:root {
    --bg-color: #0c0c0c;
    --card-bg: rgba(26, 26, 26, 0.8);
    --glass-bg: rgba(30, 30, 30, 0.4);
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: rgba(255, 255, 255, 0.1);
    --nav-height: 70px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

/* Layout */
header {
    height: var(--nav-height);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    background-color: rgba(14, 14, 14, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
}

nav {
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.2s;
}

nav a:hover,
nav a.active {
    color: var(--text-primary);
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - var(--nav-height));
}

/* Search Bar */
.search-container {
    margin-bottom: 2rem;
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.search-input {
    width: 100%;
    height: 44px;
    padding: 0 1rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    box-sizing: border-box;
}

select.search-input {
    width: auto;
    cursor: pointer;
    padding-right: 2rem;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1em;
}

/* User asked to remove arrow from search bar right side specifically if it's annoying */
/* If the user meant the select itself, I should remove it. 
   But "搜索栏右侧" usually refers to the text input being affected.
   I will keep it for the select but fix the input. 
   Wait, if they said "不需要", maybe I should just remove it.
   Let's try removing it from everywhere first to be safe, or just from the input.
   The input had it because of the class. 
*/

.search-input[type="text"] {
    background-image: none;
    padding-right: 1rem;
}


.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Content Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-color);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: #222;
}

.card-body {
    padding: 1rem;
}

.card-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
}

.card-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Detail Page Layout */
.detail-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    height: auto;
    max-width: 1400px;
    margin: 0 auto;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition-smooth);
}

.content-panel {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--border-color);
}

.content-panel img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.info-panel {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    overflow-y: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-color);
    color: white;
    border-radius: 12px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    gap: 0.5rem;
}

.btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #444;
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* Chat Box */
.chat-box {
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.chat-messages {
    height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    background: #111;
    border-radius: 8px;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Autocomplete */
.search-wrapper {
    position: relative;
    flex: 1;
    min-width: 280px;
    display: flex;
    align-items: stretch;
}

.autocomplete-items {
    position: absolute;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-top: none;
    z-index: 99;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--card-bg);
    border-radius: 0 0 8px 8px;
    max-height: 300px;
    overflow-y: auto;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}

.autocomplete-items div {
    padding: 10px;
    cursor: pointer;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
}

.autocomplete-items div:hover {
    background-color: #333;
}

.autocomplete-active {
    background-color: var(--accent-color) !important;
    color: #ffffff;
}

/* Masonry Layout */
.masonry-grid {
    column-count: 4;
    column-gap: 1.5rem;
}

@media (max-width: 1000px) {
    .masonry-grid {
        column-count: 3;
    }
}

@media (max-width: 700px) {
    .masonry-grid {
        column-count: 2;
    }
}

@media (max-width: 400px) {
    .masonry-grid {
        column-count: 1;
    }
}

@media (max-width: 900px) {
    .detail-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .info-panel {
        max-height: none !important;
    }
}

.masonry-item {
    break-inside: avoid;
    margin-bottom: 1.5rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.masonry-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    border-color: var(--accent-color);
}

.masonry-item img {
    width: 100%;
    display: block;
    height: auto;
}

.masonry-info {
    padding: 0.8rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    margin: 2% auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
}

.modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    z-index: 1001;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: var(--accent-color);
    text-decoration: none;
    cursor: pointer;
}

/* Page Loading Overlay */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(12, 12, 12, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.page-loader.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(59, 130, 246, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 1rem;
}

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

.loader-text {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1px;
}

/* Like Button Animation */
@keyframes heartBeat {
    0% {
        transform: scale(1);
    }

    14% {
        transform: scale(1.3);
    }

    28% {
        transform: scale(1);
    }

    42% {
        transform: scale(1.3);
    }

    70% {
        transform: scale(1);
    }
}

.like-animate {
    animation: heartBeat 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    margin-top: 3rem;
    background-color: rgba(14, 14, 14, 0.9);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-links .separator {
    color: var(--border-color);
}

/* Info Pages */
.info-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.info-page h1 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.info-page h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.info-page p,
.info-page ul {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.info-page ul {
    padding-left: 1.5rem;
}

.info-page li {
    margin-bottom: 0.5rem;
}

.info-page a {
    color: var(--accent-color);
    text-decoration: none;
}

.info-page a:hover {
    text-decoration: underline;
}

/* Form Styles */
.form-container {
    max-width: 600px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    box-sizing: border-box;
    font-family: inherit;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.success-message,
.error-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.success-message {
    background-color: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}