/* ==================== 星空预览样式 ==================== */

/* 星空模式切换按钮（在弹窗header中） - 透明玻璃效果 + 黑色字体 */
.galaxy-toggle-btn {
    display: none; /* 隐藏旧按钮 */
}

/* 模式切换容器 */
.mode-switch-container {
    margin-right: 12px;
}

/* 模式切换按钮 */
.mode-switch-btn {
    display: flex;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 6px;
    padding: 2px;
    cursor: pointer;
    gap: 2px;
}

.mode-label {
    padding: 6px 12px;
    font-size: 13px;
    color: #666;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.mode-label.active {
    background: rgba(0, 0, 0, 0.1);
    color: #1a1a1a;
}

.mode-label:hover:not(.active) {
    color: #333;
}

/* 瀑布模式容器 */
.waterfall-wrapper {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: linear-gradient(180deg, #f5f5f5 0%, #fff 100%);
}

.waterfall-wrapper.active {
    display: block;
}

.waterfall-container {
    column-count: 3;
    column-gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 星空模式header样式 */
.galaxy-mode-header {
    background: rgba(10, 10, 46, 0.95) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.galaxy-mode-header h2 {
    color: #fff !important;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.5) !important;
}

.galaxy-mode-header .guestbook-close {
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    color: #fff !important;
}

.galaxy-mode-header .guestbook-close:hover {
    background: rgba(255, 0, 0, 0.5) !important;
    border-color: rgba(255, 0, 0, 0.6) !important;
}

.galaxy-mode-header .mode-switch-btn {
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
}

.galaxy-mode-header .mode-label {
    color: rgba(255, 255, 255, 0.7) !important;
}

.galaxy-mode-header .mode-label.active {
    background: rgba(255, 255, 255, 0.2) !important;
    color: #fff !important;
}

.waterfall-item {
    break-inside: avoid;
    margin-bottom: 16px;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.waterfall-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.waterfall-item img {
    width: 100%;
    display: block;
    border-radius: 12px 12px 0 0;
}

.waterfall-item-info {
    padding: 12px;
    font-size: 12px;
    color: #666;
    text-align: center;
    background: #fff;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .waterfall-container {
        column-count: 2;
    }
}

@media (max-width: 600px) {
    .waterfall-container {
        column-count: 1;
    }
}

.header-controls {
    display: flex;
    align-items: center;
}

/* 星空画布容器（在弹窗内） */
.galaxy-canvas-wrapper {
    display: none;
    flex: 1;
    position: relative;
    background: radial-gradient(ellipse at center, #1a1a3e 0%, #0a0a2e 50%, #050520 100%);
    overflow: hidden;
}

