/* ===========================
   RESET & BASE
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Kanagawa palette */
  --bg:        #1f1f28;
  --bg-dim:    #16161d;
  --bg-m1:     #1a1a22;
  --bg-p1:     #2a2a37;
  --bg-p2:     #223249;
  --surface:   #363646;
  --border:    rgba(84,84,109,0.45);

  --fg:        #dcd7ba;
  --fg-dim:    #727169;
  --fg-muted:  #938aa9;

  --blue:      #7e9cd8;
  --blue-dim:  #223249;
  --cyan:      #7fb4ca;
  --green:     #98bb6c;
  --yellow:    #e6c384;
  --orange:    #ffa066;
  --red:       #e46876;
  --pink:      #d27e99;
  --violet:    #957fb8;
  --teal:      #6a9589;

  --accent:    #7e9cd8;
  --accent2:   #957fb8;

  --font-display: 'Space Grotesk', sans-serif;
  --font-mono:    'Space Mono', monospace;
  --nav-h: 64px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===========================
   NAV
=========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  background: rgba(31,31,40,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}

.nav-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links li a {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--fg-muted);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--blue) !important;
  color: var(--bg) !important;
  padding: 0.45rem 1.1rem;
  border-radius: 100px;
  font-size: 0.8rem !important;
  font-weight: 700 !important;
  transition: background 0.2s, transform 0.15s !important;
}

.nav-cta:hover {
  background: var(--cyan) !important;
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   MOBILE MENU
=========================== */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0; bottom: 0;
  background: var(--bg-dim);
  z-index: 99;
  padding: 2rem 2.5rem;
  flex-direction: column;
  justify-content: center;
}

.mobile-menu.open { display: flex; }

.mobile-menu ul { display: flex; flex-direction: column; gap: 0; }

.mobile-link {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
  display: block;
  transition: color 0.2s;
}

.mobile-link:hover { color: var(--blue); }

/* ===========================
   HERO — centered
=========================== */
.hero {
  min-height: 100svh;
  padding-top: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-direction: column;
  position: relative;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(126,156,216,0.08) 0%, transparent 70%),
    var(--bg);
}

/* subtle grid lines */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  pointer-events: none;
}

.hero-center {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem 1.5rem;
}

.hero-photo-wrap {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--blue);
  box-shadow: 0 0 0 6px rgba(126,156,216,0.15);
  margin-bottom: 0.5rem;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(152,187,108,0.1);
  border: 1px solid rgba(152,187,108,0.25);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.65); }
}

.hero-name {
  font-size: clamp(3.5rem, 11vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.05em;
}

.line-solid { color: var(--fg); }

.line-outline {
  -webkit-text-stroke: 2px var(--blue);
  color: transparent;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 360px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
}

/* ===========================
   BUTTONS
=========================== */
.btn-primary {
  display: inline-block;
  background: var(--blue);
  color: var(--bg);
  padding: 0.7rem 1.6rem;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: var(--cyan);
  transform: translateY(-2px);
}

.btn-primary.large {
  font-size: 1.05rem;
  padding: 0.9rem 2rem;
}

.btn-ghost {
  display: inline-block;
  color: var(--fg);
  padding: 0.7rem 1.6rem;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1.5px solid var(--border);
  transition: border-color 0.2s, color 0.2s, transform 0.15s;
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
}

/* ===========================
   SECTIONS (shared)
=========================== */
.section {
  padding: 6rem 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 3rem;
}

/* ===========================
   ABOUT
=========================== */
.about {
  border-top: 1px solid var(--border);
  max-width: 100%;
  padding-left: max(2.5rem, calc((100% - 1200px) / 2));
  padding-right: max(2.5rem, calc((100% - 1200px) / 2));
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-text h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--fg);
}

.about-text h2 em {
  font-style: normal;
  color: var(--blue);
}

.about-text p {
  color: var(--fg-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
  font-size: 0.975rem;
}

.about-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  align-items: center;
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--fg-dim);
  font-family: var(--font-mono);
}

.about-contact a {
  color: var(--blue);
  border-bottom: 1px solid rgba(126,156,216,0.3);
  transition: color 0.2s;
}

.about-contact a:hover { color: var(--cyan); }
.dot { color: var(--fg-dim); }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--bg-p1);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem 1.5rem;
  transition: border-color 0.2s;
}

