* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 18% -10%, rgba(139, 92, 246, .20), transparent 34rem),
        radial-gradient(circle at 82% 4%, rgba(56, 189, 248, .13), transparent 30rem),
        linear-gradient(180deg, #0b0f18 0%, #080b12 42%, #070910 100%);
    color: var(--text);
}

body.bg-light {
    background:
        radial-gradient(circle at 18% -10%, rgba(139, 92, 246, .20), transparent 34rem),
        radial-gradient(circle at 82% 4%, rgba(56, 189, 248, .13), transparent 30rem),
        linear-gradient(180deg, #0b0f18 0%, #080b12 42%, #070910 100%) !important;
    color: var(--text);
}

.app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    min-height: 100vh;
}

.app-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 1.25rem;
    border-right: 1px solid var(--border);
    background: rgba(8, 11, 18, .78);
    backdrop-filter: blur(18px);
}

.brand-mark {
    display: flex;
    align-items: center;
    gap: .8rem;
    margin-bottom: 2rem;
}

.brand-icon {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(139, 92, 246, .42);
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(139, 92, 246, .32), rgba(56, 189, 248, .16));
    box-shadow: 0 12px 30px rgba(139, 92, 246, .20);
    color: var(--text);
    font-weight: 800;
}

.brand-name {
    color: var(--text);
    font-weight: 780;
}

.brand-caption {
    color: var(--text-subtle);
    font-size: .78rem;
}

.sidebar-nav {
    display: grid;
    gap: .45rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .72rem .8rem;
    border: 1px solid transparent;
    border-radius: 12px;
    color: var(--text-muted);
    text-decoration: none;
    transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.sidebar-link:hover,
.sidebar-link.active {
    border-color: var(--border);
    background: var(--bg-hover);
    color: var(--text);
    transform: translateX(2px);
}

.sidebar-link.disabled {
    opacity: .32;
    pointer-events: none;
    cursor: default;
}

.sidebar-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.sidebar-meta {
    position: absolute;
    right: 1.25rem;
    bottom: 1.25rem;
    left: 1.25rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: rgba(17, 22, 34, .62);
    color: var(--text-muted);
    font-size: .84rem;
}

.app-main {
    min-width: 0;
}

.app-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--topbar-height);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    background: rgba(8, 11, 18, .72);
    backdrop-filter: blur(18px);
}

.topbar-pill {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .45rem .7rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text-muted);
    font-size: .82rem;
}

.app-content {
    width: min(1440px, 100%);
    margin: 0 auto;
    padding: 2.25rem;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.7rem;
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr);
    gap: 1.25rem;
}

.dashboard-grid {
    align-items: start;
}

.scrollable-panel {
    max-height: 560px;
    overflow-y: auto;
}

.detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 1.25rem;
    align-items: start;
}

.sticky-panel {
    position: sticky;
    top: calc(var(--topbar-height) + 1.25rem);
}

@media (max-width: 1040px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .app-sidebar {
        position: static;
        height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .sidebar-meta {
        position: static;
        margin-top: 1rem;
    }

    .content-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .sticky-panel {
        position: static;
    }
}

@media (max-width: 720px) {
    .app-topbar,
    .app-content,
    .app-sidebar {
        padding-right: 1rem;
        padding-left: 1rem;
    }

    .page-header {
        flex-direction: column;
    }
}