/* General Styles */
body {
    font-family: 'FiraCode', 'Consolas', 'Monaco', monospace;
    color: #E0E0E0;
    background: linear-gradient(135deg, #2c5530 0%, #4a7c59 15%, #6b8e23 25%, #87ceeb 35%, #b0e0e6 45%, #4682b4 55%, #2f4f4f 65%, #36454f 75%, #1c1c1c 85%, #000000 100%);
    overflow-x: hidden;
    margin: 0;
    min-height: 100vh;
    background-attachment: fixed;
}

/* Navigation Bar */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    height: 60px;
    display: flex;
    align-items: center;
}

.nav {
    display: flex;
    gap: 20px;
}

.nav-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    padding: 10px 15px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #87CEFA;
    transition: width 0.3s ease;
}

.nav-btn:hover,
.nav-btn.active {
    color: white;
}

.nav-btn:hover::after,
.nav-btn.active::after {
    width: 100%;
}

/* Main Content */
main {
    padding-top: 80px; /* Space for fixed navbar */
    padding-bottom: 80px; /* Space for fixed footer */
    min-height: calc(100vh - 160px);
}

/* Content Sections */
.content-section {
    display: none;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    min-height: calc(100vh - 240px); /* Account for navbar, footer, and padding */
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    z-index: 10;
}

.content-section.active {
    display: block;
}

/* Home Page Specific Styles */
#home {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 160px);
    padding: 20px;
    position: relative;
    background: none;
    backdrop-filter: none;
    border: none;
    box-shadow: none;
    transform: none;
    width: auto;
    top: auto;
    left: auto;
}

#home.active {
    display: flex;
}

.main-container {
    display: flex;
    width: 90%;
    max-width: 1200px;
    height: 80vh;
    max-height: 700px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Left Panel */
.left-panel {
    flex: 0 0 350px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.intro-card {
    background: #fff;
    color: #333;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    width: 100%;
}

#avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 20px;
    border: 3px solid #eee;
    animation: rotate 8s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.intro-card .title {
    font-size: 1.5em;
    font-weight: bold;
    margin: 0 0 10px;
    color: #000;
}

.cursor {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    from, to { color: transparent; }
    50% { color: #000; }
}

.intro-card p {
    margin: 5px 0;
    font-size: 0.9em;
    line-height: 1.6;
    color: #555;
}

.contact {
    margin: 15px 0;
    font-size: .8em;
    color: #777;
}

.links {
    margin-top: 20px;
}

.links .btn {
    text-decoration: none;
    color: #fff;
    background: #4a4a4a;
    padding: 10px 20px;
    border-radius: 25px;
    margin: 0 5px;
    transition: background 0.3s ease;
}

.links .btn:hover {
    background: #6a6a6a;
}
.links .btn:last-child {
    background: #6a0dad;
}
.links .btn:last-child:hover {
    background: #8a2be2;
}

/* Right Panel */
.right-panel {
    flex: 1;
    padding-left: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.code-block-wrapper {
    flex: 1;
}

.code-block-container {
    flex: 1;
    position: relative;
    height: 500px;
    perspective: 1000px;
}

.code-block {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    border-radius: 15px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center bottom;
}

.code-block:nth-child(1) {
    z-index: 3;
    transform: translateY(0) scale(1);
}

.code-block:nth-child(2) {
    z-index: 2;
    transform: translateY(15px) scale(0.95);
    opacity: 0.8;
}

.code-block:nth-child(3) {
    z-index: 1;
    transform: translateY(30px) scale(0.9);
    opacity: 0.6;
}

.code-block.active {
    z-index: 3;
    transform: translateY(0) scale(1);
    opacity: 1;
}

.code-block:not(.active):hover {
    transform: translateY(-5px) scale(0.98);
    opacity: 0.9;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

