:root {
  --paper: #efe4c9;
  --paper-deep: #e3d3ac;
  --paper-light: #f7efdb;
  --ink: #241d17;
  --ink-soft: #55483a;
  --ink-faint: rgba(36, 29, 23, 0.18);
  --pink: #c85c86;
  --pink-deep: #a63b66;
  --pink-soft: rgba(200, 92, 134, 0.14);
  --seal: #9c3232;
  --font-display: 'Yuji Syuku', 'Shippori Mincho', 'Noto Serif JP', serif;
  --font-body: 'Shippori Mincho', 'Noto Serif JP', 'Georgia', serif;
  --panel-w: min(620px, 44vw);
  --edge-left: max(6vw, 130px);
  --edge-right: 6vw;
  --panel-bg:
    linear-gradient(rgba(250, 244, 230, 0.62), rgba(250, 244, 230, 0.62)),
    url('assets/paper.webp') center / 520px;
}

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

html, body {
  scroll-behavior: smooth;
  width: 100%;
  font-family: var(--font-body);
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper) url('assets/paper.webp') center / 640px;
}

/* ===== LOADING SCREEN ===== */
#loader {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  background: var(--paper) url('assets/paper.webp') center / 640px;
  transition: opacity 0.9s ease, visibility 0.9s ease;
}

#loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-kanji {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 7rem);
  color: var(--ink);
  letter-spacing: 0.1em;
  animation: inkPulse 2.4s ease-in-out infinite;
}

@keyframes inkPulse {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}

.loader-label {
  font-family: var(--font-display);
  color: var(--pink-deep);
  letter-spacing: 0.08em;
}

.loader-bar {
  width: min(260px, 60vw);
  height: 3px;
  background: var(--ink-faint);
  overflow: hidden;
}

.loader-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--seal), var(--pink));
  transition: width 0.3s ease;
}

.loader-skip {
  margin-top: 0.8rem;
  background: none;
  border: 1px solid var(--ink-faint);
  color: var(--ink-soft);
  font-family: var(--font-body);
  padding: 0.5rem 1.2rem;
  border-radius: 20px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.loader-skip.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ===== BACKDROP ===== */
/* The painting lives in screen space rather than on a 3D surface so it
   displays near its native resolution; three-scene.js pans and tilts it with
   the camera, which is how distant scenery moves anyway. */
#backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  --strip-h: 125vh;
}

.backdrop-rot {
  position: absolute;
  inset: -20%;
  transform-origin: 50% 50%;
  will-change: transform;
}

.backdrop-strip {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  height: var(--strip-h);
  will-change: transform;
}

.backdrop-strip span {
  flex: none;
  height: 100%;
  /* 2px overlap hides sub-pixel gaps between tiles; the advance stays exact. */
  width: calc(var(--strip-h) * 2.9985 + 2px);
  margin-right: -2px;
  background: url('assets/mountains.webp') center / 100% 100% no-repeat;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 7%, #000 86%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0, #000 7%, #000 86%, transparent 100%);
}

.backdrop-strip .flip {
  transform: scaleX(-1);
}

/* ===== 3D SAMURAI SCENE ===== */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  /* Deliberately NOT a negative z-index: a fixed WebGL canvas behind
     content on a tall/scrollable page can fail to composite under some
     software renderers when given a negative stack level. Zero, combined
     with this element being first in the DOM, keeps it behind everything
     that follows without that risk. */
  z-index: 0;
  display: block;
  opacity: 0;
  transition: opacity 1.4s ease;
}

#bg-canvas.is-ready {
  opacity: 1;
}

.video-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(90, 60, 35, 0.18) 100%);
  pointer-events: none;
}

/* Frames the hero only; absolute so it scrolls away before the close-ups. */
.sakura-branch {
  position: absolute;
  top: 0;
  right: -40px;
  width: min(26vw, 360px);
  z-index: 1;
  pointer-events: none;
  opacity: 0.92;
  transform: scaleX(-1);
  transform-origin: 50% 10%;
  animation: branchSway 7s ease-in-out infinite;
}

