:root {
    --bg: #ffffff;
    --surface: #f7f8fa;
    --panel: #ffffff;
    --panel-2: #fafbfc;
    --border: #e8eaed;
    --border-strong: #d7dbe0;
    --text: #171a20;
    --muted: #5c5e62;
    --accent: #3b82f6;
    --btn-text: #ffffff;
    --red: #e82127;
    --amber: #b45309;
    --green: #16a34a;
    --radius: 6px;
    --btn-hover: #2563eb;
    --focus-ring: rgba(59, 130, 246, 0.18);
    --topbar-bg: #ffffff;
    --input-bg: #ffffff;
    --login-grad-1: #f4f6f8;
    --login-grad-2: #ffffff;
    --alert-success-text: #14532d;
    --alert-error-text: #8f1115;
}

[data-theme="dark"] {
    --bg: #0a0b0d;
    --surface: #101214;
    --panel: #14161a;
    --panel-2: #1a1d22;
    --border: #23272d;
    --border-strong: #33383f;
    --text: #e8eaed;
    --muted: #9aa1a9;
    --accent: #3b82f6;
    --btn-text: #ffffff;
    --red: #f2363c;
    --amber: #e0a52f;
    --green: #3fbd6f;
    --btn-hover: #2563eb;
    --focus-ring: rgba(255, 255, 255, 0.14);
    --topbar-bg: #0a0b0d;
    --input-bg: #0e1013;
    --login-grad-1: #101214;
    --login-grad-2: #0a0b0d;
    --alert-success-text: #86efac;
    --alert-error-text: #fca5a5;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Helvetica Neue", Helvetica, Arial, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Topbar ---------- */

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    height: 60px;
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.brand {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text);
}
.brand span { font-weight: 400; color: var(--muted); }

.topbar nav { display: flex; align-items: center; gap: 4px; }
.topbar nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 8px 14px;
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.15s ease;
}
.topbar nav a:hover { color: var(--text); }
.topbar nav a.active { color: var(--text); border-bottom-color: var(--text); }

/* ---------- Layout ---------- */

.container { max-width: 1180px; margin: 0 auto; padding: 34px 30px; }

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin-bottom: 22px;
}

.card h2 { margin: 0 0 14px; font-size: 16px; font-weight: 500; letter-spacing: 0.02em; }

/* ---------- Stats ---------- */

.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 22px;
}

.stat {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
}

.stat .label {
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 500;
}
.stat .value { font-size: 32px; font-weight: 300; margin-top: 6px; letter-spacing: 0.01em; }
.stat.ok .value { color: var(--green); }
.stat.warning .value { color: var(--amber); }
.stat.critical .value { color: var(--red); }

/* ---------- Tables ---------- */

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 12px; font-size: 13.5px; }
th {
    color: var(--muted);
    font-weight: 500;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 1px solid var(--border-strong);
    padding: 8px 12px;
}
td { border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--panel-2); }

/* ---------- Badges & tags ---------- */

.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 1px solid transparent;
}
.badge.critical { background: rgba(232, 33, 39, 0.06); border-color: rgba(232, 33, 39, 0.35); color: var(--red); }
.badge.warning { background: rgba(180, 83, 9, 0.07); border-color: rgba(180, 83, 9, 0.35); color: var(--amber); }
.badge.ok { background: rgba(22, 163, 74, 0.07); border-color: rgba(22, 163, 74, 0.35); color: var(--green); }

.tag {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 3px;
    font-size: 12px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--muted);
}

/* ---------- Buttons ---------- */

.btn:not(:disabled):not([disabled]) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border: 1px solid var(--accent);
    cursor: pointer;
    border-radius: 6px;
    padding: 11px 24px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.07em;
    line-height: 1.2;
    text-transform: uppercase;
    background: var(--accent);
    color: var(--btn-text);
    text-decoration: none;
    box-shadow: 0 2px 5px rgba(15, 23, 42, 0.16);
    transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.btn:not(:disabled):not([disabled]):hover { background: var(--btn-hover); border-color: var(--btn-hover); box-shadow: 0 4px 10px rgba(15, 23, 42, 0.2); transform: translateY(-1px); }
.btn:disabled,
.btn[disabled] { opacity: 0.45; cursor: not-allowed; box-shadow: none; transform: none; }
.btn:disabled:hover,
.btn[disabled]:hover { background: var(--accent); border-color: var(--accent); box-shadow: none; }
.btn.btn-outline { background: transparent; border: 1px solid var(--accent); color: var(--text); box-shadow: none; }
.btn.btn-outline:hover { background: var(--accent); color: var(--btn-text); }
.btn-lg { padding: 14px 30px; font-size: 13px; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); text-transform: uppercase; letter-spacing: 0.09em; font-size: 12px; font-weight: 500; padding: 10px 20px; border-radius: 4px; cursor: pointer; }
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); background: var(--panel-2); box-shadow: none; transform: none; }

