/**
 * Huion Firmware Flasher - App Specific MD3E Stylesheet
 * 100% aligned with md3e.css and https://gd32.7white.de/
 * No emojis, Material Symbols Rounded only.
 */

/* 全域滾動條防抖 (避免內容增減引發捲軸出現/消失導致的頁面寬度跳動) */
html {
    overflow-y: scroll;
    scrollbar-gutter: stable;
}

/* 主容器 */
.flasher-container {
    max-width: 900px;
    width: 100%;
    box-sizing: border-box;
    margin: 0 auto;
    padding: 24px 20px 80px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 頂欄計數器徽章 */
.flasher-counter-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    padding: 6px 14px;
    border-radius: var(--md-shape-corner-full);
    font-size: 0.82rem;
    font-weight: 700;
}

.flasher-counter-badge .material-symbols-rounded {
    font-size: 16px;
}

/* 模式切換分段控制器 (Segmented Control) */
.mode-segmented-bar {
    display: flex;
    justify-content: center;
    margin-bottom: 6px;
}

.segmented-wrapper {
    display: inline-flex;
    background-color: var(--md-sys-color-surface-container);
    padding: 4px;
    border-radius: var(--md-shape-corner-full);
    border: 1px solid var(--md-sys-color-outline-variant);
    gap: 4px;
}

.segmented-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 0 22px;
    border-radius: var(--md-shape-corner-full);
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--md-motion-duration-short) var(--md-motion-standard);
}

.segmented-btn.active {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--md-sys-elevation-1);
}

.segmented-btn .material-symbols-rounded {
    font-size: 18px;
}

/* 步驟導引卡片 (Stepper Cards) */
.step-card-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.step-card {
    width: 100%;
    box-sizing: border-box;
    background: var(--md-sys-color-surface-container-low);
    border: 1.5px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-xl);
    padding: 22px 24px;
    transition: border-color var(--md-motion-duration-medium) var(--md-motion-standard),
                background-color var(--md-motion-duration-medium) var(--md-motion-standard),
                box-shadow var(--md-motion-duration-medium) var(--md-motion-standard);
}

.step-card.active {
    border-color: var(--md-sys-color-primary);
    background: var(--md-sys-color-surface-container);
    box-shadow: var(--md-sys-elevation-2);
}

.step-card.completed {
    border-color: var(--md-sys-color-secondary);
    background: var(--md-sys-color-surface-container-low);
}

.step-card.disabled {
    opacity: 0.55;
    pointer-events: none;
}

.step-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    width: 100%;
    box-sizing: border-box;
    gap: 16px;
}

.step-title-block {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.step-badge-num {
    width: 32px;
    height: 32px;
    border-radius: var(--md-shape-corner-full);
    background-color: var(--md-sys-color-surface-variant);
    color: var(--md-sys-color-on-surface-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.step-card.active .step-badge-num {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.step-card.completed .step-badge-num {
    background-color: var(--md-sys-color-secondary);
    color: var(--md-sys-color-on-secondary);
}

.step-title-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    white-space: nowrap;
}

.step-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    flex-shrink: 0;
    white-space: nowrap;
}

.step-content {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
}

/* 卡片內部膠囊進度條 (符合 MD3E 內嵌容器風格) */
.step-card .progress-card {
    background: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-l);
    padding: 14px 16px;
    margin-top: 14px;
    width: 100%;
    box-sizing: border-box;
}

.step-actions {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 韌體選擇卡片清單 (固定穩定欄寬，防止內容引發寬度跳動) */
.fw-selector-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 16px 0;
    width: 100%;
    box-sizing: border-box;
}

@media (max-width: 768px) {
    .fw-selector-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

.fw-card-item {
    background-color: var(--md-sys-color-surface-container-lowest);
    border: 1.5px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-l);
    padding: 16px;
    cursor: pointer;
    transition: border-color var(--md-motion-duration-short) var(--md-motion-standard),
                background-color var(--md-motion-duration-short) var(--md-motion-standard),
                box-shadow var(--md-motion-duration-short) var(--md-motion-standard);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-sizing: border-box;
    width: 100%;
    min-width: 0;
    word-break: break-word;
    overflow-wrap: break-word;
}

.fw-card-item:hover {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-surface-container-high);
}

.fw-card-item.selected {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    box-shadow: var(--md-sys-elevation-1);
}

