/* QR Code Generator
-------------------------------------- */

.qrgen-page {
    --qrgen-accent: #0b7a70;
    --qrgen-accent-dark: #085c54;
    --qrgen-accent-text: #075249;
    --qrgen-accent-light: color-mix(in srgb, #0b7a70 12%, transparent);
    --qrgen-border: var(--flex-gray-15, rgba(0, 0, 0, 0.08));
    --qrgen-surface: var(--solid-white, #fff);
    --qrgen-panel: #f3f4f6;
    --qrgen-input-border: #e5e7eb;
    --qrgen-radius: var(--round-7, 7px);
    --qrgen-card-radius: 16px;
    --qrgen-transition: var(--effect, 0.25s ease);
    position: relative;
    padding: 36px 0 80px;
}

/* Hero (no card wrapper)
-------------------------------------- */

.qrgen-hero {
    max-width: 800px;
    margin: 0 auto;
    padding: 18px 0 28px;
    text-align: center;
}

.qrgen-title {
    margin-bottom: 12px;
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.qrgen-subtitle {
    max-width: 640px;
    margin: 0 auto 18px;
    font-size: clamp(0.9rem, 1.5vw, 1rem);
    line-height: 1.65;
    color: var(--excerpt-color);
}

/* Single tool card
-------------------------------------- */

.qrgen-tool-section { max-width: 980px; margin: 0 auto; }

.qrgen-tool-card {
    background: var(--qrgen-surface);
    border: 1px solid #ddd;
    border-radius: var(--qrgen-card-radius);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.05);
    padding: 24px;
}

.qrgen-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

/* Controls (left) — soft-gray inner panel
-------------------------------------- */

.qrgen-controls {
    background: var(--qrgen-panel);
    border-radius: 12px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.qrgen-field { display: flex; flex-direction: column; gap: 6px; }
.qrgen-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.qrgen-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
}

.qrgen-input,
.qrgen-select {
    background: #fff;
    border: 1px solid var(--qrgen-input-border);
    border-radius: var(--qrgen-radius);
    padding: 10px 12px;
    font-size: 0.95rem;
    color: #111;
    transition: border-color var(--qrgen-transition);
    width: 100%;
    font-family: inherit;
}

.qrgen-input { resize: vertical; min-height: 90px; }

.qrgen-input:focus,
.qrgen-select:focus {
    outline: none;
    border-color: var(--qrgen-accent);
    box-shadow: 0 0 0 3px var(--qrgen-accent-light);
}

.qrgen-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.qrgen-label-hint {
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--qrgen-accent-text);
    background: var(--qrgen-accent-light);
    padding: 2px 8px;
    border-radius: 999px;
}

.qrgen-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
    outline: none;
}
.qrgen-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--qrgen-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.qrgen-slider::-moz-range-thumb {
    width: 18px; height: 18px;
    background: var(--qrgen-accent);
    border-radius: 50%; cursor: pointer; border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.qrgen-slider:focus-visible {
    outline: 2px solid var(--qrgen-accent);
    outline-offset: 4px;
}

.qrgen-field-color { align-items: stretch; }
.qrgen-color-swatch {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: #fff;
    border: 1px solid var(--qrgen-input-border);
    border-radius: var(--qrgen-radius);
    cursor: pointer;
    transition: border-color var(--qrgen-transition), box-shadow var(--qrgen-transition);
}
.qrgen-color-swatch:hover { border-color: var(--qrgen-accent); }
.qrgen-color-swatch:focus-within {
    border-color: var(--qrgen-accent);
    box-shadow: 0 0 0 3px var(--qrgen-accent-light);
}
.qrgen-color-chip {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    flex-shrink: 0;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}
.qrgen-color-hex {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.85rem;
    color: #374151;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}
.qrgen-color-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    border: 0;
    padding: 0;
}

.qrgen-actions {
    display: flex;
    gap: 10px;
    margin-top: 6px;
    flex-wrap: wrap;
}