.legal-footer {
    max-width: 1180px;
    margin: 0 auto;
    padding: 22px 30px 30px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    color: var(--muted);
    font-size: 11px;
    line-height: 1.5;
}
.legal-footer strong { color: var(--text); font-size: 12px; }
.login-legal { max-width: 520px; padding: 0 24px 24px; }

@media (max-width: 760px) {
    .legal-footer { padding-left: 20px; padding-right: 20px; }
}

/* ---------- Alerts ---------- */

.alert {
    padding: 14px 18px;
    border-radius: 4px;
    margin-bottom: 18px;
    font-size: 14px;
    border-left: 3px solid transparent;
}
.alert-success { background: rgba(22, 163, 74, 0.07); border-left-color: var(--green); color: var(--alert-success-text); }
.alert-error { background: rgba(232, 33, 39, 0.06); border-left-color: var(--red); color: var(--alert-error-text); }
.alert ul { margin: 4px 0 0; padding-left: 18px; }

/* ---------- Forms ---------- */

label { display: block; font-weight: 500; margin: 16px 0 6px; font-size: 13px; letter-spacing: 0.02em; }
label small { font-weight: 400; color: var(--muted); }
input[type="text"], input[type="password"], input[type="email"], input[type="number"], input[type="url"], select, textarea {
    width: 100%;
    padding: 10px 12px;
    border-radius: 4px;
    border: 1px solid var(--border-strong);
    background: var(--input-bg);
    color: var(--text);
    font-size: 14px;
    transition: border-color 0.15s ease;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus-ring); }

.lang-form { display: inline-flex; align-items: center; }
.lang-select {
    width: auto;
    padding: 8px 10px;
    font-size: 12px;
    letter-spacing: 0.04em;
    cursor: pointer;
    background: var(--input-bg);
    color: var(--text);
    border-radius: 4px;
    border: 1px solid var(--border-strong);
}
.lang-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus-ring); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
.form-group { margin-bottom: 6px; }
.field-hint { color: var(--muted); font-size: 12px; margin-top: 5px; }

/* ---------- Login ---------- */

.login-wrap {
    max-width: 400px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(ellipse at 50% 0%, var(--login-grad-1) 0%, var(--login-grad-2) 55%);
}
.login-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 42px 40px;
}
.login-card h1 {
    margin: 0 0 6px;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
}
.login-card .sub { margin: 0 0 8px; font-size: 14px; }

/* ---------- Utilities ---------- */

.muted { color: var(--muted); }
.empty { color: var(--muted); text-align: center; padding: 44px 0; font-size: 14px; }
.mt { margin-top: 18px; }
.mb { margin-bottom: 16px; }
.inline { display: inline; }
.actions { display: flex; gap: 12px; align-items: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

/* ---------- Manual ---------- */

.manual h2 { font-size: 20px; margin-top: 4px; font-weight: 500; }
.manual h3 { font-size: 15px; margin: 24px 0 8px; font-weight: 500; letter-spacing: 0.02em; }
.manual p, .manual li { color: var(--muted); line-height: 1.7; }
.manual ul, .manual ol { padding-left: 20px; }
.manual ol.steps { counter-reset: step; }
.manual ol.steps > li { list-style: none; position: relative; padding-left: 42px; margin-bottom: 14px; counter-increment: step; }
.manual ol.steps > li::before {
    content: counter(step);
    position: absolute; left: 0; top: 1px;
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent); color: var(--btn-text);
    border-radius: 50%; font-weight: 500; font-size: 13px;
}
.manual code, .manual kbd {
    background: var(--panel-2); border: 1px solid var(--border);
    padding: 1px 6px; border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; color: var(--text);
}
.manual pre {
    background: var(--panel-2); border: 1px solid var(--border);
    padding: 14px 16px; border-radius: 4px; overflow-x: auto;
}
.manual pre code { background: none; border: none; padding: 0; }
.manual .callout {
    border-left: 3px solid var(--accent);
    background: var(--panel-2);
    padding: 12px 16px; border-radius: 0 4px 4px 0; margin: 16px 0;
    font-size: 14px;
}
.manual .callout.warn { border-left-color: var(--amber); }
.manual .toc a { color: var(--muted); text-decoration: none; }
.manual .toc a:hover { color: var(--text); }

/* ---------- Focus visibility ---------- */

a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}