.fw-card-title {
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 4px;
    min-width: 0;
    word-break: break-word;
}

.fw-card-tag {
    font-size: 0.78rem;
    font-weight: 600;
    opacity: 0.85;
}

/* Markdown 說明展示框 (防止長文字撐開卡片寬度) */
.md-desc-box {
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    background-color: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-l);
    padding: 18px 22px;
    margin-top: 14px;
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--md-sys-color-on-surface);
    word-break: break-word;
    overflow-wrap: break-word;
}

.md-desc-box h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--md-sys-color-primary);
    margin-bottom: 8px;
    word-break: break-word;
}

.md-desc-box h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 12px 0 6px;
    word-break: break-word;
}

.md-desc-box ul {
    padding-left: 20px;
    margin-bottom: 8px;
}

.md-desc-box li {
    margin-bottom: 4px;
    word-break: break-word;
}

.md-desc-box code {
    font-family: var(--font-family-mono);
    background-color: var(--md-sys-color-surface-container-high);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.82rem;
    word-break: break-all;
}

.md-desc-box pre {
    max-width: 100%;
    overflow-x: auto;
}

/* 還原拖曳區域 */
.restore-dropzone {
    border: 2px dashed var(--md-sys-color-outline);
    background-color: var(--md-sys-color-surface-container);
    border-radius: var(--md-shape-corner-xl);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--md-motion-duration-short) var(--md-motion-standard);
    margin: 16px 0;
}

.restore-dropzone:hover, .restore-dropzone.dragover {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-primary-container);
}

.restore-dropzone .material-symbols-rounded {
    font-size: 44px;
    color: var(--md-sys-color-primary);
    margin-bottom: 8px;
}

@media (max-width: 680px) {
    .flasher-container {
        padding: 16px 12px 60px;
    }
    .md3e-top-app-bar {
        padding: 12px 16px;
    }
}

/* MD3E 下拉選單與選擇器樣式 */
.md3e-field-wrapper {
    position: relative;
    width: 100%;
    box-sizing: border-box;
}

.md3e-field-wrapper.sm-field {
    max-width: 320px;
}

.md3e-select {
    width: 100%;
    height: 48px;
    background-color: var(--md-sys-color-surface-container-highest);
    border: 1.5px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-m);
    padding: 0 44px 0 16px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    transition: all var(--md-motion-duration-short) var(--md-motion-standard);
    box-sizing: border-box;
}

.md3e-select.sm-select {
    height: 38px;
    font-size: 0.88rem;
    padding: 0 36px 0 12px;
}

.md3e-select:focus {
    outline: none;
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 0 3px var(--md-sys-color-primary-container);
}

.md3e-field-wrapper .select-arrow {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--md-sys-color-outline);
    font-size: 20px;
}

/* ================= MD3E 韌體下拉選單元件 (MD3E Expressive Firmware Dropdown) ================= */
#step1Card {
    position: relative;
    z-index: 50; /* 確保下拉選單能覆蓋下方步驟卡片 */
}

.md3e-firmware-dropdown {
    position: relative;
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 14px;
}

.md3e-firmware-trigger {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    min-height: 62px;
    padding: 8px 18px;
    background-color: var(--md-sys-color-surface-container-high);
    border: 1.5px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-m);
    box-sizing: border-box;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    user-select: none;
    transition: background-color var(--md-motion-duration-short) var(--md-motion-standard),
                border-color var(--md-motion-duration-short) var(--md-motion-standard),
                box-shadow var(--md-motion-duration-short) var(--md-motion-standard);
}

.md3e-firmware-trigger:hover {
    background-color: var(--md-sys-color-surface-container-highest);
    border-color: var(--md-sys-color-primary);
}

.md3e-firmware-trigger:focus-visible {
    outline: none;
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-surface-container-highest);
    box-shadow: 0 0 0 3px rgba(67, 85, 185, 0.25);
}

.md3e-firmware-dropdown.open .md3e-firmware-trigger {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-surface-container-highest);
    box-shadow: 0 0 0 3px rgba(67, 85, 185, 0.25);
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}

.fw-trigger-leading-icon {
    font-size: 24px;
    color: var(--md-sys-color-primary);
    flex-shrink: 0;
}

.fw-trigger-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    gap: 2px;
}

.fw-trigger-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--md-sys-color-primary);
    line-height: 1.2;
}

