:root {
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --secondary: #e5e7eb;
  --warning: #f59e0b;
  --danger: #dc2626;
  --success: #16a34a;
  --sidebar: #0f172a;
  --sidebar-link: #cbd5e1;
  --sidebar-active: #ffffff;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, Arial, Helvetica, sans-serif; color: var(--text); background: var(--bg); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout-app { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.layout-auth { min-height: 100vh; display: grid; place-items: center; padding: 32px; }

.sidebar {
  background: linear-gradient(180deg, #0f172a 0%, #111827 100%);
  color: white;
  display: flex;
  flex-direction: column;
  padding: 24px 18px;
  gap: 24px;
}
.sidebar-title { font-size: 22px; font-weight: 700; }
.sidebar-subtitle { color: #94a3b8; font-size: 13px; margin-top: 4px; }
.sidebar-nav { display: flex; flex-direction: column; gap: 6px; }
.sidebar-nav a {
  color: var(--sidebar-link);
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 600;
}
.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: rgba(255,255,255,0.08);
  color: var(--sidebar-active);
  text-decoration: none;
}
.sidebar-footer { margin-top: auto; display: grid; gap: 12px; color: #e5e7eb; }

.main { padding: 28px; display: grid; gap: 20px; align-content: start; }
.main-auth { width: min(520px, 100%); }

.auth-card {
  background: var(--card);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}
.auth-card-header h1 { margin: 0 0 8px; }
.auth-card-header p { margin: 0 0 18px; color: var(--muted); }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
}
.page-header h1 { margin: 0 0 6px; font-size: 28px; }
.page-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.card {
  background: var(--card);
  border-radius: 18px;
  padding: 20px;
  border: 1px solid rgba(17,24,39,0.04);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.card-header h2, .card-header h3 { margin: 0; font-size: 18px; }

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.stat-card {
  background: var(--card);
  padding: 20px;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}
.stat-label { color: var(--muted); font-size: 14px; }
.stat-value { font-size: 36px; font-weight: 700; margin-top: 10px; }
.stat-meta { color: var(--muted); margin-top: 8px; font-size: 13px; }

form.stack { display: grid; gap: 16px; }
form.stack.compact { gap: 12px; }
.form-row.single { display: grid; gap: 8px; }

label { display: grid; gap: 8px; font-weight: 600; font-size: 14px; }
label span { color: var(--muted); font-weight: 600; font-size: 13px; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
  background: white;
  color: var(--text);
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(15, 118, 110, 0.16);
  border-color: var(--primary);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 12px;
  background: var(--primary);
  color: white;
  font-weight: 700;
  padding: 10px 14px;
  cursor: pointer;
  text-decoration: none;
}
.button:hover { background: var(--primary-dark); text-decoration: none; }
.button-secondary {
  background: white;
  color: var(--text);
  border: 1px solid var(--line);
}
.button-secondary:hover { background: #f8fafc; }
.button-small { padding: 8px 10px; font-size: 13px; border-radius: 10px; }
.button-full { width: 100%; }

.button-group { display: flex; gap: 8px; flex-wrap: wrap; }

.muted { color: var(--muted); }
.text-right { text-align: right; }
.strong { font-weight: 700; }
.mt-16 { margin-top: 16px; }
.tiny { gap: 4px !important; }

.flash {
  border-radius: 14px;
  padding: 14px 16px;
  font-weight: 600;
}
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }
.flash-warning { background: #fef3c7; color: #92400e; }

.table-wrapper { overflow-x: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
}
.table th,
.table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  font-size: 14px;
}
.table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.compact-table td { padding: 8px; }

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 10px;
  background: #eef2ff;
  color: #4338ca;
  font-size: 12px;
  font-weight: 700;
  text-transform: lowercase;
}
.badge-info { background: #e0f2fe; color: #075985; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-critical { background: #fee2e2; color: #991b1b; }

.definition-list {
  margin: 0;
  display: grid;
  gap: 12px;
}
.definition-list div {
  display: grid;
  gap: 4px;
}
.definition-list dt {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.definition-list dd {
  margin: 0;
  font-weight: 600;
}

.list-stack { display: grid; gap: 12px; }
.list-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid var(--line);
}
.list-item.plain { background: white; }

.simple-list { margin: 0; padding-left: 18px; display: grid; gap: 8px; }

.checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
}
.checkbox input { width: auto; margin: 0; }
.checkbox span { color: var(--text); }

.inline-form { display: flex; gap: 12px; }
.inline-form input { flex: 1; }

.timeline { display: grid; gap: 12px; }
.timeline-item {
  border-left: 3px solid #d1d5db;
  padding-left: 12px;
}
.timeline-title { font-weight: 700; }

.totals-box {
  margin-top: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: grid;
  gap: 10px;
}
.totals-box div { display: flex; justify-content: space-between; }
.totals-inline {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.item-edit-grid,
.item-create-grid {
  display: grid;
  grid-template-columns: 1.6fr .8fr .7fr .7fr .8fr .9fr .7fr 1.2fr .7fr .9fr;
  gap: 8px;
  align-items: center;
}
.item-edit-grid.order-grid {
  grid-template-columns: 1.5fr .8fr .7fr .7fr .8fr .9fr .7fr 1.2fr .9fr .9fr;
}
.item-create-grid {
  grid-template-columns: 1.6fr .8fr .7fr .7fr .8fr .9fr .7fr .9fr .9fr .8fr 1.4fr auto;
}
.item-edit-grid textarea,
.item-create-grid textarea { min-height: 42px; }
.inline-date-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.row-warning { background: #fffbeb; }

.accordion {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: white;
}
.accordion summary {
  list-style: none;
  cursor: pointer;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion-body { padding: 0 16px 16px; }

.day-item-grid {
  display: grid;
  grid-template-columns: 1.6fr .6fr .7fr 1.4fr auto;
  gap: 8px;
  align-items: center;
}

details summary { cursor: pointer; }

@media (max-width: 1200px) {
  .grid-3, .stats-grid, .grid-2 { grid-template-columns: 1fr; }
  .item-edit-grid,
  .item-edit-grid.order-grid,
  .item-create-grid,
  .day-item-grid {
    grid-template-columns: 1fr;
  }
  .layout-app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: sticky;
    top: 0;
    z-index: 20;
  }
}