.sqrm-generator,
.sqrm-generator * {
    box-sizing: border-box;
}

.sqrm-generator {
    --sqrm-border: #d9dde5;
    --sqrm-muted: #667085;
    --sqrm-surface: #ffffff;
    --sqrm-soft: #f6f7f9;
    --sqrm-text: #172033;
    --sqrm-accent: #1e6fe8;
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: clamp(20px, 3vw, 38px);
    border: 1px solid var(--sqrm-border);
    border-radius: 18px;
    background: var(--sqrm-surface);
    color: var(--sqrm-text);
    box-shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
}

.sqrm-generator__header {
    margin-bottom: 28px;
}

.sqrm-generator__title {
    margin: 0 0 8px;
    color: inherit;
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.15;
}

.sqrm-generator__intro,
.sqrm-generator__tip {
    margin: 0;
    color: var(--sqrm-muted);
    line-height: 1.6;
}

.sqrm-generator__layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
    gap: clamp(24px, 4vw, 48px);
    align-items: start;
}

.sqrm-generator__form {
    min-width: 0;
}

.sqrm-generator__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.sqrm-field {
    margin-bottom: 18px;
}

.sqrm-field label {
    display: block;
    margin-bottom: 8px;
    color: inherit;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.35;
}

.sqrm-field input[type="text"],
.sqrm-field input[type="url"],
.sqrm-field select {
    display: block;
    width: 100%;
    min-height: 48px;
    margin: 0;
    padding: 10px 13px;
    border: 1px solid var(--sqrm-border);
    border-radius: 8px;
    background: #fff;
    color: #172033;
    font: inherit;
    line-height: 1.35;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.sqrm-field input:focus,
.sqrm-field select:focus {
    outline: none;
    border-color: var(--sqrm-accent);
    box-shadow: 0 0 0 3px rgba(30, 111, 232, 0.16);
}

.sqrm-color-control {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 5px 10px 5px 6px;
    border: 1px solid var(--sqrm-border);
    border-radius: 8px;
    background: #fff;
}

.sqrm-color-control input[type="color"] {
    width: 46px;
    height: 36px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.sqrm-color-control output {
    margin-left: 10px;
    color: #344054;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 14px;
}

.sqrm-generator__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 11px;
    margin-top: 8px;
}

.sqrm-button {
    min-height: 46px;
    margin: 0;
    padding: 10px 18px;
    border: 1px solid #c9cfda;
    border-radius: 8px;
    background: #fff;
    color: #172033;
    font: inherit;
    font-weight: 700;
    line-height: 1.2;
    cursor: pointer;
    transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, opacity 150ms ease;
}

.sqrm-button:hover:not(:disabled) {
    border-color: #99a3b3;
    transform: translateY(-1px);
}

.sqrm-button--primary {
    border-color: var(--sqrm-accent);
    background: var(--sqrm-accent);
    color: #fff;
}

.sqrm-button:disabled {
    cursor: not-allowed;
    opacity: 0.48;
}

.sqrm-generator__message {
    min-height: 24px;
    margin: 4px 0 8px;
    color: var(--sqrm-muted);
    font-size: 14px;
    font-weight: 600;
}

.sqrm-generator__message.is-error {
    color: #b42318;
}

.sqrm-generator__message.is-success {
    color: #067647;
}

.sqrm-generator__preview-panel {
    position: sticky;
    top: 24px;
    min-width: 0;
    padding: 20px;
    border-radius: 14px;
    background: var(--sqrm-soft);
}

.sqrm-generator__preview-panel h3 {
    margin: 0 0 14px;
    color: inherit;
    font-size: 20px;
}

.sqrm-preview {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 350px;
    overflow: hidden;
    padding: 18px;
    border: 1px dashed #c8ced8;
    border-radius: 10px;
    background: #fff;
}

.sqrm-preview-canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
}

.sqrm-preview-canvas[hidden] {
    display: none;
}

.sqrm-preview-placeholder {
    margin: 0;
    color: var(--sqrm-muted);
    text-align: center;
}

.sqrm-generator__tip {
    margin-top: 12px;
    font-size: 13px;
}

.sqrm-hidden-qr {
    position: fixed;
    left: -100000px;
    top: -100000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    pointer-events: none;
}

@media (max-width: 820px) {
    .sqrm-generator__layout {
        grid-template-columns: 1fr;
    }

    .sqrm-generator__preview-panel {
        position: static;
    }
}

@media (max-width: 560px) {
    .sqrm-generator {
        padding: 18px;
        border-radius: 12px;
    }

    .sqrm-generator__grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .sqrm-generator__actions,
    .sqrm-button {
        width: 100%;
    }

    .sqrm-preview {
        min-height: 260px;
        padding: 12px;
    }
}