@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700&display=swap');

:root {
    --primary-color: #0A2C4C; /* 신뢰감을 주는 짙은 남색 */
    --secondary-color: #F0F4F8; /* 부드러운 배경색 */
    --accent-color: #3A7DCA; /* 포인트 색상 */
    --text-color: #333;
    --light-gray: #EAECEF;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #FFFFFF;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
}

/* 헤더 & 네비게이션 */
header {
    background: var(--primary-color);
    color: #fff;
    padding-bottom: 2rem;
}

.navbar {
    padding: 1rem 0;
    border-bottom: 1px solid #ffffff33;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li a {
    color: #fff;
    text-decoration: none;
    margin-left: 25px;
    font-weight: 700;
    transition: color 0.3s ease;
}

.nav-links li a:hover {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
}

.hero p {
    font-size: 1.5rem;
    color: var(--light-gray);
}

/* 메인 섹션 */
main section {
    padding: 4rem 0;
}

main h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--primary-color);
}

h2 i {
    margin-right: 10px;
}

hr.container {
    border: 0;
    height: 1px;
    background: var(--light-gray);
}

/* 기술 스택 */
.skill-category {
    margin-bottom: 3rem;
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 8px;
    border-left: 5px solid var(--accent-color);
}

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--light-gray);
    padding-bottom: 0.5rem;
}

.skill-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.skill-icons span {
    display: inline-flex;
    align-items: center;
    background-color: #fff;
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 700;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-icons span:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.skill-icons i {
    font-size: 1.5rem;
    margin-right: 10px;
    color: var(--accent-color);
}

/* 프로젝트 */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: #fff;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.project-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.btn-project {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: var(--accent-color);
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    transition: background-color 0.3s ease;
}

.btn-project:hover {
    background-color: var(--primary-color);
}

/* 연락처 */
#contact {
    text-align: center;
    background-color: var(--secondary-color);
}

.email-link {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 푸터 */
footer {
    background-color: var(--primary-color);
    color: #fff;
    text-align: center;
    padding: 1.5rem 0;
}


/* 반응형 디자인 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: var(--primary-color);
        position: absolute;
        top: 60px; /* navbar 높이에 따라 조정 */
        left: 0;
        padding: 1rem 0;
        z-index: 1000;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        text-align: center;
        padding: 1rem 0;
    }

    .nav-links li a {
        margin: 0;
    }

    .hamburger {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    main h2 {
        font-size: 2rem;
    }
}