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

:root {
    --bg-primary: #1a1b1c;
    --bg-secondary: #1f2021;
    --border: #2f3031;
    --text-primary: #c0c1c2;
    --text-secondary: #7a7b7c;
    --text-muted: #565758;
    --code-bg: #292a2b;
    --code-text: #bbbcbd;
    --bubble-bg: #e64a199f;
    --bubble-text: #ffccbc;
    --line-num: #3b3c3d;
    --btn-bg: #2f3031;
    --btn-text: #c0c1c2;
    --btn-hover: #3b3c3d;
    --btn-primary-bg: #7a7b7c;
    --btn-primary-text: #1a1b1c;
    --btn-primary-hover: #898a8b;
    --progress-bg: #2f3031;
    --progress-fill: #7a7b7c;
    --cmd-bg: #1a1b1c;
    --cmd-border: #2f3031;
    --cmd-text: #9e9fa0;
    --topbar-bg: #1f2021;
    --hljs-bg: #1a1b1c;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f6f7;
    --border: #dcddde;
    --text-primary: #2c2d2e;
    --text-secondary: #5a5b5c;
    --text-muted: #8a8b8c;
    --code-bg: #e8e9ea;
    --code-text: #2c2d2e;
    --bubble-bg: #e64a19cf;
    --bubble-text: #ffffff;
    --line-num: #b0b1b2;
    --btn-bg: #dcddde;
    --btn-text: #2c2d2e;
    --btn-hover: #c8c9ca;
    --btn-primary-bg: #3a7bd5;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #2a6bc5;
    --progress-bg: #dcddde;
    --progress-fill: #3a7bd5;
    --cmd-bg: #f5f6f7;
    --cmd-border: #dcddde;
    --cmd-text: #5a5b5c;
    --topbar-bg: #f5f6f7;
    --hljs-bg: #f5f6f7;
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC",
        sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Top bar */
.topbar {
    padding: 12px 24px;
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.topbar__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
}

.topbar__step {
    font-size: 14px;
    color: var(--text-muted);
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 16px;
    padding: 4px 10px;
    border-radius: 6px;
    transition: all 0.15s;
    font-family: inherit;
    line-height: 1;
}

.theme-toggle:hover {
    background: var(--btn-hover);
}

/* Main panel */
.layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Left: code panel */
.code-panel {
    flex: 1;
    background: var(--bg-primary);
    overflow: hidden;
}

.code-panel pre {
    height: 100%;
    margin: 0;
    padding: 32px;
    overflow: auto;
    font-family: "JetBrains Mono", monospace;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-primary);
    tab-size: 4;
    white-space: pre-wrap;
    word-break: break-word;
}

.code-panel pre .hljs {
    background: transparent;
}

.code-panel pre code.hljs {
    font-family: inherit;
    background: transparent;
    padding: 0;
}

/* Bubble comment */
.code-panel pre .bubble {
    display: inline-block;
    position: relative;
    margin-left: 8px;
    padding: 0 12px;
    background: var(--bubble-bg);
    color: var(--bubble-text);
    border-radius: 10px;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC",
        sans-serif;
    font-size: 13px;
    font-style: normal;
    line-height: 24px;
    white-space: nowrap;
    cursor: default;
}

.code-panel pre .bubble::before {
    content: "";
    position: absolute;
    left: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-right: 6px solid var(--bubble-bg);
}

/* Line number */
.code-panel .line-num {
    display: inline-block;
    width: 32px;
    text-align: right;
    margin-right: 16px;
    color: var(--line-num);
    user-select: none;
}

/* Right: description panel */
.speech-panel {
    width: 380px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.layout--tb {
    flex-direction: column;
}

.layout--tb .speech-panel {
    width: 100%;
    border-left: none;
    border-bottom: 1px solid var(--border);
    max-height: none;
    flex: 0 0 auto;
}

.layout--tb .code-panel {
    flex: 1;
    min-height: 0;
}

.speech-content {
    flex: 1;
    padding: 32px 24px;
    overflow-y: auto;
}

.speech-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.speech-content p:last-child {
    margin-bottom: 0;
}

.speech-content code {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

.speech-content .cmd {
    display: block;
    background: var(--cmd-bg);
    border: 1px solid var(--cmd-border);
    border-radius: 6px;
    padding: 10px 14px;
    margin: 12px 0;
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    color: var(--cmd-text);
}

/* Control panel */
.controls {
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.controls button {
    background: var(--btn-bg);
    border: none;
    color: var(--btn-text);
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}

.controls button:hover {
    background: var(--btn-hover);
}

.controls button:active {
    transform: scale(0.97);
}

.controls__btn--primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    font-weight: 600;
}

.controls__btn--primary:hover {
    background: var(--btn-primary-hover);
}

.controls button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.controls__progress {
    flex: 1;
    height: 4px;
    background: var(--progress-bg);
    border-radius: 2px;
    overflow: visible;
    cursor: pointer;
    position: relative;
}

.controls__progress::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -10px;
    bottom: -10px;
}

.controls__progress-fill {
    height: 100%;
    background: var(--progress-fill);
    border-radius: 2px;
    transition: width 0.3s;
    overflow: hidden;
}

.controls__text {
    font-size: 13px;
    color: var(--text-muted);
    min-width: 60px;
    text-align: right;
}

@media (max-width: 800px) {
    .layout {
        flex-direction: column;
    }

    .speech-panel {
        width: 100%;
        border-left: none;
        border-top: 1px solid var(--border);
        max-height: 40vh;
    }
}