/* 리셋 및 기본 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
  /* 보라색 계열 테마 색상 */
  --primary-50: #f5f3ff;
  --primary-100: #ede9fe;
  --primary-200: #ddd6fe;
  --primary-300: #c4b5fd;
  --primary-400: #a78bfa;
  --primary-500: #8b5cf6;
  --primary-600: #7c3aed;
  --primary-700: #6d28d9;
  --primary-800: #5b21b6;
  --primary-900: #4c1d95;
  
  /* 중성 색상 */
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  
  /* 시스템 색상 */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* 글래스모피즘 효과 */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --glass-blur: blur(8px);
  
  /* 다크 모드 글래스모피즘 */
  --dark-glass-bg: rgba(23, 23, 23, 0.75);
  --dark-glass-border: rgba(66, 66, 66, 0.5);

  --primary-color: #8b5cf6;
  --primary-dark: #6d28d9;
  --primary-light: #c4b5fd;
  --secondary-color: #f3f4f6;
  --secondary-dark: #e5e7eb;
  --text-color: #374151;
  --text-light: #6b7280;
  --background-color: #ffffff;
  --border-color: #e5e7eb;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --header-height: 60px;
  --sidebar-width: 250px;
  --border-radius: 8px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
    color: var(--neutral-800);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dark body {
    background: linear-gradient(135deg, var(--neutral-900) 0%, var(--neutral-800) 100%);
    color: var(--neutral-100);
}

/* 헤더 스타일 */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.dark .header {
    background: var(--dark-glass-bg);
    border-bottom: 1px solid var(--dark-glass-border);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    align-items: center;
}

.header-logo {
    color: var(--primary-700);
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-logo svg {
    color: var(--primary-600);
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-right: 1rem;
    display: none;
}

/* 레이아웃 */
.container {
    display: flex;
    max-width: 1200px;
    margin: 60px auto 0;
    padding: 1rem;
    gap: 2rem;
}

/* 사이드바 */
.sidebar {
    width: 250px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 1rem;
    border-radius: 8px;
}

.dark .sidebar {
    background: var(--dark-glass-bg);
    border-right: 1px solid var(--dark-glass-border);
}

.nav-menu .category {
    margin-bottom: 1.5rem;
}

.nav-menu h3 {
    font-size: 1rem;
    color: #333;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #eee;
}

.nav-menu ul {
    list-style: none;
}

.nav-menu li a {
    display: block;
    padding: 0.5rem;
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 4px;
}

.nav-menu li a:hover {
    background-color: #f0f0f0;
    color: #333;
}

.dark .nav-menu li a:hover {
    background-color: rgba(124, 58, 237, 0.2);
    color: var(--primary-300);
}

.nav-menu li a.active {
    background-color: var(--primary-100);
    color: var(--primary-700);
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.dark .nav-menu li a.active {
    background-color: rgba(124, 58, 237, 0.3);
    color: var(--primary-300);
}

/* 메인 콘텐츠 */
.main-content {
    flex: 1;
    background: #ffffff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .sidebar-toggle {
        display: block;
    }

    .container {
        flex-direction: column;
    }

    .sidebar {
        display: none;
        width: 100%;
    }

    .sidebar.active {
        display: block;
    }
}

/* 푸터 스타일 */
/* style.css에 추가할 푸터 스타일 */
.footer {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    padding: 2rem 0;
    margin-top: 2rem;
}

.dark .footer {
    background: var(--dark-glass-bg);
    border-top: 1px solid var(--dark-glass-border);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--neutral-700);
    font-weight: 500;
}

.dark .footer-logo {
    color: var(--neutral-300);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: var(--neutral-600);
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--primary-600);
}

.dark .footer-link {
    color: var(--neutral-400);
}

.dark .footer-link:hover {
    color: var(--primary-400);
}

.footer-copyright {
    color: var(--neutral-500);
    font-size: 0.875rem;
}

.dark .footer-copyright {
    color: var(--neutral-500);
}

/* 콘텐츠 카드 스타일 */
.content-card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.content-card h1 {
    font-size: 1.875rem;
    color: #111;
    margin-bottom: 1rem;
}

.content-card .last-update {
    color: #666;
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.content-card section {
    margin-bottom: 2rem;
}

.content-card h2 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.content-card p {
    color: #444;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.content-card ul {
    list-style: disc;
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.content-card li {
    color: #444;
    margin-bottom: 0.5rem;
}

/* 도구 카드 스타일 */
.tool-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.dark .tool-card {
    background: rgba(38, 38, 38, 0.7);
    border: 1px solid var(--dark-glass-border);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.tool-card-content {
    padding: 1.5rem;
}

.tool-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: white;
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
}

.tool-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: 0.5rem;
}

.dark .tool-card-title {
    color: var(--neutral-100);
}

.tool-card-description {
    color: var(--neutral-600);
    font-size: 0.875rem;
}

