/**
 * PMN Breadcrumb - Frontend Styles
 * Modern, minimal, responsive breadcrumb navigation
 */

/* CSS Variables */
.pmn-breadcrumb {
    --pmn-text-color: #6b7280;
    --pmn-link-color: #3b82f6;
    --pmn-link-hover-color: #1d4ed8;
    --pmn-separator-color: #9ca3af;
    --pmn-bg-color: transparent;
    --pmn-padding: 12px 0;
    --pmn-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --pmn-transition: all 0.2s ease;
    --pmn-border-radius: 6px;
}

/* Base Styles */
.pmn-breadcrumb {
    font-family: var(--pmn-font-family);
    background-color: var(--pmn-bg-color);
    padding: var(--pmn-padding);
    position: relative;
    overflow: hidden;
}

.pmn-breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.pmn-breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 0;
    padding: 0;
}

.pmn-breadcrumb-link,
.pmn-breadcrumb-text {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    transition: var(--pmn-transition);
    line-height: 1.4;
}

.pmn-breadcrumb-link {
    color: var(--pmn-link-color);
}

.pmn-breadcrumb-link:hover {
    color: var(--pmn-link-hover-color);
}

.pmn-breadcrumb-text {
    color: var(--pmn-text-color);
}

.pmn-current .pmn-breadcrumb-text {
    font-weight: 500;
}

/* Home Icon */
.pmn-home-icon {
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

/* Separator */
.pmn-separator {
    display: flex;
    align-items: center;
    color: var(--pmn-separator-color);
    margin: 0 2px;
    user-select: none;
}

.pmn-separator svg {
    width: 1em;
    height: 1em;
}

/* Font Sizes */
.pmn-size-small {
    font-size: 12px;
}

.pmn-size-medium {
    font-size: 14px;
}

.pmn-size-large {
    font-size: 16px;
}

/* ========================================
   Theme: Minimal Light (Default)
   ======================================== */
.pmn-theme-minimal-light {
    --pmn-text-color: #6b7280;
    --pmn-link-color: #374151;
    --pmn-link-hover-color: #111827;
    --pmn-separator-color: #d1d5db;
}

/* ========================================
   Theme: Minimal Dark
   ======================================== */
.pmn-theme-minimal-dark {
    --pmn-text-color: #d1d5db;
    --pmn-link-color: #e5e7eb;
    --pmn-link-hover-color: #ffffff;
    --pmn-separator-color: #6b7280;
    --pmn-bg-color: #1f2937;
    --pmn-padding: 12px 16px;
    border-radius: var(--pmn-border-radius);
}

/* ========================================
   Theme: Bordered
   ======================================== */
.pmn-theme-bordered {
    --pmn-bg-color: #f9fafb;
    --pmn-padding: 12px 16px;
    border: 1px solid #e5e7eb;
    border-radius: var(--pmn-border-radius);
}

.pmn-theme-bordered .pmn-breadcrumb-item {
    gap: 8px;
}

.pmn-theme-bordered .pmn-separator {
    margin: 0 4px;
}

/* ========================================
   Theme: Pill Style
   ======================================== */
.pmn-theme-pill {
    --pmn-padding: 8px 0;
}

.pmn-theme-pill .pmn-breadcrumb-list {
    gap: 8px;
}

.pmn-theme-pill .pmn-breadcrumb-link,
.pmn-theme-pill .pmn-breadcrumb-text {
    background-color: #f3f4f6;
    padding: 6px 12px;
    border-radius: 9999px;
    font-size: 0.875em;
}

.pmn-theme-pill .pmn-breadcrumb-link:hover {
    background-color: #e5e7eb;
}

.pmn-theme-pill .pmn-current .pmn-breadcrumb-text {
    background-color: var(--pmn-link-color);
    color: #ffffff;
}

