/* ===================================================
   蔵本歯科医院 - style.css
   モダンで温かみのある白・ベージュ基調のデザイン
=================================================== */

:root {
  --color-bg: #FBF8F3;
  --color-bg-beige: #F1E8DA;
  --color-bg-beige-soft: #F7F1E7;
  --color-white: #FFFFFF;
  --color-accent: #BD9067;
  --color-accent-dark: #9C7248;
  --color-accent-soft: #E7D3BB;
  --color-text: #3A2E26;
  --color-text-light: #6E6155;
  --color-border: #E5DACB;

  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;

  --container-width: 1120px;
  --header-height: 84px;

  --shadow-soft: 0 10px 30px rgba(90, 65, 40, 0.08);
  --shadow-card: 0 6px 20px rgba(90, 65, 40, 0.06);
  --transition: 0.3s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

h1, h2, h3, h4, p, dl, dd, table {
  margin: 0;
}

ul { list-style: none; margin: 0; padding: 0; }

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.only-pc { display: inline; }

@media (max-width: 767px) {
  .only-pc { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
  white-space: nowrap;
}

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

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-soft);
}
.btn--primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
}
.btn--outline:hover {
  background: var(--color-text);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--call {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  padding: 10px 20px;
  font-size: 0.9rem;
}
.btn--call:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--large {
  padding: 16px 34px;
  font-size: 1.05rem;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(251, 248, 243, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.header__inner {
  max-width: var(--container-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.logo__main {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
}
.logo__sub {
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--color-text-light);
}

.nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__list {
  display: flex;
  gap: 32px;
}

.nav__link {
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent-dark);
  transition: width var(--transition);
}
.nav__link:hover::after { width: 100%; }

/* ---------- Hamburger (mobile) ---------- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  z-index: 1100;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-active span:nth-child(2) { opacity: 0; }
.hamburger.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-reception.jpg');
  background-size: cover;
  background-position: center 35%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(189, 144, 103, 0.25), transparent 55%),
    radial-gradient(circle at 80% 75%, rgba(189, 144, 103, 0.2), transparent 50%),
    linear-gradient(180deg, rgba(251,248,243,0.72) 0%, rgba(251,248,243,0.8) 55%, rgba(247,241,231,0.88) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 760px;
  padding: 0 24px;
  margin-top: var(--header-height);
}

.hero__eyebrow {
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  color: var(--color-accent-dark);
  font-weight: 500;
  margin-bottom: 18px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.45;
  margin-bottom: 24px;
}

.hero__lead {
  font-size: 1.05rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 26px;
  height: 42px;
  border: 1px solid var(--color-text-light);
  border-radius: 999px;
}
.hero__scroll span {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--color-accent-dark);
  animation: scrollDown 1.6s infinite;
}
@keyframes scrollDown {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 22px; }
}

/* ---------- Section common ---------- */
.section {
  padding: 100px 0;
}

.section:nth-of-type(even) {
  background: var(--color-bg-beige-soft);
}

.section__eyebrow {
  text-align: center;
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: 10px;
}

.section__title {
  font-family: var(--font-serif);
  text-align: center;
  font-size: clamp(1.6rem, 3.6vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
}

.section__lead {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
  color: var(--color-text-light);
}

/* ---------- Concept ---------- */
.concept__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.concept__card {
  background: var(--color-white);
  border-radius: 16px;
  padding: 36px 26px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.concept__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
}

.concept__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  color: var(--color-accent-dark);
}
.concept__icon svg { width: 100%; height: 100%; }

.concept__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.concept__text {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ---------- Commitment (photo rows) ---------- */
.commitment__list {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.commitment__row {
  display: flex;
  align-items: center;
  gap: 64px;
}

.commitment__row--reverse {
  flex-direction: row-reverse;
}

.commitment__photo {
  flex: 0 0 52%;
  aspect-ratio: 4 / 3;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.commitment__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.commitment__row:hover .commitment__photo img {
  transform: scale(1.05);
}

.commitment__body {
  flex: 1;
  position: relative;
}

.commitment__num {
  display: block;
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--color-accent-soft);
  line-height: 1;
  margin-bottom: 12px;
}

.commitment__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.commitment__text {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* ---------- Director ---------- */
.director__wrap {
  display: flex;
  gap: 60px;
  align-items: flex-start;
}

.director__photo {
  flex: 0 0 320px;
  aspect-ratio: 3 / 4;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(160deg, var(--color-bg-beige) 0%, var(--color-accent-soft) 100%);
  box-shadow: var(--shadow-card);
}

.director__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.director__body { flex: 1; }

.director__name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.director__name-en {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

.director__lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-accent-dark);
  margin-bottom: 20px;
}

.director__text {
  color: var(--color-text-light);
  margin-bottom: 34px;
}

.director__profile {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  border-top: 1px solid var(--color-border);
  padding-top: 26px;
}
.director__profile dt {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-accent-dark);
  margin-bottom: 8px;
}
.director__profile dd {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.director__profile--single {
  grid-template-columns: 1fr;
}

