/* ========== IMAGE SLIDER - FRONTEND STYLES ========== */

/* Container chính của slider */
.image-slider {
    position: relative;
    width: 100%;
    max-width: 100%;
    margin: 20px auto;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    background: #000;
    user-select: none;
}
.pen_name {
    text-align: right;
    font-size: 19px;
    font-weight: 800;
    margin: 0 10px;
}
.pen_name_more {
    text-align: right;
    font-style: italic;
    font-size: 16px;
}
/* Container bên trong */
.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Track chứa tất cả slides */
.slider-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    width: 100%;
    height: 100%;
    will-change: transform;
}

/* Mỗi slide item */
.slider-item {
    min-width: 100%;
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

/* Hover effect cho ảnh */
.slider-item:hover img {
    transform: scale(1.05);
}

/* Caption overlay */
.slider-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 70%, transparent 100%);
    color: #fff;
    padding: 25px 30px;
    font-size: 16px;
    line-height: 1.5;
    font-weight: 400;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.image-slider:hover .slider-caption {
    transform: translateY(0);
}

/* Navigation buttons */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: bold;
    color: #333;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    opacity: 0;
    user-select: none;
    outline: none;
}

.image-slider:hover .slider-nav {
    opacity: 1;
}

.slider-nav:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-50%) scale(1.15);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.slider-nav:active {
    transform: translateY(-50%) scale(1.05);
}

.slider-prev {
    left: 20px;
}

.slider-next {
    right: 20px;
}

/* Dots indicator - Improved */
.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10;
    padding: 10px 18px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.slider-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    outline: none;
    border: 2px solid transparent;
    flex-shrink: 0;
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: scale(1.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.slider-dot.active {
    background: #fff;
    transform: scale(1.5);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
}

/* Dot với số thứ tự */
.slider-dots.numbered .slider-dot {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.7);
}

.slider-dots.numbered .slider-dot.active {
    color: #000;
}

/* Dot dạng progress line */
.slider-dots.progress-style {
    flex-direction: column;
    gap: 3px;
    padding: 8px 12px;
}

.slider-dots.progress-style .slider-dot {
    width: 30px;
    height: 3px;
    border-radius: 2px;
}

.slider-dots.progress-style .slider-dot.active {
    transform: scaleX(1.2);
}

/* Loading animation */
.slider-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 20;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Progress bar */
.slider-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background: rgba(255, 255, 255, 0.8);
    transform-origin: left;
    transform: scaleX(0);
    transition: transform linear;
    z-index: 15;
}

/* Counter */
.slider-counter {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    backdrop-filter: blur(10px);
    z-index: 10;
}

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

/* Tablet */
@media (max-width: 768px) {
    .image-slider {
        margin: 15px auto;
        border-radius: 10px;
    }
    
    .slider-nav {
        width: 45px;
        height: 45px;
        font-size: 20px;
        opacity: 1; /* Luôn hiển thị trên tablet */
        background: rgba(255, 255, 255, 0.95);
    }
    
    .slider-prev {
        left: 15px;
    }
    
    .slider-next {
        right: 15px;
    }
    
    .slider-caption {
        padding: 15px 20px;
        font-size: 15px;
        transform: translateY(0); /* Luôn hiển thị trên tablet */
    }
    
    .slider-dots {
        bottom: 15px;
        gap: 10px;
        padding: 8px 14px;
    }
    
    .slider-dot {
        width: 13px;
        height: 13px;
    }
    
    .slider-dot:hover {
        transform: scale(1.25);
    }
    
    .slider-dot.active {
        transform: scale(1.45);
    }
    
    .slider-counter {
        top: 15px;
        right: 15px;
        font-size: 13px;
        padding: 6px 10px;
    }
    
    /* Dots numbered style cho tablet */
    .slider-dots.numbered .slider-dot {
        width: 22px;
        height: 22px;
        font-size: 10px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .image-slider {
        margin: 10px auto;
        border-radius: 8px;
    }
    
    .slider-nav {
        width: 40px;
        height: 40px;
        font-size: 18px;
        opacity: 1;
        background: rgba(255, 255, 255, 0.92);
    }
    
    .slider-prev {
        left: 10px;
    }
    
    .slider-next {
        right: 10px;
    }
    
    .slider-caption {
        padding: 12px 15px;
        font-size: 14px;
        transform: translateY(0);
        line-height: 1.4;
    }
    
    .slider-dots {
        bottom: 12px;
        padding: 6px 12px;
        gap: 8px;
    }
    
    .slider-dot {
        width: 11px;
        height: 11px;
    }
    
    .slider-dot:hover {
        transform: scale(1.2);
    }
    
    .slider-dot.active {
        transform: scale(1.35);
        box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
    }
    
    .slider-counter {
        top: 12px;
        right: 12px;
        font-size: 12px;
        padding: 5px 8px;
    }
    
