/**
 * iSensIRs 웹사이트 스타일시트
 * 하이테크 건강기술 스타트업 디자인
 */

:root {
    /* 색상 팔레트 */
    --primary-color: #0066ff;
    --primary-dark: #0052cc;
    --primary-light: #3385ff;
    --secondary-color: #00d4ff;
    --accent-color: #ff6b6b;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #0a0e27;
    --border-color: #e0e0e0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* 간격 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* 네비게이션 */
    --navbar-height: 70px; /* 고정 네비게이션 바 높이 */
    
    /* 타이포그래피 */
    --font-primary: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* 전환 효과 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 그림자 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    padding-top: var(--navbar-height); /* 고정 네비게이션 바 아래에서 본문 시작 */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    min-height: var(--navbar-height);
}

.navbar-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: transform var(--transition-base);
}

.navbar-logo:hover {
    transform: scale(1.05);
}

.navbar-logo-img {
    display: block;
    max-height: 44px;
    max-width: 200px;
    width: auto;
    height: auto;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.navbar-item {
    position: relative;
}

.navbar-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-base);
}

.navbar-link:hover {
    color: var(--primary-color);
}

.navbar-link:hover::after {
    width: 100%;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-primary);
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    min-width: 200px;
    padding: var(--spacing-sm) 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    margin-top: var(--spacing-xs);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.dropdown-menu a:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

/* User Dropdown Menu - 오른쪽 정렬 */
.user-dropdown .dropdown-menu {
    left: auto;
    right: 0;
}

.user-menu a {
    white-space: nowrap;
}

.dropdown-arrow {
    transition: transform var(--transition-base);
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* Language Switcher */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* 데스크톱: 모바일 로그인 링크 숨기기 */
.mobile-login-item {
    display: none;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lang-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.lang-link:hover,
.lang-link.active {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.lang-separator {
    color: var(--text-light);
}

.login-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: color var(--transition-base);
}

.login-link:hover {
    color: var(--primary-color);
}

/* Mobile Menu Toggle */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.navbar-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

/* Main Content */
.main-content {
    margin-top: 0;
    padding-top: 0;
}

/* Hero Section */
.hero {
    position: relative;
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero-cta {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Sections */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.card-content {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-links,
.footer-contact {
    list-style: none;
}

.footer-links li,
.footer-contact li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.admin-link {
    color: var(--secondary-color);
    text-decoration: none;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        gap: var(--spacing-md);
        align-items: flex-start;
        max-height: calc(100vh - var(--navbar-height));
        overflow-y: auto;
    }
    
    .navbar-menu.active {
        transform: translateX(0);
    }
    
    .navbar-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .navbar-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .navbar-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .navbar-item {
        width: 100%;
    }
    
    .navbar-link {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-md);
    }
    
    .dropdown-menu {
        position: static;
        top: auto;
        left: auto;
        background-color: transparent;
        border: none;
        box-shadow: none;
        padding-left: var(--spacing-md);
        margin-top: 0;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transform: none;
        transition: max-height var(--transition-base), padding var(--transition-base);
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 500px;
        padding: var(--spacing-xs) 0;
    }
    
    .dropdown-menu li {
        padding: 0;
    }
    
    .dropdown-menu a {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) var(--spacing-2xl);
        color: var(--text-secondary);
        text-decoration: none;
    }
    
    .dropdown-menu a:hover,
    .dropdown-menu a:active {
        background-color: var(--bg-secondary);
        color: var(--primary-color);
    }
    
    .dropdown-arrow {
        transition: transform var(--transition-base);
    }
    
    .dropdown.active .dropdown-arrow {
        transform: rotate(180deg);
    }
    
    .dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    
    /* 모바일: 데스크톱 로그인 링크 숨기기 */
    .desktop-login-link {
        display: none;
    }
    
    /* 모바일: 모바일 로그인 링크 표시 (메뉴 하단) */
    .mobile-login-item {
        display: block;
        border-top: 1px solid var(--border-color);
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
    }
    
    /* 모바일: 한/영 전환을 오른쪽으로 이동 */
    .navbar-actions {
        position: absolute;
        right: var(--spacing-md);
        top: 50%;
        transform: translateY(-50%);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    /* 페이지 콘텐츠 이미지 반응형 처리 */
    .page-content img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        object-fit: contain;
    }
    
    /* 이미지가 컨테이너를 벗어나지 않도록 */
    .page-content {
        overflow-x: hidden;
        word-wrap: break-word;
    }
    
    /* 인라인 스타일이나 width 속성이 있는 이미지도 강제로 반응형 처리 */
    .page-content img[style*="width"],
    .page-content img[width],
    .section-item img[style*="width"],
    .section-item img[width],
    .card-content img[style*="width"],
    .card-content img[width] {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    
    /* 섹션 및 카드 콘텐츠의 이미지도 반응형 처리 */
    .section-item img,
    .card-content img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        object-fit: contain;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
}

/* Admin Styles */
.admin-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.admin-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
}

.admin-btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.admin-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.admin-btn-secondary {
    background: var(--text-secondary);
}

.admin-btn-secondary:hover {
    background: var(--text-primary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    border-radius: 8px;
    overflow: hidden;
}

.admin-table th,
.admin-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.admin-table tr:hover {
    background: var(--bg-secondary);
}

.admin-form {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-textarea {
    min-height: 200px;
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

/* 버튼 스타일 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-width: 160px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    letter-spacing: 0.5px;
}

.btn span {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
}

.btn svg {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover::before {
    width: 400px;
    height: 400px;
}

