:root {
    --bg: #f4f1ea;
    --ink: #1c2416;
    --muted: #5c6754;
    --card: #fffdf8;
    --line: #ddd6c8;
    --teal: #0e6b5c;
    --teal-dark: #0a5247;
    --ok: #1f6b3a;
    --ok-bg: #e8f6ec;
    --bad: #9b1c1c;
    --bad-bg: #fdecec;
    --shadow: 0 10px 30px rgba(28, 36, 22, 0.08);
    --radius: 16px;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(1200px 500px at 10% -10%, #dceee4 0%, transparent 55%),
        radial-gradient(900px 400px at 100% 0%, #efe4c8 0%, transparent 50%),
        var(--bg);
}
.shell { display: flex; min-height: 100vh; }
.sidebar {
    width: 230px;
    padding: 24px 18px;
    background: #16352c;
    color: #e8f0e3;
}
.brand { letter-spacing: 0.12em; text-transform: uppercase; font-size: 12px; font-weight: 700; color: #9fd3c8; }
.brand-sub { margin: 6px 0 20px; color: #b7c4b4; font-size: 13px; }
.sidebar nav { display: flex; flex-direction: column; gap: 6px; }
.sidebar a { color: #e8f0e3; text-decoration: none; padding: 8px 10px; border-radius: 10px; font-size: 14px; }
.sidebar a:hover, .sidebar a.active { background: rgba(159, 211, 200, 0.16); }
.logout { display: inline-block; margin-top: 24px; font-size: 13px; color: #c9d6c4; }
.main { flex: 1; padding: 28px 32px 64px; max-width: 1100px; }
h1 { margin: 0 0 8px; font-size: 28px; }
h2 { margin: 0 0 12px; font-size: 18px; }
.sub { color: var(--muted); margin: 0 0 22px; }
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px 22px;
    margin-bottom: 18px;
}
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.stat { padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.stat strong { display: block; font-size: 24px; }
.stat span { color: var(--muted); font-size: 13px; }
label { display: block; font-size: 13px; font-weight: 700; margin: 12px 0 6px; }
input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    font: inherit;
    background: #fff;
}
textarea { min-height: 160px; }
button, .btn {
    border: 0;
    border-radius: 999px;
    padding: 10px 16px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    background: var(--teal);
    color: #fff;
    text-decoration: none;
    display: inline-block;
}
button.secondary, .btn.secondary { background: #fff; color: var(--teal-dark); border: 1px solid var(--line); }
button.danger { background: #fff; color: var(--bad); border: 1px solid #f0c4c4; }
.flash { padding: 12px 14px; border-radius: 12px; margin-bottom: 16px; }
.flash.ok, .flash.success { background: var(--ok-bg); color: var(--ok); }
.flash.error, .flash.bad { background: var(--bad-bg); color: var(--bad); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: #eef6f3; color: var(--teal-dark); font-size: 12px; font-weight: 600; }
.badge.muted { background: #eee8dc; color: var(--muted); }
.option { display: block; border: 2px solid var(--line); border-radius: 12px; padding: 12px; margin: 8px 0; }
.option.selected { border-color: var(--teal); background: #eef6f3; }
.option.disabled { opacity: 0.55; }
.hint { color: var(--muted); font-size: 13px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.login-wrap { max-width: 420px; margin: 80px auto; }
@media (max-width: 800px) {
    .shell { flex-direction: column; }
    .sidebar { width: auto; }
}