:root {
  --bg: #f5efe4;
  --panel: rgba(255, 250, 241, 0.88);
  --panel-strong: #fffdf8;
  --line: rgba(70, 54, 31, 0.12);
  --line-strong: rgba(70, 54, 31, 0.2);
  --text: #2f2418;
  --muted: #6c5a45;
  --accent: #b85c38;
  --accent-dark: #8d4021;
  --green: #2f7d4c;
  --red: #b24040;
  --shadow: 0 18px 50px rgba(81, 55, 22, 0.12);
  --radius-xl: 28px;
  --font-head: Georgia, "Times New Roman", serif;
  --font-body: "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(184, 92, 56, 0.22), transparent 32%),
    radial-gradient(circle at bottom right, rgba(47, 125, 76, 0.18), transparent 28%),
    linear-gradient(160deg, #f1e7d5 0%, #f8f5ee 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, .button-secondary {
  border: none; border-radius: 999px; padding: 0.9rem 1.3rem; background: var(--accent); color: #fff; cursor: pointer;
}
.button-secondary, .ghost-button { background: transparent; color: var(--text); border: 1px solid var(--line-strong); }
.ghost-button.danger { color: var(--red); }
input, select, textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 14px; padding: 0.9rem 1rem; background: rgba(255,255,255,0.7); color: var(--text);
}
textarea { resize: vertical; }
label { display: block; margin-bottom: 0.45rem; font-weight: 600; }
.shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar {
  padding: 2rem 1.3rem; border-right: 1px solid var(--line); background: rgba(255,250,241,0.74); backdrop-filter: blur(18px);
  display: flex; flex-direction: column; gap: 1.6rem;
}
.brand { display: flex; align-items: center; gap: 0.85rem; }
.brand-mark {
  width: 48px; height: 48px; display: grid; place-items: center; border-radius: 16px; background: linear-gradient(135deg, var(--accent), #d3904b); color: #fff; font-weight: 700;
}
.brand small, .nav a, small { color: var(--muted); }
.nav { display: grid; gap: 0.5rem; }
.nav a { padding: 0.9rem 1rem; border-radius: 14px; }
.nav a.active, .nav a:hover { background: rgba(184,92,56,0.12); color: var(--accent-dark); }
.content { padding: 2rem; }
.content-auth { display: grid; place-items: center; }
.flash { margin-bottom: 1rem; padding: 1rem 1.2rem; border-radius: 16px; border: 1px solid var(--line); }
.flash-success { background: rgba(47,125,76,0.12); }
.flash-error { background: rgba(178,64,64,0.12); }
.hero-card, .card, .auth-card {
  background: var(--panel); border: 1px solid rgba(255,255,255,0.45); box-shadow: var(--shadow); border-radius: var(--radius-xl); backdrop-filter: blur(18px);
}
.hero-card, .auth-card, .card { padding: 1.5rem; }
.hero-card { display: flex; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.5rem; }
.hero-card h1, .page-head h1, .auth-copy h1 {
  margin: 0.25rem 0 0.7rem; font-size: clamp(2rem, 3vw, 3rem); line-height: 1; font-family: var(--font-head);
}
.hero-side, .highlight-card {
  min-width: 240px; padding: 1.5rem; border-radius: 22px; background: linear-gradient(160deg, rgba(184,92,56,0.12), rgba(255,255,255,0.55));
  display: flex; flex-direction: column; justify-content: center; gap: 0.35rem;
}
.eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.73rem; font-weight: 700; color: var(--accent-dark); }
.grid-two { display: grid; grid-template-columns: 1.2fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
.card-header, .page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.page-head { margin-bottom: 1.5rem; }
.card-header h2 { margin: 0.2rem 0 0; font-family: var(--font-head); font-size: 1.5rem; }
.stack-form, .editor-list, .history-table, .person-list, .balance-list, .history-list { display: grid; gap: 1rem; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.person-row, .balance-row, .editor-row {
  display: grid; gap: 1rem; align-items: center; padding: 1rem; border: 1px solid var(--line); border-radius: 18px; background: var(--panel-strong);
}
.person-row { grid-template-columns: 1fr 230px; }
.balance-row { grid-template-columns: 1fr auto; }
.balance-row.negative span { color: var(--red); font-weight: 700; }
.balance-row.positive span { color: var(--green); font-weight: 700; }
.editor-row, .service-row { grid-template-columns: 1fr 140px 120px auto; }
.toggle { display: inline-flex; gap: 0.55rem; align-items: center; justify-content: center; margin: 0; }
.toggle input { width: auto; }
.history-card { padding: 1.2rem; border-radius: 20px; border: 1px solid var(--line); background: var(--panel-strong); }
.history-head { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; }
.history-card ul { margin: 1rem 0; padding-left: 1.1rem; color: var(--muted); }
.notes { margin-top: 0; color: var(--muted); }
.empty-state { padding: 1.2rem; border: 1px dashed var(--line-strong); border-radius: 18px; background: rgba(255,255,255,0.35); }
.inline-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1rem; }
.auth-card { width: min(960px, calc(100vw - 2rem)); display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 2rem; }
.auth-form { padding: 1.5rem; border-radius: 22px; background: rgba(255,255,255,0.64); display: grid; gap: 1rem; align-content: center; }
@media (max-width: 920px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--line); }
  .grid-two, .auth-card, .hero-card, .form-grid, .person-row, .editor-row, .service-row { grid-template-columns: 1fr; }
  .content { padding: 1rem; }
}