/* App Review Core Styles */
:root {
    --arc-primary: #534AB7;
    --arc-primary-light: #EEEDFE;
    --arc-danger: #E24B4A;
    --arc-danger-light: #FCEBEB;
    --arc-success: #639922;
    --arc-success-light: #EAF3DE;
    --arc-warning: #BA7517;
    --arc-warning-light: #FAEEDA;
    --arc-info: #378ADD;
    --arc-info-light: #E6F1FB;
    --arc-text: #1a1a1a;
    --arc-text-secondary: #666;
    --arc-text-tertiary: #999;
    --arc-border: #e5e5e5;
    --arc-bg: #fff;
    --arc-bg-secondary: #f7f7f7;
    --arc-radius: 12px;
    --arc-radius-sm: 8px;
}

/* === Layout === */
.arc-container {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 16px;
}

/* === App Header === */
.arc-app-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding: 20px 0;
    border-bottom: 1px solid var(--arc-border);
}
.arc-app-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--arc-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 22px;
    flex-shrink: 0;
}
.arc-app-header__info {
    flex: 1;
}
.arc-app-header__title {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--arc-text);
}
.arc-app-header__meta {
    font-size: 14px;
    color: var(--arc-text-secondary);
    margin: 0;
}
.arc-app-header__rating {
    text-align: right;
}
.arc-app-header__score {
    font-size: 28px;
    font-weight: 700;
}
.arc-app-header__max {
    font-size: 14px;
    color: var(--arc-text-tertiary);
}

/* === Breadcrumb (SEO) === */
.arc-breadcrumb {
    font-size: 13px;
    color: var(--arc-text-tertiary);
    margin-bottom: 16px;
    padding: 8px 0;
}
.arc-breadcrumb a {
    color: var(--arc-info);
    text-decoration: none;
}
.arc-breadcrumb a:hover {
    text-decoration: underline;
}
.arc-breadcrumb span {
    margin: 0 6px;
}

/* === Featured Section (SEO) === */
.arc-featured {
    margin-bottom: 28px;
}
.arc-featured__title {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 12px;
    color: var(--arc-text);
}
.arc-featured__list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.arc-featured__item {
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius);
    padding: 14px 16px;
}
.arc-featured__item--scam {
    border-left: 3px solid var(--arc-danger);
    border-radius: 0 var(--arc-radius) var(--arc-radius) 0;
}
.arc-featured__item--faq {
    border-left: 3px solid var(--arc-info);
    border-radius: 0 var(--arc-radius) var(--arc-radius) 0;
}

/* === Tabs === */
.arc-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--arc-border);
    margin-bottom: 20px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.arc-tab {
    flex: 1;
    min-width: 0;
    padding: 12px 8px;
    font-size: 14px;
    font-weight: 400;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--arc-text-secondary);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
    transition: color .2s, border-color .2s;
}
.arc-tab:hover {
    color: var(--arc-text);
}
.arc-tab--active {
    font-weight: 600;
    color: var(--arc-text);
    border-bottom-color: var(--arc-primary);
}
.arc-tab__count {
    font-size: 12px;
    color: var(--arc-text-tertiary);
    margin-left: 4px;
}

