/**
 * DM Hero Banner - Frontend Styles
 * Version: 2.2.0
 * Features: Transition Effects with Next/Backward, Accessibility Support
 */

/* ========================================
   CSS VARIABLES
======================================== */
:root {
    --dmhb-transition-duration: 400ms;
}

/* ========================================
   CONTAINER
======================================== */
.dmhb-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5px;
    box-sizing: border-box;
}

.dmhb-container *,
.dmhb-container *::before,
.dmhb-container *::after {
    box-sizing: border-box;
}

/* ========================================
   SCREEN READER ONLY (Accessibility)
======================================== */
.dmhb-sr-live,
.screen-reader-text {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* ========================================
   WRAPPER - Layout chính
======================================== */
.dmhb-wrapper {
    display: flex;
    gap: 8px;
    width: 100%;
}

/* ========================================
   MAIN SLIDER
======================================== */
.dmhb-main-slider {
    flex: 1;
    min-width: 0;
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.dmhb-slider-viewport {
    position: relative;
    width: 100%;
    padding-top: calc(29.5% + 8px);
    overflow: hidden;
    border-radius: 4px;
    background-color: #f5f5f5;
}

.dmhb-slides-track {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ========================================
   SLIDES - Base
======================================== */
.dmhb-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: none;
}

.dmhb-slide.active {
    opacity: 1;
    visibility: visible;
}

.dmhb-slide-link {
    display: block;
    width: 100%;
    height: 100%;
}

/* Focus indicator cho accessibility */
.dmhb-slide-link:focus {
    outline: 3px solid #0073aa;
    outline-offset: -3px;
}

.dmhb-slide-link:focus:not(:focus-visible) {
    outline: none;
}

.dmhb-slide-link:focus-visible {
    outline: 3px solid #0073aa;
    outline-offset: -3px;
}

.dmhb-slide-image {
    width: 100% !important;
    height: 100% !important;
    object-fit: fill;
    object-position: center center;
    display: block;
}

/* ========================================
   TRANSITION EFFECTS
======================================== */

/* --- FADE --- */
.dmhb-transition-fade-enter {
    animation: dmhb-fade-in var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-fade-exit {
    animation: dmhb-fade-out var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes dmhb-fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* --- SLIDE LEFT --- */
.dmhb-transition-slide-left-enter {
    animation: dmhb-slide-left-in var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-slide-left-exit {
    animation: dmhb-slide-left-out var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-slide-left-in {
    from { transform: translateX(100%); opacity: 1; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes dmhb-slide-left-out {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(-100%); opacity: 1; }
}

/* --- SLIDE RIGHT --- */
.dmhb-transition-slide-right-enter {
    animation: dmhb-slide-right-in var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-slide-right-exit {
    animation: dmhb-slide-right-out var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-slide-right-in {
    from { transform: translateX(-100%); opacity: 1; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes dmhb-slide-right-out {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 1; }
}

/* --- SLIDE UP --- */
.dmhb-transition-slide-up-enter {
    animation: dmhb-slide-up-in var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-slide-up-exit {
    animation: dmhb-slide-up-out var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-slide-up-in {
    from { transform: translateY(100%); opacity: 1; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes dmhb-slide-up-out {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(-100%); opacity: 1; }
}

/* --- SLIDE DOWN --- */
.dmhb-transition-slide-down-enter {
    animation: dmhb-slide-down-in var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-slide-down-exit {
    animation: dmhb-slide-down-out var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-slide-down-in {
    from { transform: translateY(-100%); opacity: 1; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes dmhb-slide-down-out {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(100%); opacity: 1; }
}

/* --- ZOOM IN --- */
.dmhb-transition-zoom-in-enter {
    animation: dmhb-zoom-in-enter var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-zoom-in-exit {
    animation: dmhb-zoom-in-exit var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-zoom-in-enter {
    from { transform: scale(0.5); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes dmhb-zoom-in-exit {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(1.5); opacity: 0; }
}

/* --- ZOOM OUT --- */
.dmhb-transition-zoom-out-enter {
    animation: dmhb-zoom-out-enter var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-zoom-out-exit {
    animation: dmhb-zoom-out-exit var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-zoom-out-enter {
    from { transform: scale(1.5); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes dmhb-zoom-out-exit {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(0.5); opacity: 0; }
}

/* --- FLIP X (Horizontal) --- */
.dmhb-transition-flip-x-enter {
    animation: dmhb-flip-x-enter var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

.dmhb-transition-flip-x-exit {
    animation: dmhb-flip-x-exit var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

@keyframes dmhb-flip-x-enter {
    from { transform: perspective(1000px) rotateY(90deg); opacity: 0; }
    to { transform: perspective(1000px) rotateY(0deg); opacity: 1; }
}