.code-header {
    background: linear-gradient(145deg, #dee2e6, #ced4da);
    padding: 12px 15px;
    display: flex;
    align-items: center;
    color: #495057;
    font-size: 0.9em;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.dots {
    display: flex;
    margin-right: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 6px;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}
.dot.red { 
    background: linear-gradient(145deg, #ff6b6b, #ee5a52); 
}
.dot.yellow { 
    background: linear-gradient(145deg, #feca57, #ff9f43); 
}
.dot.green { 
    background: linear-gradient(145deg, #48dbfb, #0abde3); 
}

.code-header .title {
    flex: 1;
    text-align: center;
    font-weight: 600;
    color: #343a40;
}

pre {
    margin: 0;
    padding: 20px;
    font-size: 14px;
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
    flex: 1;
    overflow-y: auto;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    color: #495057;
}

code .prompt { color: #28a745; font-weight: 600; }
code .path { color: #007bff; font-weight: 500; }
code .command { color: #6f42c1; font-weight: 500; }

/* Switcher */
.switcher {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.switch-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5em;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
    animation: shine 4s infinite ease-in-out;
}

.switch-btn:nth-child(2) {
    animation-delay: 0.3s;
}

.switch-btn:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes shine {
    0%, 100% {
        box-shadow: 0 0 5px rgba(138, 43, 226, 0.2);
    }
    50% {
        box-shadow: 0 0 20px 10px rgba(138, 43, 226, 0.7);
    }
}

.switch-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.switch-btn.active {
    background: #8a2be2;
    border-color: #a042f0;
}

/* Starry Bottle */
.starry-bottle-container {
    position: fixed;
    top: 20px;
    right: 30px;
    z-index: 1001;
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.starry-bottle-container.collapsed {
    transform: translateX(calc(100% - 40px));
}

.bottle-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bottle-toggle:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.bottle-content {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    transition: opacity 0.3s ease;
}

.starry-bottle-container.collapsed .bottle-content {
    opacity: 0;
    pointer-events: none;
}

.starry-bottle-container.collapsed .bottle-toggle i {
    transform: rotate(180deg);
}

.starry-bottle {
    position: relative;
    width: 28px;
    height: 40px;
    background: linear-gradient(to bottom, 
        rgba(100, 149, 237, 0.3), 
        rgba(25, 25, 112, 0.4));
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 4px 4px 8px 8px;
    overflow: hidden;
    cursor: pointer;
}

.bottle-cap {
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 6px;
    background: linear-gradient(to bottom, #8B4513, #654321);
    border-radius: 2px 2px 0 0;
}

.bottle-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, 
        rgba(135, 206, 250, 0.8), 
        rgba(30, 144, 255, 0.5));
    transition: height 0.2s ease-out;
}

.progress-text {
    color: white;
    font-size: 14px;
    text-shadow: 0 0 5px black;
}
.progress-text span {
    font-weight: bold;
}

#bg-type-display {
    color: white;
    font-size: 12px;
    background: rgba(0,0,0,0.3);
    padding: 3px 8px;
    border-radius: 10px;
}

#bg-switch-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-left: 10px;
}

#bg-switch-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

/* Section Titles */
.section-title {
    text-align: center;
    color: white;
    font-size: 2em;
    margin: 0 auto 30px auto;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    max-width: 1200px;
    padding: 0 20px;
    box-sizing: border-box;
}

/* Papers Section */
.filter-tags {
    text-align: center;
    margin-bottom: 25px;
}

.tag-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 15px;
    margin: 5px;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tag-btn:hover,
.tag-btn.active {
    background: #87CEFA;
    color: #1a1a1a;
    border-color: #87CEFA;
}

.papers-list {
    max-width: 800px;
    margin: 0 auto;
}

.paper-item {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 20px;
    border-left: 4px solid #87CEFA;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.paper-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(135, 206, 250, 0.2);
    background: rgba(255, 255, 255, 0.12);
    border-left-color: #5DADE2;
}

