/* ═══════════════════════════════════════════════════════
   UI 组件库 — Modal · Dropdown · Pagination
   所有页面统一引用，零依赖
   ═══════════════════════════════════════════════════════ */

/* ─────────────────────────────────
   Modal
   ───────────────────────────────── */
.ui-modal {
    display: flex;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 300;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease;
}

.ui-modal.show {
    opacity: 1;
    visibility: visible;
}

.ui-modal-box {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 28px;
    width: 460px;
    max-width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    transition: transform 0.18s cubic-bezier(0.34, 1.3, 0.64, 1);
}

.ui-modal.show .ui-modal-box {
    transform: scale(1);
}

.ui-modal-box h3 {
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 700;
}

.ui-modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 24px;
}

@media (max-width: 768px) {
    .ui-modal-box {
        padding: 20px;
        margin-top: auto;
        max-height: 90vh;
    }
}

/* ─────────────────────────────────
   Dropdown
   ───────────────────────────────── */
.ui-dropdown {
    position: relative;
    display: inline-block;
}

.ui-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-family: inherit;
    color: var(--text-secondary);
    background: var(--surface);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    white-space: nowrap;
}

.ui-dropdown-trigger:hover {
    border-color: #cbd5e1;
}

.ui-dropdown.open .ui-dropdown-trigger {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.ui-dropdown-trigger .ui-dropdown-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
    opacity: 0.5;
}

.ui-dropdown.open .ui-dropdown-trigger .ui-dropdown-arrow {
    transform: rotate(180deg);
}

.ui-dropdown-menu {
    position: absolute;
    bottom: calc(100% + 4px);
    left: 0;
    min-width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 4px;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

/* 向下展开的下拉（用于弹窗内的表单下拉） */
.ui-dropdown.down .ui-dropdown-menu {
    bottom: auto;
    top: calc(100% + 4px);
    transform: translateY(-4px);
}
.ui-dropdown.down.open .ui-dropdown-menu {
    transform: translateY(0);
}

.ui-dropdown.open .ui-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ui-dropdown-item {
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast);
    white-space: nowrap;
}

.ui-dropdown-item:hover {
    background: var(--bg);
    color: var(--text);
}

.ui-dropdown-item.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

/* ─────────────────────────────────
   Pagination
   ───────────────────────────────── */
.ui-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.ui-pagination-left,
.ui-pagination-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ui-pagination-pages {
    display: flex;
    align-items: center;
    gap: 2px;
}

.ui-page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ui-page-btn:hover:not(:disabled):not(.active) {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.ui-page-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 600;
}

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

.ui-page-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    color: var(--text-muted);
    font-size: 14px;
    user-select: none;
}

.ui-jump-input {
    width: 52px;
    padding: 5px 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: inherit;
    text-align: center;
    outline: none;
    transition: border-color var(--transition-fast);
}

.ui-jump-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.ui-jump-input::-webkit-inner-spin-button,
.ui-jump-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.ui-jump-input[type=number] {
    -moz-appearance: textfield;
}