/* 共用界面组件：统一弹窗（ui-dialog.js）、自定义下拉（ui-select.js）。
   后台和前台都加载；颜色跟着各自页面的变量走，没有就用这里的默认值。 */
:root {
    --ui-blue: #007aff;
    --ui-red: #ff3b30;
    --ui-text: #1d1d1f;
    --ui-muted: #6e6e73;
    --ui-rim: rgba(60, 60, 67, .14);
    --ui-glass: rgba(255, 255, 255, .86);
    --ui-font: inherit;
}

/* ---------- 弹窗 ---------- */
.ui-dialog-host {
    /* 要压在后台弹窗（modal-overlay 1000）和提示条（10000）之上 */
    position: fixed; inset: 0; z-index: 20000; display: grid; place-items: center; padding: 18px;
    opacity: 0; transition: opacity .22s ease; font-family: var(--ui-font);
}
.ui-dialog-host[hidden] { display: none; }
.ui-dialog-host.show { opacity: 1; }
.ui-dialog-backdrop { position: absolute; inset: 0; background: rgba(226, 232, 242, .55); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.ui-dialog {
    position: relative; width: min(420px, 100%); padding: 26px 24px 20px; border-radius: 26px; text-align: center;
    background: var(--ui-glass); -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .8), 0 24px 60px rgba(30, 50, 90, .18);
    transform: translateY(14px) scale(.96); transition: transform .45s cubic-bezier(.34, 1.56, .64, 1);
    color: var(--ui-text);
}
.ui-dialog-host.show .ui-dialog { transform: none; }
.ui-dialog-icon {
    width: 52px; height: 52px; margin: 0 auto 12px; border-radius: 50%; display: grid; place-items: center;
    background: rgba(0, 122, 255, .12); color: var(--ui-blue);
}
.ui-dialog-icon svg { width: 26px; height: 26px; }
.ui-dialog.is-danger .ui-dialog-icon { background: rgba(255, 59, 48, .12); color: var(--ui-red); }
.ui-dialog.is-alert .ui-dialog-icon { background: rgba(52, 199, 89, .14); color: #1f9d4d; }
.ui-dialog-title { margin: 0 0 6px; font-size: 18px; font-weight: 750; letter-spacing: -.01em; }
.ui-dialog-message { margin: 0; font-size: 14.5px; line-height: 1.65; color: var(--ui-muted); word-break: break-word; }
.ui-dialog-field { margin-top: 14px; text-align: left; }
.ui-dialog-field[hidden] { display: none; }
.ui-dialog-input, .ui-dialog-textarea {
    width: 100%; padding: 11px 14px; border: 0; border-radius: 14px; background: rgba(118, 118, 128, .1);
    box-shadow: inset 0 0 0 1px var(--ui-rim); font: inherit; font-size: 14px; color: var(--ui-text); outline: none;
}
.ui-dialog-input:focus, .ui-dialog-textarea:focus { box-shadow: inset 0 0 0 2px var(--ui-blue); background: #fff; }
.ui-dialog-textarea { resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; line-height: 1.5; }
.ui-dialog-actions { display: flex; gap: 10px; margin-top: 20px; }
.ui-dialog-btn {
    flex: 1; height: 42px; border: 0; border-radius: 999px; font: inherit; font-size: 15px; font-weight: 650; cursor: pointer;
    background: rgba(118, 118, 128, .12); color: var(--ui-text);
    transition: transform .3s cubic-bezier(.34, 1.56, .64, 1), background-color .2s ease, box-shadow .2s ease;
}
.ui-dialog-btn:hover { background: rgba(118, 118, 128, .18); }
.ui-dialog-btn:active { transform: scale(.96); }
.ui-dialog-btn:focus-visible { outline: 3px solid rgba(0, 122, 255, .35); outline-offset: 2px; }
.ui-dialog-btn.is-primary { background: var(--ui-blue); color: #fff; box-shadow: 0 8px 20px rgba(0, 122, 255, .28); }
.ui-dialog-btn.is-primary:hover { background: #1a86ff; }
.ui-dialog-btn.is-primary.is-danger { background: var(--ui-red); box-shadow: 0 8px 20px rgba(255, 59, 48, .25); }
.ui-dialog-btn.is-primary.is-danger:hover { background: #ff4d44; }
@media (max-width: 480px) {
    .ui-dialog { padding: 22px 18px 16px; border-radius: 22px; }
