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

[hidden] {
    display: none !important;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
        "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #f5f6f8;
    color: #333;
}

button, input {
    font-family: inherit;
}

button {
    border: none;
    cursor: pointer;
}

.app {
    width: 100%;
    max-width: 520px;
    min-height: 100vh;
    margin: 0 auto;
    background: #fff;
    position: relative;
}

.top-bar {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border-bottom: 1px solid #eee;
    background: #fff;
}

.top-bar h1 {
    font-size: 22px;
    font-weight: 600;
    color: #222;
}

.back-btn {
    position: absolute;
    left: 16px;
    top: 10px;
    width: 42px;
    height: 42px;
    background: #f3f4f6;
    border-radius: 12px;
    font-size: 30px;
    color: #333;
}

.main-content {
    padding: 18px 18px 100px;
}

.search-box {
    display: flex;
    align-items: center;
    height: 46px;
    background: #f4f5f7;
    border-radius: 12px;
    padding: 0 8px 0 14px;
    margin-bottom: 18px;
}

.search-icon {
    font-size: 23px;
    color: #888;
    margin-right: 8px;
}

.search-box input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 15px;
}

.search-box button {
    background: #222;
    color: #fff;
    border-radius: 9px;
    padding: 8px 13px;
    font-size: 13px;
}

.category-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 22px;
}

.category-btn {
    flex: 1;
    height: 38px;
    border-radius: 10px;
    background: #f3f4f6;
    color: #666;
    font-size: 14px;
}

.category-btn.active {
    background: #222;
    color: #fff;
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 13px;
}

.section-title h2 {
    font-size: 18px;
    font-weight: 600;
}

#resultCount {
    font-size: 12px;
    color: #999;
}

.item-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.item-card {
    display: flex;
    gap: 13px;
    padding: 14px;
    border: 1px solid #eee;
    border-radius: 14px;
    background: #fff;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease;
}

.item-card.item-completed {
    opacity: .62;
    filter: grayscale(.7);
}

.item-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 18px rgba(0, 0, 0, .06);
}

.item-image {
    width: 86px;
    height: 86px;
    flex-shrink: 0;
    border-radius: 11px;
    background: #f0f1f3;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.item-info {
    flex: 1;
    min-width: 0;
}

.item-header {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 7px;
}

.item-title {
    font-size: 16px;
    font-weight: 600;
    color: #222;
}

.type-tag {
    font-size: 11px;
    padding: 3px 7px;
    border-radius: 6px;
    background: #f0f0f0;
    color: #555;
}

.item-location, .item-date {
    font-size: 13px;
    color: #777;
    margin-top: 5px;
}

.item-description {
    font-size: 12px;
    color: #999;
    margin-top: 6px;
    line-height: 1.5;
}

.empty-state {
    text-align: center;
    padding: 55px 20px;
    color: #999;
}

.empty-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.detail-card {
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 16px;
    background: #fff;
}

.detail-image {
    height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 14px;
    background: #f4f5f7;
    font-size: 64px;
    margin-bottom: 20px;
}

.detail-title-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}

.detail-title {
    font-size: 23px;
    color: #222;
}

.detail-status {
    display: inline-block;
    padding: 5px 9px;
    border-radius: 7px;
    background: #f0f0f0;
    color: #555;
    font-size: 12px;
}

.detail-description {
    margin: 18px 0;
    line-height: 1.9;
    font-size: 15px;
    color: #555;
    overflow-wrap: anywhere;
}

.detail-info-row {
    padding: 13px 0;
    border-bottom: 1px solid #eee;
    font-size: 14px;
    line-height: 1.6;
}

.detail-info-label {
    color: #999;
    margin-right: 10px;
}

.contact-card {
    margin-top: 18px;
    padding: 16px;
    background: #f7f7f8;
    border-radius: 12px;
}

.contact-card h3 {
    font-size: 16px;
    margin-bottom: 10px;
}

.contact-card p {
    font-size: 14px;
    line-height: 1.8;
    color: #666;
}

.primary-btn {
    width: 100%;
    padding: 13px;
    margin-top: 18px;
    border-radius: 11px;
    background: #222;
    color: white;
    font-size: 15px;
}

.secondary-btn {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    border: 1px solid #ddd;
    border-radius: 11px;
    background: #fff;
    color: #333;
    font-size: 14px;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 520px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-around;
    background: rgba(255, 255, 255, .97);
    border-top: 1px solid #eee;
}

.nav-btn {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: #999;
    gap: 3px;
}

.nav-btn span {
    font-size: 22px;
    line-height: 1;
}

.nav-btn small {
    font-size: 11px;
}

.nav-btn.active {
    color: #222;
}

@media (min-width: 700px) {
    body {
        padding: 25px 0;
    }

    .app {
        min-height: calc(100vh - 50px);
        border-radius: 18px;
        overflow: hidden;
        box-shadow: 0 8px 35px rgba(0, 0, 0, .08);
    }

    .bottom-nav {
        bottom: 25px;
        border-radius: 0 0 18px 18px;
    }
}
.form-card,
.success-card {
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 16px;
    background: #fff;
}

.form-card h2,
.success-card h2 {
    font-size: 21px;
    margin-bottom: 8px;
}

.form-tip {
    color: #999;
    font-size: 13px;
    margin-bottom: 22px;
}

#publishForm label,
#editForm label {
    display: block;
    margin: 17px 0 8px;
    color: #444;
    font-size: 14px;
    font-weight: 600;
}

#publishForm input,
#editForm input,
#publishForm select,
#editForm select,
#publishForm textarea,
#editForm textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e2e2;
    border-radius: 10px;
    background: #fff;
    color: #333;
    font-size: 14px;
    outline: none;
}

#publishForm input:focus,
#publishForm select:focus,
#publishForm textarea:focus {
    border-color: #777;
}

#publishForm textarea {
    resize: vertical;
    line-height: 1.6;
}

.success-card {
    text-align: center;
    padding: 40px 22px;
}

.success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: #e8f5e9;
    color: #258344;
    font-size: 38px;
    line-height: 64px;
}

.success-card p {
    margin: 12px 0 20px;
    color: #777;
    font-size: 14px;
    line-height: 1.7;
}

.mine-item-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.mine-item-actions button {
    padding: 7px 11px;
    border-radius: 8px;
    background: #f1f1f1;
    color: #333;
    font-size: 12px;
}

#editFeedback, #mineFeedback { padding: 12px; margin-bottom: 12px; border-radius: 8px; }
#editFeedback { background: #fff1f0; color: #a12622; }
#mineFeedback { background: #e8f5e9; color: #226638; }
#editType:disabled { background: #f4f5f7; color: #666; }


.app-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(20, 24, 32, .48);
}

.app-modal-backdrop[hidden] {
    display: none;
}

.app-modal {
    width: min(100%, 360px);
    padding: 24px;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 18px 55px rgba(0, 0, 0, .24);
}

.app-modal h2 {
    margin-bottom: 12px;
    color: #222;
    font-size: 18px;
}

.app-modal p {
    color: #555;
    line-height: 1.7;
}

.app-modal .primary-btn {
    margin-top: 22px;
}


.app-modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 22px;
}

.app-modal-actions .primary-btn,
.app-modal-actions .secondary-btn {
    width: auto;
    min-width: 84px;
    margin: 0;
    padding: 10px 16px;
}

.app-modal-actions .secondary-btn[hidden] {
    display: none;
}