html {
    scroll-behavior: smooth;
}

section, .border {
    scroll-margin-top: 60px;
}

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

.body {
    background-color: #ffffff;
    color: #1A1A1A;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    font-size: 16px;
}

.title-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 250px; 
    border-bottom: 1px solid #E0E0E0;
    background-color: #fff;
    z-index: 999;
}
.title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -1px;
}

.nav-right {
    display: flex;
    gap: 40px; 
}


.nav-right a.active {
    color: #4A90E2;
    font-weight: 600;
}

.nav-right a {
    text-decoration: none;
    color: inherit;
    font-size:18px;
    font-weight: 600;
    letter-spacing: -0.5px;
    cursor: pointer;
}

.nav-right a:hover {
    opacity: 0.7
}

.title2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
}


.border {
    border-bottom: 1px solid #E0E0E0;
    margin-top: 0;
}


.content-1,
.content-2,
.content-3,
.content-5 {
    max-width: 100%;
    margin: 0;
    padding: 80px 250px;
    text-align: center;
}

.content-1 {
    text-align: left;
    padding-top: 120px;
}

.greeting {
    font-size: 16px;
    font-weight: 500;
    color: #666;
    margin-bottom: 10px;
}

.hero-name {
    font-size: 72px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: -1px;
}

.accent {
    color: #4A90E2;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 400;
    color: #555;
    max-width: 600px;
}


.content-2 p {
    font-size: 16px;
    line-height: 1.8;
    color: #444;
    max-width: 800px;
    margin: 0 auto;
}


.skills-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 20px;
}

.skill-tag {
    background-color: #F0F4F8;
    border: 1px solid #D0D8E0;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #1A1A1A;
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background-color: #E3EAFF;
    border-color: #4A90E2;
    color: #4A90E2;
}


.projects-section {
    position: relative;
    width: 100%;
    padding: 80px 0;
    overflow: visible;
}

#dotGrid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.projects {
    position: relative;
    z-index: 10;
    max-width: 100%;
    margin: 0;
    padding: 0 250px;
    color: #1A1A1A;
}

.projects h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: -0.5px;
}

.project-row {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    overflow-y: visible;
    scroll-behavior: smooth;
    padding-bottom: 10px;
    padding-top: 10px;
    scrollbar-width:none;
}

.project-row::-webkit-scrollbar {
  display: none; /* Chrome, Safari */
}

.project-card {
    min-width: 300px;
    background-color: #F9F9F9;
    border: 1px solid #E0E0E0;
    border-top: 3px solid #E0E0E0;
    border-radius: 8px;
    padding: 24px;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: #4A90E2;
    border-top: 3px solid #4A90E2;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.1);
    transform: translateY(-2px);
}

.project-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #1A1A1A;
}

.project-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tags span {
    background-color: #E3EAFF;
    color: #4A90E2;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}


.content-5 {
    text-align: center;
    padding-bottom: 120px;
}

.content-5 h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
}

.content-5 a {
    display: inline-block;
    margin: 0 15px;
    color: #4A90E2;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
}

.content-5 a:hover {
    border-bottom-color: #4A90E2;
}


h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    padding-bottom: 10px;
}


.project-card {
  flex: 0 0 300px;
  background-color: rgba(245, 245, 245, 0.9);
  border: 2px solid #D1D1D1;
  border-radius: 12px;
  padding: 20px;
  backdrop-filter: blur(4px);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
  border-color: #D1D1D1;
  background-color: rgba(255, 255, 255, 0.95); 
}

.tags span {
    display: inline-block;
    background-color: #EAEAEA;
    color: #1A1A1A;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 6px;
    margin: 4px;
}

#about {
  position: relative;
  overflow: hidden;
}

#about::before,
#about::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

#about::before {
  top: -100px;
  left: -100px;
  background: #cfe2ff;
}

#about::after {
  bottom: -120px;
  right: -120px;
  background: #e3f0ff;
}



#skills {
    background-image: linear-gradient(135deg,#d4d4d4, #ffffff);
    background-size: 200% 200%;
    animation: gradientShift 10s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

#links {
    background: linear-gradient(90deg, #ffffff 0%, #f5f5ff 100%);
}