.dark .tool-card-description {
    color: var(--neutral-400);
}

/* 버튼 스타일 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    box-shadow: 0 4px 6px -1px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background-color: var(--neutral-100);
    color: var(--neutral-700);
    border: 1px solid var(--neutral-200);
}

.dark .btn-secondary {
    background-color: var(--neutral-800);
    color: var(--neutral-300);
    border: 1px solid var(--neutral-700);
}

.btn-secondary:hover {
    background-color: var(--neutral-200);
    color: var(--neutral-800);
}

.dark .btn-secondary:hover {
    background-color: var(--neutral-700);
    color: var(--neutral-200);
}

/* 입력 필드 스타일 */
.input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--neutral-300);
    border-radius: 0.5rem;
    background-color: white;
    transition: all 0.2s ease;
}

.dark .input {
    background-color: var(--neutral-800);
    border-color: var(--neutral-700);
    color: var(--neutral-200);
}

.input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.dark .input:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.3);
}

/* 검색 컨테이너 */
.search-container {
    position: relative;
    max-width: 24rem;
}

.search-container svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--neutral-500);
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--neutral-300);
    border-radius: 9999px;
    background-color: white;
    transition: all 0.2s ease;
}

.dark .search-input {
    background-color: var(--neutral-800);
    border-color: var(--neutral-700);
    color: var(--neutral-200);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

/* 테마 토글 버튼 */
.theme-toggle {
    position: fixed;
    right: 1.5rem;
    bottom: 1.5rem;
    z-index: 100;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border: none;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 알림 스타일 */
.notification {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    transition: opacity 0.3s ease;
}

/* 로딩 애니메이션 */
.loading-spinner {
    border: 3px solid rgba(139, 92, 246, 0.3);
    border-radius: 50%;
    border-top: 3px solid var(--primary-600);
    width: 2rem;
    height: 2rem;
    animation: spin 1s linear infinite;
}

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

/* 마이크로 인터랙션 */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 2s infinite;
}

/* 스크롤바 스타일 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--neutral-100);
}

.dark ::-webkit-scrollbar-track {
    background: var(--neutral-800);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-400);
}

.dark ::-webkit-scrollbar-thumb {
    background: var(--primary-700);
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: var(--primary-600);
}

.dark .tool-name {
    color: var(--neutral-100);
}

.tool-description {
    color: var(--neutral-600);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.dark .tool-description {
    color: var(--neutral-400);
}

.favorite-btn {
    background: none;
    border: none;
    color: var(--neutral-400);
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

.favorite-btn:hover {
    color: var(--warning);
    background-color: rgba(245, 158, 11, 0.1);
}

.favorite-btn.active {
    color: var(--warning);
}

/* 도구 상세 페이지 */
.tool-details {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.dark .tool-details {
    background: var(--dark-glass-bg);
    border: 1px solid var(--dark-glass-border);
}

.tool-details-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
}

.back-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    color: var(--neutral-600);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.back-button:hover {
    background-color: var(--neutral-100);
    color: var(--neutral-800);
}

.dark .back-button {
    color: var(--neutral-400);
}

.dark .back-button:hover {
    background-color: var(--neutral-800);
    color: var(--neutral-200);
}

.tool-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--neutral-800);
}

.dark .tool-title {
    color: var(--neutral-100);
}

.tool-details-content {
    color: var(--neutral-700);
}

.dark .tool-details-content {
    color: var(--neutral-300);
}

/* 유틸리티 클래스 */
.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 {
    gap: 0.25rem;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.w-full {
    width: 100%;
}

.h-full {
    height: 100%;
}

.rounded-full {
    border-radius: 9999px;
}

.rounded-lg {
    border-radius: 0.5rem;
}

.rounded-md {
    border-radius: 0.375rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-4 {
    padding: 1rem;
}

.py-2 {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

.text-center {
    text-align: center;
}

.text-sm {
    font-size: 0.875rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

/* 버튼 스타일 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.2s ease;
    padding: 0.5rem 1rem;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn-secondary {
    background-color: var(--neutral-100);
    color: var(--neutral-700);
    border: 1px solid var(--neutral-200);
}

.btn-secondary:hover {
    background-color: var(--neutral-200);
}

.dark .btn-secondary {
    background-color: var(--neutral-800);
    color: var(--neutral-300);
    border: 1px solid var(--neutral-700);
}

.dark .btn-secondary:hover {
    background-color: var(--neutral-700);
}

.btn-outline {
    background: none;
    color: var(--primary-600);
    border: 1px solid var(--primary-600);
}

.btn-outline:hover {
    background-color: rgba(124, 58, 237, 0.1);
}

.dark .btn-outline {
    color: var(--primary-400);
    border: 1px solid var(--primary-400);
}

.dark .btn-outline:hover {
    background-color: rgba(124, 58, 237, 0.2);
}