/* ============================================
   ACTstage,LLC. — Shared Stylesheet
   ============================================ */

:root {
  --color-bg: #f5f4f1;
  --color-bg-alt: #ffffff;
  --color-ink: #1a1a1a;
  --color-ink-soft: #3a3a3a;
  --color-muted: #6e6e6e;
  --color-line: #d8d6d1;
  --color-line-soft: #e8e6e1;
  --color-accent: #2a2a2a;
  --color-error: #8b2a2a;
  --font-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
}

a { color: inherit; }

/* ====== Header ====== */
.site-header {
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(245, 244, 241, 0.92);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 22px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}
.logo {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-ink);
  text-decoration: none;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.logo img {
  height: 60px;
  width: auto;
  display: block;
  /* ロゴ画像がモノクロサイトに馴染むよう、わずかに調整 */
}
.logo .logo-text {
  display: none; /* ロゴ画像表示時はテキスト非表示 */
}
.logo.no-image .logo-text {
  display: block; /* ロゴ画像が無い場合のフォールバック */
}
.logo .logo-sub {
  display: none; /* ロゴ画像のみ表示時はサブテキスト非表示 */
}
.logo.no-image .logo-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: 9px;
  letter-spacing: 0.4em;
  color: var(--color-muted);
  margin-top: 6px;
  font-weight: 400;
}

/* フッターのロゴはサイズを少し大きく */
.footer-brand .logo img {
  height: 72px;
}

/* Nav */
.global-nav { display: flex; align-items: center; }
.global-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 36px;
}
.global-nav a {
  position: relative;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-decoration: none;
  color: var(--color-ink-soft);
  padding: 4px 0;
  transition: color var(--transition);
}
.global-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--color-ink);
  transition: width var(--transition);
}
.global-nav a:hover,
.global-nav a.is-current {
  color: var(--color-ink);
}
.global-nav a:hover::after,
.global-nav a.is-current::after {
  width: 100%;
}
.global-nav .en {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-top: 2px;
  text-align: center;
}

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 36px;
  height: 36px;
  position: relative;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-ink);
  margin: 5px auto;
  transition: var(--transition);
}
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ====== Page header (hero) ====== */
.page-hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 100px 40px 70px;
  border-bottom: 1px solid var(--color-line);
  position: relative;
}
.page-hero::before {
  content: attr(data-number);
  position: absolute;
  top: 60px;
  right: 40px;
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--color-muted);
}
.eyebrow {
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 28px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--color-ink);
  vertical-align: middle;
  margin-right: 14px;
}
.page-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.04em;
  margin: 0 0 20px;
  color: var(--color-ink);
}
.page-title .en {
  display: block;
  font-family: var(--font-display);
  font-size: 0.42em;
  font-style: italic;
  color: var(--color-muted);
  letter-spacing: 0.1em;
  margin-top: 18px;
  font-weight: 400;
}
.page-lead {
  max-width: 680px;
  font-size: 15px;
  color: var(--color-ink-soft);
  line-height: 2;
  margin-top: 40px;
}
.breadcrumb {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--color-muted);
  margin-bottom: 32px;
}
.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--color-ink); }
.breadcrumb .sep {
  margin: 0 12px;
  color: var(--color-line);
}

/* ====== Section common ====== */
.section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 100px 40px;
}
.section-label {
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin: 0 0 60px;
  line-height: 1.5;
}
.section-title .en {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.5em;
  color: var(--color-muted);
  letter-spacing: 0.1em;
  margin-top: 12px;
  font-weight: 400;
}

/* ====== Buttons ====== */
.btn {
  display: inline-block;
  padding: 18px 56px;
  background: var(--color-ink);
  color: var(--color-bg-alt);
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
}
.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-bg-alt);
}

