/* styles.css */

@import url('foundation.css');

html, body {
    width: 100%;
    overflow-x: hidden;  /* 가로 스크롤 방지 */
}

body {
    z-index: -1000;
}

/* 헤더 기본 스타일 (투명 배경) */
header {
    overflow: hidden;
    background-color: transparent; /* 기본적으로 투명 */
    color: var(--color-light); /* 기본 텍스트 색상 */
    position: fixed;
    padding: 0 16px;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

header.scrolled {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    background-color: var(--header-bg-color); /* 스크롤 시 배경색 */
    color: var(--header-text-color); /* 스크롤 시 텍스트 색상 */
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

header h1 {
    font-size: var(--font-size-large);
    margin: 0;
    color: inherit; /* 부모의 색상 상속 */
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: inherit; /* 부모의 색상 상속 */
    font-weight: var(--font-weight-bold);
}

section {
    width: 100%;
}

section h2 {
    font-size: var(--font-size-xlarge);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    right: 16px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: currentColor; /* 현재 텍스트 색상 사용 */
    margin: 4px 0;
    transition: all 0.3s ease;
}

/* 모바일 네비게이션 */
@media (max-width: 768px) {
    nav ul {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: center;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-speed) ease;
    }

    nav ul.active {
        max-height: 300px;
    }

    nav ul li {
        margin: 15px 0;
    }

    .nav-toggle {
        display: flex;
        position: absolute;
    }

    ul.active {
        background-color: rgba(255, 255, 255, 0.5);
        color: var(--color-text)
    }

    ul.active.scrolled {
        background-color: var(--color-background);
    }

    ul.active li {
        width: 100%;
        height: 100%;
    }

    ul.active li a {
        display: block;
        width: 100%;
        height: 100%;
        text-align: center;
    }

}

/* 히어로 섹션 */
.hero {
    height: 100vh;
    background: url('https://c.pxhere.com/photos/d8/12/notebook_laptop_pc_pen_notes_code_programming_cafe-865584.jpg!d') center center/cover no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
}

.hero-content {
    position: relative;
    color: var(--color-light);
    text-align: center;
    z-index: 999;
}

.hero-content h2 {
    color: var(--color-light-grey);
    font-size: var(--font-size-xlarge);
}

.hero-content h1 {
    color: var(--color-light);
    font-size: var(--font-size-xxlarge);
    font-weight: var(--font-weight-black);
    margin-bottom: 30px;
}

.hero-content span {
    position: absolute;
    margin-left: 5px;
    top: 90px;
    color: var(--color-light-grey);
    font-size: var(--font-size-small);
}

.hero-content p {
    margin-bottom: 10px;
}

.hero-content a {
    padding: 12px 30px;
    background: var(--color-primary);
    border-radius: 5px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-light);
    transition: background var(--transition-speed);
}

.hero-content a:hover {
    cursor: pointer;
    background: var(--color-accent);
}

#cat-server {
    padding: 40px 10%;
    background: var(--color-light);
}

#cat-server h2 {
    text-align: center;
    margin-bottom: 40px;
}

#cat-server .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#cat-server .explanation {
    text-align: center;
}

#cat-server .explanation > h3 {
    font-size: var(--font-size-large);
    color: var(--color-text);
    margin-bottom: 10px;
}

#cat-server h3 > span {
    color: var(--color-primary)
}

#cat-server .explanation > p {
    font-size: var(--font-size-base);
    color: var(--color-text-medium-grey);
    font-weight: var(--font-weight-bold);
}

#cat-server .logo {
    margin-top: 10px;
    width: 100%;
    display: flex;
    justify-content: center;
}

#cat-server .project-item {
    width: 100%;
    max-width: 450px;
}


/* 소개 섹션 */
#about {
    padding: 40px 10%;
}

#about h2 {
    text-align: center;
    margin-bottom: 40px;
}

#about .about-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

#about .about-image {
    flex: 1;
    max-width: 250px;
    margin-right: 20px;
}

#about .about-image img {
    width: 250px;
    border-radius: 50%;
}

#about .about-row {
    display: flex;
    flex-direction: row;
}

#about .about-col {
    display: flex;
    flex-direction: column;
}

#about .about-col > div {
    display: flex;
    flex-direction: row;
}

#about .about-col img {
    width: 36px;
    height: 36px;
    margin-right: 18px;
    margin-top: 8px;
}

#about .about-text {
    display: flex;
    flex-direction: column;
    min-width: 250px;
    margin-bottom: 30px;
}

#about .about-text-title {
    font-weight: var(--font-weight-bold);
    margin-bottom: 6px;
}

#about .about-text-text {
    font-size: var(--font-size-small);
}

@media (max-width: 1149px) {
    #about .about-content {
        justify-content: center;
    }
    #about .about-row {
        margin-top: 16px;
        justify-content: space-between;
    }
    #about .about-col {
        margin-left: 40px;
    }
    #about .about-text {
        min-width: 0;
    }
}

/* 기술 스택 섹션 */
#skills {
    padding: 60px 0;
    background: var(--color-light);
}

#skills h2 {
    text-align: center;
    margin-bottom: 40px;
    font-weight: var(--font-weight-black);
}

#skills .container {
    padding: 0 40px;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(7, 2fr); /* 3개의 컬럼 생성 */
    grid-auto-rows: auto; /* 행 높이 자동 조정 */
    gap: 20px; /* 아이템 간 간격 */
}

/* 첫 번째 행에 2개의 아이템을 배치하기 위해 첫 번째 아이템을 2 컬럼 span */
.skills-grid :nth-child(1) {
    grid-column: span 2; /* 첫 번째 아이템은 2개의 컬럼을 차지 */
}

