:root {
  --bg: #f4efe7;
  --panel: rgba(255, 252, 247, 0.9);
  --ink: #1f2937;
  --muted: #6b7280;
  --line: rgba(31, 41, 55, 0.12);
  --teal: #0f766e;
  --teal-2: #14b8a6;
  --orange: #f97316;
  --red: #dc2626;
  --shadow: 0 18px 45px rgba(31, 41, 55, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.12), transparent 32%),
    radial-gradient(circle at top right, rgba(249, 115, 22, 0.16), transparent 28%),
    linear-gradient(180deg, #faf7f1 0%, #f1ebe1 100%);
  font: 15px/1.5 "SF Pro Text", "Segoe UI", sans-serif;
}

.app-shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar {
  padding: 28px 22px;
  border-right: 1px solid rgba(31, 41, 55, 0.08);
  background: rgba(255,255,255,0.66);
  backdrop-filter: blur(18px);
}
.brand { display: flex; gap: 14px; align-items: center; margin-bottom: 30px; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--teal), var(--orange)); color: #fff; font-weight: 700;
}
.brand-title { font-size: 18px; font-weight: 700; }
.brand-subtitle { color: var(--muted); font-size: 13px; }
.nav { display: grid; gap: 8px; }
.nav-link {
  text-decoration: none; color: var(--ink); padding: 11px 14px; border-radius: 14px; transition: .18s ease;
}
.nav-link:hover { background: rgba(15, 118, 110, 0.08); color: var(--teal); }
.logout-form { margin-top: 24px; }
.content { padding: 30px 34px 40px; }
.page-header h1 { margin: 0; font-size: 34px; line-height: 1.05; }
.muted { margin: 6px 0 0; color: var(--muted); }
.toolbar { margin-bottom: 18px; }
.metrics-grid, .charts-grid, .tables-grid, .split-layout, .three-grid {
  display: grid; gap: 18px; margin-bottom: 18px;
}
.metrics-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.charts-grid { grid-template-columns: 2fr 1fr 1fr; }
.tables-grid { grid-template-columns: 1fr 1fr; }
.split-layout { grid-template-columns: 360px 1fr; }
.three-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.panel, .metric-card, .login-card {
  background: var(--panel); border: 1px solid rgba(255,255,255,0.65); box-shadow: var(--shadow);
  border-radius: 24px; padding: 22px;
}
.panel.large { min-height: 340px; }
.panel.wide { grid-column: span 2; }
.panel.narrow { max-width: 600px; }
.panel-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 14px; }
.panel-head h2 { margin: 0; font-size: 18px; }
.metric-card { min-height: 140px; display: flex; flex-direction: column; justify-content: space-between; }
.metric-card span { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: 12px; }
.metric-card strong { font-size: 34px; }
.metric-card small { color: var(--muted); font-size: 14px; }
.accent-a { background: linear-gradient(145deg, rgba(13,148,136,.12), rgba(255,255,255,.92)); }
.accent-b { background: linear-gradient(145deg, rgba(249,115,22,.12), rgba(255,255,255,.92)); }
.accent-c { background: linear-gradient(145deg, rgba(15,118,110,.12), rgba(255,255,255,.92)); }
.accent-d { background: linear-gradient(145deg, rgba(30,41,59,.08), rgba(255,255,255,.92)); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: 11px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table th { text-align: left; color: var(--muted); font-weight: 600; }
.stack { display: grid; gap: 14px; }
.inline-form { display: flex; align-items: end; gap: 12px; flex-wrap: wrap; }
label { display: grid; gap: 6px; }
label span { color: var(--muted); font-size: 13px; }
input, select, textarea, button {
  font: inherit;
}
input, select, textarea {
  width: 100%;
  border: 1px solid rgba(31,41,55,.16);
  background: rgba(255,255,255,.84);
  border-radius: 14px;
  padding: 11px 12px;
  color: var(--ink);
}
textarea { min-height: 92px; resize: vertical; }
.button {
  border: 0; border-radius: 14px; padding: 11px 16px; cursor: pointer; font-weight: 600;
}
.button.primary { background: linear-gradient(135deg, var(--teal), var(--teal-2)); color: #fff; }
.button.secondary { background: rgba(15,118,110,.1); color: var(--teal); }
.button.danger { background: rgba(220,38,38,.12); color: var(--red); }
.button.wide { width: 100%; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.flash { padding: 14px 16px; border-radius: 16px; margin-bottom: 18px; }
.flash-success { background: rgba(20,184,166,.14); color: var(--teal); }
.flash-error { background: rgba(220,38,38,.12); color: var(--red); }
.flash-warning { background: rgba(249,115,22,.14); color: #c2410c; }
.flash-info { background: rgba(51,65,85,.12); color: #334155; }
.checkbox { grid-template-columns: auto 1fr; align-items: center; gap: 10px; }
.checkbox input { width: auto; }
canvas { width: 100% !important; height: 260px !important; }

.login-body {
  min-height: 100vh; display: grid; place-items: center;
  background:
    radial-gradient(circle at top left, rgba(20,184,166,.18), transparent 32%),
    radial-gradient(circle at bottom right, rgba(249,115,22,.16), transparent 28%),
    linear-gradient(180deg, #faf6ee 0%, #efe6d8 100%);
}
.login-card { width: min(420px, calc(100vw - 32px)); }
.login-brand { color: var(--teal); font-weight: 700; text-transform: uppercase; letter-spacing: .12em; font-size: 12px; }
.login-card h1 { margin: 8px 0 20px; font-size: 30px; line-height: 1.05; }

@media (max-width: 1180px) {
  .metrics-grid, .charts-grid, .tables-grid, .split-layout, .three-grid { grid-template-columns: 1fr; }
  .panel.wide { grid-column: span 1; }
}

@media (max-width: 920px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid rgba(31, 41, 55, 0.08); }
  .content { padding: 22px 18px 32px; }
  .page-header h1 { font-size: 28px; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .metrics-grid { grid-template-columns: 1fr; }
  .panel, .metric-card, .login-card { padding: 18px; border-radius: 20px; }
}