/**
 * WebTAI Layout
 * Header, sidebar, and main content structure
 */

/* ===== APP BODY LAYOUT ===== */
.app-body {
    display: flex;
    padding-top: var(--header-height);
    min-height: 100vh;
}

/* ===== APP HEADER ===== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-header-bg);
    color: var(--color-header-text);
    display: flex;
    align-items: center;
    padding: 0 var(--space-md);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: var(--color-header-text);
    text-decoration: none;

    &:hover {
        color: var(--color-header-text);
    }
}

.logo-icon {
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
}

/* Header Company Badge - shows current company in header */
.header-company-badge {
    display: none; /* Hidden by default on desktop, sidebar has it */
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-header-text);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
    max-width: 200px;
    min-height: 32px;

    &:hover {
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.3);
    }
}

.header-company-code {
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.header-company-name {
    font-weight: var(--font-weight-medium);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.2;
}

.header-company-chevron {
    flex-shrink: 0;
    opacity: 0.7;
}

/* Header Center - Search */
.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 0 var(--space-xl);
}

.header-search {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.header-search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    padding-left: 36px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-header-text);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);

    &::placeholder {
        color: rgba(255, 255, 255, 0.5);
    }

    &:focus {
        outline: none;
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.4);
    }
}

.header-search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: rgba(255, 255, 255, 0.5);
}

/* Header Right - Context & User */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-shrink: 0;
}

.header-context {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--font-size-sm);
}

.context-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
}

.context-badge-label {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-xs);
}

.context-badge-value {
    font-weight: var(--font-weight-medium);
}

/* Mobile menu toggle - hidden by default */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-header-text);
    padding: var(--space-sm);
    cursor: pointer;
    border-radius: var(--radius-md);

    &:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    & svg {
        width: 24px;
        height: 24px;
    }
}

/* ===== USER MENU ===== */
.user-menu {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);

    &:hover {
        background: rgba(255, 255, 255, 0.1);
    }
}

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

.user-info {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.user-name {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

.user-role {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.6);
}

/* User Dropdown */
.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-xs);
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    display: none;
    z-index: 1001;

    &.visible {
        display: block;
    }
}

.dropdown-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.dropdown-header-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.dropdown-header-email {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast);

    &:hover {
        background: var(--color-bg);
    }

    & svg {
        width: 16px;
        height: 16px;
        color: var(--color-text-muted);
    }
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-xs) 0;
}

/* ===== SIDEBAR ===== */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--color-sidebar-bg);
    border-right: 1px solid var(--color-border);
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: width var(--transition-base), transform var(--transition-base);
}

/* Collapsed sidebar (desktop) */
.app-sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

/* Section labels become divider lines when collapsed */
.app-sidebar.collapsed .sidebar-section-label {
    color: transparent;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
}

.app-sidebar.collapsed .sidebar-section-label::after {
    content: '';
    position: absolute;
    left: var(--space-sm);
    right: var(--space-sm);
    top: 50%;
    height: 1px;
    background: var(--color-border);
}

/* Keep sidebar header hidden when collapsed */
.app-sidebar.collapsed .sidebar-header {
    height: 0;
    padding: 0;
    margin: 0;
    border: none;
    overflow: hidden;
}

.app-sidebar.collapsed .nav-section-items {
    display: none !important;
}

.app-sidebar.collapsed:hover .nav-section.expanded .nav-section-items {
    display: block !important;
}

/* Nav items: hide text via transparent color, keep dimensions stable */
.app-sidebar.collapsed .sidebar-nav .nav-item,
.app-sidebar.collapsed .sidebar-nav .nav-section-header {
    color: transparent;
    gap: 0;
    overflow: hidden;
    white-space: nowrap;
    padding: var(--space-sm) 0;
    padding-left: calc((var(--sidebar-collapsed-width) - 18px) / 2 - var(--space-sm));
}

/* Keep icons visible when text is transparent */
.app-sidebar.collapsed .sidebar-nav .nav-item > svg,
.app-sidebar.collapsed .sidebar-nav .nav-section-header > svg:first-child {
    color: var(--color-text-secondary);
}

/* Hover to expand as overlay */
.app-sidebar.collapsed:hover {
    width: var(--sidebar-width);
    box-shadow: var(--shadow-xl);
    z-index: 101;
}

.app-sidebar.collapsed:hover .sidebar-nav .nav-item,
.app-sidebar.collapsed:hover .sidebar-nav .nav-section-header {
    color: var(--color-text-secondary);
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
}

.app-sidebar.collapsed:hover .sidebar-nav .nav-item.active {
    color: var(--color-sidebar-active-text);
}

/* Restore section labels on hover-expand */
.app-sidebar.collapsed:hover .sidebar-section-label {
    color: var(--color-sidebar-section);
}

.app-sidebar.collapsed:hover .sidebar-section-label::after {
    display: none;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

/* Sidebar Header (Company) */
.sidebar-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.company-selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);

    &:hover {
        background: var(--color-bg-alt);
    }
}

.company-icon {
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xs);
    flex-shrink: 0;
}

