:root {
  --bg: #f6f7f6;
  --surface: #ffffff;
  --border: #e2e6e3;
  --text: #1a231f;
  --text-dim: #62706a;
  --accent: #14624a;
  --accent-hover: #0f4d3a;
  --accent-tint: #e2ede7;
  --warn-bg: #f6e8e0;
  --warn-text: #9e3d0e;
  --danger: #b23a2e;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(20, 30, 25, 0.06), 0 1px 8px rgba(20, 30, 25, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121613;
    --surface: #1b211d;
    --border: #2b332e;
    --text: #eef1ee;
    --text-dim: #97a39c;
    --accent: #2f9873;
    --accent-hover: #3aac83;
    --accent-tint: #1c2f26;
    --warn-bg: #3a291d;
    --warn-text: #e0a67e;
    --danger: #e07866;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.4;
}

.hidden { display: none !important; }

/* ---------- Login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-card h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.login-sub {
  margin: 0 0 4px;
  color: var(--text-dim);
  font-size: 13px;
}

.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
}

.login-card input {
  font: inherit;
  font-weight: 400;
  color: var(--text);
  padding: 9px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
}

.login-card input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.login-msg {
  font-size: 13px;
  color: var(--accent);
  text-align: center;
}

/* ---------- Buttons ---------- */
.btn {
  font: inherit;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-block { width: 100%; }

.btn-ghost {
  font: inherit;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.btn-ghost:hover { background: var(--accent-tint); }

.btn-danger {
  font: inherit;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 6px;
  border: 1px solid var(--danger);
  background: transparent;
  color: var(--danger);
  cursor: pointer;
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  text-align: center;
}

/* ---------- App shell ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.brand { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.brand span { color: var(--accent); }

.topbar-right { display: flex; align-items: center; gap: 14px; }
.user-email { color: var(--text-dim); font-size: 13px; }

.painel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  padding: 20px 24px 4px;
}

.painel-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.painel-card-warn .painel-value { color: var(--warn-text); }

.painel-label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.painel-value {
  font-size: 26px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 16px 24px 0;
  border-bottom: 1px solid var(--border);
}

.tab {
  font: inherit;
  font-weight: 600;
  padding: 9px 14px;
  border: none;
  background: none;
  color: var(--text-dim);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

#contacts-view, #cadencia-view { padding: 16px 24px 32px; }

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.search-input, .select {
  font: inherit;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.search-input { min-width: 220px; flex: 1 1 220px; max-width: 360px; }
.toolbar-spacer { flex: 1; }

.check-label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 13px;
}

/* ---------- Table ---------- */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 900px;
}

.data-table thead th {
  text-align: left;
  padding: 10px 12px;
  background: var(--accent-tint);
  color: var(--accent);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  position: sticky;
  top: 0;
}

.data-table thead th:hover { color: var(--accent-hover); }
.data-table thead th.col-actions { cursor: default; }

.data-table tbody td {
  padding: 9px 12px;
  border-top: 1px solid var(--border);
  vertical-align: middle;
  white-space: nowrap;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.data-table tbody tr:hover { background: var(--accent-tint); cursor: pointer; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  background: var(--accent-tint);
  color: var(--accent);
}

.badge-warn { background: var(--warn-bg); color: var(--warn-text); }
.badge-muted { background: var(--border); color: var(--text-dim); }

.row-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
}

.icon-btn {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 13px;
  padding: 4px 6px;
  border-radius: 4px;
}
.icon-btn:hover { background: var(--border); color: var(--text); }

.state-block {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-dim);
}

.state-error { color: var(--danger); }

.row-overdue td:first-child { box-shadow: inset 3px 0 0 var(--warn-text); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 12, 0.45);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  overflow-y: auto;
  z-index: 50;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 640px;
  padding: 24px 28px 20px;
}

.modal h2 { margin: 0 0 16px; font-size: 17px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
}

.form-grid .span-2 { grid-column: 1 / -1; }

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
}

.form-grid input, .form-grid select {
  font: inherit;
  font-weight: 400;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
}

.form-grid input:focus, .form-grid select:focus,
.select:focus, .search-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.form-error {
  margin-top: 12px;
  padding: 9px 12px;
  border-radius: 6px;
  background: var(--warn-bg);
  color: var(--warn-text);
  font-size: 13px;
}

.modal-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}

.modal-actions-spacer { flex: 1; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  z-index: 100;
  box-shadow: var(--shadow);
}

.toast.toast-error { background: var(--danger); color: #fff; }

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  .painel { grid-template-columns: repeat(2, 1fr); }
  .topbar { padding: 12px 16px; }
  #contacts-view, #cadencia-view { padding: 12px 16px 24px; }
}