/**
 * Navigation Components CSS
 * Material Design 3 navigation for Social Tap Analytics
 */

/* ===== SIDEBAR NAVIGATION ===== */
.sidebar-nav {
    width: 280px;
    background: var(--surface);
    border-right: 1px solid var(--outline-variant);
    padding: var(--spacing-lg) 0;
    overflow-y: auto;
    height: 100vh;
    position: sticky;
    top: 0;
}

/* Navigation Brand */
.nav-brand {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--outline-variant);
}

.nav-logo {
    width: 36px;
    height: 36px;
    margin-right: var(--spacing-md);
    background: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.nav-brand-text {
    font: var(--title-large);
    color: var(--on-surface);
    font-weight: 500;
}

/* Navigation Sections */
.nav-section {
    margin-bottom: var(--spacing-xl);
}

.nav-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.nav-section-label {
    font: var(--label-small);
    color: var(--on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.nav-section-help-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    color: var(--on-surface-variant);
    transition: all 0.2s ease;
    text-decoration: none;
    opacity: 0.7;
}

.nav-section-help-link:hover {
    opacity: 1;
    background: var(--surface-variant);
    color: var(--primary);
}

.nav-section-help-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    opacity: 1;
}

/* Navigation Items */
.nav-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--on-surface);
    text-decoration: none;
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
    margin-right: var(--spacing-md);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.nav-item:hover {
    background: var(--primary-container);
    color: var(--on-primary-container);
}

.nav-item:hover::before {
    transform: scaleY(1);
}

.nav-item.active {
    background: var(--primary-container);
    color: var(--on-primary-container);
    font-weight: 500;
}

.nav-item.active::before {
    transform: scaleY(1);
}

.nav-icon {
    margin-right: var(--spacing-md);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    opacity: 0.8;
}

.nav-item:hover .nav-icon,
.nav-item.active .nav-icon {
    opacity: 1;
}

/* Navigation Badge for notifications/counts */
.nav-badge {
    margin-left: auto;
    background: var(--error);
    color: var(--on-error);
    font: var(--label-small);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    min-width: 18px;
    text-align: center;
    font-weight: 500;
}

/* ===== TOP NAVIGATION ===== */
.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 var(--spacing-lg);
    background: var(--surface);
    border-bottom: 1px solid var(--outline-variant);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-title {
    font: var(--title-large);
    color: var(--on-surface);
    margin: 0;
}

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

/* Mobile Navigation Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--on-surface);
    transition: background-color 0.2s ease;
}

.mobile-nav-toggle:hover {
    background: var(--surface-variant);
}

.mobile-nav-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== DATE RANGE SELECTOR ===== */
.date-range-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--surface-variant);
    border-radius: var(--radius-sm);
}

.date-range-selector input[type="date"] {
    border: none;
    background: transparent;
    font: var(--body-medium);
    color: var(--on-surface-variant);
    padding: var(--spacing-xs);
}

.date-range-selector span {
    font: var(--body-medium);
    color: var(--on-surface-variant);
}

/* ===== LOCATION FILTER ===== */
.location-filter {
    min-width: 160px;
}

.select-control {
    background: var(--surface);
    border: 1px solid var(--outline);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font: var(--body-medium);
    color: var(--on-surface);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.select-control:hover {
    border-color: var(--on-surface);
}

.select-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(139, 69, 19, 0.2);
}

/* ===== USER MENU ===== */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: var(--on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font: var(--title-medium);
    cursor: pointer;
    transition: all 0.2s ease;
}

.user-avatar:hover {
    box-shadow: var(--elevation-1);
    transform: scale(1.05);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    box-shadow: var(--elevation-2);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--on-surface);
    text-decoration: none;
    font: var(--body-medium);
    transition: background-color 0.2s ease;
}

.dropdown-item:hover {
    background: var(--surface-variant);
}

.dropdown-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.dropdown-divider {
    height: 1px;
    background: var(--outline-variant);
    margin: var(--spacing-xs) 0;
}

/* ===== BREADCRUMB NAVIGATION ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
    padding: 0;
    list-style: none;
}

.breadcrumb-item {
    font: var(--body-medium);
    color: var(--on-surface-variant);
}

.breadcrumb-item a {
    color: var(--on-surface-variant);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-item a:hover,
.breadcrumb-item a:focus {
    color: var(--primary);
}

.breadcrumb-item.current {
    color: var(--on-surface);
    font-weight: 500;
}

.breadcrumb-separator {
    color: var(--on-surface-variant);
    font-size: 12px;
}

.breadcrumb-separator::before {
    content: '›';
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 960px) {
    .mobile-nav-toggle {
        display: block;
    }

    .sidebar-nav {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s ease;
        box-shadow: var(--elevation-3);
    }

    .sidebar-nav.open {
        left: 0;
    }

    .top-nav {
        padding: 0 var(--spacing-md);
    }

    .nav-actions {
        gap: var(--spacing-sm);
    }

    .date-range-selector {
        display: none;
    }

    .nav-title {
        font: var(--title-medium);
    }
}

@media (max-width: 600px) {
    .top-nav {
        padding: 0 var(--spacing-sm);
    }

    .nav-actions {
        gap: var(--spacing-xs);
    }

    .location-filter {
        min-width: 120px;
    }

    .select-control {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 14px;
    }

    .user-avatar {
        width: 36px;
        height: 36px;
    }

    .user-dropdown {
        right: -20px;
        min-width: 180px;
    }
}

/* ===== NAVIGATION ANIMATIONS ===== */
.nav-item {
    position: relative;
    overflow: hidden;
}

.nav-item::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.nav-item:hover::after,
.nav-item.active::after {
    transform: scaleX(1);
}

/* Sidebar slide animation */
@keyframes slideInLeft {
    0% {
        transform: translateX(-100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutLeft {
    0% {
        transform: translateX(0);
        opacity: 1;
    }
    100% {
        transform: translateX(-100%);
        opacity: 0;
    }
}

.sidebar-nav.entering {
    animation: slideInLeft 0.3s ease-out;
}

.sidebar-nav.exiting {
    animation: slideOutLeft 0.3s ease-out;
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
.nav-item:focus,
.focusable:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-xs);
}

.nav-item.focusable:focus {
    outline-offset: -2px;
}

.mobile-nav-toggle[aria-expanded="true"] .nav-icon {
    transform: rotate(90deg);
}

/* Screen reader announcements */
.nav-status {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* High contrast support */
@media (prefers-contrast: high) {
    .nav-item {
        border: 1px solid transparent;
    }

    .nav-item:hover,
    .nav-item.active {
        border-color: var(--on-surface);
    }

    .sidebar-nav {
        border-right: 2px solid var(--on-surface);
    }

    .top-nav {
        border-bottom: 2px solid var(--on-surface);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .nav-item,
    .sidebar-nav,
    .user-dropdown,
    .mobile-nav-toggle {
        transition: none;
    }

    .nav-item::before,
    .nav-item::after {
        transition: none;
    }

    .sidebar-nav.entering,
    .sidebar-nav.exiting {
        animation: none;
    }
}