/**
 * Breadcrumb Polish - UI/UX Enhancements
 *
 * Features:
 * - Chevron icon separators (>)
 * - Mobile collapse with ellipsis menu
 * - Smooth animations
 * - Truncate long names with ellipsis
 * - Accessible focus states
 */

/* ============================================
   BREADCRUMB ANIMATIONS
   ============================================ */

@keyframes breadcrumb-fade-in {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes breadcrumb-menu-in {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ============================================
   BREADCRUMB CONTAINER
   ============================================ */

.breadcrumb-nav-container {
    display: none;
    background: rgba(var(--color-bg-secondary-rgb, 21, 26, 53), 0.5);
    border-bottom: 1px solid rgba(var(--color-border-primary-rgb, 42, 47, 74), 0.3);
}

.breadcrumb-nav-container.visible {
    display: block;
    animation: breadcrumb-fade-in 0.25s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.breadcrumb-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.625rem 2rem;
}

.breadcrumb-container {
    display: flex;
    align-items: center;
    min-height: 28px;
}

/* ============================================
   BREADCRUMB LIST
   ============================================ */

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.breadcrumb-list--collapsed {
    flex-wrap: nowrap;
}

/* ============================================
   BREADCRUMB ITEM
   ============================================ */

.breadcrumb-item {
    display: inline-flex;
    align-items: center;
    min-width: 0;
}

.breadcrumb-item--current {
    flex-shrink: 1;
    min-width: 0;
}

/* ============================================
   BREADCRUMB LINK
   ============================================ */

.breadcrumb-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    color: var(--color-text-secondary, #adb5bd);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
    max-width: 200px;
}

.breadcrumb-link:hover {
    color: var(--color-text-primary, #f8f9fa);
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.1);
}

.breadcrumb-link:focus-visible {
    outline: 2px solid var(--color-primary, #8b7fff);
    outline-offset: 2px;
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.1);
}

/* Underline animation on hover */
.breadcrumb-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0.5rem;
    right: 0.5rem;
    height: 1.5px;
    background: var(--color-primary, #8b7fff);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.2s ease;
    opacity: 0.6;
    border-radius: 1px;
}

.breadcrumb-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ============================================
   BREADCRUMB CURRENT (Last item - not clickable)
   ============================================ */

.breadcrumb-current {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    color: var(--color-text-primary, #f8f9fa);
    font-size: 0.875rem;
    font-weight: 600;
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.08);
    max-width: 220px;
}

/* ============================================
   BREADCRUMB ICON
   ============================================ */

.breadcrumb-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    color: inherit;
    opacity: 0.85;
}

.breadcrumb-icon svg {
    width: 100%;
    height: 100%;
}

.breadcrumb-home-icon {
    width: 16px;
    height: 16px;
}

/* ============================================
   BREADCRUMB LABEL
   ============================================ */

.breadcrumb-label {
    display: inline-block;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   BREADCRUMB SEPARATOR (Chevron)
   ============================================ */

.breadcrumb-separator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 0.25rem;
    color: var(--color-text-muted, #6c757d);
    opacity: 0.6;
    flex-shrink: 0;
}

.breadcrumb-chevron {
    width: 14px;
    height: 14px;
}

/* ============================================
   ELLIPSIS MENU (Mobile collapsed breadcrumbs)
   ============================================ */

.breadcrumb-item--ellipsis {
    position: relative;
}

.breadcrumb-ellipsis-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.5rem;
    border: none;
    background: rgba(var(--color-bg-card-rgb, 26, 31, 58), 0.6);
    border-radius: 6px;
    color: var(--color-text-secondary, #adb5bd);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 32px;
    height: 28px;
}

.breadcrumb-ellipsis-btn:hover {
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.15);
    color: var(--color-text-primary, #f8f9fa);
}

.breadcrumb-ellipsis-btn:focus-visible {
    outline: 2px solid var(--color-primary, #8b7fff);
    outline-offset: 2px;
}

.breadcrumb-ellipsis-dots {
    letter-spacing: 0.1em;
    line-height: 1;
}

/* Ellipsis Dropdown Menu */
.breadcrumb-ellipsis-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 180px;
    max-width: 260px;
    background: rgba(var(--color-bg-card-rgb, 26, 31, 58), 0.98);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid rgba(var(--color-border-primary-rgb, 42, 47, 74), 0.8);
    border-radius: 10px;
    padding: 0.375rem;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.35),
        0 0 0 1px rgba(var(--color-primary-rgb, 139, 127, 255), 0.05);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.breadcrumb-ellipsis-menu.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    animation: breadcrumb-menu-in 0.2s ease forwards;
}

