body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== 头部样式 ===== */
header {
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(0.75rem, 2vw, 1rem) 0;
    min-height: 3.5rem;
}

.logo {
    font-size: clamp(1.6rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.join-btn {
    background: linear-gradient(135deg, var(--success-color), #219653);
    color: var(--text-white);
    border: none;
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(0.5rem, 3vw, 0.75rem);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    font-size: clamp(1.6rem, 2vw, 2em);
    box-shadow: 0 0.125rem 0.5rem rgba(39, 174, 96, 0.3);
    position: relative;
    overflow: hidden;
}

.join-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.join-btn:hover {
    transform: translateY(-0.125rem);
    box-shadow: 0 0.25rem 0.75rem rgba(39, 174, 96, 0.4);
    background: linear-gradient(135deg, #219653, var(--success-color));
}

.join-btn:hover::before {
    left: 100%;
}

.join-btn:active {
    transform: translateY(0);
}

.container {
    width: 100%;
    max-width: 75rem;
    margin: 0 auto;
    padding: 0 0.9375rem;
}

/* ===== Select 选择器样式 ===== */
.area{
    display: flex;
    flex-direction: row;
    width : 96%;
    gap: clamp(0.5rem, 1.5vw, 0.75rem);
    margin : 0.5rem 2%;
}
.area-select-wrapper {
    flex: 1; /* 平均分布 */
    min-width: 0; /* 防止内容溢出 */
    padding: clamp(0.3rem, 0.8vw, 0.5rem) clamp(0.5rem, 1.5vw, 0.625rem);
    font-weight: 600;
    font-size: clamp(1.5rem, 2.5vw, 1.8rem);
}

.area-select {
    width: 100%;
    padding: clamp(0.5rem, 2vw, 0.75rem) clamp(0.75rem, 3vw, 1.25rem);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-color);
    box-shadow: var(--box-shadow);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right clamp(0.75rem, 3vw, 1.25rem) center;
    background-size: clamp(0.75rem, 2.5vw, 1rem);
    padding-right: clamp(2.5rem, 8vw, 3.5rem);
    transition: var(--transition);
}

.area-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 clamp(0.125rem, 0.5vw, 0.25rem) rgba(var(--primary-rgb), 0.2);
}

.area-select option {
    padding: clamp(0.5rem, 2vw, 0.75rem);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    background-color: var(--card-color);
    color: var(--text-color);
}

/* ===== 详情弹窗 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: clamp(0.5rem, 2vw, 1rem);
    overflow: hidden;
}

.modal-overlay.active {
    display: flex;
}
.modal-container {
    width: 95%;
    height: 85%;
    max-width: 1200px;
    background: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalAppear 0.3s ease;
    overflow-y: auto;
}

/* 物品类型特定样式 */
.item-rental .item-badge {
    background: linear-gradient(135deg, var(--primary-color), #3498db);
}

.item-idle .item-badge {
    background: linear-gradient(135deg, var(--secondary-color), #9b59b6);
}

.item-card {
    background: var(--card-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
    position: relative;
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.item-card:hover {
    transform: translateY(calc(-1 * clamp(0.25rem, 1vw, 0.5rem)));
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

.item-image {
    width: 100%;
    height: clamp(20rem, 30vw, 25rem);
    object-fit: cover;
    border-bottom: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
}

.item-image-placeholder {
    width: 100%;
    height: clamp(9.375rem, 30vw, 12.5rem);
    background: linear-gradient(135deg, var(--light-color), #e0e0e0);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: clamp(0.75rem, 2vw, 0.875rem);
    border-bottom: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
}

.item-content {
    padding: clamp(0.75rem, 2.5vw, 1rem);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.item-header {
    margin-bottom: clamp(0.5rem, 1.5vw, 0.75rem);
}

.item-title {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    color: var(--secondary-color);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: clamp(0.3125rem, 1vw, 0.5rem);
    word-break: break-word;
    overflow-wrap: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-location {
    display: flex;
    align-items: center;
    gap: clamp(0.25rem, 0.8vw, 0.375rem);
    color: var(--text-light);
    font-size: clamp(1.5rem, 2vw, 1.8rem);
}

.item-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: clamp(0.5rem, 1.5vw, 0.75rem);
    margin-bottom: clamp(0.75rem, 2.5vw, 1rem);
}

.detail-item {
    display: table-row;
    flex-direction: column;
    gap: clamp(0.125rem, 0.5vw, 0.25rem);
}

.detail-label {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    color: var(--text-light);
}

.detail-value {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    font-weight: 600;
    color: var(--text-color);
    word-break: break-word;
}

.item-price {
    margin-top: auto;
    padding-top: clamp(0.5rem, 1.5vw, 0.75rem);
    border-top: clamp(0.03125rem, 0.125vw, 0.0625rem) solid var(--border-color);
    text-align: right;
}

.price-label {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    color: var(--text-light);
    margin-bottom: clamp(0.125rem, 0.5vw, 0.25rem);
}

.price-value {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    font-weight: 700;
    color: var(--primary-color);
}

.price-unit {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    color: var(--text-light);
    margin-left: clamp(0.125rem, 0.5vw, 0.25rem);
}

.item-badge {
    position: absolute;
    top: clamp(0.5rem, 1.5vw, 0.625rem);
    left: clamp(0.5rem, 1.5vw, 0.625rem);
    padding: clamp(0.1875rem, 0.8vw, 0.3125rem) clamp(0.5rem, 1.5vw, 0.625rem);
    border-radius: clamp(0.75rem, 3vw, 1.25rem);
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    font-weight: 600;
    color: var(--text-white);
    z-index: 1;
}

