:root {
    --sidebar-width-expanded: 256px;
    --sidebar-width-collapsed: 72px;
    --header-height: 64px;
    --transition-speed: 0.3s;
    --sidebar-bg: #f0f4f9;
    /* Gemini-like cool gray */
    /* Gemini-like light gray */
    --hover-bg: #e1e5ea;
    --text-color: #444746;
    --active-bg: #d3e3fd;
    /* Light blue accent */
    --active-text: #001d35;
}

/* Material Symbols Font Definition */
.material-symbols-outlined {
    font-family: 'Material Symbols Outlined';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    /* Preferred icon size */
    display: inline-block;
    line-height: 1;
    text-transform: none;
    letter-spacing: normal;
    word-wrap: normal;
    white-space: nowrap;
    direction: ltr;
}

/* Global Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    width: 100%;
    height: 100vh;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    /* Prevent ANY child from causing scrollbars/overflow */
}

/* --- Sidebar --- */
.sidebar {
    background-color: var(--sidebar-bg);
    height: 100%;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width var(--transition-speed) ease;
    border-right: 1px solid var(--border);
    /* reusing --border from style.css if available or fallback */
    z-index: 100;
}

.sidebar.expanded {
    width: var(--sidebar-width-expanded);
}

.sidebar:not(.expanded) {
    width: var(--sidebar-width-collapsed);
}

.sidebar-header {
    height: 48px;
    display: flex;
    align-items: center;
    /* Match the padding of .nav-links li (0 16px) to align icon perfectly */
    padding: 0 16px;
    /* Remove justify-content: center to allow left alignment in expanded mode */
}

/* Collapsed state needs centering */
/* Collapsed state needs centering */
.sidebar:not(.expanded) .sidebar-header {
    justify-content: center;
    padding: 0;
    /* Remove padding strictly */
    height: 48px;
    /* Maintain height */
    width: 100%;
}

/* Ensure hamburger centers exactly like list items */
.sidebar:not(.expanded) .sidebar-header .icon-btn {
    margin-left: auto;
    margin-right: auto;
}

.sidebar-header .icon-btn {
    width: 40px;
    /* Match list item height for visual rhythm, or slightly smaller */
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    /* Ensure circular */
}

/* Ensure the icon inside is sized correctly */
.sidebar-header .icon-btn .material-symbols-outlined {
    font-size: 20px;
    /* Reduced from 24px to match other icons */
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background-color: var(--hover-bg);
}

.sidebar-content {
    flex: 1;
    overflow: hidden;
    /* Prevent double scrollbars, let children scroll */
    padding: 12px;
    display: flex;
    flex-direction: column;
}

.build-stamp {
    padding: 8px 16px 4px;
    font-size: 0.72rem;
    color: var(--text-secondary);
    opacity: 0.75;
    letter-spacing: 0.02em;
    user-select: none;
}

.sidebar:not(.expanded) .build-stamp {
    display: none;
}

/* Ensure projects list takes available space and scrolls */
.projects-list {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
    /* Important for flex child scrolling */
    margin-bottom: 12px;
    /* Space before settings */
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    /* Removed flex-direction column here because now sidebar-content handles the main layout */
}

.nav-links li {
    display: flex;
    align-items: center;
    padding: 0 16px;
    /* Padding for the inner content */
    height: 40px;
    /* Reducded height from 48px */
    border-radius: 20px;
    /* Adjusted radius */
    cursor: pointer;
    color: var(--text-color);
    margin-bottom: 4px;
    transition: background-color 0.2s;
    white-space: nowrap;
    overflow: hidden;
    font-size: 0.8rem;
    /* Reduced to 0.8rem */
}

.nav-links li:hover {
    background-color: var(--hover-bg);
}

.nav-links li.active {
    background-color: var(--active-bg);
    color: var(--active-text);
    font-weight: 500;
}

.nav-links li.disabled {
    opacity: 0.5;
    cursor: default;
}

.nav-links li.disabled:hover {
    background: none;
}

.nav-links li .material-symbols-outlined {
    font-size: 20px;
    /* Reverted to 20px */
    margin-right: 12px;
    flex-shrink: 0;
}

.nav-links li .link-text {
    opacity: 1;
    transition: opacity 0.2s;
}

/* Collapsed State Overrides */
.sidebar:not(.expanded) .nav-links li {
    padding: 0;
    justify-content: center;
    width: 40px;
    /* Ensure square-ish clickable area */
    margin-left: auto;
    margin-right: auto;
}

.sidebar:not(.expanded) .nav-links li .material-symbols-outlined {
    margin-right: 0;
}

.sidebar:not(.expanded) .link-text {
    opacity: 0;
    width: 0;
    display: none;
}

/* Hide Separator in Collapsed State */
.sidebar:not(.expanded) .separator {
    display: none !important;
}

.sidebar:not(.expanded) .sidebar-header {
    justify-content: center;
    padding: 12px 0;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    overflow: auto;
    /* Handle both vertical and horizontal overflow */
    height: 100vh;
    background-color: #fff;
    /* Optional: add some padding if needed, but views might handle their own */
}

/* Floating hamburger button (created by JS, lives outside sidebar) */
#mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 4px;
    left: 16px;
    z-index: 10001;
    width: 40px;
    height: 40px;
    padding: 0;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    line-height: 1;
}

