:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --ink: #1f2933;
    --muted: #6b7280;
    --brand: #2563eb;
    --brand-dark: #1e40af;
    --danger: #dc2626;
    --ok-bg: #ecfdf5;
    --ok-ink: #065f46;
    --err-bg: #fef2f2;
    --err-ink: #991b1b;
    --info-bg: #eff6ff;
    --info-ink: #1e3a8a;
    --line: #e5e7eb;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.5;
}

.topbar {
    background: var(--brand-dark);
    color: #fff;
    padding: 12px 20px;
    font-weight: 600;
}
.topbar .brand { font-size: 1.05rem; }

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px 16px;
}
.nav a {
    text-decoration: none;
    color: var(--ink);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: .95rem;
}
.nav a:hover { background: var(--bg); }
.nav a.active { background: var(--brand); color: #fff; }
.nav a.logout { margin-inline-start: auto; color: var(--danger); }

.container { max-width: 1000px; margin: 24px auto; padding: 0 16px; }
h1 { font-size: 1.4rem; margin: 0 0 16px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 18px;
    margin-bottom: 18px;
    max-width: 640px;
}
.card.login { max-width: 360px; margin: 48px auto; }
.card.filters { max-width: 100%; }

label {
    display: block;
    margin-bottom: 12px;
    font-size: .9rem;
    color: var(--muted);
}
input, select {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font-size: 1rem;
    background: #fff;
    color: var(--ink);
}
input:focus, select:focus { outline: 2px solid var(--brand); border-color: var(--brand); }

.cities {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 4px 0 8px;
}
.chk {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 6px 10px;
    border: 1px solid var(--line);
    border-radius: 20px;
    color: var(--ink);
    background: var(--bg);
}
.chk input { width: auto; margin: 0; }
.hint { font-size: .8rem; color: var(--muted); margin: 0 0 12px; }

button, .btn {
    display: inline-block;
    background: var(--brand);
    color: #fff;
    border: 0;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
}
button:hover, .btn:hover { background: var(--brand-dark); }
.btn.small { padding: 6px 12px; font-size: .85rem; }
.btn.danger, button.danger { background: var(--danger); }
.btn.danger:hover, button.danger:hover { background: #991b1b; }

.alert { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; font-size: .95rem; }
.alert.ok { background: var(--ok-bg); color: var(--ok-ink); }
.alert.err { background: var(--err-bg); color: var(--err-ink); }
.alert.info { background: var(--info-bg); color: var(--info-ink); }

table.grid {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    overflow: hidden;
    font-size: .9rem;
}
.grid th, .grid td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: right; }
.grid th { background: var(--bg); color: var(--muted); font-weight: 600; }
.grid tr:last-child td { border-bottom: 0; }
.grid .actions { display: flex; gap: 8px; align-items: center; }
.grid .actions form { margin: 0; }

.cards { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.stat {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 18px 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 160px;
}
.stat .num { font-size: 1.8rem; font-weight: 700; color: var(--brand); }
.stat span:last-child { color: var(--muted); font-size: .9rem; }