/**
 * 국회도서관 우편복사 - 사용자 페이지 메인 CSS
 * 반응형 레이아웃 (PC, 태블릿, 모바일)
 */

/* ========================================
   1. 전역 스타일
======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --text-dark: #2d3748;
    --text-gray: #4a5568;
    --text-light: #718096;
    --bg-white: #ffffff;
    --bg-gray: #f7fafc;
    --bg-light: #edf2f7;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

body.nbc-user-body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-gray);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========================================
   2. 헤더
======================================== */

.nbc-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nbc-header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nbc-logo h1 {
    font-size: 22px;
    font-weight: 700;
    margin: 0;
    color: white;
}

/* 햄버거 메뉴 버튼 (기본 숨김) */
.nbc-mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nbc-mobile-menu-btn span {
    width: 100%;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.nbc-mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nbc-mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.nbc-mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 네비게이션 */
.nbc-nav ul {
    list-style: none;
    display: flex;
    gap: 5px;
    margin: 0;
    padding: 0;
}

.nbc-nav li {
    margin: 0;
}

.nbc-nav a {
    display: block;
    padding: 10px 20px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nbc-nav a:hover {
    background: rgba(255, 255, 255, 0.15);
}

.nbc-nav li.active a {
    background: rgba(255, 255, 255, 0.25);
    font-weight: 600;
}

/* 모바일 오버레이 (기본 숨김) */
.nbc-mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nbc-mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* ========================================
   3. 메인 컨테이너
======================================== */

.nbc-main-container {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 20px;
}

/* ========================================
   4. 공통 컴포넌트
======================================== */

/* 페이지 제목 */
.nbc-page-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
}

/* 카드 */
.nbc-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 30px;
}

.nbc-card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

/* 버튼 */
.nbc-btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
}

.nbc-btn-primary {
    background: var(--primary-color);
    color: white;
}

.nbc-btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.nbc-btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.nbc-btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.nbc-btn-success {
    background: var(--success-color);
    color: white;
}

.nbc-btn-danger {
    background: var(--danger-color);
    color: white;
}

.nbc-btn-block {
    width: 100%;
    display: block;
}

.nbc-btn-lg {
    padding: 15px 40px;
    font-size: 18px;
}

.nbc-btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

/* 폼 요소 */
.nbc-form-group {
    margin-bottom: 25px;
}

.nbc-form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 15px;
}

.nbc-form-group .required {
    color: var(--danger-color);
    margin-left: 4px;
}

.nbc-input,
.nbc-textarea,
.nbc-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    transition: all 0.2s;
    font-family: inherit;
}

.nbc-input:focus,
.nbc-textarea:focus,
.nbc-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

.nbc-textarea {
    resize: vertical;
    min-height: 100px;
}

/* 라디오/체크박스 */
.nbc-radio-group,
.nbc-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nbc-radio-group label,
.nbc-checkbox-group label {
    display: flex;
    align-items: center;
    padding: 14px 18px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.nbc-radio-group label:hover,
.nbc-checkbox-group label:hover {
    border-color: var(--primary-color);
    background: #f7fafc;
}

.nbc-radio-group input[type="radio"],
.nbc-checkbox-group input[type="checkbox"] {
    margin-right: 12px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.nbc-radio-group input[type="radio"]:checked + span,
.nbc-radio-group label:has(input:checked),
.nbc-checkbox-group input[type="checkbox"]:checked + span,
.nbc-checkbox-group label:has(input:checked) {
    background: #edf2f7;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 검색 박스 */
.nbc-search-box {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
}

.nbc-search-container {
    display: flex;
    gap: 15px;
}

.nbc-search-input {
    flex: 1;
}

/* 테이블 */
.nbc-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.nbc-table th {
    background: var(--bg-light);
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border-color);
}

.nbc-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.nbc-table tr:last-child td {
    border-bottom: none;
}