/* Mirrored so the painting's cut-off trunk sits off-screen to the right. */
@keyframes branchSway {
  0%, 100% { transform: scaleX(-1) rotate(-1.2deg); }
  50% { transform: scaleX(-1) rotate(1.4deg); }
}

/* ===== FIXED UI ===== */
.navbar, .logo, .social {
  position: fixed;
  z-index: 1000;
  border: 1px solid var(--ink-faint);
  background: rgba(247, 239, 219, 0.9);
  box-shadow: 0 8px 28px rgba(36, 29, 23, 0.16);
}

.navbar {
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 32px;
  animation: slideDown 1s ease-out;
}

@keyframes slideDown {
  from { transform: translateX(-50%) translateY(-100px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

.navbar a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  margin: 0 1.2rem;
  padding: 0.7rem 1.1rem;
  border-radius: 20px;
  transition: all 0.3s ease;
  font-family: var(--font-display);
}

.navbar a:hover, .navbar a.active {
  background: var(--pink-soft);
  color: var(--pink-deep);
}

.logo {
  top: 20px;
  left: 20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  cursor: pointer;
}

.logo-mark { width: 100%; height: 100%; overflow: visible; }
.logo-ring { fill: none; stroke: var(--ink-faint); stroke-width: 2; }
.logo-blade { fill: var(--ink); }
.logo-blade-edge { fill: var(--pink); }
.logo-guard { fill: var(--seal); }
.logo-hilt { fill: var(--ink-soft); }

.social {
  top: 50%;
  left: 30px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 15px;
  border-radius: 25px;
}

.social-icon {
  width: 40px;
  height: 40px;
  margin: 8px 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pink-soft);
  color: var(--ink);
  font-size: 18px;
  transition: all 0.3s ease;
  text-decoration: none;
}

.social-icon:hover {
  background: var(--seal);
  color: var(--paper-light);
  transform: scale(1.12);
}

.social-line {
  width: 2px;
  height: 36px;
  background: linear-gradient(to bottom, transparent, var(--ink-faint), transparent);
  margin: 8px 0;
}

/* ===== HERO ===== */
/* The hero panel sits on the left; the full-body samurai fills the right. */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 110px 0 40px var(--edge-left);
  margin-bottom: 40vh;
  position: relative;
  z-index: 10;
}

.hero-content {
  width: var(--panel-w);
  background: var(--panel-bg);
  padding: 2.6rem 2.4rem;
  border: 1px solid var(--ink-faint);
  box-shadow: 0 14px 40px rgba(36, 29, 23, 0.18);
  position: relative;
  animation: fadeInUp 1.4s ease-out;
}

.hero-content::before,
.section::before {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(156, 50, 50, 0.22);
  pointer-events: none;
}

.hero-eyebrow {
  font-family: var(--font-display);
  color: var(--seal);
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  line-height: 1.1;
  margin-bottom: 0.9rem;
}

.hero .subtitle {
  font-size: 1.25rem;
  color: var(--pink-deep);
  margin-bottom: 1.4rem;
  font-weight: 600;
}

.typing-text {
  display: inline-block;
  font-size: 1.1rem;
  color: var(--ink-soft);
  border-right: 2px solid var(--seal);
  padding-right: 5px;
  animation: blink 1s infinite;
  min-height: 1.5em;
}

@keyframes blink {
  0%, 50% { border-color: transparent; }
  51%, 100% { border-color: var(--seal); }
}

.cta-buttons {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.cta-btn {
  padding: 12px 22px;
  border: 2px solid var(--ink);
  background: var(--paper-light);
  color: var(--ink);
  text-decoration: none;
  border-radius: 30px;
  font-weight: 600;
  font-family: var(--font-display);
  transition: all 0.3s ease;
}

.cta-btn:hover {
  background: var(--seal);
  border-color: var(--seal);
  color: var(--paper-light);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(156, 50, 50, 0.3);
}

