:root {
  --bg: #f6f3ee;
  --ink: #1c1917;
  --accent: #c2410c;
  --card: #ffffff;
  --line: #e7e5e4;
  --muted: #78716c;
  --ok: #15803d;
  --err: #b91c1c;
  --font: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(ellipse at top left, #fed7aa 0%, transparent 45%),
    radial-gradient(ellipse at bottom right, #ffedd5 0%, transparent 40%),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.landing main {
  max-width: 640px;
  margin: 12vh auto;
  padding: 2rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar {
  background: #1c1917;
  color: #fafaf9;
  padding: 1.25rem;
}
.sidebar h2 { font-size: 1.1rem; margin: 0 0 1rem; }
.sidebar a {
  display: block;
  color: #e7e5e4;
  padding: 0.45rem 0.5rem;
  border-radius: 6px;
  margin-bottom: 0.2rem;
}
.sidebar a:hover, .sidebar a.active {
  background: #292524;
  text-decoration: none;
  color: #fff;
}
.content { padding: 1.5rem 2rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}
h1 { margin-top: 0; font-size: 1.5rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
.btn, button, input[type=submit] {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font-size: 0.95rem;
  text-decoration: none !important;
}
.btn.secondary { background: #44403c; }
.btn.danger { background: var(--err); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.55rem 0.4rem; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
label { display: block; margin: 0.6rem 0 0.25rem; font-size: 0.9rem; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=date], select, textarea {
  width: 100%;
  max-width: 480px;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: #fff;
}
.flash-ok { background: #dcfce7; color: var(--ok); padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.flash-err { background: #fee2e2; color: var(--err); padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.login-box {
  max-width: 400px;
  margin: 15vh auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.5rem;
}
@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: flex; flex-wrap: wrap; gap: 0.35rem; }
  .sidebar a { display: inline-block; }
}