/**
 * Smart Pagination Widget
 * 8 Premium Skins for pagination and content navigation
 *
 * @package Bith_Core
 * @since 1.0.0
 */

:root {
    --bith-primary: #4FD1C5;
    --bith-primary-dark: #38B2AC;
    --bith-secondary: #6366F1;
    --bith-accent: #F6AD55;
    --bith-text-color: #2D3748;
    --bith-heading-color: #1A202C;
    --bith-border-color: #E2E8F0;
    --bith-muted: #718096;
    --page-bg: #f8fafc;
    --surface: #ffffff;
    --radius: 16px;
    --radius-sm: 8px;
    --radius-pill: 50px;
    --ease-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px -2px rgba(45, 55, 72, 0.08);
    --shadow-md: 0 8px 24px -8px rgba(45, 55, 72, 0.12);
    --shadow-primary: 0 8px 24px -8px rgba(79, 209, 197, 0.35);
}

.bith-smart-pagination {
    --_nav-primary: var(--bith-primary, #4FD1C5);
    --_nav-primary-dark: var(--bith-primary-dark, #38B2AC);
    --_nav-secondary: var(--bith-secondary, #6366F1);
    --_nav-text: var(--bith-text-color, #2D3748);
    --_nav-heading: var(--bith-heading-color, #1A202C);
    --_nav-muted: var(--bith-muted, #718096);
    --_nav-border: var(--bith-border-color, #E2E8F0);
    --_nav-surface: var(--surface, #FFFFFF);
    --_nav-radius: var(--radius, 16px);
    --_nav-radius-sm: var(--radius-sm, 8px);
    --_nav-radius-pill: var(--radius-pill, 50px);
    --_nav-shadow: var(--shadow-md, 0 8px 24px -8px rgba(45, 55, 72, 0.12));
    --_nav-transition: var(--ease-smooth, cubic-bezier(0.4, 0, 0.2, 1));
    --_nav-transition-fast: 0.15s ease-out;

    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    width: 100%;
}

.bith-smart-pagination *,
.bith-smart-pagination *::before,
.bith-smart-pagination *::after {
    box-sizing: border-box;
}

.bith-smart-pagination a {
    text-decoration: none;
    color: inherit;
}

/* ============================================================================
   SKIN 1: CLASSIC NUMBERS (STYLED)
   ============================================================================ */

.bith-smart-pagination--skin-1 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bith-smart-pagination--skin-1 .pagination-classic__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 0.5rem;
    background: var(--_nav-surface);
    border: 2px solid var(--_nav-border);
    border-radius: var(--_nav-radius-sm);
    color: var(--_nav-text);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s var(--_nav-transition);
    cursor: pointer;
}

.bith-smart-pagination--skin-1 .pagination-classic__btn:hover {
    border-color: var(--_nav-primary);
    color: var(--_nav-primary);
    transform: translateY(-2px);
}

.bith-smart-pagination--skin-1 .pagination-classic__btn--active {
    background: linear-gradient(135deg, var(--_nav-primary), var(--_nav-primary-dark));
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-primary);
}

.bith-smart-pagination--skin-1 .pagination-classic__btn--nav {
    background: transparent;
    border-color: transparent;
}

.bith-smart-pagination--skin-1 .pagination-classic__btn--nav:hover {
    background: var(--_nav-primary);
    color: white;
}

.bith-smart-pagination--skin-1 .pagination-classic__btn--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.bith-smart-pagination--skin-1 .pagination-classic__ellipsis {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--_nav-muted);
}

/* ============================================================================
   SKIN 2: LOAD MORE BUTTON
   ============================================================================ */

.bith-smart-pagination--skin-2 {
    display: flex;
    justify-content: center;
}

.bith-smart-pagination--skin-2 .load-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--_nav-primary), var(--_nav-primary-dark));
    border: none;
    border-radius: var(--_nav-radius);
    color: white;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s var(--_nav-transition);
}

.bith-smart-pagination--skin-2 .load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.bith-smart-pagination--skin-2 .load-more-btn__spinner {
    display: none;
    animation: spin 1s linear infinite;
}

.bith-smart-pagination--skin-2 .load-more-btn.is-loading .load-more-btn__text {
    display: none;
}

.bith-smart-pagination--skin-2 .load-more-btn.is-loading .load-more-btn__spinner {
    display: block;
}

.bith-smart-pagination--skin-2 .load-more-btn.is-loading {
    pointer-events: none;
    background: var(--_nav-muted);
}

.bith-smart-pagination--skin-2 .load-more-btn.is-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================================================
   SKIN 3: INFINITE SCROLL LOADER
   ============================================================================ */

