/* ========== 各类按钮组件 ========== */
/* 图标按钮 */
.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    transition: background var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.icon-button:hover { background: rgba(255, 255, 255, 0.1); }
.icon-button:active { background: rgba(255, 255, 255, 0.2); }

/* 填充按钮 */
.filled-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 24px;
    border-radius: var(--md-sys-shape-corner-full);
    border: none;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.1px;
    cursor: pointer;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    box-shadow: var(--md-sys-elevation-level1);
}
.filled-button:hover {
    box-shadow: var(--md-sys-elevation-level2);
    transform: translateY(-1px);
}
.filled-button:active {
    transform: translateY(0);
    box-shadow: var(--md-sys-elevation-level1);
}
.filled-button.destructive {
    background: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
}

/* 轮廓按钮 */
.outlined-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 24px;
    border-radius: var(--md-sys-shape-corner-full);
    border: 1px solid var(--md-sys-color-outline);
    background: transparent;
    color: var(--md-sys-color-primary);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.1px;
    cursor: pointer;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.outlined-button:hover { background: var(--md-sys-color-primary-container); }

/* 色调填充按钮 */
.filled-tonal-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 24px;
    border-radius: var(--md-sys-shape-corner-full);
    border: none;
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.1px;
    cursor: pointer;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.filled-tonal-button:hover { box-shadow: var(--md-sys-elevation-level1); }

/* 文本按钮 */
.text-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 16px;
    border-radius: var(--md-sys-shape-corner-full);
    border: none;
    background: transparent;
    color: var(--md-sys-color-primary);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.1px;
    cursor: pointer;
    transition: background var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.text-button:hover { background: rgba(var(--md-sys-color-primary-rgb), 0.08); }

/* 迷你悬浮按钮 */
.fab-mini {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    box-shadow: var(--md-sys-elevation-level1);
    font-size: 14px;
}
.fab-mini:hover {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    transform: scale(1.1);
}

/* 回收站按钮 */
.trash-actions { display: flex; gap: 8px; margin-top: 12px; }
.trash-btn {
    flex: 1;
    padding: 8px 12px;
    border-radius: var(--md-sys-shape-corner-small);
    border: none;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.restore-btn {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}
.restore-btn:hover {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}
.delete-permanent-btn {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}
.delete-permanent-btn:hover {
    background: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
}

/* ========== 输入框组件 ========== */
/* 搜索框 */
.search-field {
    flex: 1;
    min-width: 200px;
    position: relative;
    display: flex;
    align-items: center;
}
.search-field .search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--md-sys-color-on-surface-variant);
    font-size: 20px;
    pointer-events: none;
}
.search-field input {
    width: 100%;
    height: 48px;
    padding: 0 48px 0 48px;
    border-radius: var(--md-sys-shape-corner-extra-large);
    border: 1px solid var(--md-sys-color-outline);
    background: var(--md-sys-color-surface);
    font-size: 14px;
    color: var(--md-sys-color-on-surface);
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.search-field input:focus {
    outline: none;
    border-color: var(--md-sys-color-primary);
    border-width: 2px;
    padding-left: 47px;
}
.search-field .clear-button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    display: none;
}
.search-field input:not(:placeholder-shown) + .clear-button { display: flex; }

/* 轮廓输入框 */
.text-field.outlined { position: relative; margin-top: 16px; }
.text-field.outlined input {
    width: 100%;
    height: 56px;
    padding: 16px;
    border-radius: var(--md-sys-shape-corner-extra-small);
    border: 1px solid var(--md-sys-color-outline);
    background: transparent;
    font-size: 16px;
    color: var(--md-sys-color-on-surface);
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.text-field.outlined label {
    position: absolute;
    left: 16px;
    top: 16px;
    padding: 0 4px;
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface-variant);
    font-size: 16px;
    pointer-events: none;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.text-field.outlined input:focus,
.text-field.outlined input:not(:placeholder-shown) {
    border-color: var(--md-sys-color-primary);
    border-width: 2px;
    padding-top: 17px;
}
.text-field.outlined input:focus + label,
.text-field.outlined input:not(:placeholder-shown) + label {
    top: -8px;
    font-size: 12px;
    color: var(--md-sys-color-primary);
}

/* 下拉选择框 */
.select-field.outlined { position: relative; margin-top: 16px; }
.select-field.outlined select {
    width: 100%;
    height: 56px;
    padding: 0 16px;
    border-radius: var(--md-sys-shape-corner-extra-small);
    border: 1px solid var(--md-sys-color-outline);
    background: transparent;
    font-size: 16px;
    color: var(--md-sys-color-on-surface);
    appearance: none;
    cursor: pointer;
}
.select-field.outlined label {
    position: absolute;
    left: 16px;
    top: 16px;
    padding: 0 4px;
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface-variant);
    font-size: 16px;
    pointer-events: none;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.select-field.outlined select:focus,
.select-field.outlined select:not([value=""]) {
    border-color: var(--md-sys-color-primary);
    border-width: 2px;
}
.select-field.outlined select:focus + label,
.select-field.outlined select:not([value=""]) + label {
    top: -8px;
    font-size: 12px;
    color: var(--md-sys-color-primary);
}
.select-field.outlined::after {
    content: 'expand_more';
    font-family: 'Material Icons';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--md-sys-color-primary);
    pointer-events: none;
    font-size: 20px;
}

/* ========== 下拉菜单通用 ========== */
.menu {
    position: fixed;
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-extra-large);
    box-shadow: var(--md-sys-elevation-level2);
    padding: 8px 0;
    min-width: 200px;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    max-height: 70vh;
    overflow-y: auto;
    pointer-events: none;
}
.menu.show {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    pointer-events: auto;
}
.menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 16px 8px 16px;
    font-weight: 600;
    font-size: 14px;
    color: var(--md-sys-color-on-surface);
}
.menu-content { padding: 4px 0; }
.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface);
    font-size: 14px;
    text-align: left;
    cursor: pointer;
    transition: background var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.menu-item:hover { background: var(--md-sys-color-surface-variant); }
.menu-item.destructive { color: var(--md-sys-color-error); }
.menu-item i { font-size: 20px; }

/* 分组下拉 */
.group-dropdown { top: 120px; right: 24px; min-width: 240px; }
.group-dropdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    cursor: pointer;
    transition: background var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    font-size: 14px;
    color: var(--md-sys-color-on-surface);
}
.group-dropdown-item:hover { background: var(--md-sys-color-surface-variant); }
.group-dropdown-item.active {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-weight: 600;
}
.group-delete-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    color: var(--md-sys-color-error);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}
.group-delete-btn:hover { background: var(--md-sys-color-error-container); }

/* ========== Dialog弹窗 ========== */
.dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    pointer-events: none;
}
.dialog-overlay.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
.dialog {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-extra-large);
    width: 90%;
    max-width: 560px;
    box-shadow: var(--md-sys-elevation-level3);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
}
.dialog-overlay.show .dialog { transform: scale(1) translateY(0); }

.dialog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 24px 16px 24px;
}
.dialog-title {
    font-size: var(--md-sys-typescale-title-large-size);
    font-weight: var(--md-sys-typescale-title-large-weight);
    color: var(--md-sys-color-on-surface);
}
.dialog-content {
    padding: 0 24px 24px 24px;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 14px;
    line-height: 20px;
}
.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 0 24px 24px 24px;
}