/* 전역 스타일 */
:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --background-color: #000000;
    --text-color: #ffffff;
    --border-color: rgba(255, 255, 255, 0.1);
    --hover-color: #1a1a1a;
    --accent-color: #4A7AFF;
    --gradient-start: #000000;
    --gradient-end: #1a1a1a;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.05);
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

@keyframes glow {
    0% { box-shadow: 0 0 5px rgba(74, 122, 255, 0.2); }
    50% { box-shadow: 0 0 20px rgba(74, 122, 255, 0.4); }
    100% { box-shadow: 0 0 5px rgba(74, 122, 255, 0.2); }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none;
}

.cursor {
    width: 20px;
    height: 20px;
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.2s ease;
    transform-origin: center center;
}

.cursor-dot {
    width: 4px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease;
}

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

.section {
    opacity: 0;
    transform: translateY(20px);
}

.section.visible {
    animation: reveal 0.8s ease forwards;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background: linear-gradient(135deg, rgba(74, 122, 255, 0.2) 0%, #000000 100%);
    min-height: 100vh;
    overflow-x: hidden;
    letter-spacing: -0.02em;
}

/* 헤더 스타일 */
.header {
    background: transparent;
    color: white;
    padding: 8rem 2rem 4rem;
    text-align: left;
    position: relative;
    max-width: 1200px;
    margin: 0 auto 4rem;
}

.header h1 {
    font-size: 5rem;
    margin-bottom: 1rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.7), #fff);
    background-size: 1000px 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 8s infinite linear;
}

.subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
    opacity: 0;
    animation: fadeIn 0.8s ease-out 0.2s forwards;
}

.project-subtitle {
    font-size: 1.1rem;
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

/* 메인 컨텐츠 스타일 */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
}

@media (max-width: 768px) {
    .header {
        padding: 6rem 1.5rem 3rem;
    }

    .header h1 {
        font-size: 3.5rem;
    }

    .section {
        padding: 2rem;
        margin-bottom: 2rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    main {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 2.5rem;
    }

    .project-tags {
        gap: 0.5rem;
    }

    .section {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    backdrop-filter: blur(10px);
    animation: glow 3s infinite ease-in-out;
    transition: transform 0.3s ease;
}

.section:hover {
    transform: translateY(-5px);
}

.profile-image {
    animation: float 6s infinite ease-in-out;
}

.project-tag {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

.section {
    background-color: var(--card-bg);
    border-radius: 24px;
    padding: 3rem;
    margin-bottom: 3rem;
    border: 1px solid var(--card-border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.section:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 11, 31, 0.2);
}

.section h2 {
    color: white;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    position: relative;
    display: inline-block;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

.project-details {
    margin-top: 3rem;
    display: grid;
    gap: 2rem;
}

/* 프로필 이미지 스타일 */
.profile-container {
    text-align: center;
    margin-bottom: 3rem;
}

.profile-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.1);
    padding: 4px;
    background-color: rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.profile-image:hover {
    transform: scale(1.05);
}

/* 기본 정보 그리드 */
.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    position: relative;
}

.info-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.info-item:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.info-item strong {
    display: block;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.info-item span, .info-item p, .info-item li {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
    line-height: 1.6;
}

.info-item ul {
    list-style-position: inside;
    margin-top: 0.5rem;
}

.info-item li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.2rem;
}

.info-item li::before {
    content: "•";
    color: var(--accent-color);
    position: absolute;
    left: 0;
    top: 0;
}

.info-item {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.info-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.info-item:hover {
    background-color: var(--card-bg);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border-color: var(--accent-color);
}

.info-item:hover::before {
    opacity: 1;
}

.info-item strong {
    color: var(--accent-color);
    display: block;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.info-item span {
    font-size: 1.1rem;
    font-weight: 500;
}

.info-item ul {
    list-style-type: none;
    margin-left: 0;
    margin-top: 1rem;
}

.info-item ul li {
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    padding-left: 1.5rem;
}

.info-item ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 프로젝트 태그 */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.project-tag {
    background-color: rgba(74, 122, 255, 0.1);
    color: var(--accent-color);
    padding: 0.75rem 1.25rem;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid rgba(74, 122, 255, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.project-tag:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(74, 122, 255, 0.3);
}

/* 연락하기 폼 */
.contact-form {
    background-color: rgba(255, 255, 255, 0.03);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(0, 153, 255, 0.1);
}

.submit-btn {
    background-color: var(--accent-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    background-color: #0088ee;
    box-shadow: 0 4px 12px rgba(0, 153, 255, 0.2);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* 푸터 */
.footer {
    text-align: center;
    padding: 2rem;
    color: rgba(255, 255, 255, 0.5);
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
    background-color: rgba(0, 11, 31, 0.5);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .header h1 {
        font-size: 3rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .section {
        padding: 2rem;
    }

    .section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 2.5rem;
    }

    .section {
        padding: 1.5rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}
body {
    background: linear-gradient(to bottom, black, #000038);
}