.paper-title {
    font-size: 1.2em;
    color: white;
    margin: 0 0 10px 0;
}

.paper-title a {
    color: #87CEFA;
    text-decoration: none;
    transition: all 0.3s ease;
}

.paper-title a:hover {
    color: #5DADE2;
    text-decoration: underline;
    text-shadow: 0 0 8px rgba(135, 206, 250, 0.5);
}

.paper-desc {
    font-size: 0.9em;
    color: #ccc;
    margin: 0;
}

.paper-tags .tag {
    background: rgba(255, 255, 255, 0.15);
    color: #87CEFA;
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.8em;
    margin-right: 8px;
}

/* Links Section */
.links-grid {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.link-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.4s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.link-card:hover {
    transform: translateY(-8px) scale(1.02);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 35px rgba(135, 206, 250, 0.15);
}

.link-card a {
    text-decoration: none;
    color: white;
    font-size: 1.2em;
    font-weight: bold;
}

.link-card a i {
    margin-right: 10px;
    color: #87CEFA;
}

/* About Section */
.about-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 30px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.about-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #87CEFA;
}

.about-text h3 {
    color: white;
    margin-top: 0;
}

.about-text p {
    color: #ccc;
    line-height: 1.8;
}

.about-text .highlight {
    color: #87CEFA;
    font-weight: bold;
}

/* Gallery Section */
.gallery-grid {
    max-width: 1000px;
    margin: 0 auto;
    columns: 3 250px;
    column-gap: 15px;
}

.gallery-item {
    margin-bottom: 15px;
    overflow: hidden;
    border-radius: 10px;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: all 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Map Section */
.map-container {
    margin-bottom: 50px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Terminal Styles */
#terminal-output {
    padding: 15px;
    flex-grow: 1;
    overflow-y: auto;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    color: #495057;
    line-height: 1.6;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
}

.input-area {
    display: flex;
    padding: 12px 15px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    background: linear-gradient(145deg, #f8f9fa, #e9ecef);
    align-items: center;
}

.input-area .prompt {
    color: #28a745;
    margin-right: 8px;
    font-weight: 600;
}

#terminal-input {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid #dee2e6;
    border-radius: 6px;
    color: #495057;
    flex-grow: 1;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    padding: 6px 10px;
    transition: all 0.3s ease;
}

#terminal-input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

/* Papers block styles */
.papers-list-container {
    height: calc(100% - 42px);
    overflow-y: auto;
    padding: 20px;
}

/* Footer */
#footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 10px 15px;
    font-size: 11px;
    z-index: 1001;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    line-height: 1.4;
}

#footer p {
    margin: 3px 0;
    font-size: 10px;
}

/* Background styles */
body {
    background: linear-gradient(
        135deg,
        #2c5530 0%,
        #4a7c59 15%,
        #6b8e23 25%,
        #87ceeb 35%,
        #b0e0e6 45%,
        #4682b4 55%,
        #2f4f4f 65%,
        #36454f 75%,
        #1c1c1c 85%,
        #000000 100%
    );
    background-attachment: fixed;
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 15% 25%, rgba(144,238,144,0.15) 0%, transparent 40%),
        radial-gradient(circle at 25% 60%, rgba(34,139,34,0.1) 0%, transparent 35%),
        radial-gradient(circle at 35% 15%, rgba(255,255,224,0.08) 0%, transparent 30%),
        radial-gradient(circle at 75% 30%, rgba(70,130,180,0.12) 0%, transparent 45%),
        radial-gradient(circle at 85% 70%, rgba(255,255,255,0.05) 0%, transparent 25%),
        radial-gradient(circle at 90% 45%, rgba(135,206,235,0.08) 0%, transparent 35%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.3) 0%, transparent 2px),
        radial-gradient(circle at 85% 80%, rgba(255,255,255,0.2) 0%, transparent 1px),
        radial-gradient(circle at 95% 60%, rgba(255,255,255,0.25) 0%, transparent 1.5px);
    pointer-events: none;
    z-index: -1;
}

