/* ============================================================================
   NAVIGATION - Mobile Drawer + Desktop Sidebar
   Mobile: True drawer pattern with overlay
   Desktop: Flexbox sidebar + content layout
   ============================================================================ */

/* ===========================================================================
   TOP NAVIGATION BAR
   ============================================================================ */

.top-nav {
    background: #1a2c35; /* Always dark, regardless of theme */
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 40;
    box-shadow: var(--shadow-sm);
}

.top-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    height: 56px;
    max-width: 1400px;
    margin: 0 auto;
}

.top-nav__left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

/* Hamburger (mobile only) */
.top-nav__hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: #ffffff;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.top-nav__hamburger:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Logo (desktop only) */
.top-nav__logo {
    display: none;
}

.top-nav__logo img {
    height: 24px;
    display: block;
}

/* Desktop: Show logo, hide hamburger */
@media (min-width: 768px) {
    .top-nav__hamburger {
        display: none;
    }

    .top-nav__logo {
        display: block;
    }
}

/* ===========================================================================
   SEARCH (centre of top nav)
   ============================================================================ */

.top-nav__centre {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 0 var(--space-4);
    min-width: 0;
}

.top-nav__search {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.top-nav__search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.5);
    pointer-events: none;
}

.top-nav__search-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-3) var(--space-2) 36px;
    font-size: var(--text-sm);
    color: #ffffff;
    transition: all 0.2s;
}

.top-nav__search-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.top-nav__search-input:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.top-nav__search-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.top-nav__search-input:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

/* ===========================================================================
   GLOBAL SEARCH MODAL
   ============================================================================ */

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

.global-search__modal {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    right: 0;
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.15s, transform 0.15s;
    pointer-events: none;
}

.global-search__modal--open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Results list */
.global-search__results {
    padding: var(--space-2) 0;
}

/* Individual result item */
.global-search__result {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    transition: background 0.1s;
    text-decoration: none;
    color: inherit;
}

.global-search__result:hover,
.global-search__result--selected {
    background: var(--bg-elev-2);
}

.global-search__result-content {
    flex: 1;
    min-width: 0;
}

.global-search__result-name {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-strong);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.global-search__result-secondary {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Entity type badge */
.global-search__result-type {
    flex-shrink: 0;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    background: var(--bg-elev-3);
    color: var(--text-muted);
    text-transform: capitalize;
}

/* Empty state */
.global-search__empty {
    padding: var(--space-6) var(--space-4);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* Loading state */
.global-search__loading {
    padding: var(--space-6) var(--space-4);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* Keyboard hint */
.global-search__hint {
    padding: var(--space-2) var(--space-4);
    border-top: 1px solid var(--border);
    font-size: var(--text-xs);
    color: var(--text-subtle);
    display: flex;
    gap: var(--space-4);
}

.global-search__hint kbd {
    display: inline-block;
    padding: 1px 4px;
    font-size: 10px;
    font-family: inherit;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    border-radius: 3px;
}

/* Mobile: Full screen overlay */
@media (max-width: 767px) {
    .global-search__modal {
        position: fixed;
        top: 56px; /* Below header */
        left: 0;
        right: 0;
        bottom: 0;
        max-height: none;
        border-radius: 0;
        border: none;
        border-top: 1px solid var(--border);
    }

    .global-search__result {
        padding: var(--space-4);
        min-height: 44px; /* Touch target */
    }

    .global-search__hint {
        display: none; /* Hide keyboard hints on mobile */
    }
}

/* ===========================================================================
   RIGHT SECTION (help + user menu)
   ============================================================================ */

.top-nav__right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

/* ===========================================================================
   MOBILE: DRAWER OVERLAY PATTERN (< 768px)
   ============================================================================ */

.drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 45;
    opacity: 0;
    transition: opacity 0.3s;
}

.drawer-overlay--visible {
    display: block;
    opacity: 1;
}

/* Page container: offset for fixed header */
.page-container {
    padding-top: 56px; /* Height of fixed header */
}

/* Mobile: Sidebar as drawer (overlay) */
.sidebar {
    position: fixed;
    left: 0;
    top: 56px;
    bottom: 0;
    width: 220px;
    background: var(--bg-elev-1);
    border-right: 1px solid var(--border);
    z-index: 50;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform 0.3s ease-out;
}

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

/* ===========================================================================
   DESKTOP: FLEXBOX SIDEBAR PATTERN (≥ 768px)
   ============================================================================ */

@media (min-width: 768px) {
    /* Hide mobile overlay */
    .drawer-overlay {
        display: none !important;
    }

    /* Page container: flexbox layout */
    .page-container {
        display: flex;
        max-width: 1400px; /* Same as top nav inner */
        margin: 0 auto;
    }

