/* Tutorial 遮罩層 */
.tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.tutorial-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Sidebar Mode：只遮蓋主內容區，sidebar 保持可見 */
.tutorial-overlay.sidebar-mode {
    background: var(--bg-overlay);
}

/* 聚光燈高亮區域 */
.tutorial-spotlight {
    position: fixed;
    background: transparent;
    border-radius: var(--card-radius);
    /* stylelint-disable-next-line declaration-property-value-disallowed-list -- spotlight inner glow + 9999px overlay punch-out (no token covers this composition), 2026-05-03 */
    box-shadow: 0 0 0 9999px var(--bg-overlay),
        0 0 20px rgba(255, 255, 255, 0.1);
    pointer-events: none;
    z-index: 10000;
    transition: all var(--duration-normal) var(--ease-out);
}

[data-theme="dim"] .tutorial-spotlight {
    /* stylelint-disable-next-line declaration-property-value-disallowed-list -- dark-mode tutorial spotlight: punch-out + glow-rgb token + inner highlight, 2026-05-03 */
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.75),
        0 0 0 4px rgba(var(--ds-glow-rgb), 0.9),
        0 0 20px rgba(var(--ds-glow-rgb), 0.6),
        inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

/* 提示卡片 */
.tutorial-card {
    position: fixed;
    width: 360px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-lg);
    /* stylelint-disable-next-line declaration-property-value-disallowed-list -- Fluent Heavy acrylic 20px tutorial card, 2026-05-03 */
    backdrop-filter: blur(20px);
    /* stylelint-disable-next-line declaration-property-value-disallowed-list -- Safari prefix mirror, 2026-05-03 */
    -webkit-backdrop-filter: blur(20px);
    z-index: 10001;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--duration-normal) var(--ease-out);
}

.tutorial-overlay.active .tutorial-card {
    opacity: 1;
    transform: translateY(0);
}

.tutorial-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
}

.tutorial-card-header h5 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast);
}

.tutorial-close:hover {
    color: var(--text-primary);
    background: var(--border-light);
}

.tutorial-card-body {
    padding: 16px 20px;
}

.tutorial-card-body p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.tutorial-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-top: 1px solid var(--border-light);
}

.tutorial-progress {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.tutorial-actions {
    display: flex;
    gap: 8px;
}

.tutorial-actions .btn {
    padding: 6px 16px;
    font-size: 13px;
    border-radius: var(--radius-sm);
}

/* 大視窗模式（第 5 步） */
.tutorial-card.large {
    width: 420px;
}

.tutorial-card.large .tutorial-card-body {
    padding: 24px 28px;
}

.tutorial-card.large .tutorial-card-body p {
    font-size: 15px;
    line-height: 1.8;
}

.tutorial-card.large code {
    background: var(--border-light);
    padding: 2px 8px;
    /* stylelint-disable-next-line declaration-property-value-disallowed-list -- inline <code> tag pill, intentional small radius (Fluent token would be too large for inline text), 2026-05-03 */
    border-radius: 4px;
    font-size: 13px;
}

/* 響應式 */
@media (max-width: 768px) {
    .tutorial-card {
        width: calc(100vw - 40px);
        left: 20px !important;
        right: 20px !important;
    }
}