/*
 * Deliberately plain. The brief asks for useful function over visual polish, so this is a small
 * hand-written sheet with no framework and no build step: readable, and trivial to replace when a
 * real design lands.
 */

:root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --ink: #1d2430;
    --muted: #667085;
    --line: #dfe3e8;
    --accent: #1f5fa8;
    --ok: #1f7a3f;
    --warn: #9a6700;
    --bad: #a32424;
    --busy: #7a3fa8;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink);
    background: var(--bg);
}

.masthead {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 10px 20px;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
}

.brand { font-weight: 700; font-size: 17px; color: var(--ink); text-decoration: none; }
.brand span { color: var(--accent); }

.nav { display: flex; gap: 16px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; padding: 4px 0; }
.nav a:hover { color: var(--accent); }
.nav a.workspace-link { color: var(--accent); font-weight: 600; }

.identity { display: flex; align-items: center; gap: 12px; color: var(--muted); }

.content { max-width: 1280px; margin: 0 auto; padding: 20px; }

.footer {
    max-width: 1280px;
    margin: 0 auto;
    padding: 16px 20px 32px;
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 12px;
}

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 24px 0 8px; }
h3 { font-size: 14px; margin: 16px 0 6px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
p.lead { color: var(--muted); margin: 0 0 16px; }

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 16px;
}

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 14px; }
.tile .value { font-size: 30px; font-weight: 600; line-height: 1.1; }
.tile .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
tbody tr:hover { background: #fafbfc; }
td.numeric, th.numeric { text-align: right; font-variant-numeric: tabular-nums; }

.badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid transparent;
}
.badge-available { background: #e6f4ea; color: var(--ok); }
.badge-notready  { background: #fdf3e0; color: var(--warn); }
.badge-busy      { background: #f2e9fb; color: var(--busy); }
.badge-offline   { background: #eef0f3; color: var(--muted); }
.badge-bad       { background: #fdecec; color: var(--bad); }

form.stacked { display: grid; gap: 12px; max-width: 640px; }
.field { display: grid; gap: 4px; }
.field label { font-weight: 600; font-size: 13px; }
.field .hint { color: var(--muted); font-size: 12px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row .field { flex: 1 1 180px; }

input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 4px;
    font: inherit;
    background: #fff;
    width: 100%;
}
input[type=checkbox] { width: auto; }

button, .button {
    padding: 7px 14px;
    border-radius: 4px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}
button.secondary, .button.secondary { background: #fff; color: var(--accent); }
button.danger, .button.danger { background: #fff; border-color: var(--bad); color: var(--bad); }
button:disabled { opacity: .45; cursor: not-allowed; }

.link-button { background: none; border: none; color: var(--accent); padding: 0; font: inherit; cursor: pointer; }

.banner { padding: 10px 14px; border-radius: 4px; margin-bottom: 16px; border: 1px solid transparent; }
.banner-success { background: #e6f4ea; border-color: #b7dfc3; color: var(--ok); }
.banner-error { background: #fdecec; border-color: #f0bcbc; color: var(--bad); }

.validation { color: var(--bad); font-size: 13px; }

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; }
pre.explanation {
    background: #fbfbfc;
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 12px;
    overflow-x: auto;
    white-space: pre;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 12px;
}

/* Agent workspace */
.workspace { display: grid; grid-template-columns: minmax(280px, 340px) 1fr; gap: 16px; align-items: start; }
@media (max-width: 860px) { .workspace { grid-template-columns: 1fr; } }

.state-display { font-size: 26px; font-weight: 700; }
.state-timer { font-variant-numeric: tabular-nums; color: var(--muted); }

.offer {
    border: 2px solid var(--accent);
    background: #eef4fb;
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 16px;
}
.offer h2 { margin-top: 0; }
.offer .actions { display: flex; gap: 10px; margin-top: 12px; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.hidden { display: none !important; }