/* ============================================================
   Shared sidebar — included by all tool pages
   ============================================================ */

.app-layout {
    display: flex;
    flex: 1;
    width: 100%;
}

/* ---- Sidebar ---- */
.sidebar {
    width: 270px;
    flex-shrink: 0;
    border-right: 1px solid var(--border);
    padding: 20px 12px;
    position: sticky;
    top: 68px;
    height: calc(100vh - 68px);
    overflow-y: auto;
    transition: width 0.2s ease, padding 0.2s ease;
    display: flex;
    flex-direction: column;
}
.sidebar.collapsed {
    width: 44px;
    padding: 12px 4px;
}
.sidebar.collapsed .sidebar-title,
.sidebar.collapsed .sidebar-nav .label,
.sidebar.collapsed .sidebar-nav .count,
.sidebar.collapsed .sidebar-bottom-text {
    display: none;
}
.sidebar.collapsed .sidebar-nav li a {
    justify-content: center;
    padding: 8px 0;
}
.sidebar.collapsed .sidebar-nav .icon {
    width: auto;
    font-size: 1rem;
}
.sidebar.collapsed .sidebar-divider {
    margin: 12px 4px;
}
.sidebar.collapsed .collapse-btn .collapse-label {
    display: none;
}

/* Category toggle */
.sb-category { margin-bottom: 4px; }
.sb-cat-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    padding: 6px 12px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 700;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: color 0.12s;
}
.sb-cat-toggle:hover { color: var(--text); }
.sb-cat-count {
    font-size: 0.6rem;
    padding: 1px 6px;
    background: var(--bg-elev, #121520);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-weight: 700;
    letter-spacing: 0;
}
.sb-cat-arrow {
    margin-left: auto;
    font-size: 0.7rem;
    transition: transform 0.15s;
}
.sb-category:not(.open) .sb-cat-arrow { transform: rotate(-90deg); }
.sb-category:not(.open) .sb-cat-items,
.sb-category:not(.open) .sb-fav-empty { display: none; }

.sidebar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 4px;
}

/* Hide labels in collapsed sidebar */
.sidebar.collapsed .sb-cat-toggle { justify-content: center; padding: 6px 0; }
.sidebar.collapsed .sb-cat-label,
.sidebar.collapsed .sb-cat-count,
.sidebar.collapsed .sb-cat-arrow { display: none; }
.sidebar.collapsed .sb-cat-items { display: flex !important; } /* always show items when collapsed (icon-only) */
.sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.12s ease;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
}
.sidebar-nav li a:hover {
    background: var(--bg-card, #161a27);
    color: var(--text);
    text-decoration: none;
}
.sidebar-nav li a.active {
    background: var(--accent-soft, rgba(59,130,246,.12));
    color: var(--accent, #3b82f6);
    font-weight: 600;
}
.sidebar-nav .icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}
.sidebar-nav .count {
    margin-left: auto;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    background: var(--bg-elev, #121520);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-muted);
}
/* divider no longer used — categories have their own spacing */

/* Hamburger toggle in header handles both desktop collapse + mobile open */

/* ---- Main content area (each page fills this) ---- */
.app-layout > .main {
    flex: 1;
    min-width: 0;
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        width: 280px !important;
        height: calc(100vh - 56px);
        background: var(--bg);
        z-index: 90;
        border-right: 1px solid var(--border);
        box-shadow: 8px 0 30px rgba(0, 0, 0, 0.3);
        padding: 20px 12px !important;
    }
    .sidebar.collapsed { width: 280px !important; }
    .sidebar.collapsed .sidebar-title,
    .sidebar.collapsed .sidebar-nav .label,
    .sidebar.collapsed .sidebar-nav .count,
    .sidebar.collapsed .sidebar-bottom-text { display: unset; }
    .sidebar.collapsed .sidebar-nav li a { justify-content: flex-start; padding: 10px 12px; }
    .sidebar.open { display: flex; }
}

/* Favorites category */
.sb-category-fav {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}
.sb-category-fav .sb-cat-label { color: #f59e0b; font-weight: 700; }
.sb-category-fav .sb-cat-count {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.3);
}

/* Favorites empty state */
.sb-fav-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 8px 6px 4px;
    padding: 18px 14px;
    background: rgba(245, 158, 11, 0.04);
    border: 1px dashed rgba(245, 158, 11, 0.25);
    border-radius: 10px;
    text-align: center;
}
.sb-fav-empty-icon {
    font-size: 1.6rem;
    line-height: 1;
    opacity: 0.75;
}
.sb-fav-empty-text {
    font-size: 0.78rem;
    line-height: 1.45;
    color: var(--text-muted);
}
.sb-fav-empty-text span { display: block; margin-top: 2px; opacity: 0.8; font-size: 0.72rem; }
.sb-fav-signin-btn { margin-top: 6px; }
.sidebar.collapsed .sb-fav-empty { display: none; }