/* ============================================
   Luvia-Forge Corporate Site
   ============================================ */

:root {
  --color-text: #2b2b2b;
  --color-text-light: #767676;
  --color-bg: #fdfcfb;
  --color-bg-gray: #f4f2f0;
  --color-accent: #b98a5e;        /* warm bronze — "forge" */
  --color-accent-dark: #8f6a47;
  --color-dark: #1f1d1b;
  --color-line: #e3ded9;
  --font-en: 'Montserrat', sans-serif;
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-ja);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.9;
  letter-spacing: 0.04em;
  font-weight: 400;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.pc-only { display: inline; }

/* ============ Fade-in animation ============ */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Header ============ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(253, 252, 251, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.header.is-scrolled {
  border-bottom-color: var(--color-line);
}
.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header__logo {
  display: flex;
  align-items: center;
}
.header__logo-img {
  height: 44px;
  width: auto;
}
.header__logo-text,
.footer__logo-text {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.08em;
  color: var(--color-dark);
}
.gnav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.gnav__list {
  display: flex;
  gap: 32px;
}
.gnav__list a {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.4;
  transition: opacity 0.3s;
}
.gnav__list a:hover { opacity: 0.6; }
.gnav__list .en {
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}
.gnav__list .ja {
  font-size: 0.66rem;
  color: var(--color-text-light);
}
.gnav__contact {
  background: var(--color-dark);
  color: #fff;
  font-size: 0.85rem;
  padding: 12px 28px;
  border-radius: 999px;
  transition: background 0.3s;
}
.gnav__contact:hover { background: var(--color-accent); }

.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
}
.menu-btn span {
  display: block;
  width: 26px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-dark);
  transition: transform 0.3s, opacity 0.3s;
}
.menu-btn.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-btn.is-open span:nth-child(2) { opacity: 0; }
.menu-btn.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 78% 28%, rgba(185, 138, 94, 0.18), transparent 65%),
    radial-gradient(ellipse 55% 45% at 15% 82%, rgba(185, 138, 94, 0.10), transparent 60%),
    linear-gradient(160deg, #fdfcfb 0%, #f6f1ec 55%, #efe6dd 100%);
}
.hero__bg::after {
  content: "";
  position: absolute;
  right: -12vw;
  top: 18vh;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  border: 1px solid rgba(185, 138, 94, 0.35);
  border-radius: 50%;
}
.hero__inner {
  position: relative;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 140px 24px 80px;
}
.hero__en {
  font-family: var(--font-en);
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  font-weight: 600;
  letter-spacing: 0.34em;
  color: var(--color-accent);
  margin-bottom: 20px;
}
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6.2vw, 4.6rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.5;
  color: var(--color-dark);
  margin-bottom: 32px;
}
.hero__lead {
  font-size: clamp(0.92rem, 1.5vw, 1.05rem);
  color: var(--color-text-light);
  line-height: 2.2;
}
.hero__scroll {
  position: absolute;
  bottom: -30px;
  left: 24px;
  font-family: var(--font-en);
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero__scroll::after {
  content: "";
  width: 60px;
  height: 1px;
  background: var(--color-text-light);
  animation: scrollLine 2.2s ease infinite;
  transform-origin: left;
}
@keyframes scrollLine {
  0% { transform: scaleX(0); }
  45% { transform: scaleX(1); transform-origin: left; }
  55% { transform-origin: right; }
  100% { transform: scaleX(0); transform-origin: right; }
}

/* ============ Sections common ============ */
.section {
  padding: 110px 0;
}
.section__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section__head {
  margin-bottom: 60px;
}
.section__en {
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: 10px;
}
.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-dark);
}
.section__desc {
  margin-top: 22px;
  color: var(--color-text-light);
  font-size: 0.95rem;
}
.section__en--light { color: #d8b791; }
.section__title--light,
.section__desc--light { color: #fff; }
.section__desc--light { opacity: 0.75; }

/* ============ About ============ */
.about__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 70px;
  align-items: center;
}
.about__catch {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.6vw, 1.8rem);
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--color-dark);
  margin-bottom: 30px;
}
.about__text p {
  margin-bottom: 1.4em;
  font-size: 0.95rem;
}
.about__visual {
  position: relative;
  min-height: 420px;
}
.about__visual-box {
  position: absolute;
  border-radius: 4px;
}
.about__visual-box--1 {
  width: 78%;
  height: 78%;
  top: 0;
  right: 0;
  background: linear-gradient(150deg, #e9dccd 0%, #d9c1a6 60%, #c8a37e 100%);
}
.about__visual-box--2 {
  width: 52%;
  height: 52%;
  bottom: 0;
  left: 0;
  background: linear-gradient(160deg, #f6f1ec 0%, #e7d8c8 100%);
  border: 1px solid var(--color-line);
}

/* ============ Message ============ */
.message {
  background: var(--color-dark);
  padding: 90px 24px;
  text-align: center;
}
.message__en {
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: #d8b791;
  margin-bottom: 24px;
}
.message__text {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.8vw, 1.9rem);
  letter-spacing: 0.14em;
  line-height: 2.1;
  color: #fdfcfb;
}