.bith-smart-pagination--skin-3 {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
}

.bith-smart-pagination--skin-3 .infinite-scroll-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.bith-smart-pagination--skin-3 .infinite-scroll-loader__dots {
    display: flex;
    gap: 0.5rem;
}

.bith-smart-pagination--skin-3 .infinite-scroll-loader__dots span {
    width: 10px;
    height: 10px;
    background: var(--_nav-primary);
    border-radius: 50%;
    animation: dotPulse 1.4s ease-in-out infinite;
}

.bith-smart-pagination--skin-3 .infinite-scroll-loader__dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.bith-smart-pagination--skin-3 .infinite-scroll-loader__dots span:nth-child(3) {
    animation-delay: 0.4s;
}

.bith-smart-pagination--skin-3 .infinite-scroll-loader__text {
    font-size: 0.8125rem;
    color: var(--_nav-muted);
}

/* ============================================================================
   SKIN 4: FLOATING PILLS
   ============================================================================ */

.bith-smart-pagination--skin-4 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--page-bg);
    border-radius: var(--_nav-radius-pill);
}

.bith-smart-pagination--skin-4 .pagination-pills__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--_nav-surface);
    border-radius: 50%;
    color: var(--_nav-text);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s var(--ease-bounce);
}

.bith-smart-pagination--skin-4 .pagination-pills__item:hover {
    background: var(--_nav-primary);
    color: white;
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-primary);
}

.bith-smart-pagination--skin-4 .pagination-pills__item--active {
    background: linear-gradient(135deg, var(--_nav-primary), var(--_nav-primary-dark));
    color: white;
    box-shadow: var(--shadow-primary);
    transform: scale(1.15);
}

.bith-smart-pagination--skin-4 .pagination-pills__item--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================================================
   SKIN 5: SPLIT NAVIGATION
   ============================================================================ */

.bith-smart-pagination--skin-5 {
    display: flex;
    align-items: stretch;
    width: 100%;
    max-width: 650px;
    background: var(--_nav-surface);
    border-radius: var(--_nav-radius);
    border: 1px solid var(--_nav-border);
    overflow: hidden;
}

.bith-smart-pagination--skin-5 .pagination-split__btn {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    text-decoration: none;
    color: var(--_nav-text);
    transition: all 0.3s var(--_nav-transition);
}

.bith-smart-pagination--skin-5 .pagination-split__btn:first-child {
    justify-content: flex-start;
}

.bith-smart-pagination--skin-5 .pagination-split__btn:last-child {
    justify-content: flex-end;
    text-align: right;
}

.bith-smart-pagination--skin-5 .pagination-split__btn:hover:not(.pagination-split__btn--disabled) {
    background: var(--page-bg);
}

.bith-smart-pagination--skin-5 .pagination-split__btn--disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.bith-smart-pagination--skin-5 .pagination-split__label {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.bith-smart-pagination--skin-5 .pagination-split__label small {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--_nav-muted);
}

.bith-smart-pagination--skin-5 .pagination-split__label strong {
    font-size: 1rem;
    font-weight: 600;
    color: var(--_nav-heading);
}

.bith-smart-pagination--skin-5 .pagination-split__divider {
    width: 1px;
    background: var(--_nav-border);
}

/* ============================================================================
   SKIN 6: PROGRESS BAR INDICATOR
   ============================================================================ */

.bith-smart-pagination--skin-6 {
    width: 100%;
    max-width: 450px;
}

.bith-smart-pagination--skin-6 .pagination-progress__info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.bith-smart-pagination--skin-6 .pagination-progress__label {
    font-size: 0.875rem;
    color: var(--_nav-muted);
}

.bith-smart-pagination--skin-6 .pagination-progress__count {
    font-size: 0.9375rem;
}

.bith-smart-pagination--skin-6 .pagination-progress__count strong {
    color: var(--_nav-heading);
    font-weight: 700;
}

.bith-smart-pagination--skin-6 .pagination-progress__bar {
    height: 8px;
    background: var(--_nav-border);
    border-radius: var(--_nav-radius-pill);
    overflow: hidden;
    margin-bottom: 1.25rem;
}

.bith-smart-pagination--skin-6 .pagination-progress__fill {
    height: 100%;
    width: var(--progress, 0%);
    background: linear-gradient(90deg, var(--_nav-primary), var(--_nav-secondary));
    border-radius: var(--_nav-radius-pill);
    transition: width 0.6s var(--_nav-transition);
    position: relative;
}

.bith-smart-pagination--skin-6 .pagination-progress__fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    background: white;
    border: 3px solid var(--_nav-primary);
    border-radius: 50%;
}

