28px clamp(18px, 4vw, 46px) 48px;
  min-width: 0;
}

h2 {
  font-size: 20px;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 16px;
  letter-spacing: -0.01em;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.app-actions {
  margin-bottom: 20px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 720;
  background: var(--accent-soft);
  color: var(--accent-deep);
  border: 1px solid #d4ebe8;
}

.pill.muted {
  background: #eef3f2;
  color: var(--muted);
  border-color: var(--line);
}

.pill.warning {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: rgba(141, 106, 24, 0.16);
}

button.primary,
button.secondary,
a.secondary,
button.danger,
button.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 730;
  text-decoration: none;
}

button.primary {
  color: white;
  background: var(--accent);
  box-shadow: 0 10px 22px rgba(77, 148, 141, 0.20);
}

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

button.secondary,
a.secondary {
  color: var(--text);
  background: white;
  border: 1px solid var(--line);
}

button.secondary:hover,
a.secondary:hover {
  background: #f8fbfa;
  border-color: #cfe5e2;
}

button.ghost {
  color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid #d4ebe8;
}

button.ghost:hover {
  background: var(--accent-soft);
}

button.danger {
  color: var(--danger);
  background: var(--danger-soft);
  border: 1px solid rgba(185, 74, 72, 0.14);
}

button:disabled { opacity: 0.55; cursor: not-allowed; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.grid { display: grid; gap: 20px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card,
.block-card,
.dashboard-hero,
.mini-card,
.pairing-panel,
.session-col {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  padding: 20px;
}

.card.compact {
  padding: 18px;
  border-radius: 12px;
  box-shadow: none;
  background: var(--accent-very-soft);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.card-header p,
.helper {
  color: var(--muted);
  margin-bottom: 0;
}

.dashboard {
  display: grid;
  gap: 20px;
}

.dashboard-hero {
  padding: 22px;
  display: grid;
  gap: 18px;
  overflow: hidden;
}

.hero-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.hero-title h2 {
  margin-bottom: 5px;
  font-size: 22px;
  font-weight: 720;
}

.hero-title p {
  color: var(--muted);
  margin: 0;
  overflow-wrap: anywhere;
}

.hero-status {
  min-width: 220px;
  padding: 12px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--line);
}

.status-line {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 0;
  color: var(--muted);
  border-bottom: 1px solid #edf3f2;
}

.status-line:last-child { border-bottom: 0; }
.status-line strong { color: var(--text); }

.kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr 1fr;
  gap: 16px;
}

.kpi {
  display: grid;
  gap: 7px;
  min-height: 112px;
}

.kpi.featured {
  background: linear-gradient(135deg, var(--accent-soft), #ffffff);
}

.kpi strong {
  font-size: 31px;
  letter-spacing: -0.035em;
  line-height: 1;
}

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

.kpi .helper {
  font-size: 13px;
}

.dashboard-body {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 20px;
}

.pairing-panel {
  padding: 20px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.panel-head h2 {
  margin-bottom: 4px;
  font-weight: 720;
}

.panel-head p {
  margin: 0;
  color: var(--muted);
}

.session-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.session-col {
  padding: 14px;
  box-shadow: none;
  border-radius: 12px;
}

.session-col h3 {
  margin: 0 0 2px;
  color: var(--accent-deep);
  font-size: 15px;
}

.session-col .session-sub {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 12px;
}

.group-pill {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-size: 13px;
  margin-bottom: 8px;
}

.group-pill.trio {
  background: var(--accent-soft);
  border-color: #d4ebe8;
}

.side-stack {
  display: grid;
  gap: 20px;
}

.mini-card {
  padding: 18px;
}

.mini-card h3 {
  margin-bottom: 12px;
}

.simple-list {
  display: grid;
  gap: 10px;
}

.simple-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid #edf3f2;
}

.simple-row:last-child { border-bottom: 0; }
.simple-row span { color: var(--muted); }
.simple-row strong { color: var(--text); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
}

.form-grid.sessions { grid-template-columns: 190px 1fr auto; }

.field { display: grid; gap: 6px; }

label {
  font-size: 12px;
  font-weight: 730;
  color: #4a5b59;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 11px;
  background: white;
  color: var(--text);
  outline: none;
  min-height: 40px;
}

textarea { resize: vertical; }

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(130, 193, 186, 0.22);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
  background: white;
}

th,
td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: #fbfdfd;
}

tr:last-child td { border-bottom: 0; }

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

.icon-btn {
  width: 36px;
  min-width: 36px;
  min-height: 36px;
  padding: 0;
}

