/* QR Code Generator & Scanner Styles */
.hidden { display: none !important; }

/* Tabs */
.tab-nav { display: flex; gap: 4px; background: var(--bg-color); padding: 4px; border-radius: var(--radius-md); margin-bottom: 28px; border: 1px solid var(--border-color); }
.tab-btn { flex: 1; padding: 12px 20px; border: none; background: transparent; color: var(--text-muted); font-weight: 600; font-size: 0.95rem; border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; transition: var(--transition); font-family: var(--font-family); }
.tab-btn:hover { color: var(--text-main); background: rgba(37, 99, 235, 0.05); }
.tab-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.tab-btn.active { background: var(--accent); color: white; box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3); }
.tab-btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Generator Layout */
.generator-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.form-section { margin-bottom: 20px; }
.form-section-title { font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 12px; display: flex; align-items: center; gap: 6px; }
.form-section-title svg { width: 14px; height: 14px; color: var(--accent); }

/* QR Type Selector */
.qr-type-selector { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; margin-bottom: 16px; }
.qr-type-btn { padding: 8px 10px; border: 1px solid var(--border-color); background: var(--bg-color); color: var(--text-muted); border-radius: 6px; font-size: 0.8rem; font-weight: 500; cursor: pointer; transition: var(--transition); display: flex; align-items: center; gap: 6px; font-family: var(--font-family); }
.qr-type-btn:hover { border-color: var(--accent); color: var(--accent); }
.qr-type-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.qr-type-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.qr-type-btn svg { width: 14px; height: 14px; flex-shrink: 0; }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; color: var(--text-main); }
.form-control { width: 100%; padding: 10px 14px; background: var(--bg-color); color: var(--text-main); border: 1px solid var(--border-color); border-radius: var(--radius-md); font-size: 0.95rem; font-family: var(--font-family); transition: var(--transition); }
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12); }
.form-control::placeholder { color: var(--text-muted); opacity: 0.7; }
textarea.form-control { resize: vertical; min-height: 80px; line-height: 1.5; }
select.form-control { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

/* Color Inputs */
.color-row { display: flex; gap: 16px; }
.color-field { flex: 1; }
.color-field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; color: var(--text-main); }
.color-input-wrapper { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border: 1px solid var(--border-color); border-radius: var(--radius-md); background: var(--bg-color); }
.color-input-wrapper input[type="color"] { width: 32px; height: 32px; border: none; border-radius: 6px; cursor: pointer; padding: 0; background: none; }
.color-input-wrapper input[type="text"] { flex: 1; border: none; background: transparent; color: var(--text-main); font-family: 'SFMono-Regular', Consolas, monospace; font-size: 0.85rem; width: 70px; }

/* Size Slider */
.slider-row { display: flex; align-items: center; gap: 12px; }
.slider-row input[type="range"] { flex: 1; height: 6px; border-radius: 3px; background: var(--border-color); outline: none; -webkit-appearance: none; appearance: none; }
.slider-row input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--accent); cursor: pointer; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2); }
.slider-row input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--accent); cursor: pointer; border: none; }
.slider-value { font-size: 0.85rem; font-weight: 600; color: var(--text-main); min-width: 40px; text-align: center; }

/* QR Preview */
.qr-preview-panel { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.qr-display { width: 100%; aspect-ratio: 1; max-width: 400px; background: var(--bg-color); border: 2px dashed var(--border-color); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 12px; transition: var(--transition); overflow: hidden; position: relative; }
.qr-display.has-qr { border-style: solid; border-color: var(--border-color); background: white; }
.qr-display .qr-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 12px; }
.qr-display svg.qr-placeholder-icon { width: 64px; height: 64px; color: var(--text-muted); opacity: 0.4; }
.qr-display .placeholder-text { color: var(--text-muted); font-size: 0.9rem; text-align: center; }
.qr-display canvas { width: 100%; height: 100%; object-fit: contain; image-rendering: pixelated; display: none; }
.qr-display.has-qr canvas { display: block; }