.fw-trigger-value-row {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.fw-selected-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.fw-selected-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border-radius: var(--md-shape-corner-full);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    flex-shrink: 0;
}

.fw-trigger-arrow {
    font-size: 24px;
    color: var(--md-sys-color-outline);
    flex-shrink: 0;
    transition: transform var(--md-motion-duration-medium) var(--md-motion-spring),
                color var(--md-motion-duration-short) var(--md-motion-standard);
}

.md3e-firmware-dropdown.open .fw-trigger-arrow {
    transform: rotate(180deg);
    color: var(--md-sys-color-primary);
}

/* 浮動下拉選單 (Floating Elevation Menu) */
.md3e-firmware-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    width: 100%;
    background-color: var(--md-sys-color-surface-container-high);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-l);
    box-shadow: var(--md-sys-elevation-3), 0 12px 28px rgba(0, 0, 0, 0.35);
    padding: 8px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 1000;
    max-height: 320px;
    overflow-y: auto;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
    pointer-events: none;
    visibility: hidden;
    transition: opacity var(--md-motion-duration-short) var(--md-motion-standard),
                transform var(--md-motion-duration-medium) var(--md-motion-spring),
                visibility 0ms var(--md-motion-duration-short);
    transform-origin: top center;
}

.md3e-firmware-dropdown.open .md3e-firmware-menu {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
    visibility: visible;
    transition: opacity var(--md-motion-duration-short) var(--md-motion-standard),
                transform var(--md-motion-duration-medium) var(--md-motion-spring);
}

/* 選單單項 (Menu Item) */
.md3e-firmware-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 10px 14px;
    background: transparent;
    border: none;
    border-radius: var(--md-shape-corner-m);
    box-sizing: border-box;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    color: var(--md-sys-color-on-surface);
    user-select: none;
    transition: background-color var(--md-motion-duration-short) var(--md-motion-standard),
                transform var(--md-motion-duration-short) var(--md-motion-standard);
}

.md3e-firmware-item:hover {
    background-color: var(--md-sys-color-surface-container-highest);
    transform: translateX(2px);
}

.md3e-firmware-item.selected {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.md3e-firmware-item.selected .item-subtitle {
    color: var(--md-sys-color-on-primary-container);
    opacity: 0.85;
}

.md3e-firmware-item.selected .item-badge {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.item-left {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
    flex: 1;
}

.item-title {
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-subtitle {
    font-size: 0.78rem;
    color: var(--md-sys-color-on-surface-variant);
    display: flex;
    align-items: center;
    gap: 8px;
}

.item-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.item-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    background-color: var(--md-sys-color-surface-container);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-full);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.4px;
}

.item-check-icon {
    font-size: 18px;
    color: var(--md-sys-color-primary);
    opacity: 0;
    transition: opacity var(--md-motion-duration-short) var(--md-motion-standard);
}

.md3e-firmware-item.selected .item-check-icon {
    opacity: 1;
    color: var(--md-sys-color-on-primary-container);
}

/* 選單載入與空狀態 */
.md3e-firmware-state-msg {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px 16px;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.88rem;
    font-weight: 500;
    text-align: center;
}

.md3e-firmware-state-msg .material-symbols-rounded {
    font-size: 20px;
    color: var(--md-sys-color-primary);
}

/* 顯式展出的前置設定卡片 (Inline Setup Guide Card) */
.setup-guide-inline-card {
    background-color: var(--md-sys-color-surface-container);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-l);
    padding: 14px 18px;
    margin-bottom: 16px;
    box-sizing: border-box;
}

.setup-guide-inline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.setup-guide-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
}

.setup-guide-title .guide-title-icon {
    font-size: 20px;
    color: var(--md-sys-color-primary);
}

.guide-inline-tabs {
    display: flex;
    gap: 4px;
    background-color: var(--md-sys-color-surface-container-highest);
    padding: 3px;
    border-radius: var(--md-shape-corner-full);
}

.inline-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 30px;
    padding: 0 12px;
    border: none;
    border-radius: var(--md-shape-corner-full);
    background-color: transparent;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--md-motion-duration-short) var(--md-motion-standard);
}

.inline-tab-btn .material-symbols-rounded {
    font-size: 16px;
}

.inline-tab-btn.active {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--md-sys-elevation-1);
}

