:root {
    --bg: #0f1117;
    --panel: #171a23;
    --panel-2: #1e222d;
    --border: #2a2f3d;
    --text: #e6e8ee;
    --text-dim: #9aa0ae;
    --accent: #25d366;
    --accent-dark: #1da851;
    --danger: #e5484d;
    --warn: #e5a13d;
    --info: #4d9ee5;
    --radius: 10px;
    --json-bg: #0b0d12;
    --btn-text-on-accent: #08130c;
}

[data-theme="light"] {
    --bg: #f4f5f7;
    --panel: #ffffff;
    --panel-2: #eef0f3;
    --border: #dde1e7;
    --text: #1c1f26;
    --text-dim: #656d7a;
    --accent: #1a9e53;
    --accent-dark: #167f43;
    --danger: #d13438;
    --warn: #b3730a;
    --info: #1868b3;
    --json-bg: #eef0f3;
    --btn-text-on-accent: #ffffff;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

a { color: var(--info); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 230px;
    background: var(--panel);
    border-right: 1px solid var(--border);
    padding: 20px 14px;
    flex-shrink: 0;
}

.sidebar h1 {
    font-size: 16px;
    margin: 0 0 20px 6px;
    color: var(--accent);
}

.sidebar nav a {
    display: block;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--text-dim);
    margin-bottom: 2px;
    font-weight: 500;
}

.sidebar nav a:hover,
.sidebar nav a.active {
    background: var(--panel-2);
    color: var(--text);
    text-decoration: none;
}

.sidebar .footer-user {
    margin-top: 30px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-dim);
}

.main {
    flex: 1;
    padding: 28px 32px;
    max-width: 1200px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
    flex-wrap: wrap;
    gap: 10px;
}

.page-header h2 { margin: 0; font-size: 20px; }

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.card h3 { margin-top: 0; font-size: 15px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .04em; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--text-dim); font-size: 13px; }

input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
    width: 100%;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 9px 11px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 14px;
}

textarea { resize: vertical; min-height: 70px; font-family: inherit; }

button, .btn {
    display: inline-block;
    background: var(--accent);
    color: var(--btn-text-on-accent);
    border: none;
    padding: 9px 16px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 13px;
}

button:hover, .btn:hover { background: var(--accent-dark); text-decoration: none; }
button.secondary, .btn.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button.danger, .btn.danger { background: var(--danger); color: #fff; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--text-dim); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: .03em; }
tr:hover td { background: var(--panel-2); }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.badge.ok { background: rgba(37,211,102,.15); color: var(--accent); }
.badge.off { background: rgba(229,72,77,.15); color: var(--danger); }
.badge.warn { background: rgba(229,161,61,.15); color: var(--warn); }
.badge.info { background: rgba(77,158,229,.15); color: var(--info); }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; }
.alert.success { background: rgba(37,211,102,.12); border: 1px solid rgba(37,211,102,.3); color: var(--accent); }
.alert.error { background: rgba(229,72,77,.12); border: 1px solid rgba(229,72,77,.3); color: var(--danger); }

pre.json {
    background: var(--json-bg);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: 8px;
    max-height: 260px;
    overflow: auto;
    font-size: 12px;
    white-space: pre-wrap;
    word-break: break-word;
}

.login-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-box {
    width: 340px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
}

.login-box h1 { color: var(--accent); text-align: center; margin-top: 0; }

.tabs { display: flex; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }
.tabs a {
    padding: 7px 14px;
    border-radius: 8px;
    background: var(--panel-2);
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 500;
}
.tabs a.active { background: var(--accent); color: var(--btn-text-on-accent); }

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 8px;
    margin-bottom: 16px;
}

.theme-toggle span { font-size: 12px; color: var(--text-dim); }

.theme-toggle button {
    background: transparent;
    color: var(--text-dim);
    border: none;
    padding: 5px 9px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.theme-toggle button.active {
    background: var(--accent);
    color: var(--btn-text-on-accent);
}

.text-dim { color: var(--text-dim); }
.mt-0 { margin-top: 0; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.qr-box { text-align: center; padding: 20px; }
.qr-box img { max-width: 260px; border-radius: 8px; background: #fff; padding: 10px; }

.msg-view-pretty { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; }
.msg-view-pretty .msg-text { white-space: pre-wrap; word-break: break-word; }
.msg-toggle-btn { font-family: monospace; }