:root {
    --bg-start: rgb(15, 25, 40);
    --bg-end: rgb(30, 45, 65);
    --panel-bg: rgba(25, 35, 55, 0.95);
    --text-primary: #FFFFFF;
    --text-secondary: #E0E0E0;
    --text-muted: #B0B0B0;
    --accent-gold: #FFDF96;
    --accent-blue: #87CEFA;
    --separator-teal: rgba(0, 128, 128, 0.5);
    --success: #28a745;
    --error: #dc3545;
    --danger: #ff4757;
    --border-radius: 12px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--bg-start), var(--bg-end));
    color: var(--text-primary);
    min-height: 100vh;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    width: 90%;
    max-width: 450px;
    animation: slideIn 0.3s ease-out;
}

.modal-large {
    max-width: 1200px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large::-webkit-scrollbar {
    width: 10px;
}

.modal-large::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
}

.modal-large::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 5px;
}

.modal-large::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-content h2 {
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    text-align: center;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--separator-teal);
}

.modal-header h2 {
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    color: var(--accent-gold);
    transform: rotate(90deg);
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: rgba(0, 0, 0, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: var(--font-family);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(135, 206, 250, 0.2);
    background-color: rgba(0, 0, 0, 0.5);
}

/* 按钮样式 */
.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-family);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--accent-blue), #6CB8F0);
    color: var(--bg-start);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #a7d8f8, var(--accent-blue));
    box-shadow: 0 6px 20px rgba(135, 206, 250, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.25);
}

.btn-secondary:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-blue);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #e74c5c);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(135deg, #ff3838, var(--danger));
    box-shadow: 0 6px 20px rgba(255, 71, 87, 0.4);
    transform: translateY(-2px);
}

/* 错误信息 */
.error-message {
    margin-top: 1rem;
    padding: 0.875rem 1rem;
    background-color: rgba(220, 53, 69, 0.25);
    color: #ffb3ba;
    border-radius: 8px;
    font-size: 0.95rem;
    border-left: 4px solid var(--error);
    display: none;
}

.error-message.show {
    display: block;
    animation: shake 0.5s;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

/* 头部样式 */
header {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    padding: 1.75rem 3rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    color: var(--accent-gold);
    font-size: 2rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* 主内容区 */
main {
    padding: 2.5rem 3rem;
    max-width: 1800px;
    margin: 0 auto;
}

/* 反馈列表 */
.feedback-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
    gap: 1.75rem;
    margin-bottom: 2.5rem;
}

.feedback-card {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 1.75rem;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.feedback-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-blue);
}

.feedback-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 2px solid var(--separator-teal);
}

.feedback-card-meta {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.feedback-card-meta span {
    display: block;
}

.feedback-card-meta strong {
    color: var(--accent-blue);
    margin-right: 0.5rem;
}

.image-badge {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-gold));
    color: var(--bg-start);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 700;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(135, 206, 250, 0.3);
}

.feedback-card-preview {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

/* 加载动画 */
.loading {
    text-align: center;
    padding: 4rem;
    color: var(--text-muted);
    font-size: 1.2rem;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
}

#pageInfo {
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 1.1rem;
    min-width: 100px;
    text-align: center;
}

/* 详情内容 */
.detail-content {
    padding: 1rem 0;
}

.metadata {
    background: rgba(0, 0, 0, 0.4);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent-gold);
}

.metadata p {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
}

.metadata p:last-child {
    margin-bottom: 0;
}

.metadata strong {
    color: var(--accent-gold);
    margin-right: 0.75rem;
}

.feedback-text {
    margin-bottom: 2.5rem;
}

.feedback-text h3 {
    color: var(--accent-blue);
    margin-bottom: 1.25rem;
    font-size: 1.3rem;
}

.feedback-text pre {
    background: rgba(0, 0, 0, 0.4);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--accent-blue);
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-height: 500px;
    overflow-y: auto;
}

.feedback-text pre::-webkit-scrollbar {
    width: 8px;
}

.feedback-text pre::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
}

.feedback-text pre::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 4px;
}

.feedback-images h3 {
    color: var(--accent-blue);
    margin-bottom: 1.25rem;
    font-size: 1.3rem;
}

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

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.image-grid img:hover {
    transform: scale(1.08);
    border-color: var(--accent-blue);
    box-shadow: 0 8px 24px rgba(135, 206, 250, 0.4);
}

.modal-actions {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 2px solid var(--separator-teal);
    display: flex;
    justify-content: flex-end;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .feedback-list {
        grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    }
}

@media (max-width: 1024px) {
    .feedback-list {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    }

    main {
        padding: 2rem 2rem;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1.25rem;
        padding: 1.5rem 1.5rem;
        text-align: center;
    }

    header h1 {
        font-size: 1.6rem;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

    main {
        padding: 1.5rem 1rem;
    }

    .feedback-list {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        padding: 1.75rem;
    }

    .modal-large {
        width: 95%;
        max-height: 85vh;
        padding: 1.75rem;
    }

    .image-grid {
        grid-template-columns: 1fr;
    }

    .pagination {
        flex-direction: column;
        gap: 1.25rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.4rem;
    }

    .feedback-card {
        padding: 1.5rem;
    }

    .modal-content h2 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
}