@keyframes dmhb-flip-x-exit {
    from { transform: perspective(1000px) rotateY(0deg); opacity: 1; }
    to { transform: perspective(1000px) rotateY(-90deg); opacity: 0; }
}

/* --- FLIP X REVERSE --- */
.dmhb-transition-flip-x-reverse-enter {
    animation: dmhb-flip-x-reverse-enter var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

.dmhb-transition-flip-x-reverse-exit {
    animation: dmhb-flip-x-reverse-exit var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

@keyframes dmhb-flip-x-reverse-enter {
    from { transform: perspective(1000px) rotateY(-90deg); opacity: 0; }
    to { transform: perspective(1000px) rotateY(0deg); opacity: 1; }
}

@keyframes dmhb-flip-x-reverse-exit {
    from { transform: perspective(1000px) rotateY(0deg); opacity: 1; }
    to { transform: perspective(1000px) rotateY(90deg); opacity: 0; }
}

/* --- FLIP Y (Vertical) --- */
.dmhb-transition-flip-y-enter {
    animation: dmhb-flip-y-enter var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

.dmhb-transition-flip-y-exit {
    animation: dmhb-flip-y-exit var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

@keyframes dmhb-flip-y-enter {
    from { transform: perspective(1000px) rotateX(90deg); opacity: 0; }
    to { transform: perspective(1000px) rotateX(0deg); opacity: 1; }
}

@keyframes dmhb-flip-y-exit {
    from { transform: perspective(1000px) rotateX(0deg); opacity: 1; }
    to { transform: perspective(1000px) rotateX(-90deg); opacity: 0; }
}

/* --- FLIP Y REVERSE --- */
.dmhb-transition-flip-y-reverse-enter {
    animation: dmhb-flip-y-reverse-enter var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

.dmhb-transition-flip-y-reverse-exit {
    animation: dmhb-flip-y-reverse-exit var(--dmhb-transition-duration) ease-in-out forwards;
    backface-visibility: hidden;
}

@keyframes dmhb-flip-y-reverse-enter {
    from { transform: perspective(1000px) rotateX(-90deg); opacity: 0; }
    to { transform: perspective(1000px) rotateX(0deg); opacity: 1; }
}

@keyframes dmhb-flip-y-reverse-exit {
    from { transform: perspective(1000px) rotateX(0deg); opacity: 1; }
    to { transform: perspective(1000px) rotateX(90deg); opacity: 0; }
}

/* --- ROTATE --- */
.dmhb-transition-rotate-enter {
    animation: dmhb-rotate-enter var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-rotate-exit {
    animation: dmhb-rotate-exit var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-rotate-enter {
    from { transform: rotate(-180deg) scale(0.5); opacity: 0; }
    to { transform: rotate(0deg) scale(1); opacity: 1; }
}

@keyframes dmhb-rotate-exit {
    from { transform: rotate(0deg) scale(1); opacity: 1; }
    to { transform: rotate(180deg) scale(0.5); opacity: 0; }
}

/* --- ROTATE REVERSE --- */
.dmhb-transition-rotate-reverse-enter {
    animation: dmhb-rotate-reverse-enter var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-rotate-reverse-exit {
    animation: dmhb-rotate-reverse-exit var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-rotate-reverse-enter {
    from { transform: rotate(180deg) scale(0.5); opacity: 0; }
    to { transform: rotate(0deg) scale(1); opacity: 1; }
}

@keyframes dmhb-rotate-reverse-exit {
    from { transform: rotate(0deg) scale(1); opacity: 1; }
    to { transform: rotate(-180deg) scale(0.5); opacity: 0; }
}

/* --- BLUR --- */
.dmhb-transition-blur-enter {
    animation: dmhb-blur-enter var(--dmhb-transition-duration) ease-in-out forwards;
}

.dmhb-transition-blur-exit {
    animation: dmhb-blur-exit var(--dmhb-transition-duration) ease-in-out forwards;
}

@keyframes dmhb-blur-enter {
    from { filter: blur(20px); opacity: 0; }
    to { filter: blur(0); opacity: 1; }
}

@keyframes dmhb-blur-exit {
    from { filter: blur(0); opacity: 1; }
    to { filter: blur(20px); opacity: 0; }
}

/* ========================================
   ARROWS - Thiết kế giống Shopee
======================================== */
.dmhb-arrow {
    position: absolute !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    z-index: 10 !important;
    width: 40px !important;
    height: 80px !important;
    background-color: rgba(0, 0, 0, 0.12) !important;
    border: none !important;
    border-radius: 4px !important;
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.2s ease !important;
}

.dmhb-main-slider:hover .dmhb-arrow {
    opacity: 1 !important;
    visibility: visible !important;
}

