:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #fafbfc;
  --border: #e3e8ef;
  --border-strong: #cbd5e1;
  --text: #1f2937;
  --text-muted: #6b7280;
  --text-faint: #9ca3af;
  --primary: #2bb673;
  --primary-hover: #239a61;
  --primary-soft: rgba(43, 182, 115, 0.10);
  --accent: #ffc629;
  --danger: #dc2626;
  --warn: #d97706;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.16);
  --radius: 12px;
  --radius-sm: 8px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; height: 100%; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }

button { font: inherit; }

/* =========================================================
   LOGIN
   ========================================================= */
.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  justify-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 10%, rgba(43, 182, 115, 0.08), transparent 50%),
    radial-gradient(circle at 90% 90%, rgba(255, 198, 41, 0.10), transparent 45%),
    var(--bg);
}
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 40px 32px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand--login { margin-bottom: 28px; justify-content: center; }
.brand-logo { height: 36px; width: auto; display: block; }
.brand--login .brand-logo { height: 44px; }
h1.title {
  font-size: 22px; font-weight: 600;
  letter-spacing: -0.02em; margin: 0 0 6px;
}
p.subtitle { color: var(--text-muted); margin: 0 0 24px; font-size: 14px; }
form .field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
label { font-size: 13px; font-weight: 500; color: var(--text); }
.foot { margin-top: 22px; font-size: 12px; color: var(--text-muted); text-align: center; }

.alert {
  padding: 10px 12px; border-radius: 8px;
  font-size: 13px; margin-bottom: 16px; display: none;
}
.alert.error {
  background: #fef2f2; color: var(--danger); border: 1px solid #fecaca;
}
.alert.show { display: block; }

/* =========================================================
   INPUTS, BUTTONS (compartilhados)
   ========================================================= */
.input,
input[type='text'],
input[type='password'],
input[type='email'],
input[type='search'],
input[type='date'],
input[type='time'],
input[type='number'],
input[type='tel'],
input[type='url'],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font: inherit;
  font-family: inherit;
  color: var(--text);
  transition: border-color 120ms ease, box-shadow 120ms ease;
  -webkit-appearance: none;
  appearance: none;
  line-height: 1.4;
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}
input[type='date'],
input[type='time'] {
  /* Mantem o picker nativo mas com aparencia consistente */
  -webkit-appearance: none;
}
input[type='date']::-webkit-calendar-picker-indicator,
input[type='time']::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.6;
  filter: grayscale(1);
}
input[type='date']::-webkit-calendar-picker-indicator:hover,
input[type='time']::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  transition: background 120ms, border-color 120ms, transform 60ms;
  text-decoration: none;
  font-size: 14px;
}
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: var(--primary); color: #fff; border-color: var(--primary);
}
.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn.primary:disabled { background: #a7d3bf; border-color: #a7d3bf; cursor: not-allowed; }
.btn.ghost { border-color: var(--border); color: var(--text); }
.btn.ghost:hover { background: var(--bg); }
.btn.block { width: 100%; }

/* legado escopado SO no login */
.login-page button.primary {
  width: 100%;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
  transition: background 120ms ease, transform 60ms ease;
}
.login-page button.primary:hover { background: var(--primary-hover); }
.login-page button.primary:disabled { background: #a7d3bf; cursor: not-allowed; }

/* =========================================================
   APP SHELL (sidebar + main)
   ========================================================= */
.shell-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar-brand { padding: 4px 10px 24px; }
.sidebar-brand .brand-logo { height: 32px; }

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: background 120ms, color 120ms;
}
.sidebar-nav a:hover { background: var(--bg); color: var(--text); }
.sidebar-nav a.active {
  background: var(--primary-soft);
  color: var(--primary);
}
.nav-ico {
  width: 22px; height: 22px;
  border-radius: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  display: grid; place-items: center;
  font-weight: 700; font-size: 11px;
}
.sidebar-nav a.active .nav-ico { background: var(--primary); color: #fff; }

