/**
 * 뉴토끼 가이드 스타일시트
 * 다크 테마 디자인
 */

/* ========================================
   CSS 변수
   ======================================== */
:root {
    /* 라이트 테마 색상 (미색/베이지) */
    --nt-bg-dark: #f5f0e6;
    --nt-bg-card: #ffffff;
    --nt-bg-card-hover: #fafafa;
    --nt-primary: #3b82f6;
    --nt-primary-light: #60a5fa;
    --nt-accent: #22c55e;
    --nt-accent-hover: #16a34a;
    --nt-success: #22c55e;
    --nt-text: #1f2937;
    --nt-text-muted: #6b7280;
    --nt-border: #e5e7eb;
    
    /* 타이포그래피 */
    --nt-font: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 간격 */
    --nt-space-sm: 0.5rem;
    --nt-space-md: 1rem;
    --nt-space-lg: 1.5rem;
    --nt-space-xl: 2rem;
    --nt-space-2xl: 3rem;
    --nt-space-3xl: 4rem;
    
    /* 테두리 */
    --nt-radius: 4px;
    --nt-radius-lg: 6px;
    --nt-radius-xl: 8px;
    
    /* 컨테이너 */
    --nt-max-width: 900px;
}

/* ========================================
   리셋 & 기본
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--nt-font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--nt-text);
    background-color: var(--nt-bg-dark);
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d4c4a8' fill-opacity='0.3'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    min-height: 100vh;
}

a {
    color: var(--nt-primary-light);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--nt-accent);
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

/* ========================================
   컨테이너
   ======================================== */
.nt-container {
    width: 100%;
    max-width: var(--nt-max-width);
    margin: 0 auto;
    padding: 0 var(--nt-space-md);
}

/* ========================================
   헤더
   ======================================== */
.nt-header {
    background: #ffffff;
    border-bottom: 1px solid var(--nt-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nt-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--nt-space-md) 0;
}

.nt-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--nt-text);
}

.nt-logo:hover {
    color: var(--nt-primary-light);
}

.nt-logo__img {
    height: 36px;
}

/* 네비게이션 */
.nt-nav__list {
    display: flex;
    gap: var(--nt-space-sm);
}

.nt-nav__link {
    padding: 0.5rem 1rem;
    color: var(--nt-text-muted);
    border-radius: var(--nt-radius);
    transition: all 0.2s;
}

.nt-nav__link:hover {
    color: var(--nt-text);
    background: var(--nt-bg-card);
}

.nt-nav__link--highlight {
    background: var(--nt-primary);
    color: white !important;
}

.nt-nav__link--highlight:hover {
    background: var(--nt-primary-light);
}

/* 모바일 메뉴 */
.nt-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
}

.nt-menu-toggle__bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--nt-text);
    margin: 5px 0;
    transition: 0.3s;
}

/* ========================================
   히어로 섹션
   ======================================== */
.nt-hero {
    text-align: center;
    padding: var(--nt-space-3xl) 0;
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    color: #ffffff;
}

/* 히어로 배너 이미지 */
.nt-hero__banner {
    width: 100%;
    margin: 0 0 var(--nt-space-lg) 0;
    border-radius: var(--nt-radius-xl);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: none;
}

.nt-hero__banner-img {
    width: 100%;
    height: auto;
    display: block;
    /* 图片未加载时显示占位背景 */
    background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    min-height: 200px;
}

.nt-hero__badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    margin-bottom: var(--nt-space-lg);
    border: 1px solid rgba(255,255,255,0.3);
}

.nt-hero__title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--nt-space-md);
    line-height: 1.2;
    color: #ffffff;
}

.nt-hero__title span {
    color: #fbbf24;
}

.nt-hero__desc {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto var(--nt-space-xl);
}

/* ========================================
   CTA 버튼
   ======================================== */
.nt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--nt-radius-lg);
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.nt-btn--primary {
    background: var(--nt-accent);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.nt-btn--primary:hover {
    background: var(--nt-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
    color: #ffffff;
}

.nt-btn--secondary {
    background: var(--nt-bg-card);
    color: var(--nt-text);
    border: 1px solid var(--nt-border);
}

.nt-btn--secondary:hover {
    background: var(--nt-bg-card-hover);
    border-color: var(--nt-primary);
    color: var(--nt-text);
}

.nt-btn--large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.nt-btn--exit {
    background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
    color: #000;
    font-size: 1.25rem;
    padding: 1.25rem 3rem;
    box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
}

.nt-btn--exit:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(245, 158, 11, 0.5);
    color: #000;
}

.nt-btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--nt-space-md);
    justify-content: center;
}

/* ========================================
   체크리스트 섹션
   ======================================== */
.nt-section {
    padding: var(--nt-space-lg) 0;
}

.nt-section__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--nt-space-lg);
    text-align: center;
    color: var(--nt-primary);
}

.nt-checklist {
    background: var(--nt-bg-card);
    border: 1px solid var(--nt-border);
    border-radius: var(--nt-radius-xl);
    padding: var(--nt-space-xl);
}

