:root {
    --ai-sidebar-width: 240px;
    --ai-sidebar-collapsed-width: 60px;
    --ai-sidebar-bg: #2b2b2b;
    --ai-sidebar-text: #b0b0b0;
    --ai-sidebar-text-hover: #ffffff;
    --ai-sidebar-active-bg: rgba(255, 255, 255, 0.1);
    --ai-sidebar-active-text: #ffffff;
    --ai-sidebar-border: rgba(255, 255, 255, 0.08);
    --ai-sidebar-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --ai-content-bg: transparent;
    --ai-mobile-header-height: 50px;
    --ai-accent: #5cb85c;
}

.ai-studio-wrapper {
    display: flex;
    min-height: calc(100vh - 56px);
    position: relative;
}

/* ===== Sidebar ===== */
.ai-sidebar {
    width: var(--ai-sidebar-width);
    min-width: var(--ai-sidebar-width);
    background: var(--ai-sidebar-bg);
    display: flex;
    flex-direction: column;
    transition: width var(--ai-sidebar-transition), min-width var(--ai-sidebar-transition);
    overflow: hidden;
    z-index: auto;
}

.ai-sidebar.collapsed {
    width: var(--ai-sidebar-collapsed-width);
    min-width: var(--ai-sidebar-collapsed-width);
}

.ai-sidebar .ai-sidebar-text {
    white-space: nowrap;
    opacity: 1;
    transition: opacity var(--ai-sidebar-transition);
}

.ai-sidebar.collapsed .ai-sidebar-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

/* ===== Sidebar Header ===== */
.ai-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--ai-sidebar-border);
    min-height: 46px;
}

.ai-sidebar-header-text {
    color: var(--ai-sidebar-text);
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.ai-sidebar-header-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: none;
    color: var(--ai-sidebar-text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    flex-shrink: 0;
}

.ai-sidebar-header-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--ai-sidebar-text-hover);
}

.ai-sidebar.collapsed .ai-sidebar-header {
    justify-content: center;
    padding: 10px 0;
}

.ai-sidebar-close {
    background: none;
    border: none;
    color: var(--ai-sidebar-text);
    font-size: 1.1rem;
    padding: 4px 8px;
    cursor: pointer;
}

.ai-sidebar-close:hover {
    color: var(--ai-sidebar-text-hover);
}

/* ===== Sidebar Nav ===== */
.ai-sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    overflow-y: auto;
    overflow-x: hidden;
}

.ai-sidebar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--ai-sidebar-text);
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 2px;
    transition: background 0.15s, color 0.15s;
    cursor: pointer;
}

.ai-sidebar-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--ai-sidebar-text-hover);
    text-decoration: none;
}

.ai-sidebar-item.active {
    background: var(--ai-sidebar-active-bg);
    color: var(--ai-sidebar-active-text);
}

.ai-sidebar-item.active:hover {
    color: var(--ai-sidebar-active-text);
}

.ai-sidebar-item.disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ai-sidebar-item.disabled:hover {
    background: none;
    color: var(--ai-sidebar-text);
}

.ai-sidebar-item i {
    font-size: 1.05rem;
    flex-shrink: 0;
    width: 28px;
    text-align: center;
}

.ai-sidebar-badge {
    margin-left: auto;
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    color: #aaa;
}

.ai-sidebar-badge-new {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    background: #dc3545;
    color: #fff;
    line-height: 1.2;
    min-width: 20px;
    text-align: center;
}

.ai-sidebar-divider {
    height: 1px;
    background: var(--ai-sidebar-border);
    margin: 8px 12px;
}


/* ===== Main Content ===== */
.ai-main-content {
    flex: 1;
    min-width: 0;
    background: var(--ai-content-bg);
    display: flex;
    flex-direction: column;
}

.ai-content-inner {
    padding: 0;
    background: var(--ws-surface);
}

.ai-content-inner > .container,
.ai-content-inner > .container-fluid {
    max-width: 100%;
    padding-left: 20px;
    padding-right: 20px;
}

/* ===== Mobile Header ===== */
.ai-mobile-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: #ffffff;
    border-bottom: 1px solid #e5e5ea;
    height: var(--ai-mobile-header-height);
}

.ai-mobile-toggle {
    background: none;
    border: none;
    color: #333;
    font-size: 1.2rem;
    padding: 4px 8px;
    cursor: pointer;
}

.ai-mobile-title {
    font-weight: 600;
    font-size: 1rem;
    color: #333;
}

/* ===== Overlay ===== */
.ai-sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1035;
}

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

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
    .ai-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: var(--ai-sidebar-width) !important;
        min-width: var(--ai-sidebar-width) !important;
        transform: translateX(-100%);
        transition: transform var(--ai-sidebar-transition);
        z-index: 1045;
    }

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

    .ai-sidebar.collapsed {
        width: var(--ai-sidebar-width) !important;
        min-width: var(--ai-sidebar-width) !important;
    }

    .ai-sidebar.collapsed .ai-sidebar-text {
        opacity: 1;
        width: auto;
        overflow: visible;
    }

    .ai-content-inner {
        padding: 0;
    }
}

@media (min-width: 992px) {
    .ai-sidebar-overlay {
        display: none !important;
    }
}

/* ===== Collapsed tooltip on hover (desktop) ===== */
@media (min-width: 992px) {
    .ai-sidebar.collapsed .ai-sidebar-item {
        position: relative;
        justify-content: center;
        padding: 10px 0;
    }

    .ai-sidebar.collapsed .ai-sidebar-item i {
        width: auto;
    }

    .ai-sidebar.collapsed .ai-sidebar-logo {
        justify-content: center;
    }

    .ai-sidebar.collapsed .ai-sidebar-logo i {
        width: auto;
    }

    .ai-sidebar.collapsed .ai-sidebar-toggle {
        justify-content: center;
        padding: 10px 0;
    }

    .ai-sidebar.collapsed .ai-sidebar-toggle i {
        width: auto;
    }

    .ai-sidebar.collapsed .ai-sidebar-badge,
    .ai-sidebar.collapsed .ai-sidebar-badge-new {
        display: none;
    }

    .ai-sidebar.collapsed .ai-sidebar-header {
        justify-content: center;
        padding: 16px 8px;
    }
}