/* Modern QR Code Generator Styles */

/* QR 생성기 전체 컨테이너 */
#qr-generator .tool-content {
    background: #ffffff;
    padding: 40px;
    border-radius: 20px;
    margin-top: 20px;
}

/* 데이터 타입 선택 버튼 */
.qr-type-selector {
    margin-bottom: 30px;
}

.type-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.type-btn {
    background: linear-gradient(145deg, #ffffff, #f1f5f9);
    border: 2px solid #cbd5e1;
    color: #334155;
    padding: 16px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.type-btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.type-btn:hover:before {
    left: 100%;
}

.type-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.type-btn.active {
    background: linear-gradient(145deg, #06b6d4, #0891b2);
    border-color: #0891b2;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
}

/* 입력 폼 컨테이너 */
.qr-input-container {
    margin-bottom: 30px;
}

/* 입력 폼 - 최강 가독성 보장 */
.input-form {
    display: none;
    padding: 24px;
    background: #ffffff !important; /* 순백색 배경으로 강제 설정 */
    border-radius: 16px;
    border: 3px solid #6b7280 !important; /* 더 진한 테두리 */
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: #111827 !important; /* 텍스트 색상 강제 설정 */
}

.input-form.active {
    display: block;
    animation: slideInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    color: #1f2937 !important; /* 라벨 텍스트 진한 색상으로 강제 설정 */
    font-size: 14px;
}

.input-group input,
.input-group textarea {
    padding: 14px 16px !important;
    border: 3px solid #6b7280 !important; /* 더 진한 테두리 */
    border-radius: 8px !important;
    font-size: 16px !important; /* 폰트 크기 증가 */
    transition: all 0.3s ease;
    background: #ffffff !important; /* 순백색 배경 강제 */
    color: #111827 !important; /* 진한 검은색 텍스트 강제 */
    font-weight: 600 !important; /* 굵은 글씨 */
}

/* Placeholder 스타일링 - 최강 가독성 */
.input-group input::placeholder,
.input-group textarea::placeholder {
    color: #374151 !important; /* 더욱 진한 색상 */
    opacity: 1 !important;
    font-weight: 600 !important;
}

.input-group input::-webkit-input-placeholder,
.input-group textarea::-webkit-input-placeholder {
    color: #374151 !important;
    opacity: 1 !important;
    font-weight: 600 !important;
}

.input-group input::-moz-placeholder,
.input-group textarea::-moz-placeholder {
    color: #374151 !important;
    opacity: 1 !important;
    font-weight: 600 !important;
}

.input-group input:-ms-input-placeholder,
.input-group textarea:-ms-input-placeholder {
    color: #374151 !important;
    opacity: 1 !important;
    font-weight: 600 !important;
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: #06b6d4;
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
    transform: translateY(-1px);
}

.input-group textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

/* QR 코드 옵션 */
.qr-options {
    background: linear-gradient(145deg, #f0fff4, #e6ffed);
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 30px;
    border: 1px solid #b3f0d1;
    box-shadow: 0 3px 10px rgba(34, 139, 34, 0.08);
    display: flex;
    justify-content: center;
    align-items: center;
}

.options-grid {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 25px;
    flex-wrap: wrap;
    width: 100%;
    max-width: 900px; /* 최대 너비 제한으로 중앙 정렬 강화 */
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .options-grid {
        display: flex;
        flex-direction: row;
        justify-content: center;
        align-items: stretch;
        gap: 20px;
        flex-wrap: wrap;
    }
    
    .option-card {
        width: 260px;
        max-width: 260px;
        flex: 0 0 260px;
    }
}

.option-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 200px;
    width: 280px; /* 고정 너비로 크기 통일 */
    max-width: 280px;
    flex: 0 0 280px; /* 유연한 크기 조절 방지 */
}

.option-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border-color: #22c55e;
}

.option-card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 15px; /* 고정된 마진 */
    font-size: 15px;
    width: 100%;
    height: 25px; /* 고정 높이로 완벽 정렬 */
    line-height: 25px;
    margin-top: 5px !important; /* 상단 마진 고정 */
    padding-top: 0 !important;
}

.option-card-header i {
    color: #22c55e;
    font-size: 16px;
}

/* 크기 선택 */
.size-select {
    width: 100%;
    max-width: 200px;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.size-select:focus {
    outline: none;
    border-color: #22c55e;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

/* 색상 설정 - 개선된 레이아웃 */
.color-controls-improved {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 10px;
}

.color-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    width: 100%;
    max-width: 250px;
    padding: 5px 0;
}

.color-label-left {
    font-size: 14px;
    color: #4b5563;
    font-weight: 500;
    flex-shrink: 0;
    text-align: left;
}

/* 텍스트 설정 - 중앙 정렬 */
.text-controls-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 10px;
    text-align: center;
}

.text-toggle-centered {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.color-picker-wrapper input[type="color"] {
    width: 50px;
    height: 35px;
    border: 2px solid #e5e7eb;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.color-picker-wrapper input[type="color"]:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.color-close-btn {
    background: #22c55e;
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    opacity: 0.8;
}

