:root {
    --bg-deep: #071018;
    --bg-panel: rgba(28, 39, 54, 0.92);
    --bg-panel-soft: rgba(18, 28, 39, 0.84);
    --line: rgba(111, 151, 210, 0.24);
    --text-main: #f4f7fb;
    --text-soft: #9fb0be;
    --accent: #ffb703;
    --accent-soft: rgba(255, 183, 3, 0.18);
    --shadow: 0 24px 48px rgba(0, 0, 0, 0.28);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(0, 120, 140, 0.18), transparent 34%),
        linear-gradient(180deg, #0d2028 0%, var(--bg-deep) 100%);
    color: var(--text-main);
}

body {
    min-height: 100vh;
}

.page-shell {
    min-height: 100vh;
    padding: 20px;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 18px;
}

.topbar {
    background: var(--bg-panel);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.topbar-inner {
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 18px;
}

.topbar-brand-right {
    margin-left: auto;
}

.topbar-logo {
    width: 68px;
    height: auto;
    object-fit: contain;
}

.topbar-logo-rs {
    width: 250px;
}

.topbar-title h1 {
    margin: 0;
    font-size: 2rem;
    line-height: 1.1;
}

.subtitle {
    margin-top: 6px;
    color: var(--text-soft);
    font-size: 1rem;
}

.content {
    min-height: 0;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 18px;
}

.switcher-panel,
.frame-panel {
    background: var(--bg-panel);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.switcher-header {
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.switcher-title {
    color: var(--accent);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.switcher-note {
    margin-top: 6px;
    color: var(--text-soft);
}

.switcher-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.switcher-badge {
    border: 1px solid var(--line);
    background: var(--bg-panel-soft);
    color: var(--text-soft);
    border-radius: 999px;
    padding: 10px 16px;
    font: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
}

.switcher-badge.is-active {
    background: var(--accent-soft);
    border-color: rgba(255, 183, 3, 0.45);
    color: var(--text-main);
}

.monitor-frame {
    display: block;
    width: 100%;
    height: calc(100vh - 220px);
    border: 0;
    border-radius: 22px;
    background: #0a131b;
}

@media (max-width: 900px) {
    .page-shell {
        padding: 14px;
    }

    .topbar-inner,
    .switcher-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .topbar-brand-right {
        margin-left: 0;
    }

    .monitor-frame {
        height: calc(100vh - 300px);
    }
}