    /* Sidebar: normal flow, sticky positioning */
    .sidebar {
        position: sticky;
        top: 56px;
        left: auto;
        bottom: auto;
        width: 220px;
        height: calc(100vh - 56px);
        flex-shrink: 0;
        transform: none;
        transition: width 0.3s ease-out, opacity 0.3s ease-out;
        z-index: 10;
        box-shadow: none;
    }

    /* Hidden state on desktop */
    .sidebar--hidden {
        width: 0;
        opacity: 0;
        overflow: hidden;
        border-right: none;
    }

    /* Main content: flex grow */
    main {
        flex: 1;
        min-width: 0; /* Allow flex item to shrink below content size */
        display: flex;
        flex-direction: column;
    }
}

/* ===========================================================================
   SIDEBAR CONTENT STYLES
   ============================================================================ */

/* Sidebar Header (logo on mobile) */
.sidebar__header {
    padding: var(--space-6) var(--space-4);
    border-bottom: 1px solid var(--border);
    background: var(--bg-elev-2);
}

.sidebar__logo {
    height: 28px;
    display: block;
    margin-bottom: var(--space-2);
}

.sidebar__subtitle {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

@media (min-width: 768px) {
    .sidebar__header {
        display: none; /* Logo already in top nav on desktop */
    }
}

/* Sidebar Navigation */
.sidebar__nav {
    padding: var(--space-4) 0;
}

@media (min-width: 768px) {
    .sidebar__nav {
        padding-top: var(--space-2);
    }
}

.sidebar__section-title {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-subtle);
    padding: var(--space-2) var(--space-4);
    margin-top: var(--space-3);
}

.sidebar__section-title:first-child {
    margin-top: 0;
}

.sidebar__link {
    display: block;
    padding: var(--space-2) var(--space-4);
    color: var(--text);
    text-decoration: none;
    font-size: var(--text-base);
    transition: all 0.15s;
    border-left: 3px solid transparent;
}

.sidebar__link:hover {
    background: var(--bg-elev-2);
    color: var(--text-strong);
}

.sidebar__link--active {
    background: var(--bg-elev-2);
    border-left-color: var(--accent-primary-500);
    color: var(--text-strong);
    font-weight: var(--font-medium);
}

.sidebar__link--disabled {
    color: var(--text-subtle);
    cursor: not-allowed;
    opacity: 0.5;
}

.sidebar__link--disabled:hover {
    background: transparent;
    color: var(--text-subtle);
}

/* ===========================================================================
   HELP MENU (right side of top nav)
   ============================================================================ */

.help-menu {
    position: relative;
}

.help-menu__trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: #ffffff;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.help-menu__trigger:hover {
    background: rgba(255, 255, 255, 0.1);
}

.help-menu__trigger svg {
    display: block;
}

.help-menu__dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    width: 180px;
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    opacity: 0;
    transform: translateY(-8px);
    transition: all 0.15s;
    pointer-events: none;
    padding: var(--space-2) 0;
}

.help-menu__dropdown--open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.help-menu__link {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: var(--text);
    text-decoration: none;
    font-size: var(--text-base);
    transition: all 0.15s;
}

.help-menu__link:hover {
    background: var(--bg-elev-2);
    color: var(--text-strong);
}

/* ===========================================================================
   USER MENU (right side of top nav)
   ============================================================================ */

.user-menu {
    position: relative;
}

.user-menu__trigger {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: none;
    border: none;
    color: #ffffff;
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.user-menu__trigger:hover {
    background: rgba(255, 255, 255, 0.1);
}

.user-menu__trigger svg {
    display: block;
    flex-shrink: 0;
}

.user-menu__trigger .user-menu__name {
    display: none;
    color: #ffffff;
    margin: 0;
}

@media (min-width: 640px) {
    .user-menu__trigger .user-menu__name {
        display: block;
    }
}

.user-menu__dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    width: 240px;
    background: var(--bg-elev-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    opacity: 0;
    transform: translateY(-8px);
    transition: all 0.15s;
    pointer-events: none;
}

.user-menu__dropdown--open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.user-menu__header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border);
}

.user-menu__header .user-menu__name {
    display: block;
    font-weight: var(--font-semibold);
    color: var(--text-strong);
    font-size: var(--text-base);
    margin-bottom: var(--space-1);
}

.user-menu__email {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.user-menu__links {
    padding: var(--space-2) 0;
}

.user-menu__link {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: var(--text);
    text-decoration: none;
    font-size: var(--text-base);
    transition: all 0.15s;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.user-menu__link:hover {
    background: var(--bg-elev-2);
    color: var(--text-strong);
}

.user-menu__footer {
    padding: var(--space-2) 0;
    border-top: 1px solid var(--border);
}

.user-menu__link--danger {
    color: var(--status-danger-600);
}

.user-menu__link--danger:hover {
    background: var(--status-danger-100);
    color: var(--status-danger-700);
}