:root {
    --bg:          #0d1117;
    --bg2:         #161b22;
    --card:        #1c2128;
    --border:      #30363d;
    --text:        #e6edf3;
    --muted:       #8b949e;
    --up:          #3fb950;
    --up-dim:      #1a3a1f;
    --degraded:    #d29922;
    --degraded-dim:#3a2a00;
    --down:        #f85149;
    --down-dim:    #3a1010;
    --accent:      #58a6ff;
    --warn:        #d29922;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --mono: 'SFMono-Regular', Consolas, monospace;
    --r: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

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

code {
    font-family: var(--mono);
    font-size: 12px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 6px;
    word-break: break-all;
}

/* ─── Navbar ─────────────────────────────────────────────────────────────── */
.navbar {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    height: 52px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .02em;
    color: var(--text);
}

.nav-brand span { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: .75rem; }

.nav-refresh {
    font-size: 12px;
    color: var(--muted);
}

/* ─── Layout ─────────────────────────────────────────────────────────────── */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .4rem .85rem;
    border-radius: var(--r);
    font-size: 13px;
    font-family: var(--font);
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    transition: background .15s, border-color .15s;
    white-space: nowrap;
}
.btn:hover { background: var(--bg2); border-color: var(--accent); text-decoration: none; }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #000;
}
.btn-primary:hover { background: #79b8ff; border-color: #79b8ff; }

.btn-danger {
    background: var(--down-dim);
    border-color: var(--down);
    color: var(--down);
}
.btn-danger:hover { background: var(--down); color: #fff; }

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--muted);
}
.btn-ghost:hover { color: var(--text); background: var(--card); }

.btn-sm { padding: .25rem .6rem; font-size: 12px; }

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.input {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--r);
    padding: .4rem .75rem;
    font-size: 13px;
    font-family: var(--font);
    outline: none;
    transition: border-color .15s;
}
.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--muted); }

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 1rem 1.25rem;
}

/* ─── Stats bar ──────────────────────────────────────────────────────────── */
.stats-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.stat-pill {
    display: flex;
    align-items: center;
    gap: .4rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: .35rem .85rem;
    font-size: 13px;
}

.stat-pill .num {
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
}

.stat-pill.up     { border-color: var(--up);       }
.stat-pill.up .num{ color: var(--up);               }
.stat-pill.degraded { border-color: var(--degraded);}
.stat-pill.degraded .num { color: var(--degraded);  }
.stat-pill.down   { border-color: var(--down);      }
.stat-pill.down .num { color: var(--down);           }

.stat-label { color: var(--muted); font-size: 12px; }

.spacer { flex: 1; }

/* ─── Add-server form ────────────────────────────────────────────────────── */
.add-form {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.add-form h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: .75rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.form-row {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}

.input-name  { flex: 1; min-width: 150px; }
.input-ip    { flex: 1; min-width: 150px; }
.input-port  { width: 80px; }

/* ─── Token notice ───────────────────────────────────────────────────────── */
.token-notice {
    background: var(--up-dim);
    border: 1px solid var(--up);
    border-radius: var(--r);
    padding: .85rem 1.25rem;
    margin-bottom: 1.25rem;
    font-size: 13px;
}

.token-notice strong { color: var(--up); }

/* ─── Servers grid ───────────────────────────────────────────────────────── */
.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 1rem;
}

/* ─── Server card ────────────────────────────────────────────────────────── */
.server-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .65rem;
    transition: border-color .2s;
}

.server-card.state-up       { border-left: 3px solid var(--up);       }
.server-card.state-degraded { border-left: 3px solid var(--degraded); }
.server-card.state-down     { border-left: 3px solid var(--down);     }

.card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: .5rem;
}

.card-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.card-ip {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
}

.state-badge {
    display: inline-block;
    border-radius: 4px;
    padding: .2rem .55rem;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .05em;
    white-space: nowrap;
}

.badge-up       { background: var(--up-dim);       color: var(--up);       border: 1px solid var(--up);       }
.badge-degraded { background: var(--degraded-dim); color: var(--degraded); border: 1px solid var(--degraded); }
.badge-down     { background: var(--down-dim);     color: var(--down);     border: 1px solid var(--down);     }

/* ─── Metrics row ────────────────────────────────────────────────────────── */
.metrics-row {
    display: flex;
    gap: 1rem;
}

.metric {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.metric-val {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

.metric-val.warn { color: var(--degraded); }
.metric-val.crit { color: var(--down); }

.metric-label {
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* ─── Checks row ─────────────────────────────────────────────────────────── */
.checks-row {
    display: flex;
    gap: .35rem;
    flex-wrap: wrap;
}

.check-chip {
    font-size: 11px;
    font-weight: 600;
    padding: .15rem .45rem;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: .25rem;
}

.chip-ok   { background: var(--up-dim);       color: var(--up);       }
.chip-fail { background: var(--down-dim);     color: var(--down);     }
.chip-warn { background: var(--degraded-dim); color: var(--degraded); }

/* ─── Card footer ────────────────────────────────────────────────────────── */
.card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border);
    padding-top: .5rem;
    margin-top: auto;
}

.last-seen {
    font-size: 11px;
    color: var(--muted);
}

/* ─── Recent alerts (dashboard) ──────────────────────────────────────────── */
.section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: .75rem;
}

.alerts-list { display: flex; flex-direction: column; gap: .4rem; }

.alert-row {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: 12px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: .45rem .85rem;
}

.alert-time { color: var(--muted); white-space: nowrap; }
.alert-srv  { font-weight: 600; }
.alert-msg  { color: var(--muted); flex: 1; }

/* ─── Detail page ────────────────────────────────────────────────────────── */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.section-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 1rem 1.25rem;
}

.section-card h3 {
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: .75rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: .5rem;
}

.kv-list { display: flex; flex-direction: column; gap: .35rem; }

.kv-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.kv-key   { color: var(--muted); }
.kv-val   { font-weight: 500; }
.kv-good  { color: var(--up); }
.kv-bad   { color: var(--down); }
.kv-warn  { color: var(--degraded); }

.chart-wrap {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 1rem;
}
.back-link:hover { color: var(--text); text-decoration: none; }

/* ─── Login page ─────────────────────────────────────────────────────────── */
.login-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.login-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    width: 100%;
    max-width: 380px;
}

.login-box h1 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
}

.login-box .input {
    width: 100%;
    padding: .65rem .85rem;
    font-size: 14px;
    margin-bottom: .75rem;
}

.login-box .btn-primary {
    width: 100%;
    justify-content: center;
    padding: .65rem;
    font-size: 14px;
}

.error-msg {
    background: var(--down-dim);
    border: 1px solid var(--down);
    color: var(--down);
    border-radius: 6px;
    padding: .55rem .85rem;
    font-size: 13px;
    margin-bottom: .75rem;
}

/* ─── Empty state ────────────────────────────────────────────────────────── */
.empty {
    text-align: center;
    color: var(--muted);
    padding: 3rem;
    background: var(--card);
    border: 1px dashed var(--border);
    border-radius: var(--r);
}

/* ─── Hidden ─────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .main { padding: 1rem .75rem; }
    .servers-grid { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; }
    .input-port { width: 100%; }
}