:root {
  --bg: #f4f8f8;
  --panel: #ffffff;
  --panel-2: #f8fbfb;
  --line: #dbe8e7;
  --text: #173233;
  --muted: #5c7575;
  --brand: #1d8c87;
  --brand-2: #dff4f2;
  --danger: #bb4a4a;
  --warning: #d78816;
  --success: #1b8a57;
  --shadow: 0 20px 50px rgba(28, 72, 72, 0.08);
  --radius: 20px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; border: 0; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  background: linear-gradient(180deg, #11393a 0%, #173d3f 100%);
  color: #eff9f9;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 8px 20px;
}
.brand-badge {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.12);
  font-weight: 800;
}
.brand-title { font-size: 1.05rem; font-weight: 700; }
.brand-subtitle { font-size: 0.88rem; color: rgba(239,249,249,0.72); margin-top: 4px; }

.nav-list { display: grid; gap: 8px; }
.nav-item {
  text-align: left;
  padding: 13px 14px;
  border-radius: 14px;
  background: transparent;
  color: #edf9f9;
  transition: 0.2s ease;
}
.nav-item:hover, .nav-item.active { background: rgba(255,255,255,0.12); }

.sidebar-footer { margin-top: auto; display: grid; gap: 10px; }
.full-width { width: 100%; }
.file-btn { text-align: center; display: inline-flex; justify-content: center; }

.main-panel { padding: 24px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}
.topbar-left { display: flex; gap: 14px; align-items: flex-start; }
.topbar h1 { margin: 0; font-size: 1.8rem; }
.topbar p { margin: 8px 0 0; color: var(--muted); }
.topbar-right { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

.primary-btn, .secondary-btn, .danger-btn, .icon-btn {
  border-radius: 14px;
  padding: 12px 16px;
  font-weight: 600;
}
.primary-btn { background: var(--brand); color: white; }
.secondary-btn { background: var(--panel); color: var(--text); border: 1px solid var(--line); }
.danger-btn { background: rgba(187,74,74,0.12); color: #ffecec; border: 1px solid rgba(255,255,255,0.08); }
.icon-btn { background: var(--panel); color: var(--text); border: 1px solid var(--line); padding: 10px 12px; }
.mobile-only { display: none; }

.mini-chip, .pill {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
}
.pill { padding: 8px 12px; }

.view { display: none; }
.view.active { display: block; }

.stats-grid,
.panel-grid,
.summary-grid { display: grid; gap: 18px; }
.stats-grid { grid-template-columns: repeat(4, minmax(0,1fr)); margin-bottom: 18px; }
.panel-grid.two-col { grid-template-columns: repeat(2, minmax(0,1fr)); margin-bottom: 18px; }
.summary-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }

.stat-card, .panel-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.stat-card { padding: 20px; }
.stat-title { color: var(--muted); font-size: 0.92rem; }
.stat-value { font-size: 1.9rem; font-weight: 800; margin: 8px 0; }
.stat-foot { color: var(--muted); font-size: 0.9rem; }

.panel-card { padding: 20px; }
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.panel-head h3 { margin: 0; font-size: 1.02rem; }

.stack-list { display: grid; gap: 12px; }
.stack-item {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}
.stack-top { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.stack-title { font-weight: 700; }
.stack-sub { color: var(--muted); margin-top: 6px; line-height: 1.45; font-size: 0.94rem; }
.badge {
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge.booked { background: #edf8ff; color: #126ca6; }
.badge.completed { background: #ebfff3; color: #0e8a4e; }
.badge.cancelled { background: #fff0f0; color: #c04b4b; }
.badge.no-show { background: #fff7ea; color: #c07a1f; }
.badge.pending { background: #fff7ea; color: #c07a1f; }
.badge.paid { background: #ebfff3; color: #0e8a4e; }
.badge.partially { background: #edf8ff; color: #126ca6; }

.summary-box {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
}
.summary-box h4 { margin: 0 0 6px; font-size: 0.92rem; color: var(--muted); }
.summary-box strong { font-size: 1.2rem; }

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar-group { display: flex; gap: 10px; flex-wrap: wrap; }
.search-input, .input-like, .form-grid input, .form-grid select, .form-grid textarea {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  color: var(--text);
  padding: 12px 14px;
  width: 100%;
}
.search-input { max-width: 420px; }
.input-like.wide { max-width: 320px; }

.table-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.table-scroll { overflow: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
}
.table th, .table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.table th {
  background: #f7fbfb;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.88rem;
}
.table tr:hover td { background: #fbfefe; }
.table .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.small-btn {
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
}
.small-btn.delete { background: #fff3f3; color: #b14a4a; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0,1fr));
  gap: 14px;
}
.calendar-day {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 14px;
  min-height: 240px;
  box-shadow: var(--shadow);
}
.calendar-day h4 { margin: 0 0 12px; font-size: 0.95rem; }
.calendar-slot { margin-bottom: 10px; }
.calendar-slot:last-child { margin-bottom: 0; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 14px;
}
.form-grid label { display: grid; gap: 8px; }
.form-grid label span { font-size: 0.92rem; color: var(--muted); }
.full-span { grid-column: 1 / -1; }
.form-actions { display: flex; justify-content: flex-end; }
.info-list { display: grid; gap: 12px; }
.info-item {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  color: var(--muted);
  line-height: 1.55;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(13, 31, 31, 0.4);
  z-index: 20;
}
.modal {
  position: fixed;
  inset: 0;
  z-index: 25;
  display: grid;
  place-items: center;
  padding: 22px;
}
.modal.hidden, .modal-backdrop.hidden { display: none; }
.modal-card {
  width: min(760px, 100%);
  background: var(--panel);
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 28px 70px rgba(16, 44, 44, 0.18);
  padding: 22px;
  max-height: 90vh;
  overflow: auto;
}
.modal-card.large { width: min(880px, 100%); }
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.modal-head h3 { margin: 0; }

.empty-state {
  padding: 24px;
  color: var(--muted);
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #173d3f;
  color: white;
  padding: 14px 16px;
  border-radius: 14px;
  z-index: 40;
  box-shadow: var(--shadow);
}

@media (max-width: 1100px) {
  .stats-grid, .panel-grid.two-col, .summary-grid, .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 35;
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-only { display: inline-flex; }
  .main-panel { padding: 18px; }
  .topbar { flex-direction: column; align-items: stretch; }
  .calendar-grid { grid-template-columns: 1fr; }
}