:root {
    --bg-gradient-start: #c6e6fb;
    --bg-gradient-mid: #ccefdc;
    --bg-gradient-end: #f5d9e8;
    --card: #ffffff;
    --text: #132a46;
    --muted: #355676;
    --border: #a9c3da;
    --primary: #2f96bb;
    --primary-hover: #257c9b;
    --secondary: #f2f7fb;
    --secondary-text: #324f6e;
    --log-bg: #f3f9fe;
    --shadow: rgba(45, 78, 118, 0.12);
    --shadow-hover: rgba(45, 78, 118, 0.18);
    --button-gradient: linear-gradient(120deg, #2f96bb 0%, #4fb8c9 60%, #7fd0df 100%);
    --button-gradient-hover: linear-gradient(120deg, #257c9b 0%, #3ea3bb 60%, #6ac4d8 100%);
    --progress-bg: #e0eef9;
    --progress-border: #c6dbee;
    --progress-fill: linear-gradient(120deg, #3db7c9 0%, #74c5df 50%, #e7b6d6 100%);
}

[data-theme="dark"] {
    --bg-gradient-start: #0b1220;
    --bg-gradient-mid: #101a2f;
    --bg-gradient-end: #162846;
    --card: #0f1b2e;
    --text: #eaf2ff;
    --muted: #8fa2bf;
    --border: #26364f;
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary: #16243a;
    --secondary-text: #b8c6db;
    --log-bg: #16243a;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
    --button-gradient: linear-gradient(120deg, #2563eb 0%, #1e40af 60%, #1e3a8a 100%);
    --button-gradient-hover: linear-gradient(120deg, #3b82f6 0%, #2563eb 60%, #1e40af 100%);
    --progress-bg: #18273f;
    --progress-border: #26364f;
    --progress-fill: linear-gradient(120deg, #2563eb 0%, #1e40af 50%, #3b82f6 100%);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    margin-left: 200px;
    min-height: 100vh;
    font-family: "Trebuchet MS", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 52%, var(--bg-gradient-end) 100%);
    padding: 24px;
    transition: margin-left 0.3s ease;
}

body.nav-collapsed {
    margin-left: 0;
}

.nav-toggle {
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(45, 78, 118, 0.1);
    transition: all 0.3s ease;
}

.nav-toggle:hover {
    background: var(--secondary);
    box-shadow: 0 4px 12px rgba(45, 78, 118, 0.16);
}

.side-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 200px;
    height: 100vh;
    padding: 70px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-right: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
    background: color-mix(in srgb, var(--card) 95%, transparent);
    backdrop-filter: blur(8px);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.side-nav.collapsed {
    transform: translateX(-100%);
}

.nav-tab {
    flex: 0 0 auto;
    text-decoration: none;
    text-align: center;
    color: var(--secondary-text);
    font-weight: 600;
    font-size: 14px;
    padding: 12px 16px;
    border-radius: 9px;
    border: 1px solid color-mix(in srgb, var(--border) 68%, transparent);
    background: var(--secondary);
    transition: all 0.2s ease;
}

.nav-tab:hover {
    background: color-mix(in srgb, var(--primary) 10%, var(--secondary));
    border-color: var(--primary);
}

.nav-tab-active {
    color: #fff;
    border-color: var(--primary);
    background: linear-gradient(120deg, var(--primary) 0%, #5cb9d4 58%, #8fd3e7 100%);
}

.card {
    max-width: 880px;
    margin: 24px auto;
    background: color-mix(in srgb, var(--card) 94%, white);
    border: 1px solid color-mix(in srgb, var(--border) 84%, transparent);
    border-radius: 16px;
    box-shadow: 0 14px 38px rgba(45, 78, 118, 0.16);
    padding: 26px;
}

h1 {
    margin: 0;
    font-size: 32px;
    text-align: center;
}

.subtitle {
    margin: 8px 0 18px;
    color: var(--muted);
    line-height: 1.5;
    text-align: center;
}

.detect-card {
    margin-bottom: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--secondary);
    padding: 14px;
}

.detect-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--muted);
    margin-bottom: 8px;
}

.detect-content {
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 13px;
    white-space: pre-wrap;
    color: var(--text);
}

.row {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.row > button {
    min-width: 180px;
}

.connect-row {
    margin-bottom: 10px;
}

.connect-row > button {
    width: 100%;
}

.control-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
    align-items: stretch;
}