.company-info {
    flex: 1;
    min-width: 0;
}

.company-name {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.company-code {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.company-chevron {
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-sm);
    overflow-y: auto;
}

/* Single Nav Item */
.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    margin-bottom: var(--space-xs);

    &:hover {
        background: var(--color-sidebar-hover);
        color: var(--color-text);
        text-decoration: none;
    }

    &.active {
        background: var(--color-sidebar-active);
        color: var(--color-sidebar-active-text);
    }

    & svg {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
    }
}

.nav-item-badge {
    margin-left: auto;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: 2px 6px;
    border-radius: var(--radius-full);
}

/* Nav Section (collapsible) */
.nav-section {
    margin-bottom: var(--space-xs);
}

.nav-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    user-select: none;

    &:hover {
        background: var(--color-sidebar-hover);
        color: var(--color-text);
    }

    & svg {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
    }
}

.nav-section-title {
    flex: 1;
}

.nav-section-chevron {
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.nav-section.expanded {
    & .nav-section-chevron {
        transform: rotate(180deg);
    }

    & .nav-section-items {
        display: block;
    }
}

.nav-section-items {
    display: none;
    padding-left: var(--space-lg);
    margin-top: var(--space-xs);

    & .nav-item {
        padding: var(--space-xs) var(--space-md);
        font-weight: var(--font-weight-normal);
    }
}

/* Sidebar Section Label */
.sidebar-section-label {
    padding: var(--space-md) var(--space-md) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-sidebar-section);
}

/* Sidebar Collapse Toggle */
.sidebar-collapse-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: none;
    border: none;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    cursor: pointer;
    flex-shrink: 0;
    transition: background var(--transition-fast), color var(--transition-fast);

    &:hover {
        background: var(--color-sidebar-hover);
        color: var(--color-text);
    }

    & svg {
        width: 18px;
        height: 18px;
        transition: transform var(--transition-fast);
    }
}

/* Flip chevron when collapsed */
.app-sidebar.collapsed .sidebar-collapse-toggle svg {
    transform: rotate(180deg);
}

/* Reset chevron direction on hover-expand */
.app-sidebar.collapsed:hover .sidebar-collapse-toggle svg {
    transform: rotate(0deg);
}

/* Date Selector in Sidebar */
.date-selector {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.date-selector-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.date-selector-input {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background: var(--color-bg-white);

    &:focus {
        outline: none;
        border-color: var(--color-primary);
    }
}

/* ===== MAIN CONTENT ===== */
.app-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-xl);
    max-width: calc(100% - var(--sidebar-width));
    transition: margin-left var(--transition-base), max-width var(--transition-base);
}

/* Content adjusts when sidebar is collapsed */
.app-sidebar.collapsed ~ .app-content {
    margin-left: var(--sidebar-collapsed-width);
    max-width: calc(100% - var(--sidebar-collapsed-width));
}

/* Page Header */
.page-header {
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
}

/* Page Tabs */
.page-tabs {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.page-tab {
    padding: var(--space-md) 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    transition: all var(--transition-fast);

    &:hover {
        color: var(--color-text);
    }

    &.active {
        color: var(--color-text);
        border-bottom-color: var(--color-text);
    }
}

/* Stale Data Warning Banner */
.stale-data-banner {
    position: fixed;
    top: var(--header-height);
    left: var(--sidebar-width);
    right: 0;
    background: var(--color-warning-light);
    border-bottom: 2px solid var(--color-warning);
    padding: var(--space-sm) var(--space-lg);
    z-index: 99;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: slideDown 0.3s ease;
    transition: left var(--transition-base);
}

.sidebar-collapsed .stale-data-banner {
    left: var(--sidebar-collapsed-width);
}


@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.stale-data-banner-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-warning);
}

.stale-data-banner-text {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text);

    & strong {
        color: #92400e;
    }
}

.stale-data-banner-timestamp {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.stale-data-banner-close {
    background: none;
    border: none;
    padding: var(--space-xs);
    cursor: pointer;
    color: var(--color-text-muted);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;

    &:hover {
        background: rgba(0, 0, 0, 0.1);
        color: var(--color-text);
    }
}

/* Adjust content when stale banner is shown */
.app-content.has-stale-banner {
    padding-top: calc(var(--space-xl) + 44px);
}

/* Legacy Mode */
.legacy-mode-link {
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);

    & .nav-item-badge {
        background: #7c3aed;
        font-size: 9px;
        letter-spacing: 0.5px;
    }
}

/* TAI Programs Links in Sidebar */
.nav-item-tai-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 6px;
    background: var(--color-bg-alt, #f3f4f6);
    border: 1px solid var(--color-border-light, #e5e7eb);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    margin-right: var(--space-sm);
}

.nav-item-legacy {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);

    &:hover {
        color: var(--color-text);
    }
}

/* Secondary/muted nav items (TAI Programs links) */
.nav-item-secondary {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    opacity: 0.8;

    &:hover {
        color: var(--color-text);
        opacity: 1;
    }
}