/* QR Verified Badge */
.qr-verified { display: none; align-items: center; justify-content: center; gap: 6px; padding: 6px 14px; background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.3); border-radius: 20px; color: #10b981; font-size: 0.8rem; font-weight: 600; margin-top: 8px; white-space: nowrap; }
.qr-verified.show { display: inline-flex; }
.qr-verified svg { width: 16px; height: 16px; flex-shrink: 0; }
.qr-verified.fail { background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.3); color: #ef4444; }
[data-theme="dark"] .qr-verified { background: rgba(16, 185, 129, 0.15); border-color: rgba(16, 185, 129, 0.4); }
[data-theme="dark"] .qr-verified.fail { background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.4); }
[data-theme="dark"] .qr-display canvas { background: #ffffff; }

/* QR Actions */
.qr-actions { display: flex; gap: 10px; width: 100%; max-width: 400px; flex-wrap: wrap; }
.qr-actions .btn { flex: 1; min-width: 80px; }

/* Generate Row */
.generate-row { display: flex; gap: 12px; margin-top: 8px; }
.generate-row .btn { flex: 1; min-height: 44px; }

/* Scanner Layout */
.scanner-layout { display: flex; flex-direction: column; gap: 24px; }
.scanner-methods { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.scanner-method-card { padding: 24px; border: 2px dashed var(--border-color); border-radius: var(--radius); text-align: center; cursor: pointer; transition: var(--transition); background: var(--bg-color); }
.scanner-method-card:hover, .scanner-method-card:focus-visible { border-color: var(--accent); background: var(--accent-light); }
.scanner-method-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.scanner-method-card.active { border-style: solid; border-color: var(--accent); background: var(--accent-light); }
.scanner-method-card svg { width: 40px; height: 40px; color: var(--accent); margin-bottom: 12px; }
.scanner-method-card h3 { font-size: 1rem; margin-bottom: 6px; color: var(--text-main); }
.scanner-method-card p { font-size: 0.85rem; color: var(--text-muted); }

/* Scanner Upload Area */
.scanner-upload-area { border: 2px dashed var(--border-color); border-radius: var(--radius); padding: 40px 20px; text-align: center; cursor: pointer; transition: var(--transition); background: var(--bg-color); }
.scanner-upload-area:hover, .scanner-upload-area.dragover { border-color: var(--accent); background: var(--accent-light); }
.scanner-upload-area svg { width: 48px; height: 48px; color: var(--accent); margin-bottom: 12px; }
.scanner-upload-area h3 { margin-bottom: 8px; color: var(--text-main); }
.scanner-upload-area p { color: var(--text-muted); font-size: 0.9rem; }

/* Camera */
.camera-container { position: relative; width: 100%; max-width: 500px; margin: 0 auto; border-radius: var(--radius); overflow: hidden; background: #000; aspect-ratio: 4/3; }
.camera-container video { width: 100%; height: 100%; object-fit: cover; }
.camera-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; pointer-events: none; }
.scan-frame { width: 200px; height: 200px; border: 3px solid rgba(255, 255, 255, 0.8); border-radius: 12px; box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.4); position: relative; }
.scan-line { position: absolute; left: 0; right: 0; height: 2px; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: scanLine 2s ease-in-out infinite; }
@keyframes scanLine { 0%, 100% { top: 0; } 50% { top: 100%; } }
.camera-controls { display: flex; gap: 12px; justify-content: center; margin-top: 16px; }

/* Scanner Result */
.scanner-result { padding: 20px; background: var(--bg-color); border: 1px solid var(--border-color); border-radius: var(--radius); display: none; }
.scanner-result.show { display: block; animation: fadeIn 0.3s ease; }
.scanner-result.success { border-color: rgba(16, 185, 129, 0.3); background: rgba(16, 185, 129, 0.05); }
.scanner-result-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-weight: 700; font-size: 1rem; color: var(--text-main); }
.scanner-result-header svg { width: 20px; height: 20px; }
.scanner-result.success .scanner-result-header { color: #10b981; }
.scanner-result-content { padding: 12px 16px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 6px; font-family: 'SFMono-Regular', Consolas, monospace; font-size: 0.9rem; word-break: break-all; margin-bottom: 12px; color: var(--text-main); max-height: 200px; overflow-y: auto; }
.scanner-result-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.scanner-result-actions .btn { font-size: 0.85rem; padding: 8px 14px; }

/* Privacy Notice */
.privacy-notice { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 16px; background: rgba(16, 185, 129, 0.08); border: 1px solid rgba(16, 185, 129, 0.2); border-radius: var(--radius-md); color: #10b981; font-size: 0.9rem; font-weight: 600; margin-top: 20px; }
.privacy-notice svg { width: 16px; height: 16px; flex-shrink: 0; }

