/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --color-bg: #f8f9fb;
  --color-bg-alt: #ffffff;
  --color-bg-dark: #f0f4f8;
  --color-text: #1a2233;
  --color-text-muted: #6b7a99;
  --color-accent: #0ea5e9;
  --color-accent-dark: #0284c7;
  --color-accent-light: #e0f2fe;
  --color-accent-cyan: #06b6d4;
  --color-border: #e2e8f0;
  --color-white: #ffffff;

  --font-sans: 'Noto Sans JP', 'Inter', system-ui, sans-serif;
  --font-en: 'Inter', system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(14,165,233,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(14,165,233,.15), 0 4px 12px rgba(0,0,0,.08);

  --header-h: 68px;
  --container-max: 1100px;
  --section-gap: 100px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg { 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 { font: inherit; }

/* ============================================================
   Utility
   ============================================================ */
.container {
  width: min(var(--container-max), 100% - 48px);
  margin-inline: auto;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
  color: var(--color-white);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: .95rem;
  transition: opacity .2s, transform .2s, box-shadow .2s, background .2s, color .2s, border-color .2s;
  box-shadow: 0 4px 14px rgba(14,165,233,.35);
}

.btn-primary:hover {
  opacity: .9;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14,165,233,.45);
}

.header__nav-link.btn-primary.btn-primary--outline {
  background: var(--color-white);
  color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: none;
}

.header__nav-link.btn-primary.btn-primary--outline:hover {
  background: var(--color-accent-light);
  opacity: 1;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: .95rem;
  transition: background .2s, color .2s, transform .2s;
}

.btn-secondary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow .3s;
}

.header.scrolled { box-shadow: var(--shadow-md); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  letter-spacing: .5px;
}

.header__logo-title {
  font-size: .7rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: .5px;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header__nav-link {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: .9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color .2s, background .2s;
}

.header__nav-link:hover { color: var(--color-accent); background: var(--color-accent-light); }

.header__nav-link.btn-primary {
  color: var(--color-white);
  padding: 8px 20px;
}

.header__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.header__menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

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

/* ============================================================
   Section common
   ============================================================ */
.section {
  padding-block: var(--section-gap);
}

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

.section__header {
  text-align: center;
  margin-bottom: 56px;
}

.section__label {
  font-family: var(--font-en);
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section__title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -.5px;
}

.section__desc {
  margin-top: 12px;
  color: var(--color-text-muted);
  font-size: .95rem;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 100svh;
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: 60px;
  background: linear-gradient(160deg, #f8f9fb 60%, #e0f2fe 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero__label {
  font-family: var(--font-en);
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero__name {
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 4px;
}

.hero__name-en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-top: 6px;
}

.hero__role {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: clamp(.9rem, 2vw, 1.1rem);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero__desc {
  color: var(--color-text-muted);
  font-size: .95rem;
  line-height: 1.8;
  max-width: 500px;
  margin-bottom: 32px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Hero visual */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
}

.hero__avatar {
  position: relative;
}

.hero__avatar-circle {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-light), #bae6fd);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.hero__avatar-circle svg {
  width: 140px;
  height: 140px;
  opacity: .7;
}

.hero__badge {
  position: absolute;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  animation: float 3s ease-in-out infinite;
}

.hero__badge--1 { top: 20%; left: 5%; animation-delay: 0s; }
.hero__badge--2 { top: 10%; right: 10%; animation-delay: 1s; }
.hero__badge--3 { bottom: 25%; right: 5%; animation-delay: 2s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Hero scroll indicator */
.hero__scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-block: 24px;
  color: var(--color-text-muted);
  font-size: .75rem;
  font-family: var(--font-en);
  letter-spacing: 1px;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   Skills
   ============================================================ */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: transform .3s, box-shadow .3s;
  opacity: 0;
  transform: translateY(20px);
}

.skill-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .6s ease, transform .6s ease, box-shadow .3s;
}

.skill-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.skill-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.skill-card__icon svg { width: 24px; height: 24px; }

.skill-card__icon--html { background: #fff4ec; color: #e34f26; }
.skill-card__icon--js   { background: #fefce8; color: #ca8a04; }
.skill-card__icon--react { background: #ecfeff; color: #0891b2; }
.skill-card__icon--wp   { background: #f0f9ff; color: #21759b; }
.skill-card__icon--figma { background: #fdf4ff; color: #a855f7; }
.skill-card__icon--aws  { background: #fff7ed; color: #f97316; }

.skill-card__name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.skill-card__desc {
  font-size: .85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}


/* ============================================================
   Works
   ============================================================ */
.works__coming-soon {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 80px 24px;
  background: var(--color-white);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  gap: 16px;
}

.works__coming-soon-icon svg {
  width: 80px;
  height: 80px;
  animation: spin 12s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.works__coming-soon-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
}

.works__coming-soon-desc {
  color: var(--color-text-muted);
  font-size: .95rem;
  line-height: 1.8;
}

/* ============================================================
   Works
   ============================================================ */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.work-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color 0.2s;
}

