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

:root {
  --bg: #0a0a12;
  --bg-surface: #0d0d18;
  --surface: #111120;
  --surface-hover: #1a1a2e;
  --text: #e0e0e8;
  --text-muted: #9494a8;
  --cyan: #00f0ff;
  --magenta: #ff2d7b;
  --cyan-dim: rgba(0, 240, 255, 0.15);
  --magenta-dim: rgba(255, 45, 123, 0.1);
  --border: #252538;
  --border-glow: rgba(0, 240, 255, 0.25);
  --font-heading: "JetBrains Mono", monospace;
  --font-body: "Noto Sans JP", sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 59px, rgba(30, 30, 48, 0.4) 59px, rgba(30, 30, 48, 0.4) 60px),
    repeating-linear-gradient(90deg, transparent, transparent 59px, rgba(30, 30, 48, 0.4) 59px, rgba(30, 30, 48, 0.4) 60px);
  background-size: 60px 60px;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes glitch {
  0%, 100% { text-shadow: 0 0 40px rgba(0, 240, 255, 0.3), 0 0 80px rgba(0, 240, 255, 0.1); }
  20% { text-shadow: -2px 0 var(--magenta), 2px 0 var(--cyan), 0 0 40px rgba(0, 240, 255, 0.3); }
  40% { text-shadow: 2px 0 var(--magenta), -2px 0 var(--cyan), 0 0 40px rgba(0, 240, 255, 0.3); }
  60% { text-shadow: 0 0 40px rgba(0, 240, 255, 0.3), 0 0 80px rgba(0, 240, 255, 0.1); }
}

@keyframes scanline {
  0% { top: -100%; }
  100% { top: 100%; }
}

@keyframes scrollPulse {
  0%, 100% { height: 2rem; opacity: 0.3; }
  50% { height: 3.5rem; opacity: 0.8; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 12px rgba(0, 240, 255, 0.08);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 3rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  width: 100%;
}

.nav-links a:first-child {
  margin-right: auto;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  transition: color 0.3s, text-shadow 0.3s;
}

.nav-links a:hover {
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 2rem;
  flex-shrink: 0;
}

.lang-btn {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.6rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s;
}

.lang-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.lang-btn-active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-dim);
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.4);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.2);
}

.lang-sep {
  font-family: var(--font-heading);
  font-size: 0.6rem;
  color: var(--text-muted);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 3rem;
}

.section {
  padding: 8rem 0;
  position: relative;
  background-image: linear-gradient(to bottom, rgba(10, 10, 18, 0.92), rgba(10, 10, 18, 0.92));
}

.section:nth-child(even) {
  background: var(--bg-surface);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 4rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}

.section-num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  text-shadow: 0 0 20px rgba(0, 240, 255, 0.6), 0 0 40px rgba(0, 240, 255, 0.2);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text);
}

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 3rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-scanline {
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    transparent 49%,
    rgba(0, 240, 255, 0.03) 50%,
    transparent 51%,
    transparent 100%
  );
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 1;
  animation: scanline 8s linear infinite;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 2;
  animation: fadeInUp 0.8s ease-out;
}

.hero-top {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  align-items: center;
}

.status {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: #00ff88;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #00ff88;
  border-radius: 50%;
  box-shadow: 0 0 8px #00ff88;
  animation: pulse 2s ease-in-out infinite;
}

.hero-label {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--cyan);
  text-transform: uppercase;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-glow);
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.3);
}

.hero-profile {
  display: flex;
  align-items: center;
  gap: 14rem;
  margin-bottom: 3rem;
}

.hero-profile-text {
}

.hero-avatar {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 2px solid var(--border);
  flex-shrink: 0;
}

.hero-name {
}

.hero-name-jp {
  display: block;
  font-family: var(--font-body);
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  animation: glitch 5s ease-in-out infinite;
}

.hero-name-en {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.hero-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

.hero-quote {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  line-height: 1.3;
  color: var(--text);
}

.quote-mark {
  color: var(--magenta);
  text-shadow: 0 0 12px rgba(255, 45, 123, 0.6);
}

.hero-info p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 2rem;
}

.hero-links {
  display: flex;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.65rem 1.5rem;
  border: 1px solid var(--border-glow);
  color: var(--cyan);
  transition: all 0.3s;
  background: transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.1), transparent);
  transition: left 0.5s;
}

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

.btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.3), inset 0 0 12px rgba(0, 240, 255, 0.05);
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.5);
}

.btn-accent {
  background: var(--magenta);
  border-color: var(--magenta);
  color: #fff;
}

.btn-accent::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
}

.btn-accent:hover {
  background: #e0205f;
  border-color: #e0205f;
  color: #fff;
  box-shadow: 0 0 20px rgba(255, 45, 123, 0.4);
  text-shadow: none;
}

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  left: 3rem;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-rl;
  z-index: 2;
}

.hero-scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 3rem;
  background: var(--cyan);
  opacity: 0.4;
  margin-top: 0.75rem;
  margin-left: auto;
  margin-right: auto;
  animation: scrollPulse 2s ease-in-out infinite;
}

.link {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 240, 255, 0.3);
  transition: border-color 0.3s, text-shadow 0.3s;
}

.link:hover {
  border-bottom-color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.about-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 3rem;
}

.about-card {
  padding: 2.5rem 2rem;
  border: 1px solid var(--border);
  background: var(--surface);
  position: relative;
  margin-bottom: 1.5rem;
}

.about-card::before {
  content: attr(data-label);
  display: block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--cyan);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.about-card ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-card li {
  font-size: 0.92rem;
  color: var(--text-muted);
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.9;
}