.nt-checklist__item {
    display: flex;
    gap: var(--nt-space-md);
    padding: var(--nt-space-md) 0;
    border-bottom: 1px solid var(--nt-border);
}

.nt-checklist__item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.nt-checklist__item:first-child {
    padding-top: 0;
}

.nt-checklist__icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.nt-checklist__title {
    font-weight: 600;
    color: var(--nt-text);
    margin-bottom: 0.25rem;
}

.nt-checklist__desc {
    color: var(--nt-text);
    font-size: 0.9rem;
}

/* ========================================
   FAQ 아코디언
   ======================================== */
.nt-faq {
    margin-top: var(--nt-space-xl);
}

.nt-faq__item {
    background: var(--nt-bg-card);
    border: 1px solid var(--nt-border);
    border-radius: var(--nt-radius-lg);
    margin-bottom: var(--nt-space-md);
    overflow: hidden;
}

.nt-faq__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--nt-space-lg);
    background: none;
    border: none;
    color: var(--nt-text);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: background 0.2s;
}

.nt-faq__question:hover {
    background: var(--nt-bg-card-hover);
}

.nt-faq__question span:first-child::before {
    content: "Q. ";
    color: var(--nt-primary);
}

.nt-faq__icon {
    color: var(--nt-text-muted);
    transition: transform 0.3s;
}

.nt-faq__item.active .nt-faq__icon {
    transform: rotate(180deg);
}

.nt-faq__answer {
    display: none;
    padding: 0 var(--nt-space-lg) var(--nt-space-lg);
    color: var(--nt-text);
    line-height: 1.8;
}

/* 테이블 */
.nt-table-wrap {
    overflow-x: auto;
    margin-top: var(--nt-space-lg);
}

.nt-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border: 2px solid #3b82f6;
    font-size: 0.875rem;
}

.nt-table th,
.nt-table td {
    padding: 12px 14px;
    border: 1px solid #d1d5db;
    text-align: left;
    vertical-align: top;
    line-height: 1.6;
}

.nt-table th {
    background: #3b82f6;
    color: #fff;
    font-weight: 600;
    text-align: center;
}

.nt-table td:first-child {
    background: #eff6ff;
    font-weight: 600;
    color: #1e40af;
    white-space: nowrap;
}

.nt-table tr:nth-child(even) td:not(:first-child) {
    background: #f9fafb;
}

/* 대체 사이트 */
.nt-alt-sites {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--nt-space-lg);
}

.nt-alt-site {
    text-align: center;
}

.nt-alt-site__logo {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--nt-space-md);
}

.nt-alt-site__logo img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}

.nt-alt-site h3 {
    font-size: 1rem;
    color: var(--nt-text);
    margin-bottom: var(--nt-space-sm);
}

.nt-alt-site p {
    font-size: 0.875rem;
    color: var(--nt-text-muted);
    line-height: 1.7;
    text-align: left;
}

@media (max-width: 768px) {
    .nt-alt-sites {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .nt-alt-sites {
        grid-template-columns: 1fr;
    }
}

.nt-faq__answer::before {
    content: "A. ";
    color: var(--nt-accent);
    font-weight: 600;
}

.nt-faq__item.active .nt-faq__answer {
    display: block;
}

/* ========================================
   카드 그리드
   ======================================== */
.nt-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--nt-space-lg);
}

.nt-card {
    background: var(--nt-bg-card);
    border: 1px solid var(--nt-border);
    border-radius: var(--nt-radius-xl);
    padding: var(--nt-space-lg);
    transition: all 0.3s;
}

.nt-card:hover {
    border-color: var(--nt-primary);
    transform: translateY(-4px);
}

.nt-card__img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: var(--nt-radius);
    margin-bottom: var(--nt-space-md);
}

.nt-card__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.nt-card__desc {
    color: var(--nt-text-muted);
    font-size: 0.9rem;
}

.nt-card__tag {
    display: inline-block;
    background: var(--nt-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-top: var(--nt-space-sm);
}

/* ========================================
   콘텐츠 박스
   ======================================== */
.nt-content {
    background: var(--nt-bg-card);
    border: 1px solid var(--nt-border);
    border-radius: var(--nt-radius-xl);
    padding: var(--nt-space-xl);
    margin: var(--nt-space-xl) 0;
}

.nt-content h2 {
    font-size: 1.25rem;
    color: var(--nt-primary);
    margin-bottom: var(--nt-space-md);
    padding-bottom: var(--nt-space-sm);
    border-bottom: 1px solid var(--nt-border);
}

.nt-content h3 {
    font-size: 1.1rem;
    margin-top: var(--nt-space-lg);
    margin-bottom: var(--nt-space-sm);
    color: var(--nt-text);
}

.nt-content p {
    color: var(--nt-text);
    margin-bottom: var(--nt-space-md);
}

.nt-content ul, .nt-content ol {
    margin: var(--nt-space-md) 0;
    padding-left: var(--nt-space-lg);
}

.nt-content li {
    color: var(--nt-text);
    margin-bottom: 0.5rem;
    position: relative;
}

.nt-content ul li::before {
    content: "•";
    color: var(--nt-primary);
    position: absolute;
    left: -1rem;
}