.pmn-theme-pill .pmn-separator {
    display: none;
}

/* ========================================
   Skeleton Loading
   ======================================== */
.pmn-has-skeleton .pmn-breadcrumb-list {
    opacity: 0;
    visibility: hidden;
    position: absolute;
}

.pmn-has-skeleton.pmn-loaded .pmn-breadcrumb-list {
    opacity: 1;
    visibility: visible;
    position: relative;
    animation: pmnFadeIn 0.3s ease;
}

.pmn-has-skeleton.pmn-loaded .pmn-breadcrumb-skeleton {
    display: none;
}

.pmn-breadcrumb-skeleton {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pmn-skeleton-item {
    height: 16px;
    width: 60px;
    background: linear-gradient(90deg, #e5e7eb 25%, #f3f4f6 50%, #e5e7eb 75%);
    background-size: 200% 100%;
    border-radius: 4px;
}

.pmn-skeleton-item-md {
    width: 80px;
}

.pmn-skeleton-item-lg {
    width: 100px;
}

.pmn-skeleton-sep {
    height: 16px;
    width: 16px;
    background: #e5e7eb;
    border-radius: 2px;
}

/* Skeleton Animation: Pulse */
.pmn-skeleton-pulse .pmn-skeleton-item,
.pmn-skeleton-pulse .pmn-skeleton-sep {
    animation: pmnPulse 1.5s ease-in-out infinite;
}

@keyframes pmnPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Skeleton Animation: Wave */
.pmn-skeleton-wave .pmn-skeleton-item,
.pmn-skeleton-wave .pmn-skeleton-sep {
    animation: pmnWave 1.5s ease-in-out infinite;
}

@keyframes pmnWave {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Skeleton Animation: Shimmer */
.pmn-skeleton-shimmer .pmn-skeleton-item,
.pmn-skeleton-shimmer .pmn-skeleton-sep {
    background: linear-gradient(
        90deg,
        #e5e7eb 0%,
        #f9fafb 20%,
        #e5e7eb 40%,
        #e5e7eb 100%
    );
    background-size: 400% 100%;
    animation: pmnShimmer 1.5s ease-in-out infinite;
}

@keyframes pmnShimmer {
    0% {
        background-position: 100% 0;
    }
    100% {
        background-position: -100% 0;
    }
}

@keyframes pmnFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .pmn-breadcrumb {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .pmn-breadcrumb::-webkit-scrollbar {
        display: none;
    }

    .pmn-breadcrumb-list {
        flex-wrap: nowrap;
        white-space: nowrap;
        padding-right: 16px;
    }

    .pmn-size-small {
        font-size: 11px;
    }

    .pmn-size-medium {
        font-size: 13px;
    }

    .pmn-size-large {
        font-size: 14px;
    }

    .pmn-theme-pill .pmn-breadcrumb-link,
    .pmn-theme-pill .pmn-breadcrumb-text {
        padding: 5px 10px;
    }
}

@media (max-width: 480px) {
    .pmn-breadcrumb {
        --pmn-padding: 8px 0;
    }

    .pmn-breadcrumb-list {
        gap: 2px;
    }

    .pmn-theme-bordered {
        --pmn-padding: 10px 12px;
    }

    .pmn-theme-pill .pmn-breadcrumb-list {
        gap: 6px;
    }
}

/* ========================================
   Accessibility
   ======================================== */
.pmn-breadcrumb-link:focus {
    outline: 2px solid var(--pmn-link-color);
    outline-offset: 2px;
    border-radius: 2px;
}

.pmn-breadcrumb-link:focus:not(:focus-visible) {
    outline: none;
}

.pmn-breadcrumb-link:focus-visible {
    outline: 2px solid var(--pmn-link-color);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .pmn-breadcrumb {
        background: none !important;
        padding: 8px 0;
    }

    .pmn-breadcrumb-link {
        color: #000 !important;
        text-decoration: underline;
    }

    .pmn-separator {
        color: #666 !important;
    }

    .pmn-breadcrumb-skeleton {
        display: none !important;
    }
}