/* Global style reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
    overflow: hidden;
    /* Define CSS variables for safe area */
    --sat: env(safe-area-inset-top);
    --sab: env(safe-area-inset-bottom);
    --sal: env(safe-area-inset-left);
    --sar: env(safe-area-inset-right);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #ffffff;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    height: 100%;
    margin: 0;
    padding: 0;
    /* Support safe area */
    padding-top: var(--sat);
    padding-bottom: var(--sab);
    padding-left: var(--sal);
    padding-right: var(--sar);
}

/* Viewport container - Optimized height calculation, supports browser UI */
.viewport-container {
    position: fixed;
    top: 0; /* Changed to start from top */
    left: 0; /* Changed to start from left */
    transform: none; /* Remove centering transform */
    width: 100vw;
    /* Use dynamic viewport height, considering browser UI */
    height: 80dvh;
    max-width: 480px;
    /* Remove fixed max-height, use dynamic calculation */
    background-color: #000000;
    border-radius: 0;
    overflow: hidden;
    z-index: 1000;
    /* Support safe area */
    padding-top: var(--sat);
    padding-bottom: var(--sab);
    padding-left: var(--sal);
    padding-right: var(--sar);
}

/* Maintain centering effect on desktop */
@media (min-width: 481px) and (min-height: 961px) {
    .viewport-container {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        border-radius: 6px;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
        /* Safe area not needed on desktop */
        padding: 0;
    }
}

/* Video container */
.video-container {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: #000000;
}

/* Video wrapper */
.video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform 0.3s ease-out;
}

/* Three container positioning */
.container-prev {
    transform: translateY(-100%);
    z-index: 1;
}

.container-current {
    transform: translateY(0);
    z-index: 2;
}

.container-next {
    transform: translateY(100%);
    z-index: 1;
}

/* Video content */
.video-content {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: #000000;
}

/* MSE container */
.mse {
    width: 100%;
    height: 100%;
    background-color: #000000;
}

/* XGPlayer style overrides */
.xgplayer {
    width: 100% !important;
    height: 100% !important;
    background-color: #000000 !important;
}

.xgplayer video {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    background-color: #000000 !important;
}

/* Hide XGPlayer default UI */
.xgplayer .xgplayer-play,
.xgplayer .xgplayer-start,
.xgplayer .xgplayer-center,
.xgplayer .xgplayer-controls,
.xgplayer .xgplayer-controls .xgplayer-icon,
.xgplayer .xgplayer-controls .xgplayer-time,
.xgplayer .xgplayer-controls .xgplayer-playbackrate,
.xgplayer .xgplayer-controls .xgplayer-volume,
.xgplayer .xgplayer-controls .xgplayer-fullscreen,
.xgplayer .xgplayer-controls .xgplayer-setting,
.xgplayer .xgplayer-controls .xgplayer-download,
.xgplayer .xgplayer-controls .xgplayer-pip {
    display: none !important;
}

.xgplayer-progress,
.xgplayer-progress-bar,
.xgplayer-progress-outer,
.xgplayer-progress-inner {
    display: none !important;
}

.mask, .modal, .xgplayer-fullscreen, .xgplayer-mask, .xg-mask,
.xgplayer-layer, .xgplayer-interact, .xg-trigger.trigger,
.xgplayer-overlay, .xgplayer-modal, .xgplayer-popup,
.xgplayer .xgplayer-mask, .xgplayer .xg-mask, .xgplayer .mask,
.xgplayer .xgplayer-overlay, .xgplayer .xgplayer-modal,
.xgplayer .xgplayer-popup, .xgplayer .xgplayer-layer,
/* New: For detected overlay elements */
xg-mask, .xgmask, .xg-tips,
.xgplayer xg-mask, .xgplayer .xgmask, .xgplayer .xg-tips,
.xgplayer .xgplayer-tips, .xgplayer .xg-tips {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
    background: transparent !important;
    background-color: transparent !important;
}

/* Touch optimization */
#video-container, #mse, .xgplayer, .xgplayer video {
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    -webkit-tap-highlight-color: transparent;
    pointer-events: auto;
}

/* Responsive design - Optimized viewport height, supports browser UI */
@media (max-width: 480px) {
    .viewport-container {
        width: 100vw;
        height: 100dvh; /* Use dynamic viewport height */
        max-width: none;
        /* Remove max-height limit, use dynamic viewport height */
        border: none;
        top: 0;
        left: 0;
        transform: none;
        /* Ensure safe area support */
        padding-top: var(--sat);
        padding-bottom: var(--sab);
        padding-left: var(--sal);
        padding-right: var(--sar);
    }
}

@media (max-height: 960px) {
    .viewport-container {
        width: 100vw;
        height: 100dvh; /* Use dynamic viewport height */
        max-width: none;
        /* Remove max-height limit, ensure full display */
        border: none;
        top: 0;
        left: 0;
        transform: none;
        /* Ensure safe area support */
        padding-top: var(--sat);
        padding-bottom: var(--sab);
        padding-left: var(--sal);
        padding-right: var(--sar);
    }
}

/* New: Optimization for extra small screens */
@media (max-height: 600px) {
    .viewport-container {
        height: 100dvh; /* Use dynamic viewport height */
        /* Ensure full display on extra small screens */
        top: 0;
        left: 0;
        transform: none;
        /* Ensure safe area support */
        padding-top: var(--sat);
        padding-bottom: var(--sab);
        padding-left: var(--sal);
        padding-right: var(--sar);
    }
}

/* New: Optimization for landscape mode */
@media (orientation: landscape) and (max-height: 480px) {
    .viewport-container {
        height: 100dvh; /* Use dynamic viewport height */
        /* Ensure full display in landscape mode */
        top: 0;
        left: 0;
        transform: none;
        /* Ensure safe area support */
        padding-top: var(--sat);
        padding-bottom: var(--sab);
        padding-left: var(--sal);
        padding-right: var(--sar);
    }
}

/* Loading animation */
.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid #ffffff;
    border-top: 4px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1000;
}

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

/* Error message */
.error-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-size: 16px;
    text-align: center;
    z-index: 1000;
}

/* General utility classes */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

.fade-out {
    animation: fadeOut 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* Scrollbar hidden */
::-webkit-scrollbar {
    display: none;
}

* {
    -ms-overflow-style: none;
    scrollbar-width: none;
}