.hero-quote {
  margin-top: 1.6rem;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.scroll-cue {
  margin-top: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--pink-deep);
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.scroll-cue i {
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ===== SECTION PANELS ===== */
/* Each section is a paper panel on one side; the drone shot of that
   section's part of the samurai fills the other side. The large bottom
   margin is the open sky the camera flies through between shots. */
.section {
  position: relative;
  z-index: 10;
  width: var(--panel-w);
  padding: 3rem 2.4rem;
  margin-bottom: 55vh;
  background: var(--panel-bg);
  border: 1px solid var(--ink-faint);
  box-shadow: 0 14px 40px rgba(36, 29, 23, 0.16);
}

.section.panel-left { margin-left: var(--edge-left); }
.section.panel-right { margin-left: auto; margin-right: var(--edge-right); }
.section:last-of-type { margin-bottom: 15vh; }

.section h2 {
  font-family: var(--font-display);
  font-size: 2.3rem;
  margin-bottom: 2.4rem;
  position: relative;
}

.section h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--seal), var(--pink));
}

.card {
  background: rgba(255, 250, 238, 0.7);
  border: 1px solid var(--ink-faint);
}

/* ===== ABOUT ===== */
.about-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.about-text {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.about-text p { margin-bottom: 1.2rem; }
.about-text strong { color: var(--pink-deep); }

.contact-details {
  background: rgba(255, 250, 238, 0.7);
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--ink-faint);
  margin-top: 1.4rem;
  line-height: 1.9;
}

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

.stat-card {
  background: rgba(255, 250, 238, 0.75);
  padding: 1.4rem 1rem;
  text-align: center;
  border: 1px solid var(--ink-faint);
  border-top: 3px solid var(--seal);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: var(--pink-deep);
  display: block;
}

.stat-label {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin-top: 0.4rem;
}

/* ===== EXPERIENCE ===== */
.experience-grid {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.experience-card {
  background: rgba(255, 250, 238, 0.75);
  padding: 1.6rem;
  border: 1px solid var(--ink-faint);
  border-left: 4px solid var(--seal);
}

.experience-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 1rem;
  margin-bottom: 0.9rem;
}

.experience-role {
  color: var(--pink-deep);
  font-size: 1.2rem;
  font-family: var(--font-display);
  width: 100%;
}

.experience-company { font-weight: 600; }

.experience-date {
  margin-left: auto;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-style: italic;
}

.experience-summary {
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 0.9rem;
}

.experience-list {
  color: var(--ink-soft);
  line-height: 1.75;
  padding-left: 1.1rem;
}

.experience-list li { margin-bottom: 0.6rem; }
.experience-list strong { color: var(--pink-deep); }

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
}

.project-card {
  background: rgba(255, 250, 238, 0.75);
  border: 1px solid var(--ink-faint);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 26px rgba(36, 29, 23, 0.16);
}

.project-header {
  padding: 1.2rem;
  border-bottom: 1px solid var(--ink-faint);
}

.project-title {
  font-size: 1.1rem;
  color: var(--pink-deep);
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
}

.project-description {
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.6;
}

.project-tech {
  padding: 0.9rem 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-tag, .achievement-tag {
  background: var(--pink-soft);
  color: var(--pink-deep);
  padding: 0.25rem 0.7rem;
  border-radius: 15px;
  font-size: 0.78rem;
  border: 1px solid rgba(200, 92, 134, 0.3);
}

.project-links {
  padding: 0 1.2rem 1.1rem;
  margin-top: auto;
  display: flex;
  gap: 1rem;
}

.project-link {
  color: var(--seal);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.project-link:hover { color: var(--pink-deep); }

/* ===== SKILLS ===== */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.2rem;
}

.skill-category {
  background: rgba(255, 250, 238, 0.75);
  padding: 1.3rem;
  border: 1px solid var(--ink-faint);
}

.skill-category h3 {
  color: var(--pink-deep);
  margin-bottom: 1rem;
  font-size: 1.1rem;
  font-family: var(--font-display);
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.skill-chip {
  background: var(--pink-soft);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  border: 1px solid rgba(200, 92, 134, 0.28);
  transition: all 0.25s ease;
}

.skill-chip:hover {
  background: var(--seal);
  color: var(--paper-light);
}

/* ===== EDUCATION ===== */
/* A single left-hand timeline line; the panel is too narrow to alternate. */
.timeline {
  position: relative;
  padding-left: 36px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--seal), var(--pink));
}

