/* ===========================
   Saki Photography LP
   style.css
   =========================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
}
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* --- CSS Custom Properties --- */
:root {
  --color-bg:        #FFFFFF;
  --color-surface:   #F5F0EB;
  --color-accent:    #C8A882;
  --color-accent-dk: #A88860;
  --color-text:      #2E2E2E;
  --color-text-sub:  #7A7069;
  --color-border:    #E8E0D8;
  --color-overlay:   rgba(20, 15, 10, 0.42);

  --font-serif: 'Noto Serif JP', 'Georgia', serif;
  --font-sans:  'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-en:    'Playfair Display', serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.5rem;
  --text-2xl:  2rem;
  --text-3xl:  2.5rem;
  --text-4xl:  3.25rem;

  --leading-tight:  1.4;
  --leading-normal: 1.8;
  --leading-loose:  2.0;

  --tracking-wide:  0.08em;
  --tracking-wider: 0.15em;

  --section-py:    88px;
  --section-py-sp: 56px;
  --container:     1080px;
  --radius:        4px;
  --radius-lg:     10px;
}

/* --- Layout Utilities --- */
.container {
  width: 90%;
  max-width: var(--container);
  margin-inline: auto;
}

.section--white   { background: var(--color-bg); }
.section--surface { background: var(--color-surface); }

.section--white,
.section--surface {
  padding-block: var(--section-py-sp);
}

@media (min-width: 768px) {
  .section--white,
  .section--surface {
    padding-block: var(--section-py);
  }
}

/* --- Scroll Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Section Heading --- */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head__en {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  color: var(--color-accent);
  margin-bottom: 10px;
}
.section-head__ja {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  line-height: var(--leading-tight);
  margin-bottom: 16px;
}
@media (min-width: 768px) {
  .section-head__ja { font-size: var(--text-2xl); }
}
.section-head__line {
  width: 40px;
  height: 1px;
  background: var(--color-accent);
  margin-inline: auto;
}
.section-head__sub {
  margin-top: 20px;
  color: var(--color-text-sub);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}
.btn--primary:hover { background: var(--color-accent-dk); border-color: var(--color-accent-dk); }
.btn--outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.75);
}
.btn--outline:hover { background: rgba(255,255,255,0.12); }
.btn--block { display: block; text-align: center; width: 100%; }
.btn--lg { padding: 18px 56px; font-size: var(--text-base); }

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .fade-in { transition: none; opacity: 1; transform: none; }
  .fv__bg  { transition: none; }
}

/* ===========================
   Navigation
   =========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.2s;
}
.nav.scrolled { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav__logo {
  font-family: var(--font-en);
  font-size: 1.2rem;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text);
}
.nav__links {
  display: none;
  gap: 32px;
  align-items: center;
}
.nav__links a {
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-sub);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--color-accent); }
.nav__cta-btn {
  padding: 8px 20px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  color: var(--color-accent) !important;
  font-size: var(--text-sm);
}
.nav__cta-btn:hover { background: var(--color-accent); color: #fff !important; }

.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}
.nav__hamburger span {
  display: block;
  height: 1.5px;
  background: var(--color-text);
  transition: transform 0.3s, opacity 0.3s;
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* mobile menu open */
.nav__links.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 64px; left: 0; right: 0;
  background: #fff;
  padding: 24px 5%;
  gap: 20px;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__hamburger { display: none; }
}

/* ===========================
   SEC-01: ファーストビュー
   =========================== */
.fv {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}
.fv__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.04);
  transition: transform 8s ease-out;
}
.fv__bg.loaded { transform: scale(1); }
.fv__overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
}
.fv__content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding-inline: 24px;
  max-width: 760px;
}
.fv__sub {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  opacity: 0.85;
  margin-bottom: 20px;
}
.fv__catch {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: var(--leading-tight);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
@media (min-width: 768px) {
  .fv__catch { font-size: var(--text-4xl); }
}
.fv__lead {
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  opacity: 0.9;
  margin-bottom: 36px;
}
.fv__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.fv__badge {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  opacity: 0.7;
}

/* ===========================
   SEC-02: 共感
   =========================== */
.empathy__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 40px;
}
@media (min-width: 640px) {
  .empathy__grid { grid-template-columns: 1fr 1fr; }
}
.empathy__card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border: 1px solid var(--color-border);
}
.empathy__icon { font-size: 1.5rem; flex-shrink: 0; }
.empathy__card p {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text);
}
.empathy__closing {
  text-align: center;
  font-family: var(--font-serif);
  font-size: var(--text-base);
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
}

/* ===========================
   SEC-03: 選ばれる理由
   =========================== */
.reasons__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 768px) {
  .reasons__grid { grid-template-columns: repeat(3, 1fr); }
}
.reasons__card {
  padding: 36px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  transition: box-shadow 0.2s;
}
.reasons__card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.07); }
.reasons__num {
  font-family: var(--font-en);
  font-size: 2.5rem;
  color: var(--color-accent);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 16px;
}
.reasons__title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: 14px;
  line-height: var(--leading-tight);
}
.reasons__text {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
}

/* ===========================
   SEC-04: ギャラリー
   =========================== */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
@media (min-width: 768px) {
  .gallery__grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}
.gallery__item {
  overflow: hidden;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
}
.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery__item:hover img { transform: scale(1.05); }