.about-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  box-shadow: 0 0 6px rgba(0, 240, 255, 0.6);
}

.about-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.about-side .about-card {
  padding: 2rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.skill-group {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.skill-group h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
  color: var(--magenta);
  text-shadow: 0 0 10px rgba(255, 45, 123, 0.4);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border-glow);
  color: var(--cyan);
  letter-spacing: 0.03em;
  transition: all 0.3s;
  background: rgba(0, 240, 255, 0.05);
  text-shadow: 0 0 4px rgba(0, 240, 255, 0.3);
}

.tag:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.3), 0 0 24px rgba(0, 240, 255, 0.1);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
  background: rgba(0, 240, 255, 0.1);
}

.tag-sm {
  font-family: var(--font-heading);
  font-size: 0.6rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.experience-intro {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 700px;
  margin-bottom: 4rem;
  line-height: 2;
}

.timeline {
  position: relative;
  padding-left: 5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), rgba(0, 240, 255, 0.1));
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
}

.exp-card {
  position: relative;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.exp-card:first-child {
  border-top: none;
}

.timeline-node {
  position: absolute;
  left: -5rem;
  top: 2.5rem;
  width: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-node::after {
  content: "";
  position: absolute;
  left: -9px;
  width: 10px;
  height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.6), 0 0 20px rgba(0, 240, 255, 0.3);
}

.exp-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  text-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
}

.exp-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.5;
  color: #fff;
}

.exp-content p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 0.5rem;
}

.exp-note {
  font-size: 0.88rem;
  padding: 1.25rem 1.5rem;
  background: var(--cyan-dim);
  border-left: 2px solid var(--cyan);
  color: var(--text-muted);
  margin-top: 1rem;
  line-height: 1.9;
}

.exp-note ul {
  margin-top: 0.5rem;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.exp-note li {
  position: relative;
  padding-left: 1rem;
}

.exp-note li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--cyan);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--surface);
  padding: 2rem;
  border: 1px solid var(--border);
  transition: all 0.3s;
  position: relative;
}

.project-card::before,
.project-card::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--cyan);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.project-card::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid;
  border-right: 2px solid;
}

.project-card:hover::before,
.project-card:hover::after {
  opacity: 1;
}

.project-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
  transform: translateY(-2px);
}

.project-card-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(255, 45, 123, 0.05) 100%);
  border-color: var(--cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.1);
}

.project-card-featured::before,
.project-card-featured::after {
  opacity: 1;
}

.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: #00ff88;
  margin-bottom: 0.75rem;
}

.badge-live-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #00ff88;
  border-radius: 50%;
  box-shadow: 0 0 6px #00ff88;
  animation: pulse 2s ease-in-out infinite;
}

.project-card-featured .project-role {
  color: var(--text-muted);
}

.project-card-featured p {
  color: var(--text-muted);
}

.project-card-featured .tag-sm {
  border-color: var(--border-glow);
  color: var(--cyan);
}

.project-card-featured .link {
  color: var(--cyan);
  border-bottom-color: rgba(0, 240, 255, 0.4);
}

.project-card-featured h3 {
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.project-img {
  width: 100%;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border);
}

.project-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  line-height: 1.5;
}

.project-role {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.project-card > p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.project-card .skill-tags {
  gap: 0.35rem;
}

.contact-inner {
  max-width: 600px;
}

.contact-lead {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 1rem;
  line-height: 1.4;
  color: var(--cyan);
  text-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
}

.contact-lead::after {
  content: "█";
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}

.contact-inner > p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  line-height: 1.9;
}

.contact-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  background: var(--bg);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  transition: color 0.3s, text-shadow 0.3s;
}

.footer-links a:hover {
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

@media (max-width: 900px) {
  .nav { padding: 0 1.5rem; }
  .container { padding: 0 1.5rem; }
  .hero { padding: 8rem 1.5rem 4rem; }
  .hero-scroll { left: 1.5rem; }

  .hero-profile {
    gap: 4rem;
  }

  .hero-avatar {
    width: 200px;
    height: 200px;
  }

  .hero-bottom {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

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

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-card-featured {
    grid-column: 1 / -1;
  }

  .section { padding: 5rem 0; }

  .timeline {
    padding-left: 4rem;
  }

  .timeline-node {
    left: -4rem;
    width: 3rem;
  }

  .exp-num { font-size: 1.2rem; }
}

@media (max-width: 600px) {
  .nav { padding: 0 1rem; }
  .container { padding: 0 1rem; }
  .hero { padding: 6rem 1rem 3rem; }

  .nav-links {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  .nav-links a { font-size: 0.65rem; }
  .lang-switcher { margin-left: 1rem; }

  .hero-profile {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    text-align: center;
  }

  .hero-avatar {
    width: 160px;
    height: 160px;
  }

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

  .hero-top {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }

  .hero-name-jp { font-size: 2.8rem; }
  .hero-quote { font-size: 1.8rem; }

  .section-num { font-size: 2rem; }
  .section-title { font-size: 1.2rem; }

  .section-header { gap: 1rem; margin-bottom: 3rem; }

  .timeline {
    padding-left: 0;
  }

  .timeline::before {
    display: none;
  }

  .timeline-node {
    position: static;
    width: auto;
    margin-bottom: 0.5rem;
  }

  .timeline-node::after {
    display: none;
  }

  .exp-num { font-size: 1.2rem; }

  .hero-scroll { display: none; }

  .footer-inner {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .contact-links {
    flex-direction: column;
  }

  .contact-lead { font-size: 1.2rem; }
}