.color-close-btn:hover {
    opacity: 1;
    transform: scale(1.1);
    background: #16a34a;
}

/* 텍스트 설정 - 토글 및 입력 */
.text-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.text-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 토글 스위치 스타일 */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e1;
    transition: .3s;
    border-radius: 26px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input:checked + .toggle-slider {
    background-color: #22c55e;
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-label {
    font-size: 14px;
    font-weight: 500;
    color: #4b5563;
}

.text-input-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease;
    min-height: 80px;
}

.text-input-wrapper.show {
    visibility: visible;
    opacity: 1;
}

.text-controls-centered input[type="text"] {
    width: 100%;
    max-width: 200px;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: white;
    text-align: center;
}

.text-controls-centered input[type="text"]:focus {
    outline: none;
    border-color: #22c55e;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.text-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #6b7280;
    font-style: italic;
}

.text-hint i {
    color: #3b82f6;
}
    background: white;
    transition: all 0.3s ease;
}

.option-group input[type="text"]:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 액션 버튼 */
.action-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    min-width: 160px;
    justify-content: center;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover:before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(145deg, #06b6d4, #0891b2);
    color: white;
    box-shadow: 0 4px 14px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.5);
}

.btn-download {
    background: linear-gradient(145deg, #22c55e, #16a34a);
    color: white;
    box-shadow: 0 4px 14px rgba(34, 197, 94, 0.4);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.5);
}

/* QR 코드 결과 */
.qr-result {
    text-align: center;
    padding: 40px;
    background: linear-gradient(145deg, #fffbf0, #fff8dc);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(218, 165, 32, 0.1);
    border: 1px solid #f0e68c;
    display: none;
    margin: 0 auto; /* 중앙 정렬 추가 */
    max-width: none; /* 최대 너비 제한 제거 */
    width: 100%;
}

.qr-result.show {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qr-result.show {
    display: block;
    animation: fadeInScale 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.qr-preview {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.qr-preview canvas {
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 3px solid #e2e8f0;
}

.qr-info {
    color: #6b7280;
    font-size: 15px;
    font-weight: 500;
}

.qr-info p {
    margin: 8px 0;
}

/* 로딩 상태 */
.btn.loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid transparent;
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 성공/에러 메시지 */
.success-message, .error-message {
    padding: 16px 24px;
    border-radius: 12px;
    margin: 20px 0;
    font-weight: 600;
    display: none;
    animation: slideDown 0.3s ease-out;
}

.success-message {
    background: linear-gradient(145deg, #d1fae5, #a7f3d0);
    color: #065f46;
    border: 2px solid #10b981;
}

.error-message {
    background: linear-gradient(145deg, #fef2f2, #fecaca);
    color: #991b1b;
    border: 2px solid #ef4444;
}

.success-message.show, .error-message.show {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .type-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .type-btn {
        padding: 12px 16px;
        font-size: 14px;
    }
    
    .input-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .options-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .option-card {
        padding: 16px;
        min-height: 180px;
    }
    
    .color-controls {
        gap: 12px;
    }
    
    .color-controls-horizontal {
        gap: 12px;
    }
    
    .color-controls-improved {
        gap: 12px;
        padding: 8px;
    }
    
    .color-row {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 10px;
        max-width: 100%;
        padding: 8px 0;
    }
    
    .color-label-left {
        text-align: left;
        min-width: auto;
        font-size: 13px;
        flex: 1;
    }
    
    .text-controls-centered {
        padding: 8px;
    }
    
    .text-controls-centered input[type="text"] {
        max-width: 100%;
    }
    
    .size-select {
        max-width: 100%;
    }
    
    .toggle-switch {
        width: 44px;
        height: 24px;
    }
    
    .toggle-slider:before {
        height: 18px;
        width: 18px;
        left: 3px;
        bottom: 3px;
    }
    
    input:checked + .toggle-slider:before {
        transform: translateX(20px);
    }
    
    .qr-result {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    #qr-generator .tool-content {
        padding: 20px;
    }
    
    .type-buttons {
        grid-template-columns: 1fr;
    }
    
    .qr-options {
        padding: 20px;
    }
    
    .options-grid {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 15px;
    }
    
    .option-card {
        width: 100%;
        max-width: 320px;
        flex: none;
    }
    
    .option-card {
        padding: 14px;
    }
    
    .qr-result {
        padding: 16px;
    }
}
        gap: 15px;
    }
    
    .options-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .qr-result {
        padding: 24px 16px;
    }
    
    .input-form {
        padding: 20px;
    }
    
    .qr-options {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .type-buttons {
        grid-template-columns: 1fr;
    }
    
    .type-btn {
        padding: 14px;
        text-align: center;
    }
}

/* 다크모드 대응 */
@media (prefers-color-scheme: dark) {
    .input-form {
        background: linear-gradient(145deg, #1f2937, #111827);
        border-color: #374151;
    }
    