/* Toast */
.toast-notification { position: fixed; bottom: 24px; right: 24px; background: var(--card-bg); color: var(--text-main); padding: 14px 24px; border-radius: var(--radius-md); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15); font-weight: 600; font-size: 0.95rem; transform: translateY(100px); opacity: 0; transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55); z-index: 1000; display: flex; align-items: center; gap: 10px; border-left: 4px solid var(--success, #10b981); max-width: 360px; }
.toast-notification.show { transform: translateY(0); opacity: 1; }
.toast-notification.error { border-left-color: var(--danger, #ef4444); }
.toast-notification svg { width: 18px; height: 18px; flex-shrink: 0; }

/* Error */
.converter-error { background: rgba(239, 68, 68, 0.08); color: #ef4444; padding: 12px 16px; border-radius: var(--radius-md); margin-top: 12px; font-weight: 500; font-size: 0.9rem; border: 1px solid rgba(239, 68, 68, 0.2); display: none; align-items: center; gap: 8px; }
.converter-error.show { display: flex; }
.converter-error svg { width: 18px; height: 18px; flex-shrink: 0; }

/* Dark Mode Fixes */
[data-theme="dark"] .qr-display.has-qr { background: #ffffff; }
[data-theme="dark"] .scanner-result-content { background: #1e293b; color: #f1f5f9; border-color: #334155; }
[data-theme="dark"] .scanner-upload-area { background: var(--card-bg); }
[data-theme="dark"] .scanner-method-card { background: var(--card-bg); }
[data-theme="dark"] .color-input-wrapper { background: var(--card-bg); border-color: var(--border-color); }
[data-theme="dark"] .form-control { background: var(--card-bg); border-color: var(--border-color); color: var(--text-main); }
[data-theme="dark"] .toast-notification { background: var(--card-bg); border-color: var(--border-color); }
[data-theme="dark"] .converter-error { background: rgba(239, 68, 68, 0.12); }
[data-theme="dark"] .scanner-result.success { background: rgba(16, 185, 129, 0.08); }
[data-theme="dark"] .qr-display { background: var(--card-bg); border-color: var(--border-color); }
[data-theme="dark"] .btn-secondary { background-color: var(--card-bg); border-color: var(--border-color); color: var(--text-main); }
[data-theme="dark"] .btn-secondary:hover { background-color: var(--bg-color); border-color: var(--text-muted); }

/* Responsive */
@media (max-width: 1024px) {
    .generator-layout { grid-template-columns: 1fr 1fr; gap: 20px; }
}
@media (max-width: 900px) {
    .generator-layout { grid-template-columns: 1fr; gap: 32px; }
    .qr-display { max-width: 300px; margin: 0 auto; }
    .qr-actions { max-width: 300px; margin: 0 auto; }
}
@media (max-width: 768px) {
    .tab-nav { margin-bottom: 20px; }
    .qr-type-selector { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 6px; }
}
@media (max-width: 600px) {
    .tab-btn { padding: 10px 14px; font-size: 0.85rem; }
    .qr-type-selector { grid-template-columns: repeat(3, 1fr); }
    .color-row { flex-direction: column; gap: 12px; }
    .scanner-methods { grid-template-columns: 1fr; }
    .generate-row { flex-direction: column; }
    .generate-row .btn { width: 100%; }
    .qr-actions { flex-direction: column; }
    .qr-actions .btn { width: 100%; min-width: unset; }
    .scanner-result-actions { flex-direction: column; }
    .scanner-result-actions .btn { width: 100%; }
    .camera-container { max-width: 100%; }
}
@media (max-width: 425px) {
    .qr-type-selector { grid-template-columns: repeat(2, 1fr); }
    .qr-display { max-width: 250px; }
    .qr-actions { max-width: 250px; }
}
@media (max-width: 375px) {
    .tab-btn { padding: 8px 10px; font-size: 0.8rem; }
    .qr-type-btn { padding: 6px 8px; font-size: 0.75rem; }
}
@media (max-width: 320px) {
    .qr-type-selector { grid-template-columns: 1fr 1fr; gap: 4px; }
    .qr-type-btn { padding: 6px 6px; font-size: 0.7rem; }
}