.nav-group { margin-top: 2px; }
.nav-group > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.nav-group > summary::-webkit-details-marker { display: none; }
.nav-group > summary:hover { background: var(--bg); color: var(--text); }
.nav-arrow {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-faint);
  transition: transform 120ms ease;
}
.nav-group[open] > summary .nav-arrow { transform: rotate(180deg); }
.nav-sub {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px 0 6px 30px;
}
.nav-sub a {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}
.nav-sub a:hover { background: var(--bg); color: var(--text); }
.nav-sub a.active { background: var(--primary-soft); color: var(--primary); }

.ta-right { text-align: right; }
.row-actions { white-space: nowrap; display: flex; gap: 6px; justify-content: flex-end; }
.btn.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}
.btn.btn-sm.danger { color: var(--danger); border-color: var(--border); }
.btn.btn-sm.danger:hover { background: #fef2f2; border-color: #fecaca; }

textarea {
  resize: vertical;
  min-height: 60px;
  font-family: inherit;
}

.sidebar-foot {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.user-block {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 8px;
}
.user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 600; font-size: 13px;
}
.user-meta { line-height: 1.2; }
.user-nome { font-weight: 600; font-size: 13px; }
.user-role { color: var(--text-muted); font-size: 11px; }

.main {
  padding: 28px 32px 64px;
  max-width: 1280px;
  width: 100%;
}

.loading { padding: 24px; color: var(--text-muted); }

/* =========================================================
   PAGE HEADER
   ========================================================= */
.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.page-header h1 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}
.page-sub {
  color: var(--text-muted);
  font-size: 13px;
  margin: 4px 0 0;
}
.page-actions { display: flex; gap: 8px; }
.back-link {
  display: inline-block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.back-link:hover { color: var(--text); }

/* =========================================================
   CARD
   ========================================================= */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: 16px; }
.card-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 14px;
  color: var(--text);
}
.card-disabled { opacity: 0.6; }

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}
@media (max-width: 1024px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.stack > .card + .card { margin-top: 0; }

.card-head-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.card-title.nomargin { margin: 0; }
.muted.small { font-size: 12px; }

/* =========================================================
   FILTERS
   ========================================================= */
.filters {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.filters.filters-3 { grid-template-columns: 1fr 1fr 1fr; }
.filters.filters-4 { grid-template-columns: 1fr 1fr 1fr 1.5fr; }
.filters.filters-aluno-aulas {
  grid-template-columns: 1fr 1fr 1.5fr 1.5fr auto;
  align-items: center;
}
.filters-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 14px;
}
@media (max-width: 768px) {
  .filters,
  .filters.filters-3,
  .filters.filters-4 { grid-template-columns: 1fr; }
}

.pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  font-size: 13px;
}
.pager-actions { display: flex; gap: 8px; }

/* =========================================================
   TABLE
   ========================================================= */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.table thead th {
  background: var(--surface-2);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: none; }
.table.table-hover tbody tr.clickable { cursor: pointer; }
.table.table-hover tbody tr.clickable:hover { background: var(--surface-2); }
.table.compact thead th { padding: 8px 12px; }
.table.compact tbody td { padding: 8px 12px; }

.table-foot {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

.empty {
  padding: 28px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}
.empty.small { padding: 16px; font-size: 13px; }

.muted { color: var(--text-muted); font-weight: 400; }

/* =========================================================
   BADGES
   ========================================================= */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge-ok      { background: #dcfce7; color: #15803d; border-color: #bbf7d0; }
.badge-danger  { background: #fee2e2; color: #b91c1c; border-color: #fecaca; }
.badge-warn    { background: #fef3c7; color: #b45309; border-color: #fde68a; }
.badge-neutral { background: #f3f4f6; color: #4b5563; border-color: #e5e7eb; }

/* =========================================================
   FORM (detalhe)
   ========================================================= */
.form .form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 14px;
}
.form .form-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.form .field {
  display: flex; flex-direction: column;
  gap: 6px; margin: 0;
}
.form .field.span-2 { grid-column: span 2; }
.form .field.span-3 { grid-column: span 3; }
@media (max-width: 768px) {
  .form .form-grid,
  .form .form-grid-3 { grid-template-columns: 1fr; }
  .form .field.span-2,
  .form .field.span-3 { grid-column: span 1; }
}
.form .req { color: var(--danger); margin-left: 2px; }
.form-actions {
  display: flex; gap: 8px;
  margin-top: 18px;
}