    .qr-options {
        background: linear-gradient(145deg, #1f2937, #111827);
        border-color: #374151;
    }
    
    .input-group input,
    .input-group textarea,
    .option-group select,
    .option-group input[type="text"] {
        background: #111827;
        border-color: #374151;
        color: #f3f4f6;
    }
    
    .input-group label,
    .option-group label {
        color: #e5e7eb;
    }
    
    .type-btn {
        background: linear-gradient(145deg, #374151, #1f2937);
        border-color: #374151;
        color: #e5e7eb;
    }
    
    .qr-result {
        background: linear-gradient(145deg, #1f2937, #111827);
        border-color: #374151;
    }
    
    .qr-info {
        color: #9ca3af;
    }
}

/* QR코드 가이드 콘텐츠 스타일 */
.qr-guide-content {
    margin-top: 40px;
    padding: 30px 0;
    border-top: 2px solid #e2e8f0;
}

.qr-guide-section {
    background: rgba(255, 255, 255, 0.95);
    margin-bottom: 30px;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
}

.qr-guide-section h3 {
    color: #2d3748;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.qr-guide-section h3 i {
    color: #3b82f6;
    font-size: 18px;
}

.qr-guide-section p {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 15px;
}

/* 기능 그리드 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

/* 특징 아이템 배치 - QR 제작 팁 스타일 */
.feature-item {
    background: #ffffff;
    padding: 25px 20px;
    border-radius: 12px;
    text-align: left; /* 왼쪽 정렬로 변경 */
    border: 2px solid #e2e8f0;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: flex-start;
    gap: 15px; /* 아이콘과 콘텐츠 사이 간격 */
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    color: #1e40af !important;
    font-size: 18px;
    font-weight: 700 !important;
    margin: 0 0 8px 0;
    line-height: 1.3;
}

.feature-content p {
    color: #4b5563 !important;
    font-size: 14px;
    margin: 0;
    font-weight: 400;
    line-height: 1.5;
}

.feature-item:hover {
    transform: translateY(-2px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: #3b82f6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.feature-icon i {
    color: white;
    font-size: 24px;
}

.feature-item h4 {
    color: #1e40af !important; /* 제목을 파란색으로 강조 */
    font-size: 18px; /* 크기 증가 */
    font-weight: 700 !important;
    margin: 0 0 12px 0; /* 하단 마진 증가 */
    text-align: center;
}

.feature-item p {
    color: #4b5563 !important; /* 설명은 중간 회색으로 */
    font-size: 14px;
    margin: 0;
    font-weight: 400; /* 채마한 글씨 굵기 */
    line-height: 1.6; /* 줄 간격 늘리기 */
    text-align: center;
}

/* 활용 분야 */
.usage-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.usage-category {
    background: linear-gradient(145deg, #f0fff4, #e6ffed);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #b3f0d1;
}

.usage-category h4 {
    color: #2d3748;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.usage-category h4 i {
    color: #22c55e;
}

.usage-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.usage-category li {
    color: #4a5568;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.usage-category li:before {
    content: "→";
    color: #22c55e;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 팁 그리드 */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.tip-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: linear-gradient(145deg, #fffbf0, #fff8dc);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #f0e68c;
}

.tip-item i {
    color: #f59e0b;
    font-size: 20px;
    margin-top: 2px;
    flex-shrink: 0;
}

.tip-item h4 {
    color: #2d3748;
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 5px 0;
}

.tip-item p {
    color: #4a5568;
    font-size: 14px;
    margin: 0;
    line-height: 1.4;
}

/* 보안 공지 */
.security-notice {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.notice-item {
    padding: 20px;
    border-radius: 12px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.notice-item.safe {
    background: linear-gradient(145deg, #f0fdf4, #dcfce7);
    border: 1px solid #bbf7d0;
}

.notice-item.safe i {
    color: #16a34a;
    font-size: 20px;
    margin-top: 2px;
}

.notice-item.warning {
    background: linear-gradient(145deg, #fef2f2, #fecaca);
    border: 1px solid #fca5a5;
}

.notice-item.warning i {
    color: #dc2626;
    font-size: 20px;
    margin-top: 2px;
}

.notice-item h4 {
    color: #2d3748;
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 10px 0;
}

.notice-item ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.notice-item li {
    color: #4a5568;
    padding: 5px 0;
    padding-left: 15px;
    position: relative;
    font-size: 14px;
}

.notice-item.safe li:before {
    content: "✓";
    color: #16a34a;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.notice-item.warning li:before {
    content: "!";
    color: #dc2626;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* QR 가이드 반응형 디자인 */
@media (max-width: 768px) {
    .qr-guide-content {
        margin-top: 30px;
        padding: 20px 0;
    }
    
    .qr-guide-section {
        padding: 20px;
        margin-bottom: 25px;
    }
    
    .qr-guide-section h3 {
        font-size: 18px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .usage-categories {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .security-notice {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .tip-item, .notice-item {
        flex-direction: column;
        text-align: center;
    }
}