.control-grid:has(#tpwr-wrap:not(.is-hidden)) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.control-grid > button {
    width: 100%;
}

.verify-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
    align-items: stretch;
}

.verify-grid:has(#tpwr-wrap:not(.is-hidden)) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

button {
    border: 0;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    color: #fff;
    background: var(--button-gradient);
    transition: background 0.2s ease;
}

button:hover:not(:disabled) {
    background: var(--button-gradient-hover);
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

button.secondary {
    background: var(--secondary);
    color: var(--secondary-text);
    border: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.field-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: 1fr;
    margin-bottom: 12px;
}

.options-row {
    margin-bottom: 14px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--secondary);
}

.checkbox-inline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 600;
    flex-wrap: nowrap;
    white-space: nowrap;
}

.checkbox-card {
    width: 100%;
    height: 100%;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--secondary);
    padding: 10px 12px;
    margin: 0;
    line-height: 1.25;
    font-size: 13px;
}

label.checkbox-inline {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

.checkbox-inline input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-weight: 600;
    color: var(--muted);
}

input {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    background: var(--card);
    font-size: 14px;
    color: var(--text);
    transition: all 0.2s ease;
}

input[type="file"] {
    width: 100%;
}

input:focus {
    outline: 2px solid color-mix(in srgb, var(--primary) 35%, transparent);
    outline-offset: 1px;
}

textarea {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    background: var(--card);
    font-size: 14px;
    color: var(--text);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    line-height: 1.5;
    resize: vertical;
    min-height: 50px;
    transition: all 0.2s ease;
    width: 100%;
}

textarea:focus {
    outline: 2px solid color-mix(in srgb, var(--primary) 35%, transparent);
    outline-offset: 1px;
}

.action-commands {
    margin-bottom: 14px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
}

.action-commands summary {
    outline: none;
    transition: color 0.2s ease;
}

.action-commands summary:hover {
    color: var(--primary);
}

.action-commands[open] summary {
    margin-bottom: 10px;
}

.status-box {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card);
    padding: 10px 12px;
    margin-bottom: 12px;
    white-space: pre-wrap;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 13px;
}

.progress-wrap {
    margin-bottom: 12px;
    background: var(--progress-bg);
    border: 1px solid var(--progress-border);
    border-radius: 999px;
    overflow: hidden;
    height: 30px;
}

#progress-bar {
    height: 100%;
    width: 0%;
    background: var(--progress-fill);
    color: #fff;
    font-size: 12px;
    line-height: 30px;
    text-align: center;
    transition: width 0.15s ease;
}

.log {
    min-height: 180px;
    max-height: 280px;
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--log-bg);
    padding: 12px;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 12px;
    line-height: 1.45;
    white-space: pre-wrap;
}

.is-hidden {
    display: none !important;
}

#theme-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card);
    border-radius: 24px;
    padding: 8px;
    box-shadow: 0 2px 8px var(--shadow);
    display: flex;
    gap: 8px;
    z-index: 1000;
    transition: background 0.3s ease, box-shadow 0.3s ease, opacity 0.2s ease;
}

#theme-switcher.scrolling {
    opacity: 0.6;
}

.theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.theme-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 8px var(--shadow-hover);
}

.theme-btn.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 25%, transparent);
}

.theme-btn[data-theme="light"] {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
}

.theme-btn[data-theme="dark"] {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 700px) {
    body {
        padding: 14px;
        margin-left: 0;
    }

    .field-grid {
        grid-template-columns: 1fr;
    }

    .row {
        flex-direction: column;
    }

    .nav-toggle {
        display: block;
    }

    .side-nav {
        width: 100%;
        max-width: 250px;
        transform: translateX(-100%);
    }

    .side-nav:not(.collapsed) {
        transform: translateX(0);
    }

    .control-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .verify-grid {
        grid-template-columns: 1fr;
    }

    .nav-tab {
        font-size: 12px;
        padding: 8px 6px;
    }

    #theme-switcher {
        top: 10px;
        right: 10px;
        padding: 4px 6px;
        gap: 4px;
        border-radius: 16px;
        background: color-mix(in srgb, var(--card) 68%, transparent);
        border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        box-shadow: 0 1px 6px var(--shadow);
    }

    .theme-btn {
        width: 30px;
        height: 30px;
        font-size: 13px;
        line-height: 1;
    }

    .theme-btn:hover {
        transform: none;
    }
}