:root {
  --ink: #1c1915;
  --muted: #6b645c;
  --line: #e4ddd4;
  --paper: #f6f3ee;
  --card: #fffdf9;
  --accent: #0f6e56;
  --accent-ink: #f4fff9;
  --danger: #9f2d2d;
  --warn: #8a5a12;
  --shadow: 0 10px 30px rgba(28, 25, 21, 0.06);
  font-family: "Segoe UI", Candara, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
}

button.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

button.danger {
  color: var(--danger);
  border-color: #e7c7c7;
}

button:disabled { opacity: 0.55; cursor: not-allowed; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
}

textarea { min-height: 5rem; resize: vertical; }

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.login .card {
  width: min(440px, 100%);
  padding: 1.5rem;
}

h1, h2, h3 { margin: 0 0 0.4rem; font-weight: 650; }
p { margin: 0.3rem 0; }

.muted { color: var(--muted); }
.stack { display: grid; gap: 0.75rem; }
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.error {
  background: #fff1f1;
  color: var(--danger);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
}
.ok {
  background: #eef8f3;
  color: var(--accent);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
}

.shell { min-height: 100vh; display: grid; grid-template-columns: 220px 1fr; }
.nav {
  background: #241f1a;
  color: #f6f3ee;
  padding: 1.1rem 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.nav button {
  text-align: left;
  background: transparent;
  color: inherit;
  border-color: transparent;
}
.nav button.active { background: #3a332c; }
.brand { padding: 0.3rem 0.6rem 0.8rem; }
.brand strong { display: block; }
.nav .spacer { flex: 1; }
.main { padding: 1.25rem; }
.top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.7rem; }
.stat { padding: 0.9rem; }
.stat span { display: block; color: var(--muted); font-size: 0.85rem; }
.stat strong { font-size: 1.35rem; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 0.65rem 0.7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: #faf7f2; }
.pill {
  display: inline-block;
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  background: #efeae3;
  font-size: 0.78rem;
}
.filters { display: grid; grid-template-columns: 1.4fr 0.8fr auto; gap: 0.5rem; margin-bottom: 0.8rem; }
.split { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 0.8rem; }
.panel { padding: 1rem; }
.messages { display: grid; gap: 0.5rem; max-height: 280px; overflow: auto; }
.bubble { border: 1px solid var(--line); border-radius: 10px; padding: 0.5rem 0.65rem; background: #fff; }
.bubble small { color: var(--muted); }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .nav .spacer { display: none; }
  .filters, .split { grid-template-columns: 1fr; }
}