.stat-card:hover { border-color: var(--blue); }

.stat-num {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.5rem;
  color: var(--yellow);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* ===========================
   SKILLS
=========================== */
.skills-section {
  border-top: 1px solid var(--border);
  background: var(--bg-dim);
  max-width: 100%;
  padding-left: max(2.5rem, calc((100% - 1200px) / 2));
  padding-right: max(2.5rem, calc((100% - 1200px) / 2));
}

.skills-section .section-label { color: var(--fg-dim); }
.skills-section .section-title { color: var(--fg); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 3rem;
}

.skill-block {
  padding: 2rem 1.75rem;
  background: var(--bg-dim);
  transition: background 0.2s;
}

.skill-block:hover { background: var(--bg-m1); }

.skill-icon {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  line-height: 1;
  color: var(--blue);
}

.skill-block h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
  color: var(--fg);
}

.skill-block ul { display: flex; flex-direction: column; gap: 0.3rem; }

.skill-block ul li {
  font-size: 0.82rem;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

.lang-bar {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.lang-bar-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-dim);
  white-space: nowrap;
}

.lang-pills { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.lang-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-p1);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.4rem 0.9rem;
}

.lang-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg);
}

.lang-level {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.1rem 0.45rem;
  border-radius: 100px;
}

.lang-level.fluent    { background: rgba(126,156,216,0.2); color: var(--blue); }
.lang-level.working   { background: rgba(230,195,132,0.15); color: var(--yellow); }
.lang-level.understanding { background: rgba(149,127,184,0.15); color: var(--violet); }

/* ===========================
   EXPERIENCE / TIMELINE
=========================== */
.experience-section {
  border-top: 1px solid var(--border);
  max-width: 100%;
  padding-left: max(2.5rem, calc((100% - 1200px) / 2));
  padding-right: max(2.5rem, calc((100% - 1200px) / 2));
}

.timeline {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--border);
  padding-left: 2rem;
  margin-left: 1rem;
}

.timeline-item {
  position: relative;
  padding: 0 0 2.5rem 0;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}

.timeline-item.visible { opacity: 1; transform: translateY(0); }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.55rem;
  top: 0.35rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border);
}

.timeline-item.current::before {
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(126,156,216,0.2);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 0.5rem;
}

.timeline-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}

.timeline-tag.work   { background: rgba(126,156,216,0.15); color: var(--blue); }
.timeline-tag.edu    { background: rgba(152,187,108,0.15); color: var(--green); }
.timeline-tag.course { background: rgba(230,195,132,0.15); color: var(--yellow); }

.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.3rem;
  color: var(--fg);
}

.timeline-org {
  font-size: 0.82rem;
  color: var(--fg-dim);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.timeline-content p:not(.timeline-org) {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 540px;
}

/* ===========================
   EXTRACURRICULARS
=========================== */
.extras-section {
  border-top: 1px solid var(--border);
  background: var(--bg-dim);
  max-width: 100%;
  padding-left: max(2.5rem, calc((100% - 1200px) / 2));
  padding-right: max(2.5rem, calc((100% - 1200px) / 2));
}

.extras-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.extra-card {
  background: var(--bg-dim);
  padding: 1.75rem;
  transition: background 0.2s;
  cursor: default;
}

.extra-card:hover { background: var(--bg-p1); }

.extra-year {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 0.6rem;
}

.extra-card h3 {
  font-size: 0.975rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.extra-card p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ===========================
   CTA
=========================== */
.cta-section {
  border-top: 1px solid var(--border);
  text-align: center;
  max-width: 100%;
  padding: 8rem 2.5rem;
  background:
    radial-gradient(ellipse 70% 60% at 50% 100%, rgba(149,127,184,0.1) 0%, transparent 70%),
    var(--bg);
}

.cta-inner { max-width: 700px; margin: 0 auto; }

.cta-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 1.5rem;
}

.cta-heading {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 2.5rem;
  color: var(--fg);
}

.cta-phone {
  margin-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--fg-dim);
  font-family: var(--font-mono);
}

.cta-phone a {
  color: var(--fg-muted);
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}

.cta-phone a:hover { color: var(--blue); }

/* ===========================
   FOOTER
=========================== */
.footer {
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
  background: var(--bg-dim);
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  :root { --nav-h: 56px; }

  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero-name { font-size: clamp(3rem, 16vw, 6rem); }
  .section { padding: 4rem 1.5rem; }
  .about, .skills-section, .experience-section, .extras-section {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .skills-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .extras-grid { grid-template-columns: 1fr; }
  .lang-bar { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .footer { flex-direction: column; gap: 0.5rem; text-align: center; }
  .nav { padding: 0 1.5rem; }
  .cta-section { padding: 5rem 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}