.skills-grid :nth-child(2) {
    grid-column: span 3; /* 두 번째 아이템은 3번째 컬럼에 위치 */
}

.skills-grid :nth-child(3) {
    grid-column: span 2; /* 세 번째 아이템은 첫 번째 컬럼에 위치 */
}

.skills-grid :nth-child(4) {
    grid-column: span 4; /* 네 번째 아이템은 두 번째 컬럼에 위치 */
}

.skills-grid :nth-child(5) {
    grid-column: span 3; /* 다섯 번째 아이템은 세 번째 컬럼에 위치 */
}

.skill-category {
    margin-bottom: 40px;
    padding: 30px 20px;
    border-radius: 5px;
    background-color: var(--color-background);
}

.skill-category h3 {
    text-align: center;
    margin-bottom: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
}

.skills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100px;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    position: relative;
}

.skill-item i,
.skill-item svg,
.skill-item img {
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
    transition: transform var(--transition-speed);
}

.skill-item i::before {
    font-size: 60px;
}

.skill-item p {
    text-align: center;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
}

.skill-item:hover i,
.skill-item:hover img {
    transform: scale(1.2);
}

/* 툴팁 스타일 */
.skill-item p {
    visibility: hidden;
    opacity: 0;
    width: max-content;
    background-color: var(--color-dark);
    color: var(--color-light);
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    transition: opacity var(--transition-speed);
    white-space: nowrap;
    z-index: 1;
}

/*.skill-item::after {*/
/*    content: '';*/
/*    position: absolute;*/
/*    top: 100%;*/
/*    left: 50%;*/
/*    transform: translateX(-50%);*/
/*    border-width: 5px;*/
/*    border-style: solid;*/
/*    border-color: var(--color-dark) transparent transparent transparent;*/
/*}*/

.skill-item:hover p {
    visibility: visible;
    opacity: 1;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .skill-item {
        width: 80px;
    }

    .skill-item i,
    .skill-item svg {
        width: 50px;
        height: 50px;
    }

    .skill-category h3 {
        font-size: var(--font-size-base);
    }

    #skills h2 {
        font-size: var(--font-size-large);
    }
}


/* 프로젝트 섹션 */
#projects {
    padding: 40px 5%;
}

#projects h2 {
    text-align: center;
    margin-bottom: 40px;
}

#projects .container {
    padding: 0 40px;
}

.project-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.project-item {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--color-background);
    border: var(--border-normal);
    border-radius: 10px;
    width: 40%;
    margin: 15px;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    cursor: pointer;
}

.project-item::after {
    content: ''; /* 표시할 텍스트 */
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    min-height: 200px;
    transform: translate(-50%, -50%) scale(0.8);
    background-color: rgba(0, 0, 0, 0.1); /* 반투명 검은색 배경 */
    color: #fff; /* 흰색 텍스트 */
    padding: 10px 20px;
    border-radius: 5px;
    opacity: 0; /* 초기 상태는 숨김 */
    transition: all 0.3s ease; /* 부드러운 전환 효과 */
    pointer-events: none; /* 오버레이가 마우스 이벤트를 방해하지 않도록 설정 */
}

.project-item:hover::after {
    opacity: 1; /* 호버 시 보이도록 설정 */
    transform: translate(-50%, -50%) scale(1); /* 확대 애니메이션 */
}


.project-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.project-item img {
    margin: auto;
    max-height: 200px;
    max-width: 100%;
    padding: 16px;
    object-fit: cover;
    transition: transform var(--transition-speed) ease;
}

.project-item .project-info {
    border-top: var(--border-normal);
    padding: 15px 20px;
}

.project-item .project-info h3 {
    margin-bottom: 10px;
}

.project-item .project-info p {
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-medium-grey);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .project-list {
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .project-item {
        width: 80%;
        min-height: 300px;
    }
}


/* 연락처 섹션 */
#contact {
    background: var(--color-light);
    padding: 40px 0;
}

#contact h2 {
    text-align: center;
    margin-bottom: 40px;
}

#contact .contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#contact .contact-info p {
    margin: 10px 0;
    font-size: var(--font-size-base);
}

/* 모달 스타일 */
/* 모달 스타일 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

/* 모달 내부 */
.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    background-color: white;
    border-radius: 10px;
    overflow: auto;
}

.modal img {
    width: 60px;
    height: 60px;
    opacity: 0.2;
}

.modal img:hover {
    opacity: 0.6;
    cursor: pointer;
}

.pdf-btn {
    position: absolute;
    width: 50%;
    height: 100%;
    padding: 5px;
    display: flex;
    align-items: center;
    cursor: pointer;
}

#pdf-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 20px;
    cursor: pointer;
    z-index: 999;
}

#pdf-close > img {
    height: 20px;
    width: 20px;
}

#pdf-next {
    top: 0;
    right: 0;
    justify-content: end;
}

#pdf-prev {
    top:0;
    right: 50%;
    justify-content: start;
}

.link-container {
    position: absolute;
    top: 10%;
    right: 3%;
}

.link-container img {
    opacity: 1;
}

.link-container > div {
    width: 75px;
    height: 75px;
    border-radius: 50%;
    background-color: var(--color-light);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* PDF Canvas */
canvas {
    width: 100%;
    height: 100%;
}


/* 푸터 스타일 */
footer {
    background: var(--color-dark);
    color: var(--color-light);
    padding: 20px 0;
    text-align: center;
}

footer p {
    margin: 0;
    font-size: var(--font-size-small);
}