:root {
  --fg: #1a1a1a;
  --muted: #666;
  --line: #e2e2e2;
  --bg: #fafafa;
  --card: #fff;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --ok: #166534;
  --ok-bg: #dcfce7;
  --warn: #854d0e;
  --warn-bg: #fef3c7;
  --err: #991b1b;
  --err-bg: #fee2e2;
  --neutral-bg: #f1f5f9;
  --neutral-fg: #475569;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.45;
  font-size: 15px;
}

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: .8rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
  font-size: 1.1rem;
}
.topbar nav {
  display: flex;
  gap: 1.2rem;
  flex: 1;
}
.topbar nav a {
  color: var(--fg);
  text-decoration: none;
  font-size: .95rem;
}
.topbar nav a:hover { color: var(--accent); }
.topbar nav a.primary { color: var(--accent); font-weight: 600; }

.container { max-width: 1080px; margin: 1.5rem auto; padding: 0 1.5rem; }
.pagefoot {
  text-align: center;
  color: var(--muted);
  font-size: .8rem;
  padding: 2rem 1rem 3rem;
}

h1 { margin: 0 0 1rem; font-size: 1.6rem; }
h2 { margin: 1.8rem 0 .8rem; font-size: 1.2rem; }
h3 { margin: 1.2rem 0 .6rem; font-size: 1rem; }

.muted { color: var(--muted); }
.req   { color: var(--err); }

.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.row-between {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: .8rem; gap: 1rem;
}

.cards { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; margin: 1rem 0 2rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  padding: 1rem; text-align: center;
}
.card .big { font-size: 2rem; font-weight: 700; }

.box {
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  padding: 1rem; margin-bottom: 1rem;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }

.form label {
  display: flex; flex-direction: column; gap: .25rem;
  margin-bottom: .8rem; font-size: .9rem;
}
.form input, .form select, .form textarea {
  padding: .5rem .6rem;
  border: 1px solid var(--line); border-radius: 4px;
  font: inherit;
  background: var(--card);
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: 2px solid var(--accent); outline-offset: -1px;
  border-color: var(--accent);
}
.form input[readonly] { background: #f3f4f6; }

.btn {
  display: inline-block;
  background: var(--card); color: var(--fg);
  border: 1px solid var(--line); border-radius: 4px;
  padding: .5rem .9rem; font: inherit; cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--neutral-bg); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-dark); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--err); background: var(--err-bg); }

form.inline { display: inline-flex; gap: .4rem; align-items: center; }
form.inline input[type=text], form.inline input[type=date] {
  padding: .4rem; border: 1px solid var(--line); border-radius: 4px;
}

table.data {
  width: 100%; border-collapse: collapse; margin: 1rem 0;
  background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden;
}
table.data th, table.data td {
  padding: .55rem .75rem; text-align: left; border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
table.data th { background: var(--neutral-bg); font-weight: 600; font-size: .85rem; }
table.data tr:last-child td { border-bottom: 0; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data.compact th, table.data.compact td { padding: .35rem .6rem; font-size: .85rem; }
table.data.lines input { width: 100%; padding: .35rem .4rem; }
table.data.lines input.num { text-align: right; }
table.data tfoot td { border-top: 1px solid var(--line); background: #fafafa; }

.status {
  display: inline-block;
  padding: .15rem .5rem;
  border-radius: 12px;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  background: var(--neutral-bg);
  color: var(--neutral-fg);
}
.status.big { padding: .3rem .9rem; font-size: .85rem; }
.status.draft     { background: var(--warn-bg); color: var(--warn); }
.status.finalized { background: #dbeafe;       color: #1e40af; }
.status.paid      { background: var(--ok-bg);  color: var(--ok);  }
.status.cancelled { background: var(--err-bg); color: var(--err); }

body.auth {
  display: flex; justify-content: center; align-items: center;
  min-height: 100vh; background: #faf6ef;
}
.auth-box {
  background: #fff;
  border: 1px solid var(--line); border-radius: 8px;
  padding: 2rem 2.2rem; width: 360px; max-width: 92vw;
  box-shadow: 0 4px 20px rgba(0,0,0,.04);
}
.auth-brand {
  text-align: center; font-weight: 700; letter-spacing: .25em;
  color: #B89658; font-size: 1.3rem; margin-bottom: .2rem;
}
.flash {
  padding: .6rem .8rem; border-radius: 4px;
  font-size: .9rem; margin: 0 0 1rem;
}
.flash.err { background: var(--err-bg); color: var(--err); }
.flash.ok  { background: var(--ok-bg);  color: var(--ok); }

nav.filter { margin: 1rem 0; display: flex; gap: .4rem; }
nav.filter a {
  padding: .3rem .7rem; border-radius: 4px;
  text-decoration: none; color: var(--muted);
  border: 1px solid var(--line);
  background: var(--card);
  font-size: .85rem;
}
nav.filter a.active { background: var(--accent); color: #fff; border-color: var(--accent); }