/* Shared application surface. Load after each page's functional layout CSS. */
body.sera-ui {
    --ui-accent: var(--gold);
    --accent: var(--ui-accent);
    --seat-accent: var(--ui-accent);
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(circle at 8% 0%, rgba(255, 176, 66, .14), transparent 28rem),
        radial-gradient(circle at 92% 9%, rgba(72, 137, 255, .12), transparent 30rem),
        var(--page-bg);
    font-family: Pretendard, "Noto Sans KR", "Malgun Gothic", Arial, sans-serif;
    line-height: 1.6;
}
body.sera-ui main {
    width: min(1180px, calc(100% - 28px));
    max-width: none;
    margin: 0 auto;
    padding: 34px 0 54px;
    min-width: 0;
}
/* Keep the tactical board's established canvas width. */
body.sera-ui main.board-page { width: min(1240px, calc(100% - 28px)); }
.sera-ui .ui-hero {
    --card-color: var(--gold);
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(31, 40, 60, .96), rgba(15, 21, 34, .96));
    box-shadow: 0 20px 60px rgba(0, 0, 0, .28);
    margin-bottom: 20px;
}
.sera-ui .ui-hero::before, .sera-ui .ui-hero::after {
    content: "";
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    pointer-events: none;
}
.sera-ui .ui-hero::before {
    right: -72px;
    bottom: -132px;
    top: auto;
    width: 350px;
    height: 350px;
    border: 0;
    background: color-mix(in srgb, var(--card-color) 10%, transparent);
}
.sera-ui .ui-hero::after {
    right: 170px;
    top: -105px;
    bottom: auto;
    width: 230px;
    height: 230px;
    background: transparent;
    border: 1px solid color-mix(in srgb, var(--card-color) 18%, transparent);
}
.sera-ui .ui-hero h1 {
    margin: 0;
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.2;
    letter-spacing: -.045em;
}
.sera-ui .ui-hero :is(.eyebrow, .seat-eyebrow) {
    color: var(--card-color);
    font-size: 13px;
    font-weight: 850;
    letter-spacing: .16em;
    margin: 0 0 7px;
}
.sera-ui .ui-hero :is(.intro, .hero-description, .sub),
.sera-ui .ui-hero > p:not(.eyebrow):not(.seat-eyebrow),
.sera-ui .ui-hero > div > p:not(.eyebrow):not(.seat-eyebrow) {
    color: var(--muted);
    margin: 11px 0 0;
    max-width: 680px;
    font-size: 15px;
    line-height: 1.65;
}
.sera-ui .ui-card {
    --card-color: var(--gold);
    --accent: var(--card-color);
    --seat-accent: var(--card-color);
    position: relative;
    border: 1px solid var(--line);
    border-radius: 19px;
    --ui-card-background:
        radial-gradient(circle at 100% 100%, color-mix(in srgb, var(--card-color) 9%, transparent), transparent 180px),
        linear-gradient(145deg, rgba(20, 28, 44, .94), rgba(15, 21, 34, .96));
    background: var(--ui-card-background);
    box-shadow: 0 14px 38px rgba(0, 0, 0, .14);
    min-width: 0;
}
.sera-ui .ui-card > :is(h2, h3), .sera-ui .ui-card > div > :is(h2, h3),
.sera-ui .ui-card .summary-value { color: var(--card-color); }
.sera-ui .ui-card .group-icon {
    color: var(--card-color);
    background: color-mix(in srgb, var(--card-color) 10%, transparent);
}
.sera-ui .ui-card :is(input, select, textarea):focus-visible,
.sera-ui .ui-card :is(button, a):focus-visible {
    outline: 2px solid var(--card-color);
    outline-offset: 3px;
}
.sera-ui .ui-card :is(.primary, .calc-btn, .download-button, .button-primary):not(.error):not(.danger) {
    background: var(--card-color);
    border-color: var(--card-color);
    color: #101622;
}
.sera-ui .ui-card .secondary,
.sera-ui .ui-card .download {
    color: var(--card-color);
    border-color: color-mix(in srgb, var(--card-color) 45%, transparent);
    background: transparent;
}
.sera-ui .ui-card .secondary[aria-pressed=true] {
    background: color-mix(in srgb, var(--card-color) 16%, #0c1220);
}
.sera-ui .ui-card .drop-zone {
    border-color: color-mix(in srgb, var(--card-color) 45%, transparent);
}
.sera-ui .ui-card .drop-zone.dragging,
.sera-ui .ui-card input[type=file]::file-selector-button {
    background: color-mix(in srgb, var(--card-color) 16%, #0c1220);
    color: var(--card-color);
}
.sera-ui .ui-card .rate-box {
    background: color-mix(in srgb, var(--card-color) 13%, #0c1220);
}
.sera-ui .ui-card .rate-box strong { color: var(--card-color); }
.sera-ui .ui-card :is(.tag, .choices label) {
    border-color: color-mix(in srgb, var(--card-color) 35%, transparent);
}
.sera-ui .seat-tab.ui-card.is-active {
    color: #101622;
    background: var(--card-color);
    border-color: var(--card-color);
    box-shadow: 0 10px 28px color-mix(in srgb, var(--card-color) 18%, transparent);
}
.sera-ui .seat-tab.ui-card:not(.is-active):hover {
    border-color: var(--card-color);
}
.sera-ui .menu-section { margin-top: 20px; padding-top: 16px; }
.sera-ui .access-card { margin-top: 20px; padding: 24px; }
body.sera-ui.lock-page { display: block; padding: 0; }
.sera-ui main.lock-card {
    width: min(680px, calc(100% - 28px));
    border: 0;
    background: transparent;
    box-shadow: none;
}
.sera-ui .lock-form { padding: 24px; }
.sera-ui .lock-form button { background: var(--card-color); color: #101622; }
.sera-ui #homePanel .card button {
    color: var(--card-color);
    border-color: color-mix(in srgb, var(--card-color) 35%, transparent);
}
.sera-ui #homePanel .ui-card { background: var(--ui-card-background); }
.sera-ui #save { background: var(--card-color); color: #101622; border: 0; }
.sera-ui.device-admin .subtitle { color: var(--muted); }
.sera-ui.device-admin .summary-card[aria-current="page"] {
    border-color: var(--card-color);
    box-shadow: inset 0 0 0 1px var(--card-color);
}
@media (max-width: 600px) {
    body.sera-ui main, body.sera-ui main.board-page {
        width: calc(100% - 18px);
        padding: 12px 0 36px;
    }
    .sera-ui .ui-hero { padding: 23px 20px; border-radius: 19px; }
    .sera-ui .ui-hero :is(.intro, .hero-description, .sub) { font-size: 13px; }
    .sera-ui .ui-card { border-radius: 16px; }
}