.inline-guide-body {
    animation: fadeIn 0.2s ease-in-out;
}

.inline-guide-desc {
    font-size: 0.84rem;
    color: var(--md-sys-color-on-surface-variant);
    margin: 0 0 8px 0;
    line-height: 1.4;
}

.inline-code-box {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    background-color: var(--md-sys-color-surface-container-highest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-m);
    padding: 10px 14px;
    gap: 12px;
    margin-bottom: 8px;
}

.inline-code-box code {
    font-family: 'JetBrains Mono', Consolas, Monaco, monospace;
    font-size: 0.8rem;
    line-height: 1.55;
    color: var(--md-sys-color-on-surface);
    white-space: pre-wrap;
    word-break: break-all;
    overflow-wrap: anywhere;
    overflow: visible;
    flex: 1;
    display: block;
    user-select: all;
}

.inline-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border: none;
    border-radius: var(--md-shape-corner-full);
    padding: 4px 10px;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    flex-shrink: 0;
    transition: background-color var(--md-motion-duration-short) var(--md-motion-standard);
}

.inline-copy-btn:hover {
    background-color: #cbceff;
}

.inline-copy-btn .material-symbols-rounded {
    font-size: 14px;
}

.inline-guide-note {
    font-size: 0.78rem;
    color: var(--md-sys-color-secondary);
    font-weight: 600;
    margin: 0;
}

.inline-guide-list {
    margin: 0;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.82rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.4;
}
}

.link-btn:hover {
    color: var(--md-sys-color-primary-container);
}

/* DFU 模式圖解教程卡片 */
.dfu-tutorial-card {
    background-color: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-l);
    overflow: hidden;
    margin-bottom: 16px;
}

.dfu-tutorial-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    cursor: pointer;
    user-select: none;
    background-color: var(--md-sys-color-surface-container-low);
    transition: background-color var(--md-motion-duration-short) var(--md-motion-standard);
}

.dfu-tutorial-header:hover {
    background-color: var(--md-sys-color-surface-container);
}

.dfu-tutorial-header .toggle-icon {
    font-size: 20px;
    color: var(--md-sys-color-outline);
    transition: transform var(--md-motion-duration-short) var(--md-motion-standard);
}

.dfu-tutorial-body {
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dfu-tutorial-body.collapsed {
    display: none;
}

.dfu-model-selector-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.dfu-tutorial-desc {
    font-size: 0.86rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}

.dfu-gif-container {
    display: flex;
    justify-content: center;
    background-color: var(--md-sys-color-surface-container);
    border-radius: var(--md-shape-corner-m);
    padding: 12px;
    overflow: hidden;
    border: 1px solid var(--md-sys-color-outline-variant);
}

.dfu-gif-preview {
    max-width: 100%;
    max-height: 280px;
    height: auto;
    object-fit: contain;
    border-radius: var(--md-shape-corner-s);
}

/* 頁面底部小字計數器 */
.flasher-footer {
    padding: 20px 24px 48px;
    text-align: center;
    margin-top: auto;
}

.footer-inner {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--md-sys-color-outline);
    font-size: 0.82rem;
    font-weight: 600;
}

.footer-inner .footer-icon {
    font-size: 15px;
    color: var(--md-sys-color-primary);
    opacity: 0.85;
}

/* 指引 Dialog 輔助樣式 */
.guide-top-btn {
    padding: 6px 14px;
    font-size: 0.85rem;
    gap: 6px;
}

.code-copy-box {
    display: flex;
    align-items: flex-start;
    background-color: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-m);
    padding: 10px 14px;
    gap: 12px;
    margin: 10px 0;
}

.code-copy-box code {
    flex: 1;
    font-family: var(--font-family-mono);
    font-size: 0.8rem;
    line-height: 1.55;
    color: var(--md-sys-color-on-surface);
    overflow: visible;
    white-space: pre-wrap;
    word-break: break-all;
    overflow-wrap: anywhere;
    user-select: all;
}

.btn-copy-cmd {
    padding: 6px 12px;
    font-size: 0.78rem;
    flex-shrink: 0;
    gap: 4px;
}

.guide-sub-note {
    font-size: 0.8rem;
    color: var(--md-sys-color-outline);
    font-style: italic;
}

.guide-step-list {
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--md-sys-color-on-surface);
}

.guide-step-list li {
    padding: 6px 10px;
    background-color: var(--md-sys-color-surface-container-lowest);
    border-radius: var(--md-shape-corner-s);
    border-left: 3px solid var(--md-sys-color-primary);
}