/* ===========================
   SEC-05: 撮影の流れ
   =========================== */
.flow__steps {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
@media (min-width: 768px) {
  .flow__steps { flex-direction: row; align-items: flex-start; }
}
.flow__step {
  flex: 1;
  text-align: center;
  padding: 32px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}
.flow__step-num {
  font-family: var(--font-en);
  font-size: var(--text-xl);
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 16px;
  font-weight: 700;
}
.flow__step-title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: 12px;
}
.flow__step-text {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
}
.flow__arrow {
  font-size: var(--text-xl);
  color: var(--color-accent);
  opacity: 0.5;
  flex-shrink: 0;
  align-self: center;
  transform: rotate(90deg);
}
@media (min-width: 768px) {
  .flow__arrow { transform: rotate(0deg); }
}

/* ===========================
   SEC-06: 料金プラン
   =========================== */
.price__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
@media (min-width: 640px) {
  .price__cards { grid-template-columns: 1fr 1fr; }
}
.price__card {
  position: relative;
  padding: 40px 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}
.price__card--featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent);
}
.price__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: var(--text-xs);
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: var(--tracking-wide);
  white-space: nowrap;
}
.price__plan-name {
  font-family: var(--font-en);
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-wider);
  color: var(--color-text);
  margin-bottom: 8px;
}
.price__plan-catch {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  margin-bottom: 24px;
  line-height: var(--leading-normal);
}
.price__amount {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  color: var(--color-accent);
  margin-bottom: 24px;
  line-height: 1;
}
.price__tax { font-size: var(--text-sm); color: var(--color-text-sub); }
.price__list {
  border-top: 1px solid var(--color-border);
  margin-bottom: 28px;
}
.price__list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.price__label { color: var(--color-text-sub); }

.price__options {
  max-width: 560px;
  margin-inline: auto;
  text-align: center;
}
.price__options-title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: 20px;
  color: var(--color-text);
}
.price__options-table {
  width: 100%;
  border-collapse: collapse;
}
.price__options-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.price__options-table td:last-child {
  text-align: right;
  color: var(--color-accent);
  font-weight: 500;
}

/* ===========================
   SEC-07: FAQ
   =========================== */
.faq__list {
  max-width: 720px;
  margin-inline: auto;
}
.faq__item {
  border-bottom: 1px solid var(--color-border);
}
.faq__q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 4px;
  font-size: var(--text-base);
  color: var(--color-text);
  text-align: left;
  gap: 16px;
  transition: color 0.2s;
}
.faq__q:hover { color: var(--color-accent); }
.faq__icon {
  font-size: 1.4rem;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform 0.3s;
  line-height: 1;
}
.faq__q[aria-expanded="true"] .faq__icon { transform: rotate(45deg); }
.faq__a {
  padding: 0 4px 20px;
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
}

/* ===========================
   SEC-08: レビュー
   =========================== */
.reviews__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .reviews__grid { grid-template-columns: repeat(3, 1fr); }
}
.reviews__card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
}
.reviews__stars {
  color: var(--color-accent);
  font-size: var(--text-base);
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.reviews__text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-loose);
  margin-bottom: 20px;
}
.reviews__name {
  font-size: var(--text-xs);
  color: var(--color-text-sub);
  letter-spacing: var(--tracking-wide);
}

/* ===========================
   SEC-09: プロフィール
   =========================== */
.profile__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}
@media (min-width: 768px) {
  .profile__inner { grid-template-columns: 320px 1fr; gap: 64px; }
}
.profile__img {
  width: 100%;
  max-width: 320px;
  margin-inline: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.profile__en-name {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wider);
  color: var(--color-accent);
  margin-bottom: 8px;
}
.profile__ja-name {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: 24px;
}
.profile__text {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
  margin-bottom: 16px;
}
.profile__specs {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.profile__specs dt { color: var(--color-accent); white-space: nowrap; }
.profile__specs dd { color: var(--color-text-sub); }

/* ===========================
   SEC-10: 問い合わせ
   =========================== */
.contact__form {
  max-width: 640px;
  margin-inline: auto;
}
.contact__row { margin-bottom: 24px; }
.contact__label {
  display: block;
  font-size: var(--text-sm);
  margin-bottom: 8px;
  color: var(--color-text);
}
.required {
  font-size: var(--text-xs);
  background: var(--color-accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 2px;
  margin-left: 6px;
  vertical-align: middle;
}
.contact__input,
.contact__textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.contact__input:focus,
.contact__textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200,168,130,0.15);
}
.contact__textarea { resize: vertical; }
.contact__submit-wrap { text-align: center; margin-top: 32px; }
.contact__note {
  text-align: center;
  margin-top: 16px;
  font-size: var(--text-xs);
  color: var(--color-text-sub);
}

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding-block: 48px 32px;
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}
.footer__logo {
  font-family: var(--font-en);
  font-size: 1.1rem;
  letter-spacing: var(--tracking-wider);
  color: rgba(255,255,255,0.9);
}
.footer__nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer__nav a {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}
.footer__nav a:hover { color: var(--color-accent); }
.footer__copy {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}
.footer__disclaimer {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
}