/* ===================================================================
 * layout.css — Management-Common Layout System
 * App layout, sidebar, header, main content, page system, responsive.
 * Shared across: control-service, tlog-service, game-ops-service.
 *
 * Control + Game-Ops use the fixed-sidebar layout (default).
 * TLog uses a CSS Grid variant — override .app-layout / .sidebar in
 * its own tlog.css when needed.
 * =================================================================== */

/* ===== App Layout ===== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    position: fixed;
    left: 0; top: 0; bottom: 0;
    z-index: 100;
    background: linear-gradient(180deg, hsl(var(--surface) / 0.92) 0%, hsl(var(--background-soft) / 0.96) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid hsl(var(--border));
    box-shadow: 1px 0 0 hsl(var(--border)), 12px 0 32px rgb(15 23 42 / 0.05);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-slow);
}

.sidebar-brand {
    padding: 20px;
}

.brand-sub {
    font-size: 14px;
    font-weight: 500;
    color: hsl(var(--muted-foreground));
}

.brand-main {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.025em;
    color: hsl(var(--foreground));
}

.sidebar-sep {
    height: 1px;
    background: hsl(var(--border));
    margin: 0 16px;
}

.sidebar-nav {
    padding: 14px 12px 12px;
    flex: 1;
    overflow-y: auto;
}

.nav-group {
    display: grid;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 12px;
    border: none;
    background: none;
    color: hsl(var(--foreground) / 0.8);
    font-size: var(--font-size-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    width: 100%;
    text-align: left;
    position: relative;
}

.nav-item:hover {
    background: hsl(var(--accent) / 0.9);
    color: hsl(var(--accent-foreground));
}

.nav-item.active {
    background: linear-gradient(90deg, hsl(var(--primary) / 0.14), hsl(var(--primary) / 0.06));
    color: hsl(var(--primary));
    box-shadow: inset 0 0 0 1px hsl(var(--primary) / 0.12);
}

.nav-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: hsl(var(--primary));
}

.nav-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.nav-item .nav-label {
    flex: 1;
}

.nav-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.9;
    display: none;
}

.nav-item.active .nav-dot {
    display: block;
}

.nav-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 1px 7px;
    border-radius: 9999px;
    background: hsl(var(--muted));
    color: hsl(var(--muted-foreground));
    line-height: 1.4;
}

.nav-badge:empty {
    display: none;
}

.nav-item.active .nav-badge {
    background: hsl(var(--primary) / 0.12);
    color: hsl(var(--primary));
}

/* Game-Ops warning badge variant */
.nav-badge.warning-badge {
    background: rgba(244, 63, 94, 0.12);
    color: hsl(var(--destructive));
}

.nav-item.active .nav-badge.warning-badge {
    background: rgba(244, 63, 94, 0.25);
    color: hsl(var(--destructive-foreground));
}

/* ===== Sidebar Info Cards ===== */
.sidebar-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 0 20px 16px;
}

.sidebar-info-card {
    background: hsl(var(--muted) / 0.5);
    border: 1px solid hsl(var(--border));
    border-radius: 16px;
    padding: 10px 12px;
}

.sidebar-info-card .info-label {
    font-size: 10px;
    color: hsl(var(--muted-foreground));
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.sidebar-info-card .info-value {
    font-size: 14px;
    font-weight: 600;
    margin-top: 2px;
    color: hsl(var(--foreground));
}

/* ===== Sidebar Tip / Footer ===== */
.sidebar-tip {
    margin: 16px;
    border-radius: 16px;
    border: 1px solid hsl(var(--border));
    background: hsl(var(--card));
    padding: 16px;
}

.tip-title {
    font-size: 14px;
    font-weight: 500;
}

.tip-text {
    font-size: 13px;
    color: hsl(var(--muted-foreground));
    margin-top: 4px;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid hsl(var(--border));
}

/* ===== Sidebar Overlay (mobile) ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: hsl(var(--background) / 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.sidebar-overlay.active {
    display: block;
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 40;
    min-height: var(--header-height);
    background: hsl(var(--surface) / 0.78);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid hsl(var(--border));
    padding: 12px var(--shell-gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    border: 1px solid hsl(var(--border));
    background: hsl(var(--background));
    cursor: pointer;
    color: hsl(var(--foreground));
}

.header-title {
    display: block;
    font-size: var(--font-size-xl);
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: hsl(var(--foreground));
}

.header-subtitle {
    display: block;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: hsl(var(--muted-foreground));
    margin-top: 4px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    min-width: 0;
}

.container {
    padding: var(--space-6) var(--shell-gutter) var(--space-8);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* ===== Page System ===== */
.page {
    display: none;
    opacity: 0;
}

.page.active {
    display: block;
    animation: page-fade-in 0.25s ease forwards;
}

@keyframes page-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== Responsive: Tablet ===== */
@media (max-width: 1023px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .header {
        padding: 12px 16px;
    }

    .container {
        padding: 16px;
        max-width: none;
    }
}