/* ========== Base ========== */
:root {
  --color-bg: #d8d9df;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-sub: #6b6b6b;
  --color-accent: #6d5cff;
  --color-accent-2: #ff6cab;
  --color-accent-3: #29c8ff;
  --color-border: #ececff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(109, 92, 255, 0.08);
  --shadow-strong: 0 18px 50px rgba(109, 92, 255, 0.18);
  --max-width: 960px;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", sans-serif;
  --gradient-brand: linear-gradient(
    135deg,
    #ff6cab 0%,
    #6d5cff 50%,
    #29c8ff 100%
  );
  --gradient-soft: linear-gradient(
    135deg,
    rgba(255, 108, 171, 0.12) 0%,
    rgba(109, 92, 255, 0.12) 50%,
    rgba(41, 200, 255, 0.12) 100%
  );
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.7;
}

img {
  max-width: 100%;
  display: block;
}

/* ========== Header / Nav ========== */
.site-header {
  background-color: rgba(255, 255, 255, 0.75);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(109, 92, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.8rem;
}

.site-nav a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

/* ========== Main / Container ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.page-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-subtitle {
  color: var(--color-text-sub);
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 3rem 0 1.2rem;
  padding-left: 0.9rem;
  position: relative;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 5px;
  border-radius: 5px;
  background: var(--gradient-brand);
}

/* ========== Hero (Top) ========== */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3rem 0 4rem;
  isolation: isolate;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  z-index: -1;
  animation: float 12s ease-in-out infinite;
}

.hero::before {
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, #ff6cab, transparent 70%);
  top: -40px;
  left: -80px;
}

.hero::after {
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, #29c8ff, transparent 70%);
  bottom: -80px;
  right: -60px;
  animation-delay: -6s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -20px); }
}

.hero__image {
  position: relative;
  padding: 6px;
  border-radius: calc(var(--radius) + 6px);
  background: var(--gradient-brand);
  box-shadow: var(--shadow-strong);
}

.hero__image img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.hero__title {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
  line-height: 1.3;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__role {
  display: inline-block;
  color: #fff;
  background: var(--gradient-brand);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.2rem;
  letter-spacing: 0.04em;
  box-shadow: 0 6px 16px rgba(109, 92, 255, 0.25);
}

.hero__lead {
  color: var(--color-text-sub);
  font-size: 1rem;
  line-height: 1.95;
}

/* ========== About list ========== */
.about-list {
  display: grid;
  grid-template-columns: 120px 1fr;
  row-gap: 0.8rem;
  column-gap: 1.5rem;
  background: var(--color-surface);
  padding: 1.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.about-list::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
}

.about-list dt {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.about-list dd {
  font-size: 0.95rem;
}

/* ========== Works grid ========== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.work-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}

.work-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 2px;
  background: var(--gradient-brand);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

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

.work-card:hover::before {
  opacity: 1;
}

.work-card__image {
  overflow: hidden;
}

.work-card__image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.work-card:hover .work-card__image img {
  transform: scale(1.06);
}

.work-card__body {
  padding: 1.2rem 1.3rem 1.4rem;
}

.work-card__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-brand);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
  letter-spacing: 0.04em;
}

.work-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.work-card__desc {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.7;
}

/* ========== Hobby block ========== */
.hobby-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.hobby-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.8rem 1.4rem;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.hobby-card::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 160%;
  height: 160%;
  background: var(--gradient-soft);
  border-radius: 50%;
  z-index: 0;
  transition: transform 0.5s ease;
  transform: scale(0.6);
}

.hobby-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-strong);
}

.hobby-card:hover::after {
  transform: scale(1);
}

.hobby-card__icon,
.hobby-card__title,
.hobby-card__desc {
  position: relative;
  z-index: 1;
}

.hobby-card__icon {
  font-size: 2.4rem;
  margin-bottom: 0.6rem;
  display: inline-block;
  transition: transform 0.4s ease;
}

.hobby-card:hover .hobby-card__icon {
  transform: scale(1.15) rotate(-6deg);
}

.hobby-card__title {
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.hobby-card__desc {
  font-size: 0.88rem;
  color: var(--color-text-sub);
}

/* ========== Contact form ========== */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info {
  background: var(--color-surface);
  padding: 1.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.contact-info::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
}

.contact-info__item {
  margin-bottom: 1.2rem;
}

.contact-info__item:last-child {
  margin-bottom: 0;
}

.contact-info__label {
  font-size: 0.75rem;
  color: var(--color-accent);
  margin-bottom: 0.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-info__value {
  font-size: 1rem;
  font-weight: 500;
}

.contact-form {
  background: var(--color-surface);
  padding: 1.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.contact-form::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
}

.contact-form label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  display: block;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.75rem 0.95rem;
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(109, 92, 255, 0.12);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-form button {
  background: var(--gradient-brand);
  background-size: 200% 200%;
  color: #fff;
  border: none;
  padding: 0.95rem 1.5rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(109, 92, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-position 0.4s ease;
}

.contact-form button:hover {
  transform: translateY(-2px);
  background-position: 100% 0;
  box-shadow: 0 14px 30px rgba(109, 92, 255, 0.4);
}

/* ========== Footer ========== */
.site-footer {
  border-top: 1px solid rgba(109, 92, 255, 0.08);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--color-text-sub);
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* ========== Responsive ========== */
@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__title {
    font-size: 2rem;
  }

  .page-title {
    font-size: 1.9rem;
  }

  .about-list {
    grid-template-columns: 100px 1fr;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .site-nav ul {
    gap: 1.2rem;
  }
}