:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --fg: #171a20;
  --muted: #5d6673;
  --card: #ffffff;
  --border: #dfe3e9;
  --accent: #2457d6;
  --accent-2: #1d47b0;
  --danger: #b42318;
  --ok: #067647;
  --shadow: 0 4px 18px rgba(16, 24, 40, 0.06);
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --fg: #e7eaef;
    --muted: #9aa4b2;
    --card: #151a21;
    --border: #2a3340;
    --accent: #7aa7ff;
    --accent-2: #9cbdff;
    --danger: #ff8a80;
    --ok: #6ee7b7;
    --shadow: 0 4px 18px rgba(0, 0, 0, 0.3);
  }
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { letter-spacing: -0.02em; }
h1 { font-size: 1.55rem; margin: 0; }
h2 { font-size: 1.15rem; margin: 0 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.hidden { display: none !important; }
.error { color: var(--danger); font-size: 0.9rem; margin: 10px 0; }
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 650;
  padding: 3px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  text-transform: capitalize;
}

/* Login */
body.auth { display: grid; place-items: center; padding: 24px; }
.auth-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 34px 30px;
  box-shadow: var(--shadow);
}
.auth-card .brand { display: inline-block; font-weight: 700; margin-bottom: 22px; color: var(--fg); }
.auth-card h1 { margin-bottom: 4px; }
.auth-card > .muted { margin: 0 0 22px; }
.auth-card label { display: block; margin: 14px 0; font-weight: 600; font-size: 0.88rem; }
.auth-card input {
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
.auth-card input:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); border-color: var(--accent); }
.auth-card button { width: 100%; margin-top: 8px; }
.auth-card .back { display: inline-block; margin-top: 18px; font-size: 0.85rem; }

/* App shell */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 22px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 700; color: var(--fg); }
.topbar .user { display: flex; align-items: center; gap: 14px; font-size: 0.85rem; flex-wrap: wrap; }
.link { background: none; border: 0; color: var(--accent); font: inherit; cursor: pointer; padding: 0; }
.container { width: min(1080px, 100%); margin: 0 auto; padding: 26px 22px 60px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head p { margin: 4px 0 0; }

/* Cards, forms, buttons */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.search { display: flex; gap: 10px; margin-bottom: 16px; }
.search input { flex: 1; }
input, textarea, select {
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
input:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
label { font-weight: 600; font-size: 0.86rem; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid .full { grid-column: 1 / -1; }
.grid label input, .grid label textarea { margin-top: 6px; font-weight: 400; }
.actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
button {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  font: inherit;
  font-weight: 650;
  padding: 9px 14px;
  border-radius: 9px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-2); }
button.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); background: transparent; }
button:disabled { opacity: 0.55; cursor: not-allowed; }
.ghost { background: transparent; }

/* Table */
.table-wrap { padding: 0; overflow: hidden; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); background: color-mix(in srgb, var(--border) 35%, transparent); }
tr:last-child td { border-bottom: 0; }
td .row-actions { display: flex; gap: 8px; justify-content: flex-end; }
td .row-actions button { padding: 5px 9px; font-size: 0.8rem; }
.pager { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 14px; border-top: 1px solid var(--border); font-size: 0.85rem; }
.pager span { color: var(--muted); }

/* Toast */
#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 20px);
  max-width: min(520px, calc(100% - 32px));
  padding: 11px 16px;
  border-radius: 10px;
  background: var(--fg);
  color: var(--bg);
  font-size: 0.88rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 50;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }
#toast.ok { background: var(--ok); color: #fff; }
#toast.erro { background: var(--danger); color: #fff; }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .topbar { padding: 10px 14px; }
  .topbar .user { gap: 10px; font-size: 0.8rem; }
  .container { padding: 20px 14px 48px; }
  .page-head { align-items: flex-start; }
  .page-head button { width: 100%; }
  .search { flex-direction: column; }
  .search button { width: 100%; }
}