:root {
    --bg: #f4f6f8;
    --panel: #fff;
    --text: #1f2937;
    --muted: #6b7280;
    --primary: #1d4ed8;
    --ok: #047857;
    --warn: #b45309;
    --error: #b91c1c;
    --border: #e5e7eb;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}
.container { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }
.site-header {
    background: #111827;
    color: #fff;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}
.logo { color: #fff; text-decoration: none; font-weight: 700; }
nav a { color: #d1d5db; margin-left: 1rem; text-decoration: none; }
nav a:hover { color: #fff; }
.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.stat-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
}
.stat-label { display: block; color: var(--muted); font-size: .9rem; }
table { width: 100%; border-collapse: collapse; background: var(--panel); }
th, td { padding: .65rem .75rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.badge {
    display: inline-block;
    padding: .15rem .5rem;
    border-radius: 999px;
    font-size: .85rem;
}
.status-ok { background: #d1fae5; color: var(--ok); }
.status-warn { background: #fef3c7; color: var(--warn); }
.status-error { background: #fee2e2; color: var(--error); }
.status-neutral { background: #e5e7eb; color: #374151; }
.alert { padding: .75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-success { background: #d1fae5; color: var(--ok); }
.alert-error { background: #fee2e2; color: var(--error); }
.muted { color: var(--muted); }
.row-warn { background: #fffbeb; }
.warn-panel { border-color: #fcd34d; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 1rem; }
button, .secondary {
    background: var(--primary);
    color: #fff;
    border: 0;
    border-radius: 6px;
    padding: .55rem .9rem;
    cursor: pointer;
}
button.secondary { background: #6b7280; }
.inline-form { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
input[type=text], input[type=password], select {
    padding: .45rem .6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
}
.filter-form { display: flex; gap: .75rem; align-items: end; margin-bottom: 1rem; }
.log-list { list-style: none; padding: 0; }
.log-list li { padding: .4rem 0; border-bottom: 1px solid var(--border); }
.login-page { min-height: 100vh; display: grid; place-items: center; }
.login-box {
    background: var(--panel);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    width: min(100%, 360px);
}
.login-box label { display: block; margin-bottom: 1rem; }
.login-box input { width: 100%; margin-top: .35rem; }
.stock-ok { background: #ecfdf5; }
.stock-warn { background: #fffbeb; }
.stock-error { background: #fef2f2; }