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

.director__history li {
  padding-left: 14px;
  position: relative;
}

.director__history li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--color-accent-soft);
}

/* ---------- Treatment ---------- */
.treatment__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.treatment__card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 34px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.treatment__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
  border-color: transparent;
}

.treatment__icon {
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: var(--color-accent-dark);
}

.treatment__icon svg {
  width: 100%;
  height: 100%;
}

.treatment__card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.treatment__card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ---------- Info ---------- */
.info__wrap {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: start;
}

.info__table-wrap {
  background: var(--color-white);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  padding: 36px;
}

.info__table {
  width: 100%;
  border-collapse: collapse;
}

.info__table th,
.info__table td {
  text-align: left;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
  font-size: 0.92rem;
}

.info__table tr:last-child th,
.info__table tr:last-child td {
  border-bottom: none;
}

.info__table th {
  width: 110px;
  color: var(--color-accent-dark);
  font-weight: 700;
  white-space: nowrap;
}

.info__table td a {
  color: var(--color-accent-dark);
  font-weight: 600;
}

.info__hours {
  width: 100%;
  border-collapse: collapse;
  margin-top: 4px;
  font-size: 0.8rem;
}
.info__hours th, .info__hours td {
  border: 1px solid var(--color-border);
  padding: 8px 4px;
  text-align: center;
  white-space: nowrap;
}
.info__hours thead th {
  background: var(--color-bg-beige-soft);
  color: var(--color-text);
  font-weight: 600;
}
.info__hours td:first-child {
  text-align: left;
  color: var(--color-text-light);
  padding-left: 8px;
}

.info__note {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 8px;
}

.info__call {
  width: 100%;
  margin-top: 32px;
}

.info__map-wrap {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info__map {
  flex: 1;
  min-height: 380px;
  border-radius: 16px;
  overflow: hidden;
  background: var(--color-bg-beige);
  box-shadow: var(--shadow-card);
}

.info__map iframe {
  display: block;
}

.info__map-link {
  align-self: flex-start;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent-dark);
  border-bottom: 1px solid var(--color-accent-soft);
  padding-bottom: 2px;
  transition: color var(--transition), border-color var(--transition);
}

.info__map-link:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-text);
  color: #EDE4D6;
  padding: 48px 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 20px;
}

.footer .logo__main {
  color: var(--color-white);
  font-size: 1.1rem;
}

.footer__brand p {
  font-size: 0.82rem;
  color: #C9BBA8;
  margin-top: 8px;
}

.footer__copy {
  font-size: 0.75rem;
  color: #A8967E;
}

/* ---------- Floating call button (mobile) ---------- */
.float-call {
  display: none;
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 900;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 999px;
  padding: 14px 22px;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 8px 24px rgba(90, 65, 40, 0.35);
}
.float-call svg { width: 18px; height: 18px; }

/* =========================================================
   Responsive
========================================================= */

/* Tablet */
@media (max-width: 1024px) {
  .concept__grid { grid-template-columns: repeat(2, 1fr); }
  .treatment__grid { grid-template-columns: repeat(2, 1fr); }
  .info__wrap { grid-template-columns: 1fr; }
  .info__map { min-height: 280px; }
  .commitment__row,
  .commitment__row--reverse {
    flex-direction: column;
    gap: 32px;
  }
  .commitment__photo { flex-basis: auto; width: 100%; }
}

/* Mobile */
@media (max-width: 767px) {
  :root { --header-height: 68px; }

  .section { padding: 70px 0; }

  .hamburger { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100svh - var(--header-height));
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 40px 28px;
    gap: 36px;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }
  .nav.is-open { transform: translateX(0); }

  .nav__list {
    flex-direction: column;
    gap: 24px;
    width: 100%;
  }
  .nav__link { font-size: 1.1rem; }

  .nav__call {
    width: 100%;
    justify-content: center;
    padding: 16px;
  }

  .hero__actions { flex-direction: column; width: 100%; }
  .hero__actions .btn { width: 100%; }

  .concept__grid { grid-template-columns: 1fr; }
  .treatment__grid { grid-template-columns: 1fr; }

  .commitment__list { gap: 48px; }
  .commitment__num { font-size: 2.4rem; }

  .director__wrap {
    flex-direction: column;
    gap: 32px;
  }
  .director__photo {
    flex-basis: auto;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }
  .director__profile { grid-template-columns: 1fr; }

  .info__table-wrap { padding: 24px; }
  .info__table th { width: 88px; font-size: 0.85rem; }
  .info__table th, .info__table td { padding: 14px 0; font-size: 0.85rem; }

  .float-call { display: inline-flex; }
}

@media (max-width: 400px) {
  .info__hours { font-size: 0.7rem; }
  .info__hours th, .info__hours td { padding: 6px 2px; }
}