.item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: clamp(0.5rem, 1.5vw, 0.75rem);
    padding-top: clamp(0.5rem, 1.5vw, 0.75rem);
    border-top: clamp(0.03125rem, 0.125vw, 0.0625rem) solid var(--border-color);
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    color: var(--text-light);
}

.item-contact {
    display: flex;
    align-items: center;
    gap: clamp(0.25rem, 0.8vw, 0.375rem);
}

.contact-icon {
    font-size: clamp(1.5rem, 2vw, 1.8rem);
}

.contact-btn {
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    padding: clamp(0.3125rem, 1.5vw, 0.5rem) clamp(0.5rem, 2vw, 1rem);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: clamp(1.5rem, 2vw, 1.8rem);
    font-weight: 600;
    white-space: nowrap;
}

.contact-btn:hover {
    background: var(--secondary-color);
    transform: translateY(calc(-1 * clamp(0.0625rem, 0.25vw, 0.125rem)));
    box-shadow: var(--box-shadow);
}


/* 发送消息 */
.modal-details-send-notice{
    width: 90%;
    background: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalAppear 0.3s ease;
}
.message-input {
    width: 100%;
    min-height: 10rem;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    transition: var(--transition);
    font-family: inherit;
}
        
        
/* 网格布局 */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(clamp(16.25rem, 45vw, 20rem), 1fr));
    gap: clamp(0.9375rem, 3vw, 1.5rem);
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

/* 筛选器 */
.filter-section {
    background: var(--card-color);
    border-radius: var(--border-radius);
    padding: clamp(0.75rem, 2.5vw, 1rem);
    margin-bottom: clamp(1rem, 3vw, 1.5rem);
    box-shadow: var(--box-shadow);
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(10rem, 25vw, 15rem), 1fr));
    gap: clamp(0.75rem, 2.5vw, 1rem);
    margin-bottom: clamp(0.75rem, 2.5vw, 1rem);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: clamp(0.3125rem, 1vw, 0.5rem);
}

.filter-label {
    font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    font-weight: 600;
    color: var(--text-color);
}

.filter-select,
.filter-input {
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(0.75rem, 2.5vw, 1rem);
    font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-color);
    transition: var(--transition);
    width: 100%;
}

.filter-select:focus,
.filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 clamp(0.125rem, 0.5vw, 0.25rem) rgba(var(--primary-rgb), 0.2);
}

.filter-actions {
    display: flex;
    gap: clamp(0.5rem, 2vw, 1rem);
    justify-content: flex-end;
}

.filter-btn {
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(1rem, 3vw, 1.5rem);
    border: none;
    border-radius: var(--border-radius);
    font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.filter-submit {
    background: var(--primary-color);
    color: var(--text-white);
}

.filter-submit:hover {
    background: var(--secondary-color);
    transform: translateY(calc(-1 * clamp(0.125rem, 0.5vw, 0.25rem)));
    box-shadow: var(--box-shadow);
}

.filter-reset {
    background: var(--light-color);
    color: var(--text-color);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
}

.filter-reset:hover {
    background: #e0e0e0;
    transform: translateY(calc(-1 * clamp(0.125rem, 0.5vw, 0.25rem)));
    box-shadow: var(--box-shadow);
}

/* 弹窗详情页 */
.modal-header {
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(9.375rem, 25vw, 12.5rem), 1fr));
    padding: clamp(1rem, 3vw, 1.5rem);
    justify-items: end;
}
.modal-title{
    font-size: clamp( 2rem, 2.2vw, 2.5rem);
    line-height: 3rem;
    color : var(--text-white);
}
.close-btn{
    background : none;
    border-radius: 50%;
    border: clamp(0.2rem, 0.25vw, 0.25rem) solid var(--text-white);
    width : 3rem;
    height: 3rem;
    line-height: clamp( 1.8rem, 2.2vw, 2.2rem);
    font-size: clamp( 1.8rem, 2.2vw, 2.2rem);
    color : var(--text-white);
    font-weight: bold;
}
.modal-details-notice{
    padding: clamp(1rem, 3vw, 1.5rem);
    border-bottom: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
}
.modal-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(12.5rem, 35vw, 15.625rem), 1fr));
    gap: clamp(1rem, 3vw, 1.5rem);
    background: var(--light-color);
    padding: clamp(1rem, 3vw, 1.5rem);
    border-radius: var(--border-radius);
}
.modal-details-address {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(12.5rem, 35vw, 15.625rem), 1fr));
    gap: clamp(1rem, 3vw, 1.5rem);
    background: var(--light-color);
    padding: 0 clamp(1rem, 3vw, 1.5rem);
    border-radius: var(--border-radius);
}

.modal-detail-label {
    font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    color: var(--text-light);
    font-weight: 600;
}

.modal-detail-value {
    font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    color: var(--text-color);
    font-weight: 500;
    word-break: break-word;
    overflow-wrap: break-word;
}

.modal-contact-info {
    padding: clamp(1rem, 3vw, 1.5rem);
    border-radius: var(--border-radius);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
}

.modal-contact-title {
    font-size: clamp(1.5rem, 2.8vw, 1.8rem);
    font-weight: 700;
}
.modal-body{
    font-size: clamp(1.5rem, 2.8vw, 1.8rem);
    padding: 0 clamp(1rem, 3vw, 1.5rem);
    border-top: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
}
.modal-body img{
    width : 84vw;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .type-switcher {
        flex-direction: row;
    }
    
    .items-grid {
        grid-template-columns: 1fr;
        gap: clamp(0.75rem, 2.5vw, 1rem);
    }
    
    .filter-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .modal-details-grid , .modal-contact-details {
        grid-template-columns: 1fr 1fr;
    }

    .filter-actions {
        flex-direction: column;
    }
    
    .filter-btn {
        width: 100%;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .items-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .items-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: clamp(1.5rem, 4vw, 2rem);
    }
}