/* =============================================
   nobox.jp — main stylesheet
   ============================================= */

:root {
  --bg: #0a0a0f;
  --bg-dark: #06060a;
  --bg-card: #111118;
  --bg-card-hover: #16161f;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.14);

  --text: #e8e8f0;
  --text-muted: #888899;
  --text-dim: #555566;

  --accent: #7c6fff;
  --accent-2: #a78bfa;
  --accent-glow: rgba(124, 111, 255, 0.3);

  --font-sans: 'Inter', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --font-mono: 'JetBrains Mono', 'Menlo', monospace;

  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.2s ease;

  --section-padding: clamp(80px, 10vw, 140px);
  --nav-height: 64px;
}

/* ── Light mode ── */
[data-theme="light"] {
  --bg: #f8f8fc;
  --bg-dark: #f0f0f6;
  --bg-card: #ffffff;
  --bg-card-hover: #f4f4fa;
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);

  --text: #1a1a2e;
  --text-muted: #555566;
  --text-dim: #999aaa;

  --accent: #6c5fff;
  --accent-2: #7c6fff;
  --accent-glow: rgba(108, 95, 255, 0.2);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: calc(var(--nav-height) + env(safe-area-inset-top, 0px));
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select {
  font-family: var(--font-sans);
  font-size: 1rem;
}

/* ── Layout ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}
.container-narrow {
  max-width: 720px;
}

/* ── Scroll progress bar ── */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 200;
  transition: width 0.1s linear;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding-top: env(safe-area-inset-top, 0px);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background var(--transition), border-color var(--transition);
}
[data-theme="light"] .nav {
  background: var(--bg);
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.05em;
}
.nav-logo:hover { color: var(--accent-2); }
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  color: var(--accent-2) !important;
  border: 1px solid rgba(167, 139, 250, 0.3);
  padding: 6px 16px;
  border-radius: 20px;
  transition: background var(--transition), border-color var(--transition) !important;
}
.nav-cta:hover {
  background: rgba(167, 139, 250, 0.1);
  border-color: rgba(167, 139, 250, 0.5);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-muted);
  transition: var(--transition);
}

/* ── Theme toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--text);
  background: var(--border);
}
.theme-toggle svg { width: 16px; height: 16px; }
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* ── Language switcher ── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}
.lang-sep {
  color: var(--text-dim);
  font-size: 0.75rem;
  user-select: none;
}
.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 2px 4px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
  letter-spacing: 0.05em;
}
.lang-btn:hover { color: var(--text-muted); }
.lang-btn.active {
  color: var(--accent-2);
  background: rgba(167, 139, 250, 0.1);
}

/* ── Logo strip ── */
.logo-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-dark);
  padding: 2rem 0;
}
.logo-strip-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}
.logo-strip-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-align: center;
  margin-bottom: 1.75rem;
}
.logo-strip-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(3rem, 8vw, 7rem);
}
.logo-strip-logos img {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.logo-strip-logos img[alt="Degas Ltd."] {
  filter: brightness(10);
}
.logo-strip-logos.visible img {
  opacity: 0.75;
  transform: none;
}
.logo-strip-logos.visible img:nth-child(1) { transition-delay: 0s; }
.logo-strip-logos.visible img:nth-child(2) { transition-delay: 0.1s; }
.logo-strip-logos.visible img:nth-child(3) { transition-delay: 0.2s; }
.logo-strip-logos img:hover { opacity: 1; }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-height) + env(safe-area-inset-top, 0px) + 60px) clamp(20px, 5vw, 48px) 80px;
}
.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-2);
  border: 1px solid rgba(167, 139, 250, 0.25);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}
.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--text);
}
.accent { color: var(--accent-2); }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}
.hero-easter-egg {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  opacity: 0.5;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
#particleCanvas {
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

/* gradient vignette */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 60% 40%, rgba(124, 111, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-ghost {
  border: 1px solid var(--border-hover);
  color: var(--text-muted);
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,0.2);
  color: var(--text);
}
.btn-full { width: 100%; justify-content: center; }

/* ── Sections ── */
.section {
  padding: var(--section-padding) 0;
}
.section-dark {
  background: var(--bg-dark);
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: 3rem;
  align-items: start;
}
.about-photo {
  flex-shrink: 0;
}
.about-photo img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  object-position: center 35%;
  border-radius: 50%;
  border: 2px solid var(--border);
  filter: grayscale(15%);
  transition: filter var(--transition);
}
.about-photo img:hover {
  filter: grayscale(0%);
}
.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.2rem;
  max-width: 580px;
}
.about-text p:last-child { margin-bottom: 0; }
.about-stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.stat-num {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.03em;
}
.stat-num span {
  color: var(--accent);
  font-size: 1.8rem;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ── Services ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.service-card {
  background: var(--bg-card);
  padding: 2rem;
  transition: background var(--transition);
}
.service-card:hover { background: var(--bg-card-hover); }
.service-icon {
  width: 40px;
  height: 40px;
  color: var(--accent-2);
  margin-bottom: 1.25rem;
}
.service-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Skills ── */
.skills-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2.5rem;
}
.skill-group-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-block;
  font-size: 0.83rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
  transition: border-color var(--transition), color var(--transition);
}
.tag:hover {
  border-color: var(--accent);
  color: var(--accent-2);
}

/* ── Projects ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.project-meta {
  display: flex;
  gap: 6px;
  margin-bottom: 1rem;
}
.project-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-2);
  border: 1px solid rgba(167, 139, 250, 0.2);
  padding: 2px 8px;
  border-radius: 4px;
}
.project-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}
.project-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.project-card-cta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  background: linear-gradient(135deg, rgba(124,111,255,0.06), rgba(167,139,250,0.04));
  border-style: dashed;
}
.project-card-cta p {
  font-size: 1rem;
  color: var(--text-muted);
}

/* ── Contact ── */
.contact-lead {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.req { color: var(--accent-2); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--transition);
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.form-group select option { background: var(--bg-card); }
.form-note {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: center;
}
.form-success {
  text-align: center;
  padding: 3rem 2rem;
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: var(--radius);
  background: rgba(124, 111, 255, 0.05);
}
.form-success p {
  color: var(--accent-2);
  font-size: 1.1rem;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}
.footer-nav {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--text-muted); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ── Resume modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.modal-overlay.open { display: flex; }
.modal {
  position: relative;
  width: 100%;
  max-width: 860px;
  height: 90vh;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.modal iframe {
  width: 100%;
  height: 100%;
  border: none;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 10;
  font-size: 1.5rem;
  color: var(--text-muted);
  line-height: 1;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--bg-card);
  transition: color var(--transition), background var(--transition);
}
.modal-close:hover {
  color: var(--text);
  background: var(--bg-card-hover);
}

/* ── Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: calc(var(--nav-height) + env(safe-area-inset-top, 0px)); left: 0; right: 0;
    background: var(--bg);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    transform: translateY(-110%);
    transition: transform 0.3s ease;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { transform: translateY(0); }
  .lang-switcher {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    margin-left: 0;
    justify-content: center;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-photo {
    display: flex;
    justify-content: center;
  }
  .about-stats {
    flex-direction: row;
    gap: 2rem;
  }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.4rem; }
  .about-stats { gap: 1.2rem; }
  .stat-num { font-size: 2.2rem; }
}