:root {
    --bg-primary: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #334155;
    --bg-term: #020617;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #a78bfa;
    --accent-hover: #8b5cf6;
    --border: #475569;
    --success: #22c55e;
    --warn: #f59e0b;
    --danger: #ef4444;
    --info: #38bdf8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 24px 16px 40px;
    background-image:
        radial-gradient(ellipse at top, #1e293b 0%, transparent 55%),
        radial-gradient(circle at 85% 15%, rgba(167, 139, 250, 0.10) 0%, transparent 40%);
}

.mono, .terminal, code {
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 6px;
    background: linear-gradient(135deg, var(--accent), #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* 卡片 */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 20px;
    margin-bottom: 16px;
    box-shadow: 0 10px 30px rgba(2, 6, 23, 0.35);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 16px;
}

.grid > .card {
    margin-bottom: 0;
}

@media (max-width: 980px) {
    .grid {
        grid-template-columns: minmax(0, 1fr);
    }
    .grid > .card {
        margin-bottom: 16px;
    }
}

/* 布局工具 */
.row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

/* 不用 flex gap：部分浏览器（旧 Chromium / 旧 WebKit）对 flex 容器的 gap 不生效，
   会让按钮、下拉框直接贴在一起，改用 margin 保证间距 */
.row > * + * {
    margin-left: 10px;
}

/* 卡片内相邻两行之间留出垂直空隙，避免上下行粘在一起 */
.card > .row + .row,
.card > .row + .hint {
    margin-top: 10px;
}

/* 标题右侧的动作按钮组 */
.actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.actions > * + * {
    margin-left: 10px;
}

.row-between {
    justify-content: space-between;
}

.grow {
    flex: 1;
    min-width: 0;
}

.field {
    margin-bottom: 14px;
}

.field-row {
    display: flex;
    flex-wrap: wrap;
}

/* 不依赖 flex gap，旧浏览器下也能保持间距 */
.field-row > .field + .field {
    margin-left: 12px;
}

.field-row > .field {
    flex: 1;
    min-width: 130px;
}

.field-label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.hint {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 8px;
}

/* 输入控件 */
.select, .text-input {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 9px 12px;
    font-size: 0.88rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

.text-input.mono {
    font-family: 'JetBrains Mono', monospace;
}

.select:focus, .text-input:focus {
    border-color: var(--accent);
}

.select-sm {
    padding: 6px 10px;
    font-size: 0.82rem;
}

/* 按钮 */
.btn {
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 9px 16px;
    font-size: 0.88rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-primary {
    background: var(--accent);
    color: #1e1b4b;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    border-color: var(--border);
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--text-primary);
}

.btn-danger {
    background: transparent;
    border-color: var(--danger);
    color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: #fff;
}

.chip {
    background: transparent;
    border: 1px dashed var(--border);
    border-radius: 999px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 4px 10px;
    cursor: pointer;
    transition: all 0.15s;
    font-family: 'JetBrains Mono', monospace;
}

.chip:hover {
    border-style: solid;
    border-color: var(--accent);
    color: var(--text-primary);
}

.chips {
    display: flex;
    flex-wrap: wrap;
}

.chips > * + * {
    margin-left: 6px;
}

.badge {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    white-space: nowrap;
}

.badge.ok {
    color: var(--success);
    border-color: rgba(34, 197, 94, 0.5);
    background: rgba(34, 197, 94, 0.12);
}

.badge.warn {
    color: var(--warn);
    border-color: rgba(245, 158, 11, 0.5);
    background: rgba(245, 158, 11, 0.12);
}

.check {
    display: inline-flex;
    align-items: center;
    font-size: 0.82rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.check > * + * {
    margin-left: 8px;
}

.check-sm {
    font-size: 0.76rem;
}

.check input {
    accent-color: var(--accent);
    width: 15px;
    height: 15px;
}

/* 拖拽区 */
.dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 92px;
    padding: 14px;
    border: 1.5px dashed var(--border);
    border-radius: 10px;
    background: rgba(51, 65, 85, 0.35);
    cursor: pointer;
    text-align: center;
    transition: all 0.15s;
}

.dropzone:hover, .dropzone.dragging {
    border-color: var(--accent);
    background: rgba(167, 139, 250, 0.08);
}

.dropzone.has-file {
    border-style: solid;
    border-color: rgba(34, 197, 94, 0.6);
}

.dropzone-text {
    font-size: 0.88rem;
    color: var(--text-primary);
}

.dropzone-meta {
    font-size: 0.76rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    word-break: break-all;
}

/* 高级选项 */
.advanced {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 14px;
    background: rgba(15, 23, 42, 0.35);
}

.advanced summary {
    cursor: pointer;
    font-size: 0.84rem;
    color: var(--text-secondary);
    outline: none;
}

.advanced summary:hover {
    color: var(--text-primary);
}

.advanced-body {
    padding-top: 12px;
}

/* 进度条 */
.progress-wrap {
    margin: 6px 0 14px;
}

.progress-track {
    height: 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.18);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), var(--info));
    transition: width 0.2s ease;
}

.progress-fill.error {
    background: linear-gradient(90deg, var(--danger), #f97316);
}

.progress-fill.done {
    background: linear-gradient(90deg, var(--success), #4ade80);
}

.progress-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 6px;
}

/* 标签页 */
.tabs {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.tabs > * + * {
    margin-left: 8px;
}

.tab {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s;
}

.tab.active {
    background: rgba(167, 139, 250, 0.16);
    border-color: var(--accent);
    color: var(--text-primary);
}

.tabs-right {
    margin-left: auto;
    display: flex;
    align-items: center;
}

.tabs-right > * + * {
    margin-left: 10px;
}

/* 终端 */
.terminal {
    height: 380px;
    overflow-y: auto;
    background: var(--bg-term);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 0.78rem;
    line-height: 1.65;
    white-space: pre-wrap;
    word-break: break-all;
}

.terminal .line {
    display: block;
}

.terminal .line.prompt {
    color: var(--warn);
}

.terminal .line.err {
    color: var(--danger);
}

.terminal .line.ok {
    color: var(--success);
}

.terminal .line.dim {
    color: var(--text-secondary);
}

.terminal .ts {
    color: #64748b;
    margin-right: 6px;
    user-select: none;
}

.send-row {
    margin-top: 10px;
}

/* 设备信息 */
.device-info {
    margin-top: 12px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 8px;
    font-size: 0.8rem;
}

.device-info[hidden] {
    display: none;
}

.device-info .kv {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
}

.device-info .k {
    color: var(--text-secondary);
    font-size: 0.72rem;
    display: block;
    margin-bottom: 2px;
}

.device-info .v {
    font-family: 'JetBrains Mono', monospace;
    word-break: break-all;
}

footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.76rem;
    margin-top: 18px;
}

/* toast */
.toast {
    position: fixed;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 0.84rem;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s;
    box-shadow: 0 12px 30px rgba(2, 6, 23, 0.5);
    max-width: 80vw;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.error {
    border-color: var(--danger);
}

.toast.ok {
    border-color: var(--success);
}