/*
 * Sidebar Styles
 * Apple UI/UX Inspired Design
 */

#gp-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 360px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-primary);
    box-shadow: -10px 0 30px rgba(0,0,0,0.05);
    z-index: 10000;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    -webkit-overflow-scrolling: touch;
}
#gp-sidebar.gp-sidebar-visible {
    transform: translateX(0);
    box-shadow: -10px 0 50px rgba(0,0,0,0.15);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 1;
}

#gp-sidebar .sidebar-header h3 {
    margin: 0 0 15px 0;
    font-size: 1.1em;
    font-weight: 600;
    color: var(--text-heading);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-primary);
}

.sidebar-close {
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.sidebar-close:hover {
    background: var(--border-primary);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.sidebar-content {
    padding: 15px;
}

.sidebar-toc-container,
.sidebar-tools {
    background-color: var(--bg-tertiary);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
}

.sidebar-toc-container h4,
.sidebar-tools h4 {
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin: 0 0 15px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-primary);
}

.sidebar-toc-container ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-toc-container ul li a {
    display: block;
    padding: 12px 0;
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    font-size: 0.95em;
    border-bottom: 1px solid var(--border-primary);
}
.sidebar-toc-container ul li:last-child a {
    border-bottom: none;
}

.sidebar-toc-container ul li a:hover {
    color: var(--text-primary);
}

.sidebar-tool {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 15px;
    margin-bottom: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    font-size: 1em;
    color: var(--text-primary);
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.sidebar-tool:hover {
    background-color: var(--bg-secondary);
    border-color: var(--accent-color);
    transform: scale(1.02);
}

.sidebar-tool:last-child {
    margin-bottom: 0;
}

/* Dark Mode Specific Styles */
html.dark-mode-active #gp-sidebar {
    border-left-color: var(--border-primary);
}
html.dark-mode-active .sidebar-tool {
    background-color: #3a3b3c; /* A bit lighter than main dark bg */
}
html.dark-mode-active .sidebar-tool:hover {
    background-color: #4f5052;
}