:root {
    --bg: #0f1115;
    --panel: #171a21;
    --panel-2: #1f2430;
    --text: #e6e8ee;
    --muted: #9aa3b2;
    --accent: #6ea8ff;
    --accent-2: #8ae9c1;
    --danger: #ff6b6b;
    --border: #2a3040;
    --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }
a:hover { text-decoration: underline; }

.shell {
    max-width: 820px;
    margin: 4rem auto;
    padding: 0 1rem;
}

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 10px 30px rgba(0,0,0,0.35);
}
.card.wide { max-width: none; }

h1 { margin-top: 0; font-size: 1.4rem; }
h2 { font-size: 1.1rem; margin-top: 2rem; border-bottom: 1px solid var(--border); padding-bottom: 0.35rem; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

.stack { display: grid; gap: 1rem; }
.stack label { display: grid; gap: 0.35rem; }
.stack input[type="text"],
.stack input[type="password"],
.stack input[type="number"],
.stack input:not([type]),
.stack select {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.55rem 0.7rem;
    font: inherit;
}
.stack input:focus, .stack select:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

label.check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    display: grid;
    gap: 0.85rem;
}
legend { padding: 0 0.4rem; color: var(--muted); }

button {
    background: var(--accent);
    color: #0a1020;
    border: 0;
    border-radius: 6px;
    padding: 0.6rem 1rem;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}
button:hover { filter: brightness(1.05); }
button.danger-soft { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.link { background: transparent; color: var(--accent); padding: 0; font-weight: 400; }
form.inline { display: inline; }

.flash {
    border-radius: 6px;
    padding: 0.7rem 0.9rem;
    margin: 0.5rem 0 1rem;
    border: 1px solid transparent;
}
.flash-err { border-color: var(--danger); background: rgba(255,107,107,0.08); color: #ffb3b3; }
.flash-ok  { border-color: var(--accent-2); background: rgba(138,233,193,0.08); color: var(--accent-2); }

.otp-input {
    font-size: 1.8rem;
    letter-spacing: 0.6rem;
    text-align: center;
}

.admin-header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }

.totp-block {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.25rem;
    align-items: start;
    padding: 1rem;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}
.totp-block img { width: 160px; height: 160px; background: white; border-radius: 6px; padding: 0.5rem; }
code.break { word-break: break-all; display: inline-block; background: #0b0d12; padding: 0.35rem 0.5rem; border-radius: 4px; }

.os-form { margin: 0.5rem 0 1.5rem; }

.agent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}
.agent-card {
    display: block;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel-2);
    text-decoration: none;
    color: inherit;
    transition: border-color 120ms ease;
}
.agent-card:hover { border-color: var(--accent); text-decoration: none; }
.agent-card h2 { margin-top: 0; border: 0; padding: 0; }
.agent-card .btn {
    display: inline-block;
    margin-top: 0.75rem;
    background: var(--accent);
    color: #0a1020;
    padding: 0.45rem 0.8rem;
    border-radius: 6px;
    font-weight: 600;
}