.platform-tutorial {
    position: fixed;
    inset: 0;
    z-index: 100500;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.18s ease, visibility 0.18s ease;
}

.platform-tutorial.is-active {
    opacity: 1;
    visibility: visible;
}

.platform-tutorial-scrim {
    display: none;
}

.platform-tutorial-target-box {
    position: fixed;
    box-sizing: border-box;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
    border: 2px solid #1890ff;
    border-radius: 10px;
    box-shadow: 0 0 0 4px rgba(24, 144, 255, 0.14), 0 0 22px rgba(24, 144, 255, 0.16);
    pointer-events: none;
    opacity: 0;
    transform: translateZ(0);
    transition: left 0.18s ease, top 0.18s ease, width 0.18s ease, height 0.18s ease, opacity 0.18s ease;
}

.platform-tutorial-target-box.is-visible {
    opacity: 1;
}

.platform-tutorial-arrow-layer {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    overflow: visible;
    pointer-events: none;
}

.platform-tutorial-arrow-path {
    fill: none;
    stroke: #1890ff;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 2px 4px rgba(24, 144, 255, 0.2));
}

.platform-tutorial-popover {
    position: fixed;
    width: min(320px, calc(100vw - 32px));
    padding: 16px;
    border: 1px solid rgba(24, 144, 255, 0.22);
    border-radius: 8px;
    background: #ffffff;
    color: #1f2937;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.18);
    pointer-events: auto;
    z-index: 2;
}

.platform-tutorial-step-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 22px;
    padding: 0 8px;
    margin-bottom: 10px;
    border-radius: 999px;
    background: #e6f4ff;
    color: #1677ff;
    font-size: 12px;
    font-weight: 700;
}

.platform-tutorial-title {
    margin: 0;
    color: #111827;
    font-size: 16px;
    line-height: 1.35;
    font-weight: 700;
}

.platform-tutorial-body {
    margin: 8px 0 0;
    color: #4b5563;
    font-size: 14px;
    line-height: 1.55;
}

.platform-tutorial-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

.platform-tutorial-btn {
    min-height: 36px;
    padding: 0 13px;
    border: 1px solid #d0d5dd;
    border-radius: 6px;
    background: #fff;
    color: #344054;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

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

.platform-tutorial-next {
    border-color: #1890ff;
    background: #1890ff;
    color: #fff;
}

.platform-tutorial-skip {
    margin-right: auto;
    border-color: transparent;
    background: transparent;
    color: #667085;
}

body.tutorial-mode .tutorial-locked-control {
    cursor: not-allowed;
}

body.tutorial-mode input[readonly],
body.tutorial-mode textarea[readonly] {
    cursor: not-allowed;
}

@media (max-width: 640px) {
    .platform-tutorial-popover {
        left: 16px !important;
        right: 16px;
        width: auto;
    }

    .platform-tutorial-actions {
        flex-wrap: wrap;
    }
}

@media (prefers-reduced-motion: reduce) {
    .platform-tutorial,
    .platform-tutorial-target-box {
        transition: none;
    }
}