/* ============ Service ============ */
.service {
  background: var(--color-bg-gray);
}
.service__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  background: #fff;
  padding: 38px 28px;
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #e0c3a3);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(80, 60, 40, 0.10);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card__num {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.service-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-dark);
  line-height: 1.6;
  margin-bottom: 4px;
}
.service-card__en {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-text-light);
  margin-bottom: 18px;
}
.service-card__text {
  font-size: 0.84rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ============ News ============ */
.news__list {
  border-top: 1px solid var(--color-line);
}
.news__item {
  display: flex;
  align-items: baseline;
  gap: 28px;
  padding: 26px 8px;
  border-bottom: 1px solid var(--color-line);
  flex-wrap: wrap;
}
.news__item time {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  flex-shrink: 0;
}
.news__cat {
  font-size: 0.7rem;
  color: var(--color-accent-dark);
  border: 1px solid var(--color-accent);
  border-radius: 999px;
  padding: 2px 14px;
  flex-shrink: 0;
}
.news__item p {
  font-size: 0.93rem;
}

/* ============ Company ============ */
.company {
  background: var(--color-bg-gray);
}
.company__table-wrap {
  background: #fff;
  border-radius: 6px;
  padding: 20px 40px;
  overflow-x: auto;
}
.company__table {
  width: 100%;
  border-collapse: collapse;
}
.company__table th,
.company__table td {
  padding: 24px 12px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
  font-size: 0.93rem;
}
.company__table tr:last-child th,
.company__table tr:last-child td {
  border-bottom: none;
}
.company__table th {
  width: 180px;
  font-weight: 700;
  color: var(--color-dark);
  white-space: nowrap;
}
.company__biz li {
  position: relative;
  padding-left: 1.2em;
  margin-bottom: 0.4em;
}
.company__biz li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ============ Contact ============ */
.contact {
  background: var(--color-dark);
}
.contact .section__head {
  text-align: center;
}
.contact__form {
  max-width: 680px;
  margin: 0 auto;
}
.form-row {
  margin-bottom: 28px;
}
.form-row label {
  display: block;
  color: #fdfcfb;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 10px;
}
.req {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.66rem;
  border-radius: 3px;
  padding: 1px 8px;
  margin-left: 10px;
  vertical-align: middle;
}
.form-row input,
.form-row textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 6px;
  padding: 14px 16px;
  color: #fff;
  font-family: var(--font-ja);
  font-size: 0.95rem;
  transition: border-color 0.3s, background 0.3s;
}
.form-row input::placeholder,
.form-row textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.1);
}
.contact__submit {
  display: block;
  margin: 44px auto 0;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-family: var(--font-ja);
  font-size: 0.98rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  padding: 16px 72px;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
}
.contact__submit:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

/* ============ Footer ============ */
.footer {
  background: #171513;
  color: #b9b3ac;
  padding: 70px 0 30px;
}
.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer__main {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}
.footer__logo-img {
  height: 40px;
  width: auto;
  margin-bottom: 18px;
  /* 黒ロゴをダーク背景用に白く反転 */
  filter: brightness(0) invert(1);
}
.footer__logo-text {
  color: #fdfcfb;
  margin-bottom: 18px;
}
.footer__address {
  font-size: 0.83rem;
  line-height: 2;
  margin-top: 14px;
}
.footer__nav ul {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer__nav a {
  font-size: 0.85rem;
  transition: color 0.3s;
}
.footer__nav a:hover { color: #fff; }
.footer__copy {
  text-align: center;
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  color: #7d776f;
}

/* ============ Responsive ============ */
@media (max-width: 960px) {
  .service__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about__grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  .about__visual { min-height: 320px; }
}

@media (max-width: 768px) {
  .pc-only { display: none; }

  .menu-btn { display: flex; }

  .gnav {
    position: fixed;
    inset: 0;
    background: rgba(253, 252, 251, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: 40px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
  }
  .gnav.is-open {
    opacity: 1;
    visibility: visible;
  }
  .gnav__list {
    flex-direction: column;
    align-items: center;
    gap: 28px;
  }
  .gnav__list .en { font-size: 1.05rem; }
  .gnav__list .ja { font-size: 0.75rem; }

  .section { padding: 70px 0; }
  .section__head { margin-bottom: 40px; }

  .hero__inner { padding: 120px 24px 100px; }
  .hero__scroll { bottom: 40px; }

  .service__grid { grid-template-columns: 1fr; }

  .news__item { gap: 14px; padding: 20px 4px; }
  .news__item p { width: 100%; }

  .company__table-wrap { padding: 8px 20px; }
  .company__table th,
  .company__table td {
    display: block;
    width: 100%;
    padding: 8px 0;
  }
  .company__table th {
    border-bottom: none;
    padding-top: 20px;
  }
  .company__table td {
    padding-bottom: 20px;
  }

  .footer__main {
    flex-direction: column;
  }
}