/**
 * 打赏弹幕样式
 * 
 * @package Donation_Barrage
 */

/* 弹幕容器 */
.db-barrage-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    pointer-events: none;
    display: none !important; /* 默认强制隐藏，只有 JS 添加类后才显示 */
}

/* JS 激活后显示 */
.db-barrage-container.db-active {
    display: block !important;
}

.db-barrage-container--paused .db-barrage-item {
    animation-play-state: paused;
}

/* 弹幕轨道 */
.db-barrage-track {
    position: relative;
    width: 100%;
    height: 100%;
}

/* 单条弹幕 */
.db-barrage-item {
    position: absolute;
    white-space: nowrap;
    color: #ffffff;
    text-shadow: 
        -1px -1px 0 #000,
        1px -1px 0 #000,
        -1px 1px 0 #000,
        1px 1px 0 #000,
        2px 2px 3px rgba(0, 0, 0, 0.5);
    cursor: pointer;
    pointer-events: auto;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.db-barrage-item__text {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.3) 0%, rgba(255, 165, 0, 0.2) 100%);
    border: 1px solid rgba(255, 215, 0, 0.4);
    transition: all 0.3s ease;
}

.db-barrage-item:hover .db-barrage-item__text {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.5) 0%, rgba(255, 165, 0, 0.4) 100%);
    border-color: rgba(255, 215, 0, 0.8);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* 金额高亮 */
.db-barrage-item__amount {
    font-weight: bold;
    color: #ffd700;
    margin-left: 4px;
}

/* 日期样式 */
.db-barrage-item__date {
    font-size: 0.75em;
    opacity: 0.7;
    margin-left: 8px;
}

/* 姓名样式 */
.db-barrage-item__name {
    /* 颜色通过内联样式设置 */
}

/* 金额样式 */
.db-barrage-item__amount {
    font-weight: bold;
    /* 颜色通过内联样式设置 */
}

/* 分隔符样式 */
.db-barrage-item__divider {
    color: inherit;
}

/* 滚动动画 - 从右向左 */
@keyframes db-scroll-right-to-left {
    0% {
        transform: translateX(100vw); /* 从屏幕右侧外开始 */
    }
    100% {
        transform: translateX(-100vw); /* 移动到屏幕左侧外 */
    }
}

.db-barrage-item--scrolling {
    animation: db-scroll-right-to-left linear forwards;
    /* 确保动画结束后保持最终状态 */
    animation-fill-mode: forwards;
}

/* 淡出动画 */
@keyframes db-fade-out {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        visibility: hidden;
    }
}

.db-barrage-item--fading {
    animation: db-fade-out 1s ease-out forwards;
}

/* 不同层级的弹幕轨道 */
.db-barrage-lane {
    position: absolute;
    width: 100%;
    height: 20px;
    overflow: hidden;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .db-barrage-container {
        height: 40px;
    }
    
    .db-barrage-item {
        font-size: 12px !important;
    }
    
    .db-barrage-item__text {
        padding: 2px 6px;
    }
}

@media screen and (max-width: 480px) {
    .db-barrage-container {
        height: 35px;
    }
    
    .db-barrage-item {
        font-size: 11px !important;
    }
}

/* 平板设备 */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .db-barrage-container {
        height: 50px;
    }
}

/* 高性能模式 - 减少特效 */
@media (prefers-reduced-motion: reduce) {
    .db-barrage-item {
        transition: none;
    }
    
    .db-barrage-item__text {
        background: rgba(0, 0, 0, 0.5);
        border: 1px solid rgba(255, 255, 255, 0.3);
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    .db-barrage-container {
        background-color: rgba(0, 0, 0, 0.8);
    }
    
    .db-barrage-item__text {
        background: linear-gradient(135deg, rgba(255, 215, 0, 0.25) 0%, rgba(255, 165, 0, 0.15) 100%);
    }
}

/* 打印时隐藏 */
@media print {
    .db-barrage-container {
        display: none !important;
    }
}

/* 无障碍支持 */
.db-barrage-container:focus-within {
    outline: 2px solid #ffd700;
    outline-offset: 2px;
}

/* 加载状态 */
.db-barrage-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-size: 14px;
    text-align: center;
    display: none; /* 默认隐藏，只有 JS 添加时才显示 */
}

.db-barrage-loading::before {
    content: '';
    display: block;
    width: 20px;
    height: 20px;
    margin: 0 auto 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffd700;
    border-radius: 50%;
    animation: db-spin 0.8s linear infinite;
}

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

/* 错误状态 */
.db-barrage-error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ff6b6b;
    font-size: 14px;
    text-align: center;
    background: rgba(0, 0, 0, 0.8);
    padding: 10px 20px;
    border-radius: 4px;
}

/* ========== 全屏弹幕模式 ========== */

/* 全屏容器 */
.db-barrage-full-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 999999;
}

.db-barrage-full-screen .db-barrage-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.db-barrage-full-screen-track {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* 全屏模式下的弹幕项 */
.db-barrage-full-screen .db-barrage-item {
    position: absolute;
    white-space: nowrap;
    color: #ffffff;
    text-shadow: 
        -1px -1px 0 #000,
        1px -1px 0 #000,
        -1px 1px 0 #000,
        1px 1px 0 #000,
        2px 2px 3px rgba(0, 0, 0, 0.8);
    cursor: pointer;
    pointer-events: auto;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.db-barrage-full-screen .db-barrage-item__text {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.35) 0%, rgba(255, 165, 0, 0.25) 100%);
    border: 1px solid rgba(255, 215, 0, 0.5);
    transition: all 0.3s ease;
    font-size: 16px;
}

.db-barrage-full-screen .db-barrage-item:hover .db-barrage-item__text {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.6) 0%, rgba(255, 165, 0, 0.5) 100%);
    border-color: rgba(255, 215, 0, 0.9);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.7), 0 0 30px rgba(255, 215, 0, 0.4);
    transform: scale(1.05);
}

/* 全屏模式下不同轨道的弹幕 */
.db-barrage-lane-1 { top: 5%; }
.db-barrage-lane-2 { top: 10%; }
.db-barrage-lane-3 { top: 15%; }
.db-barrage-lane-4 { top: 20%; }
.db-barrage-lane-5 { top: 25%; }
.db-barrage-lane-6 { top: 30%; }
.db-barrage-lane-7 { top: 35%; }
.db-barrage-lane-8 { top: 40%; }
.db-barrage-lane-9 { top: 45%; }
.db-barrage-lane-10 { top: 50%; }
.db-barrage-lane-11 { top: 55%; }
.db-barrage-lane-12 { top: 60%; }
.db-barrage-lane-13 { top: 65%; }
.db-barrage-lane-14 { top: 70%; }
.db-barrage-lane-15 { top: 75%; }
.db-barrage-lane-16 { top: 80%; }
.db-barrage-lane-17 { top: 85%; }
.db-barrage-lane-18 { top: 90%; }
.db-barrage-lane-19 { top: 95%; }

/* 全屏模式响应式 */
@media screen and (max-width: 768px) {
    .db-barrage-full-screen .db-barrage-item__text {
        font-size: 14px;
        padding: 4px 8px;
    }
}

@media screen and (max-width: 480px) {
    .db-barrage-full-screen .db-barrage-item__text {
        font-size: 12px;
        padding: 3px 6px;
    }
}