.galaxy-canvas-wrapper.active {
    display: block;
}

/* 星空背景动画 - 繁杂无序 */
.galaxy-canvas-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        /* 第一大区域 - 各种随机位置和大小 */
        radial-gradient(1px 1px at 5px 15px, #fff, transparent),
        radial-gradient(2px 2px at 45px 8px, rgba(255,255,255,0.85), transparent),
        radial-gradient(1px 1px at 82px 42px, rgba(255,255,255,0.6), transparent),
        radial-gradient(3px 3px at 120px 25px, #fff, transparent),
        radial-gradient(1px 1px at 155px 58px, rgba(255,255,255,0.9), transparent),
        radial-gradient(2px 2px at 192px 12px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 228px 48px, #fff, transparent),
        radial-gradient(2px 2px at 265px 32px, rgba(255,255,255,0.7), transparent),
        radial-gradient(1px 1px at 302px 65px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 338px 8px, #fff, transparent),
        radial-gradient(2px 2px at 375px 42px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 412px 18px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 448px 55px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 485px 38px, #fff, transparent),
        radial-gradient(1px 1px at 522px 72px, rgba(255,255,255,0.7), transparent),
        radial-gradient(3px 3px at 558px 28px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 595px 52px, #fff, transparent),
        /* 第二大区域 - 更随机的分布 */
        radial-gradient(2px 2px at 22px 78px, rgba(255,255,255,0.45), transparent),
        radial-gradient(1px 1px at 68px 92px, #fff, transparent),
        radial-gradient(1px 1px at 108px 85px, rgba(255,255,255,0.55), transparent),
        radial-gradient(2px 2px at 145px 98px, rgba(255,255,255,0.35), transparent),
        radial-gradient(1px 1px at 182px 88px, #fff, transparent),
        radial-gradient(1px 1px at 218px 75px, rgba(255,255,255,0.65), transparent),
        radial-gradient(2px 2px at 255px 95px, rgba(255,255,255,0.45), transparent),
        radial-gradient(1px 1px at 292px 82px, #fff, transparent),
        radial-gradient(1px 1px at 328px 98px, rgba(255,255,255,0.75), transparent),
        radial-gradient(2px 2px at 365px 78px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 402px 92px, #fff, transparent),
        radial-gradient(1px 1px at 438px 85px, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 475px 95px, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 512px 78px, #fff, transparent),
        radial-gradient(1px 1px at 548px 88px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 585px 82px, rgba(255,255,255,0.3), transparent),
        /* 第三大区域 - 散落的小星星 */
        radial-gradient(1px 1px at 15px 108px, rgba(255,255,255,0.25), transparent),
        radial-gradient(1px 1px at 52px 118px, rgba(255,255,255,0.15), transparent),
        radial-gradient(1px 1px at 88px 112px, rgba(255,255,255,0.35), transparent),
        radial-gradient(1px 1px at 125px 105px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 162px 120px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 198px 108px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 235px 115px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 272px 102px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 308px 120px, rgba(255,255,255,0.35), transparent),
        radial-gradient(1px 1px at 345px 108px, rgba(255,255,255,0.45), transparent),
        radial-gradient(1px 1px at 382px 115px, rgba(255,255,255,0.15), transparent),
        radial-gradient(1px 1px at 418px 102px, rgba(255,255,255,0.25), transparent),
        radial-gradient(1px 1px at 455px 112px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 492px 105px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 528px 118px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 565px 108px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 602px 115px, rgba(255,255,255,0.35), transparent),
        /* 额外的亮点 */
        radial-gradient(2px 2px at 35px 55px, rgba(255,255,255,0.6), transparent),
        radial-gradient(3px 3px at 175px 35px, rgba(255,255,255,0.8), transparent),
        radial-gradient(2px 2px at 315px 68px, rgba(255,255,255,0.7), transparent),
        radial-gradient(2px 2px at 455px 25px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 535px 42px, rgba(255,255,255,0.9), transparent),
        radial-gradient(2px 2px at 75px 68px, rgba(255,255,255,0.65), transparent),
        radial-gradient(1px 1px at 205px 82px, rgba(255,255,255,0.75), transparent),
        radial-gradient(3px 3px at 385px 48px, rgba(255,255,255,0.55), transparent),
        radial-gradient(1px 1px at 505px 72px, rgba(255,255,255,0.85), transparent),
        radial-gradient(2px 2px at 625px 15px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 652px 58px, rgba(255,255,255,0.7), transparent),
        radial-gradient(2px 2px at 688px 32px, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 725px 45px, rgba(255,255,255,0.8), transparent),
        radial-gradient(2px 2px at 762px 62px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 798px 18px, rgba(255,255,255,0.65), transparent),
        radial-gradient(1px 1px at 835px 75px, rgba(255,255,255,0.45), transparent),
        radial-gradient(2px 2px at 872px 42px, rgba(255,255,255,0.7), transparent),
        radial-gradient(1px 1px at 908px 28px, rgba(255,255,255,0.55), transparent),
        radial-gradient(2px 2px at 945px 65px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 982px 38px, rgba(255,255,255,0.4), transparent);
    background-repeat: repeat;
    background-size: 1000px 130px;
    animation: twinkle 3s ease-in-out infinite alternate, drift 20s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes twinkle {
    0% { opacity: 0.4; }
    33% { opacity: 0.7; }
    66% { opacity: 0.5; }
    100% { opacity: 0.8; }
}