    /* Dots styles cho mobile */
    .slider-dots.numbered .slider-dot {
        width: 20px;
        height: 20px;
        font-size: 9px;
    }
    
    .slider-dots.progress-style .slider-dot {
        width: 25px;
        height: 3px;
    }
    
    /* Progress bar thinner trên mobile */
    .slider-progress {
        height: 3px;
    }
}

/* Mobile Extra Small */
@media (max-width: 360px) {
    .image-slider {
        margin: 8px auto;
        border-radius: 6px;
    }
    
    .slider-nav {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .slider-prev {
        left: 8px;
    }
    
    .slider-next {
        right: 8px;
    }
    
    .slider-caption {
        padding: 10px 12px;
        font-size: 13px;
        line-height: 1.3;
    }
    
    .slider-dots {
        bottom: 10px;
        gap: 6px;
        padding: 5px 10px;
    }
    
    .slider-dot {
        width: 9px;
        height: 9px;
    }
    
    .slider-counter {
        top: 10px;
        right: 10px;
        font-size: 11px;
        padding: 4px 6px;
    }
    
    /* Simplify dots trên màn hình rất nhỏ */
    .slider-dots.numbered {
        display: none; /* Ẩn numbered dots */
    }
    
    .slider-dots.progress-style .slider-dot {
        width: 20px;
        height: 2px;
    }
}

/* ========== SPECIAL RESPONSIVE CASES ========== */

/* Khi chiều cao viewport nhỏ (landscape mobile) */
@media (max-height: 500px) and (orientation: landscape) {
    .slider-caption {
        padding: 8px 12px;
        font-size: 12px;
        background: rgba(0, 0, 0, 0.9);
    }
    
    .slider-dots {
        bottom: 8px;
        padding: 4px 8px;
    }
    
    .slider-nav {
        width: 35px;
        height: 35px;
        font-size: 16px;
    }
    
    .slider-counter {
        top: 8px;
        right: 8px;
        font-size: 10px;
        padding: 3px 6px;
    }
}

/* ========== PRINT RESPONSIVE ========== */
@media print {
    .image-slider {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
        border-radius: 0;
        margin: 10px 0;
    }
    
    .slider-nav,
    .slider-dots,
    .slider-counter,
    .slider-progress {
        display: none !important;
    }
    
    .slider-track {
        display: block !important;
        transform: none !important;
    }
    
    .slider-item {
        min-width: 100% !important;
        page-break-inside: avoid;
        margin-bottom: 15px;
    }
    
    .slider-item:last-child {
        margin-bottom: 0;
    }
    
    .slider-caption {
        position: static;
        background: #f5f5f5;
        color: #000;
        transform: none;
        border-top: 1px solid #ddd;
        padding: 10px;
        font-size: 12px;
    }
    
    .slider-item img {
        max-height: 300px;
        object-fit: contain;
    }
}

/* ========== SPECIAL EFFECTS ========== */

/* Fade transition variant */
.image-slider.fade-transition .slider-track {
    transition: none;
}

.image-slider.fade-transition .slider-item {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.image-slider.fade-transition .slider-item.active {
    opacity: 1;
}

/* Ken Burns effect */
.image-slider.ken-burns .slider-item img {
    animation: kenBurns 8s ease-in-out infinite alternate;
}

@keyframes kenBurns {
    0% {
        transform: scale(1) translate(0, 0);
    }
    100% {
        transform: scale(1.1) translate(-2%, -2%);
    }
}

/* Parallax effect */
.image-slider.parallax .slider-item img {
    transform: scale(1.2);
    transition: transform 0.6s ease;
}

/* Dark theme variant */
.image-slider.dark-theme {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.image-slider.dark-theme .slider-nav {
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
}

.image-slider.dark-theme .slider-nav:hover {
    background: rgba(0, 0, 0, 0.9);
}

.image-slider.dark-theme .slider-dots {
    background: rgba(255, 255, 255, 0.1);
}

/* Accessibility */
.slider-nav:focus,
.slider-dot:focus {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .slider-track,
    .slider-nav,
    .slider-dot,
    .slider-caption,
    .slider-item img {
        transition: none !important;
        animation: none !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .slider-nav {
        background: #000;
        color: #fff;
        border: 2px solid #fff;
    }
    
    .slider-dot {
        border: 2px solid #fff;
    }
    
    .slider-caption {
        background: rgba(0, 0, 0, 0.9);
    }
}

/* Print styles */
@media print {
    .image-slider {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .slider-nav,
    .slider-dots,
    .slider-counter {
        display: none !important;
    }
    
    .slider-track {
        display: block !important;
        transform: none !important;
    }
    
    .slider-item {
        min-width: 100% !important;
        page-break-inside: avoid;
        margin-bottom: 20px;
    }
    
    .slider-caption {
        position: static;
        background: #f5f5f5;
        color: #000;
        transform: none;
        border-top: 1px solid #ddd;
    }
}

.detail__content video {
    width: 100% !important;
    height: auto !important;
}