/* === Comment Box === */
.arc-comment-box {
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius);
    padding: 14px 16px;
    margin-bottom: 20px;
}
.arc-comment-box__inner {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.arc-comment-box textarea {
    flex: 1;
    border: none;
    background: var(--arc-bg-secondary);
    border-radius: var(--arc-radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    resize: none;
    min-height: 44px;
    max-height: 200px;
    font-family: inherit;
    color: var(--arc-text);
    outline: none;
    transition: min-height .2s;
}
.arc-comment-box textarea:focus {
    min-height: 80px;
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
}
.arc-comment-box__footer {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    padding-left: 46px;
}
.arc-comment-box__upload {
    font-size: 13px;
    color: var(--arc-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    padding: 0;
}
.arc-comment-box__upload:hover {
    color: var(--arc-text);
}
.arc-comment-box__submit {
    margin-left: auto;
    background: var(--arc-primary);
    color: #fff;
    border: none;
    border-radius: var(--arc-radius-sm);
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity .2s;
}
.arc-comment-box__submit:hover {
    opacity: .9;
}
.arc-comment-box__submit:disabled {
    opacity: .5;
    cursor: not-allowed;
}
.arc-comment-box__previews {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    padding-left: 46px;
    flex-wrap: wrap;
}
.arc-comment-box__preview {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: var(--arc-radius-sm);
    overflow: hidden;
}
.arc-comment-box__preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.arc-comment-box__preview-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(0,0,0,.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* === Guest Info === */
.arc-guest-info {
    display: none;
    gap: 8px;
    margin-top: 8px;
    padding-left: 46px;
}
.arc-guest-info.visible {
    display: flex;
}
.arc-guest-info input {
    flex: 1;
    padding: 8px 12px;
    font-size: 13px;
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius-sm);
    outline: none;
    font-family: inherit;
}

/* === Avatar === */
.arc-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
    background: var(--arc-primary-light);
    color: var(--arc-primary);
}
.arc-avatar--sm {
    width: 28px;
    height: 28px;
    font-size: 12px;
}

/* === Comment === */
.arc-comment {
    margin-bottom: 12px;
}
.arc-comment__pinned {
    font-size: 12px;
    color: var(--arc-primary);
    font-weight: 600;
    margin-bottom: 4px;
    padding-left: 46px;
}
.arc-comment__inner {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius);
    padding: 14px 16px;
}
.arc-comment__body {
    flex: 1;
    min-width: 0;
}
.arc-comment__meta {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}
.arc-comment__author {
    font-size: 14px;
    font-weight: 600;
    color: var(--arc-text);
}
.arc-comment__in {
    font-size: 12px;
    color: var(--arc-text-tertiary);
}
.arc-comment__app-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--arc-info);
    text-decoration: none;
}
.arc-comment__app-link:hover {
    text-decoration: underline;
}
.arc-comment__time {
    font-size: 12px;
    color: var(--arc-text-tertiary);
}
.arc-comment__content {
    font-size: 14px;
    line-height: 1.6;
    color: var(--arc-text);
    word-wrap: break-word;
}
.arc-comment__content p {
    margin: 0 0 6px;
}
.arc-comment__content p:last-child {
    margin-bottom: 0;
}

/* === Comment Images === */
.arc-comment__images {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    flex-wrap: wrap;
}
.arc-comment__images img {
    max-width: 200px;
    max-height: 160px;
    border-radius: var(--arc-radius-sm);
    object-fit: cover;
    cursor: pointer;
    transition: opacity .2s;
}
.arc-comment__images img:hover {
    opacity: .85;
}
.arc-comment__images--sm img {
    max-width: 120px;
    max-height: 90px;
}
.arc-comment__image-link {
    display: inline-block;
}

/* === Comment Actions === */
.arc-comment__actions {
    display: flex;
    gap: 14px;
    margin-top: 8px;
    align-items: center;
}
.arc-btn-like,
.arc-btn-reply {
    font-size: 13px;
    color: var(--arc-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: inherit;
}
.arc-btn-like:hover,
.arc-btn-reply:hover {
    color: var(--arc-text);
}
.arc-btn-like--active {
    color: var(--arc-primary);
    font-weight: 600;
}
.arc-btn-view {
    font-size: 12px;
    color: var(--arc-info);
    text-decoration: none;
    margin-left: auto;
}
.arc-btn-view:hover {
    text-decoration: underline;
}

/* === Replies === */
.arc-replies {
    margin-top: 12px;
    padding-left: 12px;
    border-left: 2px solid var(--arc-border);
}
.arc-reply {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    margin-bottom: 10px;
}
.arc-reply__body {
    flex: 1;
    min-width: 0;
}
.arc-btn-more-replies {
    font-size: 13px;
    color: var(--arc-info);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 0;
    font-family: inherit;
}