.breadcrumb-ellipsis-item {
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    color: var(--color-text-secondary, #adb5bd);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.breadcrumb-ellipsis-item:hover,
.breadcrumb-ellipsis-item:focus {
    color: var(--color-text-primary, #f8f9fa);
    background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.12);
    outline: none;
}

.breadcrumb-ellipsis-item:focus-visible {
    outline: 2px solid var(--color-primary, #8b7fff);
    outline-offset: -2px;
}

/* ============================================
   RESPONSIVE - TABLET
   ============================================ */

@media (max-width: 1024px) {
    .breadcrumb-wrapper {
        padding: 0.5rem 1.5rem;
    }

    .breadcrumb-link,
    .breadcrumb-current {
        font-size: 0.8125rem;
        max-width: 160px;
    }
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */

@media (max-width: 640px) {
    .breadcrumb-wrapper {
        padding: 0.5rem 1rem;
    }

    .breadcrumb-link,
    .breadcrumb-current {
        font-size: 0.8125rem;
        padding: 0.2rem 0.375rem;
    }

    .breadcrumb-separator {
        margin: 0 0.125rem;
    }

    .breadcrumb-chevron {
        width: 12px;
        height: 12px;
    }

    /* Hide underline animation on mobile - use background instead */
    .breadcrumb-link::after {
        display: none;
    }

    .breadcrumb-link:hover {
        background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.12);
    }

    .breadcrumb-label {
        max-width: 80px;
    }

    .breadcrumb-current .breadcrumb-label {
        max-width: 100px;
    }

    .breadcrumb-ellipsis-menu {
        min-width: 160px;
        left: -8px;
    }
}

/* ============================================
   RESPONSIVE - SMALL MOBILE
   ============================================ */

@media (max-width: 480px) {
    .breadcrumb-wrapper {
        padding: 0.4rem 0.75rem;
    }

    .breadcrumb-link,
    .breadcrumb-current {
        font-size: 0.75rem;
        padding: 0.15rem 0.25rem;
    }

    .breadcrumb-label {
        max-width: 60px;
    }

    .breadcrumb-current .breadcrumb-label {
        max-width: 80px;
    }

    .breadcrumb-icon {
        width: 0.875rem;
        height: 0.875rem;
    }

    .breadcrumb-home-icon {
        width: 14px;
        height: 14px;
    }

    .breadcrumb-ellipsis-btn {
        padding: 0.2rem 0.375rem;
        min-width: 28px;
        height: 24px;
        font-size: 0.8rem;
    }

    .breadcrumb-ellipsis-menu {
        min-width: 140px;
        max-width: 200px;
    }

    .breadcrumb-ellipsis-item {
        font-size: 0.8125rem;
        padding: 0.4rem 0.625rem;
    }
}

/* ============================================
   DARK THEME SUPPORT
   ============================================ */

@media (prefers-color-scheme: dark) {
    .breadcrumb-link {
        color: var(--color-text-secondary, #adb5bd);
    }

    .breadcrumb-link:hover {
        color: var(--color-text-primary, #f8f9fa);
    }

    .breadcrumb-current {
        color: var(--color-text-primary, #f8f9fa);
        background: rgba(var(--color-primary-rgb, 139, 127, 255), 0.1);
    }

    .breadcrumb-separator {
        color: var(--color-text-muted, #6c757d);
    }
}

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */

@media (prefers-contrast: high) {
    .breadcrumb-link,
    .breadcrumb-current,
    .breadcrumb-ellipsis-btn {
        border: 1px solid transparent;
    }

    .breadcrumb-link:hover,
    .breadcrumb-link:focus-visible,
    .breadcrumb-ellipsis-btn:hover,
    .breadcrumb-ellipsis-btn:focus-visible {
        border-color: var(--color-primary, #8b7fff);
    }

    .breadcrumb-current {
        border-color: rgba(var(--color-primary-rgb, 139, 127, 255), 0.5);
    }

    .breadcrumb-ellipsis-menu {
        border-width: 2px;
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    .breadcrumb-nav-container.visible {
        animation: none;
    }

    .breadcrumb-link::after {
        display: none;
    }

    .breadcrumb-link,
    .breadcrumb-current,
    .breadcrumb-ellipsis-btn,
    .breadcrumb-ellipsis-menu,
    .breadcrumb-ellipsis-item {
        transition: none;
    }

    .breadcrumb-ellipsis-menu.visible {
        animation: none;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .breadcrumb-nav-container {
        display: block !important;
        background: none;
        border-bottom: 1px solid #ccc;
    }

    .breadcrumb-link,
    .breadcrumb-current {
        color: #333;
        background: none;
    }

    .breadcrumb-separator {
        color: #666;
    }

    .breadcrumb-item--ellipsis {
        display: none;
    }
}