    .ui-dialog-actions { flex-direction: column-reverse; }
}

/* ---------- 下拉 ---------- */
select.ui-select-native {
    position: absolute !important; width: 1px !important; height: 1px !important; margin: -1px !important; padding: 0 !important;
    border: 0 !important; clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap; opacity: 0; pointer-events: none;
}
.ui-select {
    display: inline-flex; align-items: center; justify-content: space-between; gap: 8px; width: 100%; min-height: 40px;
    padding: 0 12px 0 14px; border: 0; border-radius: 12px; text-align: left; cursor: pointer; font: inherit; font-size: 14px;
    color: var(--ui-text); background: rgba(118, 118, 128, .08); box-shadow: inset 0 0 0 1px var(--ui-rim);
    transition: box-shadow .2s ease, background-color .2s ease, transform .3s cubic-bezier(.34, 1.56, .64, 1);
}
.ui-select:hover { background: rgba(118, 118, 128, .12); }
.ui-select:focus-visible, .ui-select[aria-expanded="true"] { outline: none; background: #fff; box-shadow: inset 0 0 0 2px var(--ui-blue); }
.ui-select.is-disabled { opacity: .55; cursor: not-allowed; }
.ui-select-label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ui-select-label.is-placeholder { color: var(--ui-muted); }
.ui-select-chevron { width: 16px; height: 16px; flex-shrink: 0; color: var(--ui-muted); transition: transform .3s cubic-bezier(.34, 1.56, .64, 1); }
.ui-select[aria-expanded="true"] .ui-select-chevron { transform: rotate(180deg); }
.ui-select.btn-sm, .ui-select.ui-select-inline { min-height: 34px; font-size: 13px; padding: 0 10px 0 12px; width: auto; }
/* 分页条里的“每页 N 条”：不占满整行，文字不折行 */
.per-page-selector { white-space: nowrap; }
.ui-select.per-page-select { width: auto; min-width: 84px; min-height: 32px; font-size: 13px; padding: 0 8px 0 12px; border-radius: 999px; }
.ui-select.per-page-select .ui-select-chevron { width: 14px; height: 14px; }
.ui-select-panel {
    position: fixed; z-index: 20100; padding: 6px; border-radius: 16px; overflow: auto; overscroll-behavior: contain;
    background: var(--ui-glass); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .8), 0 18px 48px rgba(30, 50, 90, .18);
    opacity: 0; transform: translateY(-6px) scale(.98); transform-origin: top center;
    transition: opacity .18s ease, transform .3s cubic-bezier(.34, 1.56, .64, 1);
}
.ui-select-panel.is-above { transform-origin: bottom center; transform: translateY(6px) scale(.98); }
.ui-select-panel.show { opacity: 1; transform: none; }
.ui-select-panel[hidden] { display: none; }
.ui-select-option {
    padding: 9px 12px; border-radius: 10px; font-size: 14px; color: var(--ui-text); cursor: pointer; white-space: nowrap;
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.ui-select-option.is-active { background: rgba(0, 122, 255, .1); }
.ui-select-option.is-selected { font-weight: 650; color: var(--ui-blue); }
.ui-select-option.is-selected::after { content: ''; width: 7px; height: 12px; border: solid var(--ui-blue); border-width: 0 2px 2px 0; transform: rotate(45deg); margin-right: 4px; flex-shrink: 0; }
.ui-select-option.is-disabled { opacity: .45; cursor: not-allowed; }
.ui-select-group { padding: 8px 12px 4px; font-size: 11.5px; font-weight: 700; letter-spacing: .04em; color: var(--ui-muted); }
.ui-select-empty { padding: 10px 12px; font-size: 13px; color: var(--ui-muted); }

/* ---------- 文件上传 ---------- */
input.ui-upload-native {
    position: absolute !important; width: 1px !important; height: 1px !important; margin: -1px !important; padding: 0 !important;
