/**
 * C4-AI Dashboard - Layout Styles
 * Phase 9.1: Foundation
 * 
 * Sidebar, header, and main content layout
 */

/* ==========================================
   DASHBOARD LAYOUT
   ========================================== */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* ==========================================
   SIDEBAR
   ========================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    z-index: var(--z-sidebar);
    transition: width var(--transition-normal), transform var(--transition-normal);
    overflow: hidden;
}

.rtl .sidebar {
    left: auto;
    right: 0;
}

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

.sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: var(--spacing-lg);
}

/* Sidebar Logo */
.sidebar-logo {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-xl);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: white;
    text-decoration: none;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
    white-space: nowrap;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.sidebar-collapse-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--sidebar-text);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sidebar-collapse-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.sidebar.collapsed .sidebar-collapse-btn svg {
    transform: rotate(180deg);
}

.rtl .sidebar-collapse-btn svg {
    transform: rotate(180deg);
}

.rtl .sidebar.collapsed .sidebar-collapse-btn svg {
    transform: rotate(0deg);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-section {
    margin-bottom: var(--spacing-xl);
}

.nav-section-title {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-gray-500);
    white-space: nowrap;
}

.sidebar.collapsed .nav-section-title {
    text-align: center;
    padding: var(--spacing-sm);
}

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

.nav-item {
    margin-bottom: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-md);
    color: var(--sidebar-text);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--sidebar-text-hover);
}

.nav-link.active {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-active-text);
}

.nav-link svg {
    flex-shrink: 0;
}

.nav-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar.collapsed .nav-text {
    display: none;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: var(--spacing-md);
}

/* Sidebar Tooltips (collapsed state) */
.sidebar.collapsed .nav-link[data-tooltip] {
    position: relative;
}

.sidebar.collapsed .nav-link[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-left: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-800);
    color: white;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    white-space: nowrap;
    z-index: 1000;
}

.rtl .sidebar.collapsed .nav-link[data-tooltip]:hover::after {
    left: auto;
    right: 100%;
    margin-left: 0;
    margin-right: var(--spacing-md);
}

/* Sidebar Footer */
.sidebar-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logout-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-md);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sidebar-logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.sidebar.collapsed .sidebar-logout-btn {
    justify-content: center;
}

.sidebar.collapsed .sidebar-logout-btn .nav-text {
    display: none;
}

/* ==========================================
   MAIN CONTENT
   ========================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-normal);
}

.rtl .main-content {
    margin-left: 0;
    margin-right: var(--sidebar-width);
}

.dashboard-layout[data-collapsed="true"] .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.rtl .dashboard-layout[data-collapsed="true"] .main-content {
    margin-left: 0;
    margin-right: var(--sidebar-collapsed-width);
}

/* ==========================================
   HEADER
   ========================================== */
.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--header-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-header);
}

.header-inner {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-2xl);
    gap: var(--spacing-lg);
}

.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
}

.mobile-menu-btn:hover {
    background: var(--color-gray-100);
}

.header-title {
    flex: 1;
}

.header-title h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-800);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Subscription Badge */
.subscription-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.subscription-badge .badge-icon {
    font-size: 14px;
}

/* Notification Bell (Phase 9.2) */
.notification-bell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.notification-bell:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-800);
}

.notification-count {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--color-error);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.rtl .notification-count {
    right: auto;
    left: 4px;
}

/* Language Switcher */
.lang-switch-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-width: 80px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-50) 100%);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.lang-switch-btn:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-gray-100) 100%);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: scale(1.02);
}

.lang-switch-btn .lang-code {
    font-weight: 700;
    color: var(--color-primary);
}

.lang-switch-btn .lang-switch-arrow {
    color: var(--color-gray-400);
    font-size: 12px;
}

.lang-switch-btn .lang-target {
    color: var(--color-gray-500);
}

.lang-switch-btn:hover .lang-target {
    color: var(--color-primary);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.user-menu-btn:hover {
    background: var(--color-gray-100);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.user-email {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.rtl .user-menu-dropdown {
    right: auto;
    left: 0;
}

.user-menu-dropdown.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-gray-50);
}

.dropdown-item svg {
    color: var(--color-gray-400);
    width: 18px;
    height: 18px;
}

.dropdown-divider {
    margin: var(--spacing-sm) 0;
    border: none;
    border-top: 1px solid var(--color-border);
}

.logout-item:hover {
    color: var(--color-error);
}

.logout-item:hover svg {
    color: var(--color-error);
}

/* ==========================================
   PAGE CONTENT
   ========================================== */
.page-wrapper {
    flex: 1;
    padding: var(--spacing-2xl);
    padding-bottom: 60px;
    overflow: visible;
}

.page-content {
    max-width: 1400px;
    margin: 0 auto;
    overflow: visible;
}

/* ==========================================
   MOBILE SIDEBAR OVERLAY
   ========================================== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-sidebar) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}