:root {
    --hvx-blue: #024C71;
    --hvx-blue-light: #EAF2F6;
    --hvx-text: #1F2F46;
    --hvx-muted: #68737D;
    --hvx-line: #D9E1E6;
    --hvx-bg: #F7F8F8;
    --hvx-white: #FFFFFF;
}

.hvx-visualizer {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.72fr);
    gap: 24px;
    align-items: start;
    margin: 36px 0 48px;
}

.hvx-stage,
.hvx-panel {
    background: var(--hvx-white);
    border: 1px solid var(--hvx-line);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 14px 40px rgba(2, 76, 113, 0.10);
}

.hvx-head {
    padding: 24px 24px 16px;
}

.hvx-head h2 {
    margin: 0 0 12px;
    font-size: clamp(28px, 4vw, 46px);
    line-height: 1.08;
    color: var(--hvx-text);
}

.hvx-head p {
    margin: 0;
    color: var(--hvx-muted);
    font-size: 16px;
    line-height: 1.55;
}

.hvx-badge {
    display: inline-flex;
    margin-bottom: 12px;
    padding: 7px 11px;
    border-radius: 999px;
    background: var(--hvx-blue-light);
    color: var(--hvx-blue);
    font-size: 12px;
    font-weight: 700;
}

.hvx-canvas-wrap {
    position: relative;
    min-height: 430px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #EEF2F4;
}

#hvxCanvas {
    width: 100%;
    height: auto;
    display: block;
    touch-action: none;
}

.hvx-empty {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
}

.hvx-empty-card {
    max-width: 460px;
    padding: 24px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
}

.hvx-empty-card strong {
    display: block;
    margin-bottom: 8px;
    font-size: 20px;
    color: var(--hvx-text);
}

.hvx-empty-card p {
    margin: 0 0 18px;
    color: var(--hvx-muted);
    line-height: 1.5;
}

.hvx-btn {
    appearance: none;
    border: 0;
    border-radius: 12px;
    padding: 13px 16px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: 0.2s ease;
}

.hvx-btn:hover {
    transform: translateY(-1px);
}

.hvx-btn-primary {
    background: var(--hvx-blue);
    color: #fff;
}

.hvx-btn-soft {
    background: var(--hvx-blue-light);
    color: var(--hvx-blue);
}

.hvx-btn-ghost {
    background: #fff;
    color: var(--hvx-text);
    border: 1px solid var(--hvx-line);
}

.hvx-toolbar {
    padding: 14px 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    border-top: 1px solid var(--hvx-line);
    background: #fff;
}

.hvx-toolbar .hvx-btn {
    padding: 10px 13px;
    font-size: 13px;
}

.hvx-file-input {
    display: none;
}

.hvx-point-help {
    position: absolute;
    left: 14px;
    bottom: 14px;
    max-width: 320px;
    display: none;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(31, 47, 70, 0.88);
    color: #fff;
    font-size: 12px;
    line-height: 1.4;
}

.hvx-panel {
    padding: 20px;
    position: sticky;
    top: 18px;
}

.hvx-step {
    padding-bottom: 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--hvx-line);
}

.hvx-step:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
}

.hvx-step-title {
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 800;
    color: var(--hvx-text);
}

.hvx-segment {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.hvx-segment button,
.hvx-dir button {
    padding: 10px 8px;
    border: 1px solid var(--hvx-line);
    border-radius: 11px;
    background: #fff;
    color: var(--hvx-text);
    font-weight: 700;
    cursor: pointer;
}

.hvx-segment button.active,
.hvx-dir button.active {
    border-color: var(--hvx-blue);
    background: var(--hvx-blue-light);
    color: var(--hvx-blue);
}

.hvx-colors {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 9px;
}

.hvx-swatch {
    padding: 5px;
    border: 2px solid transparent;
    border-radius: 12px;
    background: #fff;
    cursor: pointer;
}

.hvx-swatch.active {
    border-color: var(--hvx-blue);
}

.hvx-swatch i {
    display: block;
    aspect-ratio: 1;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.hvx-swatch span {
    display: block;
    margin-top: 5px;
    font-size: 11px;
    text-align: center;
    white-space: nowrap;
    color: var(--hvx-text);
}

.hvx-dir {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.hvx-actions {
    display: grid;
    gap: 9px;
}

.hvx-actions .hvx-btn {
    width: 100%;
}

.hvx-form {
    display: none;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--hvx-line);
    gap: 9px;
}

.hvx-form.show {
    display: grid;
}

.hvx-input {
    width: 100%;
    padding: 12px 13px;
    border: 1px solid var(--hvx-line);
    border-radius: 11px;
    font-size: 15px;
    outline: none;
}

.hvx-input:focus {
    border-color: var(--hvx-blue);
    box-shadow: 0 0 0 3px rgba(2, 76, 113, 0.08);
}

@media (max-width: 900px) {
    .hvx-visualizer {
        grid-template-columns: 1fr;
        gap: 18px;
        margin: 28px 0 36px;
    }

    .hvx-panel {
        position: static;
    }

    .hvx-canvas-wrap {
        min-height: 340px;
    }
}

@media (max-width: 560px) {
    .hvx-head {
        padding: 20px 16px 14px;
    }

    .hvx-panel {
        padding: 16px;
    }

    .hvx-segment {
        grid-template-columns: 1fr;
    }

    .hvx-colors {
        grid-template-columns: repeat(2, 1fr);
    }

    .hvx-toolbar {
        flex-direction: column;
    }

    .hvx-toolbar .hvx-btn {
        width: 100%;
    }
}