.work-card:hover { border-color: var(--color-accent); }

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.work-tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.work-tag--make { background: var(--color-accent-light); color: var(--color-accent-dark); }
.work-tag--ops { background: #dcfce7; color: #15803d; }
.work-tag--current { background: #fef9c3; color: #a16207; }

.work-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.work-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.work-link {
  font-size: 12px;
  color: var(--color-accent);
  text-decoration: none;
}

.work-link:hover { text-decoration: underline; }

/* ============================================================
   Pricing
   ============================================================ */
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
  margin-bottom: 32px;
}

.pricing-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  opacity: 0;
  transform: translateY(20px);
}

.pricing-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .6s ease, transform .6s ease;
}

.pricing-card--featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: scale(1.02);
}

.pricing-card--featured.visible {
  transform: scale(1.02) translateY(0);
}

.pricing-card__name-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pricing-card__badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg-dark);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 600;
  width: fit-content;
}

.pricing-card__badge--featured {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-cyan));
  color: var(--color-white);
}

.pricing-card__name {
  font-size: 1.1rem;
  font-weight: 700;
}

.pricing-card__subtitle {
  font-size: .85rem;
  color: var(--color-text-muted);
  margin-top: -8px;
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pricing-card__price-from {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--color-accent);
  letter-spacing: -1px;
}

.pricing-card__price-unit {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .88rem;
  color: var(--color-text-muted);
}

.pricing-card__features li::before {
  content: '';
  display: block;
  width: 16px;
  height: 16px;
  min-width: 16px;
  background: var(--color-accent-light);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 8.5L6.5 11L12 5.5' stroke='%230ea5e9' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  margin-top: 2px;
}

.pricing__details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.pricing__detail-block {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.pricing__detail-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.pricing__detail-title svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.pricing__detail-title--included { color: var(--color-accent); }
.pricing__detail-title--extra { color: #f97316; }

.pricing__detail-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pricing__detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .85rem;
  color: var(--color-text-muted);
}

.pricing__detail-list li::before {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  min-width: 4px;
  border-radius: 50%;
  background: var(--color-text-muted);
  margin-top: 8px;
}

.pricing__detail-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  font-size: .82rem;
  font-weight: 600;
  color: #f97316;
}

.pricing__note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: .83rem;
  line-height: 1.8;
}

@media (max-width: 640px) {
  .pricing__details { grid-template-columns: 1fr; }
}

/* ============================================================
   Contact
   ============================================================ */
.contact {
  background: linear-gradient(160deg, #f8f9fb 0%, #e0f2fe 100%);
}

.contact__form {
  max-width: 640px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact__form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact__label {
  font-size: .88rem;
  font-weight: 600;
  color: var(--color-text);
}

.contact__required {
  color: #ef4444;
}

.contact__input,
.contact__textarea {
  padding: 12px 16px;
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: .95rem;
  color: var(--color-text);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}

.contact__input:focus,
.contact__textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,.12);
}

.contact__input.invalid,
.contact__textarea.invalid {
  border-color: #ef4444;
}

.contact__textarea { resize: vertical; min-height: 140px; }

.contact__error {
  font-size: .8rem;
  color: #ef4444;
  min-height: 1em;
}

.contact__form-footer {
  display: flex;
  justify-content: flex-end;
}

.contact__submit {
  padding: 14px 36px;
}

.contact__submit-icon {
  width: 18px; height: 18px;
  transition: transform .2s;
}

.contact__submit:hover .contact__submit-icon {
  transform: translateX(4px);
}

.contact__success {
  text-align: center;
  padding: 16px;
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: var(--radius-md);
  color: #16a34a;
  font-weight: 500;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,.7);
  padding-top: 48px;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  flex-wrap: wrap;
}

.footer__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 4px;
}

.footer__role {
  font-size: .82rem;
  color: var(--color-accent);
}

.footer__nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer__nav-list a {
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  transition: color .2s;
}

.footer__nav-list a:hover { color: var(--color-accent); }

.footer__bottom {
  padding-block: 20px;
  text-align: center;
}

.footer__copy {
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  :root { --section-gap: 72px; }

  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .pricing__grid { grid-template-columns: 1fr; }
  .pricing-card--featured { transform: none; }
  .pricing-card--featured.visible { transform: translateY(0); }
}

@media (max-width: 768px) {
  :root { --section-gap: 60px; }

  .header__menu-btn { display: flex; }

  .header__nav {
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0 24px;
    display: none;
    box-shadow: var(--shadow-md);
  }

  .header__nav.open { display: block; }

  .header__nav-list {
    flex-direction: column;
    gap: 2px;
    padding-inline: 24px;
  }

  .header__nav-link {
    display: block;
    padding: 10px 16px;
    font-size: 1rem;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__desc { margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .hero__visual { height: 280px; }
  .hero__badge--1 { left: -5%; }
  .hero__badge--3 { right: -5%; }
}

@media (max-width: 560px) {
  .skills__grid { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; align-items: center; text-align: center; }
  .footer__nav-list { justify-content: center; }
}