.qrgen-btn {
    flex: 1;
    min-width: 140px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: var(--qrgen-radius);
    border: 1px solid var(--qrgen-input-border);
    background: #fff;
    color: #111;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--qrgen-transition);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.qrgen-btn svg { display: block; }
.qrgen-btn:hover {
    border-color: var(--qrgen-accent);
    color: var(--qrgen-accent-text);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
}
.qrgen-btn-primary {
    background: var(--qrgen-accent);
    border-color: var(--qrgen-accent);
    color: #fff;
    box-shadow: 0 2px 6px color-mix(in srgb, var(--qrgen-accent) 35%, transparent);
}
.qrgen-btn-primary:hover {
    background: var(--qrgen-accent-dark);
    border-color: var(--qrgen-accent-dark);
    color: #fff;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--qrgen-accent) 45%, transparent);
}
.qrgen-btn:active { transform: translateY(0); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06); }
.qrgen-btn:focus-visible,
.qrgen-btn-primary:focus-visible {
    outline: 2px solid var(--qrgen-accent);
    outline-offset: 2px;
}

/* Preview (right)
-------------------------------------- */

.qrgen-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.qrgen-preview-frame {
    background: #fff;
    border: 1px solid var(--qrgen-input-border);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.qrgen-preview-empty {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.92);
    padding: 8px 14px;
    border-radius: var(--qrgen-radius);
    font-size: 0.85rem;
    color: #374151;
    pointer-events: none;
    white-space: nowrap;
}

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

.qrgen-preview-caption {
    font-size: 0.82rem;
    color: #6b7280;
    margin: 0;
}

/* Content sections below the tool card — FLAT, separator-based
-------------------------------------- */

.qrgen-seo-content {
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid var(--qrgen-border);
}

.qrgen-seo-content-inner { padding: 0; }
.qrgen-seo-content-inner h2 {
    font-size: clamp(1.2rem, 2.5vw, 1.55rem);
    margin: 28px 0 12px;
    letter-spacing: -0.01em;
}
.qrgen-seo-content-inner h2:first-child { margin-top: 0; }
.qrgen-seo-content-inner h3 {
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    margin: 22px 0 10px;
}
.qrgen-seo-content-inner p,
.qrgen-seo-content-inner li {
    font-size: 0.98rem;
    line-height: 1.7;
    color: var(--meta-color, #444);
}
.qrgen-seo-content-inner ul,
.qrgen-seo-content-inner ol { padding-left: 22px; margin: 0 0 16px; }
.qrgen-seo-content-inner li { margin-bottom: 8px; }
.qrgen-seo-content-inner code {
    background: var(--qrgen-panel);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}
.qrgen-seo-content-inner a {
    color: var(--qrgen-accent);
    text-decoration: underline;
}
.qrgen-seo-content-inner a:hover { color: var(--qrgen-accent-dark); }

/* FAQ
-------------------------------------- */

.qrgen-faq {
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid var(--qrgen-border);
}

.qrgen-faq-inner {
    padding: 0;
}

.qrgen-faq-title {
    font-size: clamp(1.3rem, 2.8vw, 1.7rem);
    margin: 0 0 18px;
}

.qrgen-faq-item {
    border-bottom: 1px solid var(--qrgen-border);
    padding: 14px 0;
}
.qrgen-faq-item summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    list-style: none;
    position: relative;
    padding-right: 28px;
}
.qrgen-faq-item summary::-webkit-details-marker { display: none; }
.qrgen-faq-item summary::after {
    content: "+";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4rem;
    color: var(--qrgen-accent);
    line-height: 1;
}
.qrgen-faq-item[open] summary::after { content: "−"; }

.qrgen-faq-answer { padding-top: 10px; }
.qrgen-faq-answer p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--meta-color, #444);
}

.qrgen-updated {
    margin-top: 24px;
    font-size: 0.82rem;
    color: #6b7280;
}

/* Mobile
-------------------------------------- */

@media (max-width: 768px) {
    .qrgen-grid { grid-template-columns: 1fr; }
    .qrgen-tool-card { padding: 18px; }
    .qrgen-preview { order: -1; }
    /* Theme-wide rule: do NOT override .qrgen-faq-inner padding here. */
}