#mobile-menu-toggle .material-symbols-outlined {
    font-size: 20px;
}

@media (max-width: 600px) {
    .main-content {
        margin-left: 0;
    }
}


/* --- Mobile Responsiveness --- */
@media (max-width: 600px) {
    .sidebar {
        position: fixed;
        /* When expanded, it covers content. When collapsed, it sits on left? 
           Actually, usually mobile sidebars are drawers. 
           User wants: "Always piece of sidebar visible".
           So we keep it logical: 
           Collapsed = 72px visible. 
           Expanded = 256px (overlay or push).
        */
        z-index: 1000;
        height: 100vh;
    }

    .sidebar:not(.expanded) {
        width: 0;
        overflow: hidden;
        border-right: none;
    }

    .sidebar.expanded {
        width: var(--sidebar-width-expanded);
        box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
    }

    /* We need a simplified toggle logic for mobile 
       Actually, the logic: "expanded" class means visible on mobile.
       "not expanded" means hidden. 
    */

    /* Overlay for mobile when sidebar is open */
    .app-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
        z-index: 99;
        display: none;
    }

    body.sidebar-open .app-overlay {
        display: block;
    }

    /* Show floating toggle on mobile when sidebar is NOT open */
    #mobile-menu-toggle {
        display: flex;
    }

    /* Hide floating toggle when sidebar is expanded (sidebar's own toggle takes over) */
    body.sidebar-open #mobile-menu-toggle {
        display: none;
    }

    /* Long-press on project items should not select text on mobile */
    .projects-list li,
    .projects-list .project-content,
    .projects-list .link-text {
        user-select: none;
        -webkit-user-select: none;
        -webkit-touch-callout: none;
    }
}

/* Adjustments for existing CSS inputs/cards to fit new layout */
.wrap {
    max-width: 1000px;
    margin: 0;
    /* Limit width inside the main panel */
}

/* --- Projects List Customization --- */
.projects-list li.local .link-text {
    color: var(--meta);
}

.projects-list li {
    display: flex;
    /* Use flexbox for the list item itself */
    justify-content: flex-start;
    align-items: center;
    padding-right: 2px;
    /* Space on right */
}

.projects-list li:hover:not(.active) {
    background-color: var(--hover-bg);
}

.project-content {
    display: flex;
    align-items: center;
    flex: 1;
    /* Take remaining space */
    min-width: 0;
    /* Allow shrinking/truncation */
    overflow: hidden;
    height: 100%;
}

/* Collapsed State: Center the project icon */
.sidebar:not(.expanded) .projects-list li {
    justify-content: center;
    /* Center the content */
    padding: 0;
    /* Remove padding */
    width: 40px;
    /* Fixed width */
    margin: 0 auto 4px auto;
    /* Center horizontally */
}

.sidebar:not(.expanded) .project-content {
    justify-content: center;
    /* Center icon inside wrapper */
    flex: 0 0 auto;
    /* Don't stretch */
    width: 100%;
}

.sidebar:not(.expanded) .project-content .link-text {
    display: none;
    /* Already hidden by general rule, but ensuring */
}

.project-menu-btn {
    background: none;
    border: none;
    cursor: pointer;

    /* Strict dimensions for circle */
    width: 28px;
    height: 28px;
    min-width: 28px;
    /* Prevent crushing */
    padding: 0;

    border-radius: 50%;
    color: #444746;

    display: none;
    align-items: center;
    justify-content: center;

    margin-left: auto;
    margin-right: -2px;
    flex-shrink: 0;
    /* Don't shrink */

    transition: background-color 0.2s, color 0.2s;
}

.project-menu-btn:hover {
    background-color: #cfd6e0;
    color: #111827;
}

/* Reset margin on the icon inside the delete button 
   otherwise .nav-links li .material-symbols-outlined adds 16px margin-right
   causing the button to be wide/oval.
*/
.project-menu-btn .material-symbols-outlined {
    margin-right: 0 !important;
    font-size: 18px !important;
}

/* Show button on hover */
.projects-list li:hover .project-menu-btn,
.projects-list li:focus-within .project-menu-btn {
    display: flex;
}

/* Keep action button available on mobile where no hover exists */
body.mobile .projects-list .project-menu-btn {
    display: flex;
}

/* Hide action button in collapsed sidebar */
.sidebar:not(.expanded) .project-menu-btn {
    display: none !important;
}

.project-action-menu {
    position: fixed;
    min-width: 148px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.16);
    padding: 6px;
    z-index: 12000;
}

.project-action-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    border: none;
    background: transparent;
    border-radius: 8px;
    padding: 10px 10px;
    color: #111827;
    font-size: 0.9rem;
    cursor: pointer;
}

.project-action-item .material-symbols-outlined {
    margin-right: 0 !important;
    font-size: 18px !important;
}

.project-action-item.delete:hover {
    background: #f3f4f6;
    color: #111827;
}

.project-action-sheet-backdrop {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: stretch;
    background: rgba(15, 23, 42, 0);
    transition: background-color 160ms ease;
    z-index: 13000;
}

.project-action-sheet-backdrop.open {
    background: rgba(15, 23, 42, 0.35);
}

.project-action-sheet {
    width: 100%;
    background: #fff;
    border-radius: 16px 16px 0 0;
    border-top: 1px solid var(--border);
    padding: 8px 12px calc(12px + env(safe-area-inset-bottom));
    box-shadow: 0 -10px 24px rgba(0, 0, 0, 0.18);
    transform: translateY(100%);
    transition: transform 160ms ease;
}

.project-action-sheet.open {
    transform: translateY(0);
}

.project-action-sheet-handle {
    width: 44px;
    height: 5px;
    border-radius: 999px;
    background: #cbd5e1;
    margin: 0 auto 10px;
}

@media (min-width: 601px) {
    .project-action-sheet-backdrop {
        display: none !important;
    }
}