/* ==========================================================
 *  DRS QR Code Generator – Styles (v1.1.0)
 *  © Digital Rise Solutions
 * ========================================================== */

/* ── Reset & Wrapper ── */
.drs-qr-wrap {
    --drs-primary: #2563eb;
    --drs-primary-hover: #1d4ed8;
    --drs-danger: #ef4444;
    --drs-gray-50: #f9fafb;
    --drs-gray-100: #f3f4f6;
    --drs-gray-200: #e5e7eb;
    --drs-gray-400: #9ca3af;
    --drs-gray-600: #4b5563;
    --drs-gray-800: #1f2937;
    --drs-radius: 12px;
    --drs-shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 14px rgba(0,0,0,.04);

    max-width: 520px;
    margin: 2rem auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--drs-gray-800);
    line-height: 1.5;
    box-sizing: border-box;
}
.drs-qr-wrap *,
.drs-qr-wrap *::before,
.drs-qr-wrap *::after {
    box-sizing: inherit;
}

/* ── Card ── */
.drs-qr-card {
    background: #fff;
    border: 1px solid var(--drs-gray-200);
    border-radius: var(--drs-radius);
    padding: 2rem;
    margin-bottom: 1rem;
    box-shadow: var(--drs-shadow);
}

/* ── Typography ── */
.drs-qr-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 .25rem;
    letter-spacing: -.02em;
}
.drs-qr-subtitle {
    margin: 0 0 1.5rem;
    color: var(--drs-gray-400);
    font-size: .925rem;
}
.drs-qr-label {
    display: block;
    font-weight: 600;
    font-size: .85rem;
    margin-bottom: .4rem;
    color: var(--drs-gray-600);
}
.drs-required { color: var(--drs-danger); }
.drs-optional { color: var(--drs-gray-400); font-weight: 400; }

/* ── Inputs ── */
.drs-qr-input,
.drs-qr-select {
    display: block;
    width: 100%;
    padding: .65rem .85rem;
    font-size: .95rem;
    border: 1px solid var(--drs-gray-200);
    border-radius: 8px;
    background: var(--drs-gray-50);
    transition: border-color .2s, box-shadow .2s;
    outline: none;
    margin-bottom: 1rem;
    font-family: inherit;
    color: var(--drs-gray-800);
}
.drs-qr-input:focus,
.drs-qr-select:focus {
    border-color: var(--drs-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

/* FIX #17: Keyboard-only focus ring for accessibility. */
.drs-qr-input:focus-visible,
.drs-qr-select:focus-visible,
.drs-qr-btn-generate:focus-visible,
.drs-qr-btn-download:focus-visible,
.drs-qr-remove-btn:focus-visible,
.drs-qr-color:focus-visible {
    outline: 2px solid var(--drs-primary);
    outline-offset: 2px;
}

.drs-qr-color {
    width: 44px; height: 44px;
    border: 1px solid var(--drs-gray-200);
    border-radius: 8px;
    padding: 2px;
    cursor: pointer;
    background: var(--drs-gray-50);
}

/* ── Error ── */
.drs-qr-error {
    display: block;
    min-height: 1.1em;
    font-size: .8rem;
    color: var(--drs-danger);
    margin-top: -0.7rem;
    margin-bottom: .6rem;
}

/* ── File Upload Area ── */
.drs-qr-upload-area {
    position: relative;
    border: 2px dashed var(--drs-gray-200);
    border-radius: 10px;
    background: var(--drs-gray-50);
    text-align: center;
    padding: 1.5rem 1rem;
    margin-bottom: 1rem;
    transition: border-color .2s, background .2s;
    cursor: pointer;
}
.drs-qr-upload-area:hover,
.drs-qr-upload-area.drs-drag-over {
    border-color: var(--drs-primary);
    background: rgba(37,99,235,.04);
}

/* FIX #16: Replace `inset: 0` with explicit props for older browsers. */
.drs-qr-file-input {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}
.drs-qr-upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .35rem;
    color: var(--drs-gray-400);
    pointer-events: none;
}
.drs-qr-upload-placeholder svg { color: var(--drs-gray-400); }
.drs-qr-upload-placeholder small { font-size: .75rem; }

/* Preview thumbnail */
.drs-qr-upload-preview {
    position: relative;
    display: inline-block;
}
.drs-qr-upload-preview img {
    max-width: 80px;
    max-height: 80px;
    border-radius: 8px;
    object-fit: contain;
    border: 1px solid var(--drs-gray-200);
}
.drs-qr-remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: none;
    background: var(--drs-danger);
    color: #fff;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    cursor: pointer;
    padding: 0;
    z-index: 2;
}
.drs-qr-remove-btn:hover {
    background: #dc2626;
}

/* ── Options Row ── */
.drs-qr-options-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: .5rem;
}
.drs-qr-option {
    flex: 1 1 100px;
    min-width: 0;
}
.drs-qr-option .drs-qr-select {
    margin-bottom: 0;
}

/* ── Buttons ── */
.drs-qr-btn-generate,
.drs-qr-btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    width: 100%;
    padding: .75rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background .2s, transform .1s;
    font-family: inherit;
}
.drs-qr-btn-generate {
    background: var(--drs-primary);
    color: #fff;
    margin-top: .5rem;
}
.drs-qr-btn-generate:hover { background: var(--drs-primary-hover); }
.drs-qr-btn-generate:active { transform: scale(.98); }
.drs-qr-btn-generate:disabled {
    opacity: .55;
    cursor: not-allowed;
}

.drs-qr-btn-download {
    background: var(--drs-gray-800);
    color: #fff;
    margin-top: 1rem;
}
.drs-qr-btn-download:hover { background: #111827; }

/* ── Output Preview ── */
.drs-qr-output-card {
    text-align: center;
}
.drs-qr-preview-wrap {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
}
.drs-qr-result-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--drs-gray-200);
    image-rendering: crisp-edges;                     /* Firefox */
    image-rendering: -webkit-optimize-contrast;       /* WebKit  */
}

/* ── Footer ── */
.drs-qr-footer {
    text-align: center;
    font-size: .78rem;
    color: var(--drs-gray-400);
    margin-top: .5rem;
}
.drs-qr-footer strong {
    color: var(--drs-gray-600);
}

/* ── Responsive ── */
@media (max-width: 560px) {
    .drs-qr-wrap { margin: 1rem .75rem; }
    .drs-qr-card { padding: 1.25rem; }
    .drs-qr-options-row { gap: .65rem; }
}

/* ── FIX #13: Print styles ── */
@media print {
    .drs-qr-wrap { max-width: 100%; margin: 0; }
    .drs-qr-card { box-shadow: none; border: none; padding: 0; }
    .drs-qr-form,
    .drs-qr-btn-download,
    .drs-qr-footer { display: none !important; }
    .drs-qr-output-card { display: block !important; border: none; box-shadow: none; }
    .drs-qr-result-img { max-width: 300px; border: none; }
}