/* === Reply Box === */
.arc-reply-box__inner {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 10px;
}
.arc-reply-input {
    flex: 1;
    background: var(--arc-bg-secondary);
    border: none;
    border-radius: 20px;
    padding: 8px 14px;
    font-size: 13px;
    outline: none;
    font-family: inherit;
    color: var(--arc-text);
}
.arc-reply-input:focus {
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
}
.arc-reply-submit {
    background: none;
    border: none;
    color: var(--arc-info);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}

/* === Badges === */
.arc-badge {
    font-size: 11px;
    padding: 1px 8px;
    border-radius: var(--arc-radius-sm);
    font-weight: 500;
    white-space: nowrap;
}
.arc-badge--info {
    background: var(--arc-info-light);
    color: var(--arc-info);
}
.arc-badge--danger {
    background: var(--arc-danger-light);
    color: var(--arc-danger);
}
.arc-badge--success {
    background: var(--arc-success-light);
    color: var(--arc-success);
}
.arc-badge--warning {
    background: var(--arc-warning-light);
    color: var(--arc-warning);
}

/* === Load More === */
.arc-load-more {
    text-align: center;
    padding: 16px 0;
}
.arc-load-more button {
    font-size: 14px;
    color: var(--arc-info);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

/* === Spinner === */
.arc-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--arc-border);
    border-top-color: var(--arc-primary);
    border-radius: 50%;
    animation: arc-spin .6s linear infinite;
}
@keyframes arc-spin {
    to { transform: rotate(360deg); }
}

/* === No Reply Prompt === */
.arc-no-reply {
    background: var(--arc-bg-secondary);
    border-radius: var(--arc-radius-sm);
    padding: 8px 12px;
    margin-top: 8px;
    border-left: 3px solid var(--arc-warning);
    border-radius: 0;
}
.arc-no-reply p {
    font-size: 13px;
    color: var(--arc-warning);
    margin: 0;
}

/* === Optimistic Comment (sending) === */
.arc-comment--sending {
    opacity: .6;
}
.arc-comment--failed {
    border-color: var(--arc-danger);
}
.arc-comment--failed .arc-comment__inner {
    border-color: var(--arc-danger);
}

/* === Homepage === */
.arc-homepage-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 16px 0;
}
.arc-homepage-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
    color: var(--arc-text);
}
.arc-homepage-header p {
    font-size: 13px;
    color: var(--arc-text-secondary);
    margin: 4px 0 0;
}
.arc-btn-add-app {
    background: var(--arc-primary);
    color: #fff;
    border: none;
    border-radius: var(--arc-radius-sm);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

/* === Quick Stats === */
.arc-quick-stats {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.arc-stat-card {
    flex-shrink: 0;
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: border-color .2s;
}
.arc-stat-card:hover {
    border-color: var(--arc-primary);
}

/* === App List === */
.arc-section-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 14px;
    color: var(--arc-text);
}
.arc-app-card {
    display: flex;
    gap: 12px;
    align-items: center;
    background: var(--arc-bg);
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius);
    padding: 12px 16px;
    margin-bottom: 8px;
    text-decoration: none;
    color: inherit;
    transition: border-color .2s;
}
.arc-app-card:hover {
    border-color: var(--arc-primary);
}
.arc-app-card__icon {
    width: 42px;
    height: 42px;
    border-radius: var(--arc-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}
.arc-app-card__info {
    flex: 1;
    min-width: 0;
}
.arc-app-card__name {
    font-size: 14px;
    font-weight: 600;
    color: var(--arc-text);
}
.arc-app-card__count {
    font-size: 12px;
    color: var(--arc-text-secondary);
    margin-top: 2px;
}
.arc-app-card__rating {
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}