/* 多版本批次切換按鈕列 */
.dfu-version-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin: 4px 0;
    padding: 6px 10px;
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--md-shape-corner-m);
}

.dfu-version-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface-variant);
}

.dfu-version-pills {
    display: inline-flex;
    gap: 6px;
    flex-wrap: wrap;
}

.dfu-version-pill {
    padding: 4px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--md-shape-corner-full);
    border: 1px solid var(--md-sys-color-outline-variant);
    background-color: var(--md-sys-color-surface-container-lowest);
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--md-motion-duration-short) var(--md-motion-standard);
}

.dfu-version-pill:hover {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.dfu-version-pill.active {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-color: var(--md-sys-color-primary);
    box-shadow: var(--md-sys-elevation-1);
}

.dfu-multiversion-hint {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    background-color: var(--md-sys-color-surface-container);
    border-left: 3px solid var(--md-sys-color-primary);
    padding: 8px 12px;
    border-radius: var(--md-shape-corner-s);
    font-size: 0.82rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.5;
}

.dfu-multiversion-hint .material-symbols-rounded,
.dfu-multiversion-hint .dfu-hint-icon {
    font-size: 18px;
    color: var(--md-sys-color-primary);
    flex-shrink: 0;
    margin-top: 1px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.dfu-multiversion-hint .dfu-hint-text {
    flex: 1;
    line-height: 1.5;
}


/* 免責聲明與風險告知卡片 (MD3E Tertiary Container) */
.disclaimer-banner-card {
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
    border-radius: var(--md-shape-corner-xl);
    padding: 16px 20px;
    margin-bottom: 24px;
    box-shadow: var(--md-sys-elevation-1);
    border: 1px solid rgba(178, 94, 0, 0.15);
    transition: all var(--md-motion-duration-medium) var(--md-motion-standard);
}

.disclaimer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
}

.disclaimer-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.disclaimer-icon {
    font-size: 24px;
    color: var(--md-sys-color-tertiary);
    flex-shrink: 0;
}

.disclaimer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--md-sys-color-on-tertiary-container);
}

.disclaimer-toggle-icon-btn {
    background: transparent;
    border: none;
    color: var(--md-sys-color-on-tertiary-container);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--md-shape-corner-full);
    transition: background-color var(--md-motion-duration-short) ease;
}

.disclaimer-toggle-icon-btn:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .disclaimer-toggle-icon-btn:hover {
    background-color: rgba(255, 255, 255, 0.12);
}

.disclaimer-content {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .disclaimer-content {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.disclaimer-list {
    margin: 0;
    padding-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.85rem;
    line-height: 1.55;
}

.disclaimer-list li strong {
    color: var(--md-sys-color-on-tertiary-container);
}

/* 步驟 4 刷寫按鈕上方的安全提示 */
.flash-risk-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: var(--md-shape-corner-m);
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
    font-size: 0.82rem;
    font-weight: 600;
    margin-top: 12px;
    margin-bottom: 4px;
    border: 1px solid rgba(178, 94, 0, 0.15);
}

.flash-risk-hint .material-symbols-rounded {
    font-size: 18px;
    color: var(--md-sys-color-tertiary);
    flex-shrink: 0;
}

/* Footer 分隔符與免責註腳 */
.footer-sep {
    margin: 0 8px;
    opacity: 0.4;
}

.footer-disclaimer-text {
    font-size: 0.82rem;
    color: var(--md-sys-color-on-surface-variant);
    opacity: 0.85;
}

/* 刷機與還原二度確認警告對話框 */
.confirm-modal-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.confirm-info-dl {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 10px 16px;
    background-color: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-shape-corner-m);
    padding: 14px 16px;
    margin: 0;
    font-size: 0.88rem;
}

.confirm-info-dl dt {
    color: var(--md-sys-color-outline);
    font-weight: 500;
}

.confirm-info-dl dd {
    color: var(--md-sys-color-on-surface);
    font-weight: 600;
    margin: 0;
    word-break: break-all;
}

.confirm-warning-box {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background-color: rgba(186, 26, 26, 0.08);
    color: var(--md-sys-color-error);
    border: 1px solid rgba(186, 26, 26, 0.25);
    border-radius: var(--md-shape-corner-m);
    padding: 12px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.5;
}