.timeline-item {
  margin: 0 0 1.4rem;
  position: relative;
}

.timeline-dot {
  position: absolute;
  top: 1.4rem;
  left: -33px;
  width: 16px;
  height: 16px;
  background: var(--seal);
  border-radius: 50%;
  border: 3px solid var(--paper);
}

.timeline-content {
  background: rgba(255, 250, 238, 0.75);
  padding: 1.3rem 1.4rem;
  border: 1px solid var(--ink-faint);
  color: var(--ink-soft);
}

.timeline-content h3 {
  color: var(--pink-deep);
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
  font-family: var(--font-display);
}

.timeline-date { color: var(--ink); font-weight: 600; margin-bottom: 0.3rem; }
.timeline-location { font-size: 0.88rem; margin-bottom: 0.6rem; }

.achievements {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.8rem;
}

.certifications { margin-top: 2.4rem; }

.certifications h3 {
  margin-bottom: 1.2rem;
  font-size: 1.4rem;
  font-family: var(--font-display);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.cert-card {
  background: rgba(255, 250, 238, 0.75);
  padding: 1.3rem 1rem;
  text-align: center;
  border: 1px solid var(--ink-faint);
}

.cert-card i { font-size: 1.8rem; color: var(--seal); margin-bottom: 0.7rem; }
.cert-card h4 { margin-bottom: 0.4rem; font-family: var(--font-display); }
.cert-card p { color: var(--ink-soft); font-size: 0.85rem; margin-bottom: 0.6rem; }
.cert-date { color: var(--pink-deep); font-size: 0.8rem; font-style: italic; }

/* ===== CONTACT ===== */
.contact-container {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.8rem;
}

.contact-info .contact-item {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem;
  background: rgba(255, 250, 238, 0.75);
  border: 1px solid var(--ink-faint);
  min-width: 0;
}

.contact-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--pink-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--seal);
}

.contact-item h4 { color: var(--pink-deep); margin-bottom: 0.2rem; font-family: var(--font-display); }

.contact-item p, .contact-item a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.linkedin-link:hover { color: var(--pink-deep); }

.contact-form {
  background: rgba(255, 250, 238, 0.75);
  padding: 1.6rem;
  border: 1px solid var(--ink-faint);
}

.form-group { margin-bottom: 1.1rem; }

.form-group label {
  display: block;
  color: var(--pink-deep);
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--ink-faint);
  color: var(--ink);
  font-size: 1rem;
  font-family: var(--font-body);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--seal);
  background: rgba(255, 255, 255, 0.8);
}

.form-submit {
  width: 100%;
  padding: 0.9rem;
  background: linear-gradient(135deg, var(--seal), var(--pink-deep));
  border: none;
  color: var(--paper-light);
  font-size: 1rem;
  font-family: var(--font-display);
  cursor: pointer;
  transition: all 0.3s ease;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(156, 50, 50, 0.3);
}

/* ===== SCROLL PROGRESS ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--seal), var(--pink));
  z-index: 9999;
  transition: width 0.1s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-cue i, .sakura-branch, .loader-kanji { animation: none; }
}

/* ===== RESPONSIVE ===== */
/* Below 900px the panels go full width and the samurai sits behind them. */
@media (max-width: 900px) {
  :root { --panel-w: 92vw; }
  .navbar { width: 94%; height: auto; padding: 0.6rem; flex-wrap: wrap; top: 12px; }
  .navbar a { margin: 0.2rem; padding: 0.4rem 0.7rem; font-size: 0.85rem; }
  .logo, .social { display: none; }
  .hero { padding: 130px 4vw 40px; align-items: center; margin-bottom: 30vh; }
  .section.panel-left, .section.panel-right { margin-left: auto; margin-right: auto; }
  .section { padding: 2.2rem 1.4rem; margin-bottom: 35vh; }
  .sakura-branch { width: 45vw; top: auto; bottom: 0; right: -20px; }
}

@media (max-width: 480px) {
  .hero-content { padding: 2rem 1.3rem; }
  .section h2 { font-size: 1.8rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cta-btn { flex: 1 1 100%; text-align: center; }
}