/* === Search === */
.arc-search {
    position: relative;
    margin-bottom: 16px;
}
.arc-search input {
    width: 100%;
    padding: 10px 16px;
    font-size: 14px;
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius-sm);
    outline: none;
    font-family: inherit;
    box-sizing: border-box;
    color: var(--arc-text);
}
.arc-search input:focus {
    border-color: var(--arc-primary);
}

/* === Filter Tags === */
.arc-filters {
    display: flex;
    gap: 6px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.arc-filter-tag {
    font-size: 12px;
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid var(--arc-border);
    background: var(--arc-bg);
    color: var(--arc-text-secondary);
    cursor: pointer;
    text-decoration: none;
    transition: all .2s;
}
.arc-filter-tag:hover,
.arc-filter-tag--active {
    background: var(--arc-primary);
    color: #fff;
    border-color: var(--arc-primary);
}

/* === Modal === */
.arc-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,.45);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.arc-modal-overlay.visible {
    display: flex;
}
.arc-modal {
    background: var(--arc-bg);
    border-radius: var(--arc-radius);
    padding: 24px;
    width: 100%;
    max-width: 440px;
    max-height: 90vh;
    overflow-y: auto;
}
.arc-modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}
.arc-modal__title {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
}
.arc-modal__close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--arc-text-tertiary);
    cursor: pointer;
    padding: 4px 8px;
}
.arc-modal label {
    font-size: 13px;
    color: var(--arc-text-secondary);
    display: block;
    margin-bottom: 6px;
}
.arc-modal input[type="text"],
.arc-modal textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius-sm);
    outline: none;
    font-family: inherit;
    box-sizing: border-box;
    color: var(--arc-text);
}
.arc-modal textarea {
    resize: none;
    height: 80px;
}

/* === Alert boxes in modal === */
.arc-alert {
    border-radius: var(--arc-radius-sm);
    padding: 12px 14px;
    margin: 10px 0 14px;
}
.arc-alert--warning {
    background: var(--arc-warning-light);
}
.arc-alert--warning p {
    color: #854F0B;
}
.arc-alert--success {
    background: var(--arc-success-light);
}
.arc-alert--success p {
    color: #27500A;
}
.arc-alert p {
    margin: 0;
    font-size: 13px;
}
.arc-alert p strong {
    font-size: 14px;
    display: block;
    margin-bottom: 4px;
}

/* === Responsive === */
@media (max-width: 640px) {
    .arc-app-header {
        flex-wrap: wrap;
    }
    .arc-tabs {
        gap: 0;
    }
    .arc-tab {
        font-size: 13px;
        padding: 10px 6px;
    }
    .arc-comment__images img {
        max-width: 140px;
        max-height: 120px;
    }
    .arc-quick-stats {
        gap: 8px;
    }
    .arc-homepage-header {
        flex-wrap: wrap;
        gap: 12px;
    }
}

/* === Post Topic Button === */
.arc-btn-post-topic {
    background: #0F6E56;
    color: #fff;
    border: none;
    border-radius: var(--arc-radius-sm);
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}
.arc-btn-post-topic:hover {
    opacity: .9;
}

/* === Topic Modal === */
.arc-topic-app-item:hover {
    background: var(--arc-bg-secondary);
}
.arc-topic-tab {
    font-size: 12px;
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid var(--arc-border);
    background: var(--arc-bg);
    color: var(--arc-text-secondary);
    cursor: pointer;
    transition: all .2s;
}
.arc-topic-tab:hover {
    border-color: var(--arc-primary);
    color: var(--arc-primary);
}
.arc-topic-tab--active {
    background: var(--arc-primary);
    color: #fff;
    border-color: var(--arc-primary);
}
#arc-topic-app-dropdown {
    border: 1px solid var(--arc-border);
    border-radius: var(--arc-radius-sm);
    max-height: 200px;
    overflow-y: auto;
}
#arc-topic-previews {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}