.demo-session-banner {
    position: sticky;
    top: 0;
    z-index: 10020;
    min-height: 58px;
    padding: 8px clamp(12px, 3vw, 28px);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(14px, 3vw, 30px);
    background: #151515;
    border-bottom: 2px solid #ec681d;
    color: #fff;
    font-family: Inter, system-ui, sans-serif;
}

.demo-session-label { display: grid; gap: 1px; }
.demo-session-label strong { font-size: 0.86rem; }
.demo-session-label span { color: #aaa7a1; font-size: 0.7rem; }
.demo-session-clock { display: grid; grid-template-columns: repeat(4, minmax(42px, 1fr)); gap: 5px; }
.demo-session-clock span { display: grid; min-width: 46px; padding: 4px 7px; border-left: 1px solid #3b3936; text-align: center; }
.demo-session-clock b { font-size: 0.92rem; font-variant-numeric: tabular-nums; }
.demo-session-clock small { color: #aaa7a1; font-size: 0.59rem; text-transform: uppercase; }
.demo-session-banner button { border: 1px solid #4b4843; border-radius: 4px; background: transparent; color: #fff; min-height: 34px; padding: 0 12px; cursor: pointer; }
.is-demo-session .header-return-link { display: none !important; }
.is-demo-session [onclick="logout()"] { display: none !important; }
.is-demo-session .app-header { top: 58px; }

.demo-expired-overlay {
    position: fixed;
    inset: 0;
    z-index: 20000;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.84);
    font-family: Inter, system-ui, sans-serif;
}

.demo-expired-overlay section { width: min(460px, 100%); padding: 30px; border-top: 4px solid #ec681d; background: #fff; color: #181818; }
.demo-expired-kicker { color: #d9560e; font-size: 0.72rem; font-weight: 900; text-transform: uppercase; }
.demo-expired-overlay h2 { margin: 10px 0; font-size: 1.65rem; }
.demo-expired-overlay p { color: #5f5b55; line-height: 1.55; }
.demo-expired-overlay a, .demo-expired-overlay button { display: flex; width: 100%; min-height: 46px; margin-top: 10px; align-items: center; justify-content: center; border-radius: 4px; text-decoration: none; font: inherit; font-weight: 800; }
.demo-expired-overlay a { border: 1px solid #ec681d; background: #ec681d; color: #fff; }
.demo-expired-overlay button { border: 1px solid #ccc7bf; background: #fff; color: #272727; cursor: pointer; }

@media (max-width: 600px) {
    .demo-session-banner { position: sticky; min-height: 66px; justify-content: space-between; gap: 8px; padding: 6px 10px; }
    .demo-session-label span { display: none; }
    .demo-session-label strong { max-width: 74px; font-size: 0.72rem; line-height: 1.2; }
    .demo-session-clock { flex: 1; gap: 1px; }
    .demo-session-clock span { min-width: 34px; padding: 3px 2px; }
    .demo-session-banner button { width: 34px; padding: 0; overflow: hidden; font-size: 0; }
    .demo-session-banner button::after { content: '×'; font-size: 1.2rem; }
    .is-demo-session .app-header { top: 66px; }
}