@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

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

        :root {
            --primary: #6366f1;
            --secondary: #8b5cf6;
            --accent: #ec4899;
    --dark: #100f0f;
            --dark-light: #1e293b;
            --text: #f1f5f9;
            --text-secondary: #94a3b8;
            --border: rgba(255, 255, 255, 0.1);
            --glass: rgba(255, 255, 255, 0.05);
        }

        body {
            font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif;
            background: var(--dark);
            color: var(--text);
            min-height: 100vh;
            position: relative;
            overflow-x: hidden;
        }

        /* Animated Background */



        /* Header */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(24, 24, 24, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        header.scrolled {
            background: rgba(15, 23, 42, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 16px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        /* Logo - Minimalist */
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            position: relative;
            z-index: 2;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .logo-icon::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transform: rotate(45deg);
            animation: shimmer 3s infinite;
        }

        @keyframes shimmer {
            0% { transform: translateX(-100%) rotate(45deg); }
            100% { transform: translateX(100%) rotate(45deg); }
        }
/* 로그인 모달 */
#login-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    max-width: 450px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 10001;
}

body.light-mode .modal-content {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

body:not(.light-mode) .modal-content {
    background: rgba(30, 41, 59, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 닫기 버튼 */
.close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    backdrop-filter: blur(6px);
    color: #6366f1;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: scale(1.1) rotate(90deg);
}
        .logo-icon .logo-img {
            width: 24px;
            height: 24px;
            position: relative;
            z-index: 1;
            filter: brightness(0) invert(1);
        }

        .logo:hover .logo-icon {
            transform: scale(1.1) rotate(-5deg);
            box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
        }

        .logo-text {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: all 0.3s ease;
        }

        /* Search - Floating Style */
        .search-container {
            flex: 1;
            max-width: 500px;
            position: relative;
        }

        .search-box {
            position: relative;
            width: 100%;
        }

        .search-input {
            width: 100%;
            padding: 14px 50px 14px 20px;
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: 16px;
            color: var(--text);
            font-size: 14px;
            font-weight: 400;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .search-input:focus {
            outline: none;
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
        }

        .search-input::placeholder {
            color: var(--text-secondary);
        }

        .search-btn {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border: none;
            border-radius: 10px;
            color: white;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .search-btn:hover {
            transform: translateY(-50%) scale(1.05);
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
        }

        /* Navigation */
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-item {
            padding: 10px 20px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            border-radius: 12px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .nav-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: -1;
        }

        .nav-item:hover {
            color: white;
        }

        .nav-item:hover::before {
            opacity: 0.15;
        }

        /* CTA Button */
        .cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            padding: 11px 24px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: none;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1.5px solid var(--border);
        }

        .btn-outline:hover {
            background: var(--glass);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
            position: relative;
            overflow: hidden;
        }

        .btn-primary::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 ease;
        }

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

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
        }

        /* Theme Toggle */
        .theme-toggle {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--glass);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .theme-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
            transform: rotate(180deg) scale(1.05);
        }

        /* Mobile Menu */
        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--glass);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 22px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(15, 23, 42, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 20px 32px;
            animation: slideDown 0.3s ease;
        }

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

        .mobile-menu.active {
            display: block;
        }

        .mobile-menu-items {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu .nav-item {
            padding: 16px 20px;
            background: var(--glass);
            border: 1px solid var(--border);
        }

        /* Hero Content */
        .hero {
            padding-top: 160px;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 64px;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(135deg, white, var(--text-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: fadeInUp 0.8s ease;
        }

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

        .hero p {
            font-size: 20px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            animation: fadeInUp 0.8s ease 0.2s backwards;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease 0.4s backwards;
        }

        /* Mobile Menu Toggle (Hamburger) */
        .mobile-menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            padding: 0;
        }

        .hamburger-line {
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }

        .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile Side Menu */
        .mobile-side-menu {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            z-index: 9999;
            visibility: hidden;
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s ease;
        }

        .mobile-side-menu.active {
            visibility: visible;
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(4px);
        }

        .mobile-menu-content {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 280px;
            max-width: 85%;
            background: rgba(15, 23, 42, 0.98);
            backdrop-filter: blur(20px);
            border-left: 1px solid var(--border);
            transform: translateX(100%);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }

        .mobile-side-menu.active .mobile-menu-content {
            transform: translateX(0);
        }

        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px;
            border-bottom: 1px solid var(--border);
        }

        .menu-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
        }

        .close-menu-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--glass);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .close-menu-btn:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }

        .mobile-nav {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px;
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: 12px;
            color: var(--text);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .mobile-nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
            transform: translateX(-4px);
        }

        .nav-icon {
            font-size: 20px;
        }

        .mobile-menu-divider {
            height: 1px;
            background: var(--border);
            margin: 12px 0;
        }

        .mobile-login-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border: none;
            color: white;
            font-weight: 600;
        }

        .mobile-login-btn:hover {
            transform: translateX(-4px) scale(1.02);
        }

        .mobile-theme-toggle {
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .mobile-theme-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }

        .mobile-logout-btn {
            color: var(--text-secondary);
        }

        /* Desktop Only */
        .desktop-only {
            display: flex;
        }

        /* Responsive */
        @media (max-width: 968px) {
            .nav-menu {
                display: none;
            }

            .hero h1 {
                font-size: 48px;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                padding: 14px 20px;
                gap: 12px;
            }

            .desktop-only {
                display: none !important;
            }

            .mobile-menu-toggle {
                display: flex;
            }

            .search-container {
                flex: 1;
                max-width: 400px;
            }

            .logo-text {
                font-size: 20px;
            }
            .logo-text {
                display: none;
            }
            .theme-toggle {
                width: 40px;
                height: 40px;
            }

            .hero {
                padding-top: 140px;
            }

            .hero h1 {
                font-size: 40px;
            }

            .hero p {
                font-size: 18px;
            }
        }

        @media (max-width: 480px) {
            .nav-container {
                padding: 12px 16px;
                gap: 8px;
            }

  

            .logo-icon {
                width: 36px;
                height: 36px;
            }

            .search-container {
                flex: 1;
                max-width: none;
            }

            .search-input {
                padding: 12px 45px 12px 16px;
                font-size: 13px;
            }

            .theme-toggle {
                width: 36px;
                height: 36px;
                font-size: 18px;
            }

            .mobile-menu-toggle {
                width: 40px;
                height: 40px;
            }

            .hamburger-line {
                width: 18px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p {
                font-size: 16px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }
        }

        /* Light Mode */
        body.light-mode {
            --dark: #ffffff;
            --dark-light: #f8fafc;
            --text: #0f172a;
            --text-secondary: #475569;
            --border: rgba(0, 0, 0, 0.1);
            --glass: rgba(0, 0, 0, 0.03);
        }

        body.light-mode::before {
            background: 
                radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 40% 90%, rgba(236, 72, 153, 0.05) 0%, transparent 50%);
        }

        body.light-mode header {
            background: rgba(255, 255, 255, 0.8);
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }

        body.light-mode header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        }

        body.light-mode .logo-icon .logo-img {
            filter: none;
        }

        body.light-mode .search-input {
            background: rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(0, 0, 0, 0.1);
        }

        body.light-mode .search-input:focus {
            background: white;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
        }

        body.light-mode .mobile-menu {
            background: rgba(255, 255, 255, 0.98);
        }

        body.light-mode .mobile-menu-content {
            background: rgba(255, 255, 255, 0.98);
        }

        body.light-mode .mobile-menu-overlay {
            background: rgba(0, 0, 0, 0.5);
        }