    border: 0 !important; clip: rect(0 0 0 0); overflow: hidden; opacity: 0; pointer-events: none; visibility: hidden;
}
.ui-upload { display: grid; gap: 10px; }
.ui-upload-drop {
    display: flex; align-items: center; gap: 12px; width: 100%; padding: 14px 16px; border: 1.5px dashed var(--ui-rim); border-radius: 16px;
    background: rgba(118, 118, 128, .06); color: var(--ui-text); text-align: left; cursor: pointer; font: inherit;
    transition: border-color .2s ease, background-color .2s ease, transform .3s cubic-bezier(.34, 1.56, .64, 1);
}
.ui-upload-drop:hover, .ui-upload-drop.is-over { border-color: var(--ui-blue); background: rgba(0, 122, 255, .06); }
.ui-upload-drop:active { transform: scale(.99); }
.ui-upload-drop:focus-visible { outline: 3px solid rgba(0, 122, 255, .35); outline-offset: 2px; }
.ui-upload-drop.has-files { border-style: solid; border-color: rgba(0, 122, 255, .35); }
.ui-upload-icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: rgba(0, 122, 255, .12); color: var(--ui-blue); flex-shrink: 0; }
.ui-upload-icon svg { width: 20px; height: 20px; }
.ui-upload-text { display: grid; gap: 2px; min-width: 0; }
.ui-upload-text strong { font-size: 14px; font-weight: 650; }
.ui-upload-text small { font-size: 12px; color: var(--ui-muted); }
.ui-upload-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; }
.ui-upload-item {
    position: relative; display: flex; align-items: center; gap: 10px; padding: 8px 34px 8px 8px; border-radius: 14px;
    background: rgba(255, 255, 255, .8); box-shadow: inset 0 0 0 1px var(--ui-rim);
}
.ui-upload-item img { width: 48px; height: 48px; border-radius: 10px; object-fit: cover; flex-shrink: 0; background: #eee; }
.ui-upload-file { width: 48px; height: 48px; border-radius: 10px; display: grid; place-items: center; background: rgba(118, 118, 128, .12); font-size: 10px; font-weight: 700; color: var(--ui-muted); flex-shrink: 0; }
.ui-upload-meta { display: grid; min-width: 0; }
.ui-upload-meta strong { font-size: 12.5px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ui-upload-meta small { font-size: 11.5px; color: var(--ui-muted); }
.ui-upload-remove {
    position: absolute; top: 6px; right: 6px; width: 24px; height: 24px; border: 0; border-radius: 50%; background: rgba(118, 118, 128, .14);
    color: var(--ui-text); font-size: 16px; line-height: 1; cursor: pointer; display: grid; place-items: center;
}
.ui-upload-remove:hover { background: var(--ui-red); color: #fff; }

/* 后台（冰川皮肤）里跟 .form-control 对齐 */
body.admin-theme .ui-select.form-control { min-height: 42px; border-radius: 14px; background: rgba(255, 255, 255, .72); box-shadow: inset 0 0 0 1px var(--g-rim, var(--ui-rim)); }
body.admin-theme .ui-select.form-control:hover { background: #fff; }
body.admin-theme .ui-select.form-control:focus-visible, body.admin-theme .ui-select.form-control[aria-expanded="true"] { background: #fff; box-shadow: inset 0 0 0 2px var(--g-blue, var(--ui-blue)); }
body.admin-theme .ui-dialog-host { font-family: var(--g-font, inherit); }
/* 前台（用户页）跟 .form-input 对齐 */
.redeem-page .ui-select.form-input { min-height: 46px; border-radius: 14px; background: var(--field, rgba(118, 118, 128, .08)); box-shadow: inset 0 0 0 1px var(--field-rim, var(--ui-rim)); padding-left: 14px; }
.redeem-page .field-wrap .ui-select.form-input { padding-left: 42px; }
.redeem-page .ui-select.form-input:focus-visible, .redeem-page .ui-select.form-input[aria-expanded="true"] { background: #fff; box-shadow: inset 0 0 0 2px var(--blue, var(--ui-blue)); }