.bith-smart-pagination--skin-6 .pagination-progress__actions {
    display: flex;
    justify-content: center;
}

.bith-smart-pagination--skin-6 .pagination-progress__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--page-bg);
    border: 2px solid var(--_nav-border);
    border-radius: var(--_nav-radius);
    color: var(--_nav-text);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s var(--_nav-transition);
}

.bith-smart-pagination--skin-6 .pagination-progress__btn:hover {
    border-color: var(--_nav-primary);
    color: var(--_nav-primary);
}

.bith-smart-pagination--skin-6 .pagination-progress__btn.is-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================================================
   SKIN 7: GLASSMORPHISM BLOCK
   ============================================================================ */

.bith-smart-pagination--skin-7 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--_nav-radius-pill);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.bith-smart-pagination--skin-7 .pagination-glass__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    border-radius: 50%;
    color: var(--_nav-heading);
    text-decoration: none;
    transition: all 0.3s var(--_nav-transition);
    cursor: pointer;
}

.bith-smart-pagination--skin-7 .pagination-glass__btn:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.1);
}

.bith-smart-pagination--skin-7 .pagination-glass__btn--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.bith-smart-pagination--skin-7 .pagination-glass__numbers {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0 0.5rem;
}

.bith-smart-pagination--skin-7 .pagination-glass__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--_nav-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s var(--_nav-transition);
}

.bith-smart-pagination--skin-7 .pagination-glass__num:hover {
    background: rgba(255, 255, 255, 0.5);
}

.bith-smart-pagination--skin-7 .pagination-glass__num--active {
    background: rgba(255, 255, 255, 0.8);
    color: var(--_nav-primary-dark);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.bith-smart-pagination--skin-7 .pagination-glass__num--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================================================
   SKIN 8: END OF CONTENT STATE
   ============================================================================ */

.bith-smart-pagination--skin-8 {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem;
    max-width: 400px;
}

.bith-smart-pagination--skin-8 .end-of-content__icon {
    width: 120px;
    height: 120px;
}

.bith-smart-pagination--skin-8 .end-of-content__steam {
    animation: steam 2s ease-in-out infinite;
}

.bith-smart-pagination--skin-8 .end-of-content__steam--2 {
    animation-delay: 0.3s;
}

.bith-smart-pagination--skin-8 .end-of-content__steam--3 {
    animation-delay: 0.6s;
}

.bith-smart-pagination--skin-8 .end-of-content__illustration {
    margin-bottom: 1.5rem;
}

.bith-smart-pagination--skin-8 .end-of-content__title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--_nav-heading);
    margin-bottom: 0.5rem;
}

.bith-smart-pagination--skin-8 .end-of-content__message {
    font-size: 0.9375rem;
    color: var(--_nav-muted);
    margin-bottom: 1.5rem;
}

.bith-smart-pagination--skin-8 .end-of-content__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.bith-smart-pagination--skin-8 .end-of-content__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: linear-gradient(135deg, var(--_nav-primary), var(--_nav-primary-dark));
    border-radius: var(--_nav-radius-pill);
    color: white;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s var(--_nav-transition);
}

.bith-smart-pagination--skin-8 .end-of-content__link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.bith-smart-pagination--skin-8 .end-of-content__link--secondary {
    background: transparent;
    color: var(--_nav-text);
    border: 2px solid var(--_nav-border);
}

.bith-smart-pagination--skin-8 .end-of-content__link--secondary:hover {
    border-color: var(--_nav-primary);
    color: var(--_nav-primary);
    box-shadow: none;
}

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

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes dotPulse {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes steam {
    0%, 100% {
        opacity: 0.6;
        transform: translateY(0);
    }
    50% {
        opacity: 0.3;
        transform: translateY(-5px);
    }
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .bith-smart-pagination--skin-1 {
        flex-wrap: wrap;
        justify-content: center;
    }

    .bith-smart-pagination--skin-4 {
        flex-wrap: wrap;
        justify-content: center;
        border-radius: var(--_nav-radius);
    }

    .bith-smart-pagination--skin-5 {
        flex-direction: column;
    }

    .bith-smart-pagination--skin-5 .pagination-split__btn:first-child,
    .bith-smart-pagination--skin-5 .pagination-split__btn:last-child {
        justify-content: center;
        text-align: center;
    }

    .bith-smart-pagination--skin-5 .pagination-split__divider {
        width: 100%;
        height: 1px;
    }

    .bith-smart-pagination--skin-8 .end-of-content__actions {
        flex-direction: column;
        width: 100%;
    }

    .bith-smart-pagination--skin-8 .end-of-content__link {
        width: 100%;
        justify-content: center;
    }
}