/* =========================================================
   TABS no card
   ========================================================= */
.card-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin: -20px -22px 16px;
  padding: 0 22px;
}
.tab {
  background: none; border: none;
  padding: 14px 14px 12px;
  font-weight: 500; font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* =========================================================
   MODAL
   ========================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: grid;
  place-items: center;
  z-index: 100;
  padding: 24px;
  animation: fadeIn 120ms ease;
}
.modal-card {
  background: var(--surface);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  max-height: calc(100vh - 64px);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
  animation: popIn 160ms ease;
  display: flex; flex-direction: column;
}
.modal-card.modal-lg { max-width: 820px; }
.modal-close {
  position: absolute;
  top: 12px; right: 14px;
  width: 32px; height: 32px;
  border: none;
  background: transparent;
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 6px;
  z-index: 1;
}
.modal-close:hover { background: var(--bg); color: var(--text); }
.modal-head {
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.modal-head h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.modal-meta { display: flex; gap: 6px; align-items: center; padding-right: 32px; flex-wrap: wrap; }

.add-row {
  display: grid;
  gap: 8px;
  align-items: center;
  margin-top: 10px;
  padding: 10px;
  background: var(--surface-2);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}
.add-row.add-row-2 { grid-template-columns: 1fr auto; }
.add-row.add-row-3 { grid-template-columns: minmax(0,1fr) 140px auto; }
.add-row.add-row-dia { grid-template-columns: 160px 120px auto; }
.add-row .input { min-width: 0; }
.add-row .btn { white-space: nowrap; }
@media (max-width: 600px) {
  .add-row.add-row-3,
  .add-row.add-row-dia { grid-template-columns: 1fr; }
}

.input-sm { padding: 6px 8px; font-size: 13px; }
.field-inline label { display: flex; align-items: center; gap: 6px; cursor: pointer; }

.icon-btn {
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  transition: all 120ms;
}
.icon-btn:hover { background: var(--bg); color: var(--text); }
.icon-btn.danger:hover {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--danger);
}
.icon-btn svg { display: block; }

.modal-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin: -4px -22px 18px;
  padding: 0 22px;
}
.modal-tabs .tab {
  background: none;
  border: none;
  padding: 12px 14px 10px;
  font: inherit;
  font-weight: 500;
  font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.modal-tabs .tab:hover { color: var(--text); }
.modal-tabs .tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.modal-tab-pane[hidden] { display: none; }

.row-input-cell { padding: 4px 10px; }
.input-saving {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px var(--primary-soft) !important;
}

.combobox { position: relative; min-width: 0; }
.combobox-input { width: 100%; padding-right: 32px; }
.combobox::after {
  content: '';
  position: absolute;
  top: 50%; right: 12px;
  width: 8px; height: 8px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
.combobox-list {
  position: absolute;
  top: calc(100% + 2px);
  left: 0; right: 0;
  z-index: 30;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  max-height: 260px;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}
.combobox-list[hidden] { display: none; }
.combobox-list button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border: none;
  background: none;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.combobox-list button:hover,
.combobox-list button.active {
  background: var(--primary-soft);
  color: var(--primary);
}
.combobox-empty {
  padding: 12px;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}
.modal-body {
  padding: 18px 22px 22px;
  overflow-y: auto;
}

.kv {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  background: var(--surface-2);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
@media (max-width: 600px) { .kv { grid-template-columns: 1fr; } }
.kv > div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.kv-k { font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); font-weight: 600; }
.kv-v { font-size: 14px; color: var(--text); overflow: hidden; text-overflow: ellipsis; }

.section-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin: 22px 0 10px;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn {
  from { opacity: 0; transform: translateY(6px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

/* =========================================================
   TOAST
   ========================================================= */
#toast-root {
  position: fixed;
  bottom: 24px; right: 24px;
  display: flex; flex-direction: column-reverse;
  gap: 8px;
  z-index: 200;
  pointer-events: none;
}
.toast {
  background: var(--text);
  color: #fff;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 160ms, transform 160ms;
  max-width: 320px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-ok    { background: #15803d; }
.toast-error { background: #b91c1c; }