:root {
    --bg: #f3f5f7;
    --surface: #ffffff;
    --text: #1f2933;
    --muted: #52606d;
    --line: #d9e2ec;
    --accent: #0b5fff;
    --accent-2: #0045b5;
    --ok: #1f9254;
    --err: #b02a37;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    color: var(--text);
    background: radial-gradient(circle at 10% 10%, #ffffff, var(--bg) 60%);
}

.container {
    width: min(980px, 92%);
    margin: 0 auto;
}

.site-header {
    border-bottom: 1px solid var(--line);
    background: #ffffffcc;
    backdrop-filter: blur(3px);
    position: sticky;
    top: 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
}

.logo {
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 18px;
}

.hero {
    margin-top: 28px;
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
}

.cards {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}

.card,
.panel {
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
}

.narrow {
    max-width: 420px;
}

.btn {
    border: none;
    border-radius: 10px;
    padding: 10px 14px;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
}

.btn:hover {
    background: var(--accent-2);
}

.btn:disabled {
    background: #9aa5b1;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
    background: #6b7785;
}

.form-stack {
    display: grid;
    gap: 10px;
}

.form-stack input {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px;
}

.info-grid {
    margin: 14px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

.info-grid .full {
    grid-column: 1 / -1;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.flash-list {
    list-style: none;
    padding: 0;
    margin: 18px 0;
}

.flash {
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.flash.success {
    background: #dff7ea;
    color: var(--ok);
}

.flash.error {
    background: #fde7ea;
    color: var(--err);
}

.command-result {
    margin-top: 14px;
    border-top: 1px solid var(--line);
    padding-top: 10px;
}

pre {
    white-space: pre-wrap;
    background: #f8fafc;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px;
}

.stderr {
    color: var(--err);
}

@media (max-width: 700px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 8px;
        padding: 8px 0;
    }

    .nav a {
        margin-left: 0;
        margin-right: 14px;
    }
}