body::after {
    content: '';
    position: fixed;
    bottom: 0;
    right: 0;
    width: 50%;
    height: 200px;
    background: linear-gradient(to top,
        rgba(0,0,0,0.3) 0%,
        rgba(70,130,180,0.1) 30%,
        transparent 100%
    );
    clip-path: polygon(
        0% 100%, 
        10% 80%, 
        15% 85%, 
        25% 70%, 
        30% 75%, 
        40% 60%, 
        45% 65%, 
        55% 50%, 
        60% 55%, 
        70% 40%, 
        75% 45%, 
        85% 30%, 
        90% 35%, 
        100% 20%, 
        100% 100%
    );
    pointer-events: none;
    z-index: -1;
    opacity: 0.6;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
        height: auto;
        min-height: 80vh;
    }
    
    .left-panel {
        flex: none;
        padding: 20px;
    }
    
    .right-panel {
        flex-direction: column;
        gap: 10px;
    }
    
    .switcher {
        flex-direction: row;
        justify-content: center;
        gap: 15px;
    }
    
    .about-container {
        flex-direction: column;
        text-align: center;
    }
    
    .gallery-grid {
        columns: 2 200px;
    }
    
    .nav {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .nav-btn {
        font-size: 14px;
        padding: 8px 12px;
    }
    
    #footer {
        font-size: 10px;
        padding: 10px 15px;
        line-height: 1.3;
    }
    
    #footer p {
        margin: 1px 0;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        columns: 1;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
}

/* Photo Wall Styles */
.photo-wall-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px 120px 20px; /* 增加底部padding避免被footer遮盖 */
}

.photo-wall {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    position: relative;
    height: 500px;
}

.photo-preview {
    width: 120px;
    height: 300px;
    overflow: hidden;
    border-radius: 10px;
    opacity: 0.4;
    filter: blur(2px);
    transition: all 0.3s ease;
    position: relative;
}

.photo-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-preview:hover {
    opacity: 0.7;
    filter: blur(1px);
}

.main-photo-frame {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.photo-timestamp {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.photo-frame {
    width: 400px;
    height: 300px;
    background: linear-gradient(145deg, #f0f0f0, #d0d0d0);
    padding: 15px;
    border-radius: 10px;
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.3),
        inset 0 2px 5px rgba(255, 255, 255, 0.5),
        inset 0 -2px 5px rgba(0, 0, 0, 0.1);
    position: relative;
}

.photo-frame::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 2px solid #888;
    border-radius: 5px;
    pointer-events: none;
}

.photo-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 5px;
    display: block;
}

.photo-caption {
    margin-top: 15px;
    display: flex;
    justify-content: center;
}

.caption-bubble {
    background: linear-gradient(145deg, #fff, #f8f9fa);
    border: 2px solid #e9ecef;
    border-radius: 20px;
    padding: 12px 20px;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 300px;
    text-align: center;
}

.caption-bubble span {
    color: #495057;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
}

.bubble-tail {
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #e9ecef;
}

.bubble-tail::after {
    content: '';
    position: absolute;
    top: 2px;
    left: -6px;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid #fff;
}

.photo-info {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.photo-info span {
    color: white;
    font-weight: bold;
}

.random-btn {
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    border: none;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.random-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.nav-btn-photo {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.nav-btn-photo:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.2);
}

/* Hide Content Button */
.hide-content-container {
    position: fixed;
    top: 20px;
    left: 30px;
    z-index: 1002;
}

.hide-content-btn {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.hide-content-btn:hover {
    background: rgba(0, 0, 0, 0.5);
    transform: scale(1.1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.hide-content-btn.hidden-mode {
    background: rgba(255, 255, 255, 0.2);
}

.hide-content-btn.hidden-mode:hover {
    background: rgba(255, 255, 255, 0.3);
}