:root {
    /* Control-room dark palette */
    --navy: #0c1420;          /* deepest background */
    --navy-light: #1a2537;    /* hover / raised surface */
    --panel: #131d2e;         /* card surface */
    --panel-border: #26324a;
    --yellow: #ffb020;        /* amber LED accent — matches the yellow calendar rule */
    --yellow-dim: #7a5a1a;
    --green: #35d07f;         /* armed / synced / success */
    --red: #ff5470;           /* danger / delete */
    --grey-bg: #0c1420;
    --text: #e9edf3;
    --text-muted: #8a94a6;
    --border: #26324a;
    --font-display: 'Chakra Petch', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--navy);
    color: var(--text);
    background-image: linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 100% 3px;
}

/* ===== Top nav — styled as a keypad strip, with a pulsing status LED ===== */
.topbar {
    background: #0a111c;
    border-bottom: 1px solid var(--panel-border);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.brand::before {
    content: '';
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--yellow);
    box-shadow: 0 0 6px 2px rgba(255,176,32,0.6);
    animation: led-pulse 2.4s ease-in-out infinite;
}
.brand-logo { height: 88px; max-width: 320px; width: auto; display: block; }
@media (max-width: 720px) {
    .brand-logo { height: 64px; max-width: 220px; }
}
@keyframes led-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}
.mainnav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1.25rem;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
}
.mainnav a:hover { color: var(--yellow); border-bottom-color: var(--yellow); }
.navtoggle { display: none; background: none; border: none; color: #fff; font-size: 1.4rem; }

.container { max-width: 1000px; margin: 0 auto; padding: 1.5rem 1rem; }

.card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-top: 2px solid var(--yellow-dim);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

h1, h2 {
    font-family: var(--font-display);
    letter-spacing: 0.3px;
}
h1 { font-size: 1.5rem; margin-top: 0; color: #fff; }
h2 { font-size: 1.1rem; text-transform: uppercase; color: var(--text-muted); font-weight: 600; letter-spacing: 0.8px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--panel-border); font-size: 0.9rem; }
th { color: var(--text-muted); font-weight: 600; font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; }
td { font-family: var(--font-body); }

.mono, td[data-label*="Price"], td[data-label*="Cost"], td[data-label*="Total"],
td[data-label*="date"], td[data-label*="Due"], td[data-label*="SKU"], td[data-label*="Fee"] {
    font-family: var(--font-mono);
}

.btn {
    display: inline-block;
    background: var(--navy-light);
    color: var(--text);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    text-decoration: none;
    cursor: pointer;
}
.btn:hover { background: #22304a; border-color: var(--yellow-dim); }
.btn.yellow { background: var(--yellow); color: #1a1305; font-weight: 700; border-color: var(--yellow); }
.btn.yellow:hover { background: #ffc04d; }
.btn { margin: 0.15rem 0.2rem 0.15rem 0; }
.btn.small { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.btn.danger { background: #3a1418; color: #ff8a99; border-color: #5c1f27; }
.btn.danger:hover { background: #4a1a20; }

.actions-cell { display: flex; flex-wrap: wrap; gap: 0.3rem; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.2rem 0.55rem;
    border-radius: 20px;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; }
.badge.on { background: rgba(53,208,127,0.12); color: var(--green); }
.badge.on .dot { background: var(--green); box-shadow: 0 0 5px 1px rgba(53,208,127,0.5); }
.badge.off { background: rgba(255,84,112,0.1); color: var(--red); }
.badge.off .dot { background: var(--red); }

.page-with-sidebar { display: grid; grid-template-columns: 1fr 340px; gap: 1.5rem; align-items: start; }
.side-col { position: sticky; top: 80px; }
@media (max-width: 900px) {
    .page-with-sidebar { grid-template-columns: 1fr; }
    .side-col { position: static; }
}

.mini-cal { max-width: 320px; }
.mini-cal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; font-family: var(--font-display); }
.mini-cal-header a { text-decoration: none; font-size: 1.3rem; color: var(--yellow); padding: 0 0.5rem; }
.mini-cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; text-align: center; }
.mini-cal-dow { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; padding: 2px 0; font-family: var(--font-mono); }
.mini-cal-day { padding: 6px 0; border-radius: 5px; font-size: 0.82rem; font-family: var(--font-mono); background: #1a2537; color: var(--text-muted); }
.mini-cal-day.empty { background: transparent; }
.mini-cal-day.free { background: #182034; color: var(--text-muted); }
.mini-cal-day.busy { background: var(--yellow); color: #1a1305; font-weight: 700; box-shadow: 0 0 6px 1px rgba(255,176,32,0.35); }
.mini-cal-day.today { border: 2px solid var(--yellow); }
.mini-cal-legend { margin-top: 0.5rem; font-size: 0.78rem; color: var(--text-muted); font-family: var(--font-mono); }
.mini-cal-legend .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 3px; vertical-align: middle; }
.mini-cal-legend .dot.busy { background: var(--yellow); }
.mini-cal-legend .dot.free { background: #182034; border: 1px solid var(--panel-border); }

input[type=text], input[type=email], input[type=tel], input[type=date],
input[type=number], input[type=password], select, textarea {
    width: 100%;
    padding: 0.55rem;
    background: #0e1726;
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    margin-bottom: 0.85rem;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--yellow);
}
label { font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px; color: var(--text-muted); display: block; margin-bottom: 0.25rem; font-family: var(--font-mono); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }

.flash { padding: 0.7rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: 0.9rem; font-family: var(--font-mono); border: 1px solid transparent; }
.flash.success { background: rgba(53,208,127,0.1); color: var(--green); border-color: rgba(53,208,127,0.3); }
.flash.error { background: rgba(255,84,112,0.1); color: var(--red); border-color: rgba(255,84,112,0.3); }

.login-wrap { max-width: 360px; margin: 4rem auto; }

@media (max-width: 720px) {
    .mainnav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: #0a111c;
        border-bottom: 1px solid var(--panel-border);
        padding: 0.5rem 1.25rem 1rem;
    }
    .mainnav.open { display: flex; }
    .mainnav a { margin: 0.5rem 0; }
    .navtoggle { display: block; }
    .grid-2 { grid-template-columns: 1fr; }
    table, thead, tbody, th, td, tr { display: block; }
    thead { display: none; }
    tr { border-bottom: 2px solid var(--panel-border); padding: 0.5rem 0; }
    td { border: none; padding: 0.3rem 0; }
    td::before { content: attr(data-label); font-weight: 600; display: block; font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); text-transform: uppercase; }
}