.btn:active {
    transform: translateY(2px) scale(0.98);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.35), 0 0 0 0 rgba(0, 102, 255, 0.5);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.5), 0 0 0 4px rgba(0, 102, 255, 0.1);
    transform: translateY(-3px) scale(1.02);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-register,
.btn-login {
    font-size: var(--font-size-lg);
    padding: 1.125rem 2.75rem;
    min-width: 200px;
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #f0f0f0 100%);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.2), 0 0 0 0 rgba(0, 102, 255, 0.1);
    transform: translateY(-3px) scale(1.02);
}

.btn-cancel {
    min-width: 160px;
    padding: 1.125rem 2.75rem;
    font-size: var(--font-size-lg);
}

/* 링크 스타일 개선 */
a[href*="login"], 
a[href*="register"],
a[href*="logout"] {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

a[href*="login"]:hover, 
a[href*="register"]:hover,
a[href*="logout"]:hover {
    color: var(--primary-dark);
}

a[href*="login"]::after, 
a[href*="register"]::after,
a[href*="logout"]::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-base);
}

a[href*="login"]:hover::after, 
a[href*="register"]:hover::after,
a[href*="logout"]:hover::after {
    width: 100%;
}

/* 취소 링크 스타일 */
a.btn-secondary,
a[href="/"]:not(.navbar-link):not(.lang-link):not(.navbar-logo) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
    min-width: 120px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

a.btn-secondary:hover,
a[href="/"]:not(.navbar-link):not(.lang-link):not(.navbar-logo):hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.15);
    transform: translateY(-2px);
}

.alert {
    padding: var(--spacing-md);
    border-radius: 6px;
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

/* 페이지 콘텐츠 스타일 */
.page-content {
    line-height: 1.8;
    color: var(--text-primary);
}

.page-content h1,
.page-content h2,
.page-content h3,
.page-content h4,
.page-content h5,
.page-content h6 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    color: var(--text-primary);
}

.page-content h1 {
    font-size: var(--font-size-3xl);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

.page-content h2 {
    font-size: var(--font-size-2xl);
}

.page-content h3 {
    font-size: var(--font-size-xl);
}

.page-content p {
    margin-bottom: var(--spacing-md);
}

.page-content ul,
.page-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.page-content li {
    margin-bottom: var(--spacing-xs);
}

.page-content a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.page-content a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.page-content img {
    max-width: 100%;
    width: auto;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-md) 0;
    display: block;
    box-sizing: border-box;
}

.page-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.page-content code {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
}

.page-content pre {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: 8px;
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.page-content pre code {
    background: none;
    padding: 0;
}

.page-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

/* 일반 테이블 스타일 (specs-table 제외) */
.page-content table:not(.specs-table) th,
.page-content table:not(.specs-table) td {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    text-align: left;
}

.page-content table:not(.specs-table) th {
    background: var(--bg-secondary);
    font-weight: 600;
}

/* Specs Table 스타일 (breathir.html 등에서 사용) */
.page-content .specs-table-container {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: var(--spacing-lg) 0;
}

.page-content .specs-table-container h3 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.page-content .specs-table {
    width: 100%;
    min-width: 800px;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.page-content .specs-table th,
.page-content .specs-table td {
    padding: 15px;
    border: 1px solid var(--border-color);
    text-align: left;
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
}

/* 모든 td에 동일한 스타일 보장 */
.page-content .specs-table td,
.page-content .specs-table tbody td,
.page-content .specs-table tbody td:first-child,
.page-content .specs-table tbody td:nth-child(2) {
    font-size: 1rem;
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
}

.page-content .specs-table th {
    background-color: #f0f4f8;
    color: var(--primary-color);
    font-weight: 700;
    text-align: center;
    font-size: var(--font-size-base);
}

.page-content .specs-table,
.page-content .specs-table th,
.page-content .specs-table td {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

.page-content .specs-table tr:hover {
    background-color: #f8f9fa;
}

.page-content .specs-table-container .disclaimer {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
    margin-top: var(--spacing-md);
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    .page-content .specs-table-container {
        padding: 20px 15px;
        margin-left: -15px;
        margin-right: -15px;
        border-radius: 0;
    }

    .page-content .specs-table {
        min-width: 700px;
    }

    /* 모든 td에 동일한 스타일 강제 적용 - 모든 속성 명시 */
    .page-content .specs-table td,
    .page-content .specs-table-container .specs-table td,
    .page-content .specs-table tbody td,
    .page-content .specs-table tbody td:first-child,
    .page-content .specs-table tbody td:nth-child(2) {
        padding: 12px 10px !important;
        font-size: 1rem !important;
        font-family: var(--font-primary) !important;
        line-height: 1.6 !important;
        color: var(--text-primary) !important;
        text-align: left !important;
        font-weight: normal !important;
        font-style: normal !important;
        text-transform: none !important;
        letter-spacing: normal !important;
        -webkit-text-size-adjust: 100% !important;
        text-size-adjust: 100% !important;
    }

    .page-content .specs-table th {
        padding: 12px 10px !important;
        text-align: center !important;
        font-weight: 700 !important;
        font-size: 1rem !important;
        font-family: var(--font-primary) !important;
        line-height: 1.6 !important;
        color: var(--primary-color) !important;
    }
}

.page-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-lg) 0;
}

/* Hero Section Full Width Background */
.page-content #hero {
    position: relative;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding-left: calc(50vw - 50%);
    padding-right: calc(50vw - 50%);
}

/* Hero Section 내부 콘텐츠는 컨테이너 안에 유지 */
.page-content #hero .hero-content {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 10001;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-body .form-group {
    margin-bottom: var(--spacing-md);
}

.modal-body .form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.modal-body .form-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.modal-body .form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.modal-body .form-input[readonly] {
    background-color: var(--bg-secondary);
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-header,
    .modal-body {
        padding: var(--spacing-md);
    }
}