@keyframes drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-10px, -5px); }
}

.galaxy-canvas-wrapper canvas {
    width: 100%;
    height: 100%;
    display: block;
    position: relative;
    z-index: 1;
}

.galaxy-tip {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.galaxy-canvas-wrapper.active .galaxy-tip {
    opacity: 1;
    animation: fadeInOut 3s ease-in-out forwards;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; }
    20%, 80% { opacity: 1; }
}

/* 星空模式独立按钮（旧版本，保留备用） */
.galaxy-mode-btn {
    background: transparent;
    border: none;
    padding: 8px 12px;
    cursor: pointer;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: all 0.3s ease;
    border-radius: 8px;
    position: relative;
    margin-top: 8px;
}

.galaxy-mode-btn:hover {
    background: rgba(255, 215, 0, 0.1);
    transform: scale(1.1);
}

.galaxy-mode-btn svg {
    transition: transform 0.3s ease;
}

.galaxy-mode-btn:hover svg {
    transform: rotate(15deg);
}

/* 星空预览容器 */
.galaxy-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a2e 0%, #16162e 50%, #0d0d3d 100%);
    z-index: 10000;
    flex-direction: column;
}

.galaxy-container.active {
    display: flex;
    animation: galaxyFadeIn 0.5s ease;
}

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

/* 星空头部 */
.galaxy-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 10001;
}

.galaxy-header h2 {
    color: #FFD700;
    font-size: 20px;
    margin: 0;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.galaxy-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.galaxy-tip {
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
}

.galaxy-close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 24px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.galaxy-close-btn:hover {
    background: rgba(255, 0, 0, 0.5);
    border-color: rgba(255, 0, 0, 0.6);
    transform: rotate(90deg);
}

/* 星空画布 */
#galaxy-canvas {
    flex: 1;
    cursor: grab;
}

#galaxy-canvas:active {
    cursor: grabbing;
}

/* 星星点击提示 */
.star-tooltip {
    position: fixed;
    background: rgba(0, 0, 0, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 14px 18px;
    pointer-events: none;
    z-index: 10002;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    max-width: 320px;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.star-tooltip.visible {
    opacity: 1;
    transform: translateY(0);
}

.star-tooltip img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.star-tooltip p {
    color: rgba(255, 255, 255, 0.9);
    margin: 10px 0 0;
    font-size: 12px;
    text-align: center;
    letter-spacing: 0.5px;
}

/* 星星放大弹窗 */
.star-lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10003;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    backdrop-filter: blur(10px);
}

.star-lightbox.active {
    display: flex;
    animation: lightboxFadeIn 0.25s ease;
}

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

.star-lightbox-container {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.star-lightbox img {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
    animation: imageZoomIn 0.25s ease;
}

@keyframes imageZoomIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.star-lightbox-close {
    position: absolute;
    top: -50px;
    right: -10px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 24px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.star-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: rotate(90deg);
    border-color: rgba(255, 255, 255, 0.4);
}

.star-lightbox-info {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    margin-top: 16px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    letter-spacing: 0.5px;
}

.star-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 24px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.star-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
}

.star-lightbox-nav.prev {
    left: -70px;
}

.star-lightbox-nav.next {
    right: -70px;
}

.star-lightbox-counter {
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    margin-top: 10px;
}

/* 加载动画 */
.galaxy-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #FFD700;
    font-size: 18px;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .galaxy-header {
        padding: 12px 16px;
    }

    .galaxy-header h2 {
        font-size: 16px;
    }

    .galaxy-tip {
        display: none;
    }

    .star-lightbox img {
        max-width: 95%;
    }
}