.icon-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

.participant-toolbar {
  max-width: 260px;
  margin-bottom: 14px;
}

.participants-table td {
  padding: 7px 10px;
}

.participants-table input,
.participants-table select {
  min-height: 34px;
  padding: 7px 9px;
}

.status {
  display: inline-flex;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 730;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.status.stopped {
  background: #eeeeee;
  color: #707070;
}

.blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 16px;
}

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

.block-card h3 { margin-bottom: 8px; }

.date-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin: 10px 0 16px;
}

.date-chip {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 13px;
  color: var(--muted);
  background: #fbfdfd;
}

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

.group-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid #d4ebe8;
}

.group-item strong { color: var(--accent-deep); }

.warning-box {
  border: 1px solid rgba(141, 106, 24, 0.2);
  background: var(--warning-soft);
  color: var(--warning);
  border-radius: 12px;
  padding: 12px;
  font-size: 14px;
  margin-top: 12px;
}

.message {
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 730;
  border: 1px solid #d4ebe8;
}

.message.error {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: rgba(185, 74, 72, 0.14);
}

.empty-state {
  display: grid;
  place-items: center;
  text-align: center;
  padding: 34px 20px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.75);
}

.empty-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  margin-bottom: 12px;
  font-weight: 900;
}

.check-list { display: grid; gap: 10px; }

.check-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
}

.check-row input {
  width: 22px;
  height: 22px;
  accent-color: var(--accent-dark);
}

.tracking-toolbar {
  max-width: 280px;
  margin-bottom: 18px;
}

.tracking-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.tracking-stat {
  display: grid;
  gap: 5px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--accent-very-soft);
}

.tracking-stat span,
.tracking-table th small {
  color: var(--muted);
  font-size: 12px;
}

.tracking-stat strong {
  font-size: 27px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.tracking-stat small {
  color: var(--accent-deep);
  font-weight: 720;
}

.tracking-table-wrap {
  max-height: 70vh;
}

.tracking-table {
  min-width: 980px;
}

.tracking-table th {
  position: sticky;
  top: 0;
  z-index: 2;
}

.tracking-table .participant-heading {
  position: sticky;
  left: 0;
  z-index: 3;
  min-width: 180px;
  background: #fbfdfd;
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
  color: var(--text);
}

.tracking-date {
  display: block;
  color: var(--text);
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0;
}

.absence-cell {
  min-width: 122px;
}

.absence-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0;
  color: var(--text);
}

.absence-check input {
  width: 20px;
  height: 20px;
  min-height: 20px;
  padding: 0;
  accent-color: var(--accent-dark);
}

.absence-reason {
  min-height: 38px;
  margin-top: 8px;
  padding: 8px 10px;
  border-radius: 12px;
}

.absence-reason:disabled {
  display: none;
}

.footer-note {
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

.section-label {
  margin: 18px 0 8px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.session-adjustments {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.session-adjustment {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfdfd;
  padding: 12px;
}

.session-adjustment summary {
  cursor: pointer;
  font-weight: 730;
  color: var(--text);
}

.compact-list { margin-top: 12px; }

.group-item.temporary {
  background: var(--warning-soft);
  border-color: rgba(141, 106, 24, 0.18);
}

.group-item.temporary strong { color: var(--warning); }

code {
  display: inline-block;
  background: #eef3f2;
  color: #3c5653;
  padding: 4px 8px;
  border-radius: 8px;
}

@media (max-width: 1160px) {
  .kpi-grid,
  .dashboard-body,
  .session-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 920px) {
  .app-shell { grid-template-columns: 1fr; }

  .sidebar {
    position: static;
    height: auto;
    padding: 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .brand { margin-bottom: 14px; }

  .nav {
    display: flex;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .nav-btn {
    width: auto;
    white-space: nowrap;
  }

  .top-actions { justify-content: flex-start; }

  .hero-head {
    flex-direction: column;
  }

  .hero-status {
    min-width: 0;
    width: 100%;
  }

  .grid.two,
  .grid.three,
  .form-grid,
  .form-grid.sessions {
    grid-template-columns: 1fr;
  }

  table { min-width: 700px; }
}