.dmhb-arrow:hover {
    background-color: rgba(0, 0, 0, 0.25) !important;
}

.dmhb-arrow:active {
    background-color: rgba(0, 0, 0, 0.35) !important;
}

/* Focus indicator cho accessibility */
.dmhb-arrow:focus {
    outline: 3px solid #0073aa;
    outline-offset: 2px;
    opacity: 1 !important;
    visibility: visible !important;
}

.dmhb-arrow:focus:not(:focus-visible) {
    outline: none;
}

.dmhb-arrow:focus-visible {
    outline: 3px solid #0073aa;
    outline-offset: 2px;
    opacity: 1 !important;
    visibility: visible !important;
}

.dmhb-arrow-prev {
    left: 0 !important;
    border-radius: 0 4px 4px 0 !important;
}

.dmhb-arrow-next {
    right: 0 !important;
    border-radius: 4px 0 0 4px !important;
}

.dmhb-arrow-icon {
    width: 20px !important;
    height: 20px !important;
    fill: #fff !important;
    stroke: none !important;
    flex-shrink: 0 !important;
}

/* ========================================
   DOTS - Điều hướng chấm tròn
======================================== */
.dmhb-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.dmhb-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all 0.25s ease;
}

.dmhb-dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.dmhb-dot.active {
    background: #fff;
    width: 18px;
    border-radius: 3px;
}

/* Focus indicator cho accessibility */
.dmhb-dot:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.dmhb-dot:focus:not(:focus-visible) {
    outline: none;
}

.dmhb-dot:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* ========================================
   SIDE BANNERS - 2 banner phụ bên phải
======================================== */
.dmhb-side-banners {
    width: 33.33%;
    max-width: 398px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dmhb-side-banner {
    flex: 1;
    border-radius: 4px;
    overflow: hidden;
    background-color: #f5f5f5;
    position: relative;
}

.dmhb-side-banner::before {
    content: '';
    display: block;
    padding-top: 28.9%;
}

.dmhb-side-banner a {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* Focus indicator cho accessibility */
.dmhb-side-banner a:focus {
    outline: 3px solid #0073aa;
    outline-offset: -3px;
}

.dmhb-side-banner a:focus:not(:focus-visible) {
    outline: none;
}

.dmhb-side-banner a:focus-visible {
    outline: 3px solid #0073aa;
    outline-offset: -3px;
}

.dmhb-side-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    object-fit: fill;
    object-position: center center;
    display: block;
    transition: transform 0.3s ease;
}

.dmhb-side-banner:hover .dmhb-side-image {
    transform: scale(1.02);
}

/* ========================================
   RESPONSIVE - Mobile (<805px)
======================================== */
@media (max-width: 804px) {
    .dmhb-container {
        padding: 0 5px;
    }
    
    .dmhb-wrapper {
        flex-direction: column;
    }
    
    .dmhb-main-slider {
        width: 100%;
    }
    
    .dmhb-side-banners {
        display: none !important;
    }
    
    .dmhb-arrow {
        width: 30px;
        height: 60px;
    }
    
    .dmhb-arrow-icon {
        width: 16px;
        height: 16px;
    }
    
    .dmhb-dots {
        bottom: 8px;
        gap: 5px;
        padding: 3px 6px;
    }
    
    .dmhb-dot {
        width: 5px;
        height: 5px;
    }
    
    .dmhb-dot.active {
        width: 14px;
    }
}

/* ========================================
   TOUCH DEVICES - Thiết bị cảm ứng
======================================== */
@media (hover: none) and (pointer: coarse) {
    .dmhb-arrow {
        opacity: 0.6;
        visibility: visible;
    }
    
    .dmhb-arrow:active {
        opacity: 1;
    }
}

/* ========================================
   REDUCED MOTION (Accessibility)
======================================== */
@media (prefers-reduced-motion: reduce) {
    .dmhb-slide,
    .dmhb-arrow,
    .dmhb-dot,
    .dmhb-side-image {
        transition: none !important;
        animation-duration: 0.1ms !important;
    }
    
    .dmhb-container {
        --dmhb-transition-duration: 100ms !important;
    }
}

/* ========================================
   HIGH CONTRAST MODE (Accessibility)
======================================== */
@media (prefers-contrast: high) {
    .dmhb-arrow {
        background-color: rgba(0, 0, 0, 0.8) !important;
        border: 2px solid #fff !important;
    }
    
    .dmhb-dot {
        border: 2px solid #fff;
    }
    
    .dmhb-dot.active {
        background: #fff;
        border-color: #fff;
    }
}

/* ========================================
   NO JAVASCRIPT FALLBACK
======================================== */
.no-js .dmhb-slide {
    position: relative;
    opacity: 1;
    visibility: visible;
}

.no-js .dmhb-slide:not(:first-child) {
    display: none;
}

.no-js .dmhb-arrow,
.no-js .dmhb-dots {
    display: none;
}