.nbc-table tr:hover {
    background: var(--bg-gray);
}

/* 알림 메시지 */
.nbc-alert {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border-left: 4px solid;
}

.nbc-alert-info {
    background: #ebf8ff;
    border-color: #3182ce;
    color: #2c5282;
}

.nbc-alert-success {
    background: #f0fff4;
    border-color: var(--success-color);
    color: #276749;
}

.nbc-alert-warning {
    background: #fffaf0;
    border-color: var(--warning-color);
    color: #7c2d12;
}

.nbc-alert-danger {
    background: #fff5f5;
    border-color: var(--danger-color);
    color: #742a2a;
}

/* 로딩 */
.nbc-loading {
    text-align: center;
    padding: 40px;
}

.nbc-loading-spinner {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 5px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: nbc-spin 1s linear infinite;
}

@keyframes nbc-spin {
    to { transform: rotate(360deg); }
}

/* 빈 상태 */
.nbc-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.nbc-empty-icon {
    font-size: 60px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.nbc-empty-text {
    font-size: 18px;
    color: var(--text-gray);
}

/* ========================================
   5. 푸터
======================================== */

.nbc-footer {
    background: var(--text-dark);
    color: white;
    padding: 40px 20px 20px;
    margin-top: auto;
}

.nbc-footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.nbc-footer-info {
    margin-bottom: 20px;
    line-height: 1.8;
}

.nbc-footer-info p {
    margin: 5px 0;
    color: rgba(255, 255, 255, 0.8);
}

.nbc-footer-info strong {
    color: white;
    font-size: 18px;
}

.nbc-footer-copyright {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* ========================================
   6. 반응형 (태블릿: 768px ~ 1024px)
======================================== */

@media (max-width: 1024px) {
    .nbc-main-container {
        padding: 30px 15px;
    }
    
    .nbc-page-title {
        font-size: 28px;
    }
    
    .nbc-card {
        padding: 25px;
    }
}

/* ========================================
   7. 주문 페이지 전용 스타일
======================================== */

.nbc-book-summary-item {
    display: flex;
    align-items: flex-start;
    padding: 15px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 15px;
    transition: all 0.2s;
}

.nbc-book-summary-item:hover {
    border-color: var(--primary-color);
}

.nbc-book-summary-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    flex-shrink: 0;
    margin-right: 15px;
}

.nbc-book-summary-info {
    flex: 1;
}

.nbc-book-summary-info strong {
    font-size: 16px;
    color: var(--text-dark);
    display: block;
    margin-bottom: 8px;
}

.nbc-book-summary-info small {
    color: var(--text-gray);
    line-height: 1.6;
}

.nbc-book-summary-total {
    padding: 15px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px solid var(--primary-color);
}

.nbc-book-summary-total strong {
    color: var(--primary-color);
    font-size: 18px;
}

/* ========================================
   비활성화 스타일
======================================== */

.nbc-disabled {
    opacity: 0.4;
    cursor: not-allowed !important;
    pointer-events: none;
}

.nbc-disabled input[type="radio"] {
    cursor: not-allowed !important;
}

.nbc-disabled label {
    cursor: not-allowed !important;
    color: var(--text-light) !important;
}

/* ========================================
   도서별 제본 선택
======================================== */

.nbc-binding-books-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nbc-binding-book-item {
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    transition: all 0.3s ease;
}

.nbc-binding-book-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.nbc-binding-book-item.selected {
    border-color: var(--primary-color);
    background: rgba(102, 126, 234, 0.05);
}

.nbc-binding-book-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
}

.nbc-binding-book-checkbox input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.nbc-binding-book-info {
    flex: 1;
}

.nbc-binding-book-title {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
    font-size: 15px;
}

.nbc-binding-book-pages {
    color: var(--text-gray);
    font-size: 14px;
    margin-bottom: 6px;
}

.nbc-binding-book-price {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

.nbc-binding-book-price.no-binding {
    color: var(--text-light);
    font-weight: normal;
}