/**
 * Portfolio Manager - Layout Styles
 * Header, Sidebar, Content Area Structure
 */

/* ============================================
   HEADER (60px fixed)
   ============================================ */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border-default);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-6);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-xs);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* User menu styles are now in UserMenu.php component */

/* ============================================
   APP CONTAINER (below header)
   ============================================ */
.app-container {
    display: flex;
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

/* ============================================
   SIDEBAR (220px fixed) - Light Theme
   ============================================ */
.app-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--color-bg-card);
    border-right: 1px solid var(--color-border-default);
    overflow-y: auto;
}

.sidebar-nav {
    padding: var(--space-4) 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin: 0;
}

.sidebar-nav a {
    display: block;
    padding: var(--space-3) var(--space-6);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background-color: var(--color-bg-accent);
    color: var(--color-primary);
}

.sidebar-nav a.active {
    background-color: var(--color-bg-accent);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.sidebar-separator {
    height: 1px;
    background: var(--color-border-default);
    margin: var(--space-4) var(--space-6);
}

/* ============================================
   CONTENT AREA (fluid with 24px padding)
   ============================================ */
.app-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--content-padding);
    min-height: calc(100vh - var(--header-height));
    background-color: var(--color-bg-page);
}

/* ============================================
   SIDEBAR TOGGLE (for responsive)
   ============================================ */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: calc(var(--header-height) + var(--space-4));
    left: 0;
    width: 28px;
    height: 48px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-default);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    cursor: pointer;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-sm);
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--color-bg-accent);
    color: var(--color-primary);
}

.sidebar-toggle svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   RESPONSIVE - Collapsible sidebar
   ============================================ */
@media (max-width: 1279px) {
    .sidebar-toggle {
        display: flex;
        transition: left var(--transition-normal);
    }

    .sidebar-toggle.is-open {
        left: var(--sidebar-width);
    }

    .sidebar-toggle.is-open svg {
        transform: rotate(180deg);
    }

    .app-sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        z-index: calc(var(--z-sticky) + 1);
        box-shadow: var(--shadow-lg);
    }

    .app-sidebar.is-open {
        transform: translateX(0);
    }

    .app-content {
        margin-left: 0;
    }
}