/* =============================================================================
   DESPAIR BOT — Layout CSS
   Sidebar + main content area layout.
   ============================================================================= */

/* --- App Shell --- */
.app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand h1 {
    font-family: var(--text-display);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 0.15em;
    color: var(--accent-cyan);
    text-transform: uppercase;
}

.sidebar-brand .brand-subtitle {
    font-family: var(--text-mono);
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
    letter-spacing: 0.05em;
}

/* --- Navigation --- */
.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.nav-section {
    padding: 0 0.75rem;
    margin-bottom: 1.5rem;
}

.nav-section-title {
    font-family: var(--text-mono);
    font-size: 0.65rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0 0.75rem;
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav-link:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border-left: 2px solid var(--accent-cyan);
}

.nav-link svg,
.nav-link .nav-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.7;
}

.nav-link.active svg,
.nav-link.active .nav-icon {
    opacity: 1;
}

/* --- Sidebar Footer --- */
.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

.sidebar-footer .version {
    font-family: var(--text-mono);
    font-size: 0.65rem;
    color: var(--text-tertiary);
}

.sidebar-footer .logout-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    transition: color var(--transition-fast);
}

.sidebar-footer .logout-link:hover {
    color: var(--accent-danger);
}

/* --- Main Content --- */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    padding: 2rem;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: 1.5rem;
}

.page-header .header-actions {
    display: flex;
    gap: 0.75rem;
}

/* --- Content Grid --- */
.content-grid {
    display: grid;
    gap: 1.5rem;
}

.content-grid.cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.content-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.content-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* --- Responsive (Mobile) --- */
@media (max-width: 768px) {
    .app-shell {
        grid-template-columns: 60px 1fr;
    }

    .sidebar {
        width: 60px;
    }

    .sidebar-brand h1 {
        font-size: 0.8rem;
        letter-spacing: 0;
    }

    .sidebar-brand .brand-subtitle {
        display: none;
    }

    .nav-link span {
        display: none;
    }

    .nav-link {
        justify-content: center;
        padding: 0.75rem;
    }

    .sidebar-footer .version,
    .sidebar-footer .logout-link span {
        display: none;
    }

    .main-content {
        margin-left: 60px;
        padding: 1rem;
    }

    .content-grid.cols-2,
    .content-grid.cols-3,
    .content-grid.cols-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .content-grid.cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Login Layout (no sidebar) --- */
.login-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}