.nt-content ol {
    counter-reset: item;
}

.nt-content ol li {
    counter-increment: item;
}

.nt-content ol li::before {
    content: counter(item) ".";
    color: var(--nt-primary);
    position: absolute;
    left: -1.5rem;
    font-weight: 600;
}

/* ========================================
   CTA 박스
   ======================================== */
.nt-cta-box {
    background: linear-gradient(135deg, #4285f4 0%, #3367d6 100%);
    border: none;
    border-radius: var(--nt-radius-xl);
    padding: var(--nt-space-2xl);
    text-align: center;
    margin: var(--nt-space-xl) 0;
    color: #ffffff;
}

.nt-cta-box__title {
    font-size: 1.5rem;
    margin-bottom: var(--nt-space-md);
    color: #ffffff;
}

.nt-cta-box__desc {
    color: rgba(255,255,255,0.85);
    margin-bottom: var(--nt-space-lg);
}

.nt-cta-box__url {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    margin-top: var(--nt-space-md);
}

/* ========================================
   관련 링크
   ======================================== */
.nt-related {
    background: var(--nt-bg-card);
    border: 1px solid var(--nt-border);
    border-radius: var(--nt-radius-xl);
    padding: var(--nt-space-lg);
    margin-top: var(--nt-space-xl);
}

.nt-related__title {
    font-size: 1rem;
    margin-bottom: var(--nt-space-md);
    color: var(--nt-text-muted);
}

.nt-related__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--nt-space-sm);
}

.nt-related__item a {
    display: inline-block;
    background: var(--nt-bg-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--nt-radius);
    font-size: 0.9rem;
    border: 1px solid var(--nt-border);
    transition: all 0.2s;
}

.nt-related__item a:hover {
    border-color: var(--nt-primary);
    color: var(--nt-primary-light);
}

/* ========================================
   브레드크럼
   ======================================== */
.nt-breadcrumb {
    padding: var(--nt-space-md) 0;
}

.nt-breadcrumb__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--nt-text-muted);
}

.nt-breadcrumb__item a {
    color: var(--nt-text-muted);
}

.nt-breadcrumb__item a:hover {
    color: var(--nt-primary-light);
}

.nt-breadcrumb__item::after {
    content: "›";
    margin-left: 0.5rem;
}

.nt-breadcrumb__item:last-child::after {
    display: none;
}

/* ========================================
   페이지 헤더
   ======================================== */
.nt-page-header {
    text-align: center;
    padding: var(--nt-space-lg) 0;
    border-bottom: 1px solid var(--nt-border);
    margin-bottom: var(--nt-space-md);
}

.nt-page-header__title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 800;
    margin-bottom: var(--nt-space-sm);
}

.nt-page-header__desc {
    color: var(--nt-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   푸터
   ======================================== */
.nt-footer {
    border-top: 1px solid var(--nt-border);
    padding: var(--nt-space-2xl) 0;
    margin-top: var(--nt-space-3xl);
    text-align: center;
}

.nt-footer__logo {
    margin-bottom: var(--nt-space-md);
}

.nt-footer__logo img {
    height: 30px;
    opacity: 0.7;
}

.nt-footer__links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--nt-space-md);
    margin-bottom: var(--nt-space-lg);
}

.nt-footer__links a {
    color: var(--nt-text-muted);
    font-size: 0.9rem;
}

.nt-footer__links a:hover {
    color: var(--nt-text);
}

.nt-footer__copyright {
    color: var(--nt-text-muted);
    font-size: 0.8rem;
}

.nt-footer__disclaimer {
    font-size: 0.75rem;
    opacity: 0.6;
    margin-top: 0.5rem;
}

/* ========================================
   내부 링크
   ======================================== */
.nt-link {
    color: var(--nt-primary-light);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.nt-link:hover {
    color: var(--nt-accent);
}

/* ========================================
   반응형
   ======================================== */
@media (max-width: 768px) {
    .nt-menu-toggle {
        display: block;
    }
    
    .nt-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--nt-bg-dark);
        border-bottom: 1px solid var(--nt-border);
        padding: var(--nt-space-md);
    }
    
    .nt-nav.active {
        display: block;
    }
    
    .nt-nav__list {
        flex-direction: column;
    }
    
    .nt-nav__link {
        display: block;
        text-align: center;
        padding: var(--nt-space-md);
    }
    
    .nt-hero {
        padding: var(--nt-space-2xl) 0;
    }
    
    .nt-btn-group {
        flex-direction: column;
        align-items: center;
    }
    
    .nt-btn--large {
        width: 100%;
    }
    
    .nt-checklist {
        padding: var(--nt-space-lg);
    }
    
    .nt-content {
        padding: var(--nt-space-lg);
    }
    
    .nt-cta-box {
        padding: var(--nt-space-xl);
    }
}

/* ========================================
   유틸리티
   ======================================== */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--nt-space-lg); }
.mt-xl { margin-top: var(--nt-space-xl); }
.mb-lg { margin-bottom: var(--nt-space-lg); }
.mb-xl { margin-bottom: var(--nt-space-xl); }