/* ====== Footer ====== */
.site-footer {
  border-top: 1px solid var(--color-line);
  margin-top: 60px;
  background: var(--color-bg);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 40px 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--color-line-soft);
}
.footer-brand .logo { font-size: 26px; }
.footer-tagline {
  margin-top: 24px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 2;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--color-muted);
  margin: 0 0 20px;
  font-weight: 500;
  text-transform: uppercase;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line-soft);
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  font-size: 13px;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--color-ink); }
.footer-col p {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.9;
}
.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--color-muted);
  letter-spacing: 0.1em;
}
.footer-bottom .credit {
  font-family: var(--font-display);
  font-style: italic;
  letter-spacing: 0.15em;
}

/* ====== Form (shared) ====== */
.form-wrap {
  background: var(--color-bg-alt);
  padding: 56px 60px;
  border: 1px solid var(--color-line);
}
.form-intro {
  padding-bottom: 32px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-line-soft);
}
.form-intro h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  margin: 0 0 8px;
  letter-spacing: 0.05em;
}
.form-intro p {
  margin: 0;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.8;
}
.field { margin-bottom: 32px; }
.field-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}
.field-label .label {
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--color-ink);
  font-weight: 500;
}
.required {
  display: inline-block;
  margin-left: 10px;
  font-size: 10px;
  padding: 2px 8px;
  background: var(--color-ink);
  color: var(--color-bg-alt);
  letter-spacing: 0.15em;
  vertical-align: middle;
}
.optional {
  display: inline-block;
  margin-left: 10px;
  font-size: 10px;
  padding: 2px 8px;
  border: 1px solid var(--color-line);
  color: var(--color-muted);
  letter-spacing: 0.15em;
  vertical-align: middle;
}
.field-hint {
  font-size: 11px;
  color: var(--color-muted);
  letter-spacing: 0.05em;
}
input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 14px 0;
  border: none;
  border-bottom: 1px solid var(--color-line);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-ink);
  transition: border-color var(--transition);
  border-radius: 0;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-bottom-color: var(--color-ink);
}
input::placeholder, textarea::placeholder {
  color: #b8b6b1;
  font-size: 14px;
}
textarea {
  resize: vertical;
  min-height: 160px;
  line-height: 1.8;
  padding-top: 14px;
}
.submit-area {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--color-line-soft);
  text-align: right;
}
.submit-note {
  margin-top: 14px;
  font-size: 11px;
  color: var(--color-muted);
  letter-spacing: 0.05em;
}

/* === Form submission state === */
.form-wrap.is-sending { opacity: 0.6; pointer-events: none; }
.form-wrap.is-sending button[type="submit"] {
  background: var(--color-muted);
  cursor: not-allowed;
}
.form-message {
  display: none;
  padding: 36px 32px;
  text-align: center;
  margin-top: 28px;
  border: 1px solid var(--color-line);
}
.form-message.is-visible { display: block; }
.form-message.is-success {
  background: var(--color-bg);
  border-color: var(--color-ink);
}
.form-message.is-error {
  background: #fdf5f5;
  border-color: var(--color-error);
}
.form-message h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  margin: 0 0 10px;
  letter-spacing: 0.05em;
}
.form-message.is-success h3 { color: var(--color-ink); }
.form-message.is-error h3 { color: var(--color-error); }
.form-message p {
  margin: 0;
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.9;
}
.form-message .check-mark {
  display: block;
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 1px solid var(--color-ink);
  position: relative;
}
.form-message .check-mark::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 12px;
  width: 12px;
  height: 22px;
  border: solid var(--color-ink);
  border-width: 0 1px 1px 0;
  transform: rotate(45deg);
}

/* ====== Responsive ====== */
@media (max-width: 960px) {
  .header-inner { padding: 18px 24px; }
  .logo img { height: 48px; }
  .footer-brand .logo img { height: 60px; }
  .menu-toggle { display: block; }
  .global-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-bg);
    transform: translateX(100%);
    transition: transform var(--transition);
    align-items: center;
    justify-content: center;
    padding-top: 80px;
  }
  .global-nav.is-open { transform: translateX(0); }
  .global-nav ul {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }
  .global-nav a { font-size: 14px; }
  .menu-toggle { z-index: 100; position: relative; }
  .page-hero { padding: 60px 24px 50px; }
  .page-hero::before { display: none; }
  .section { padding: 70px 24px; }
  .form-wrap { padding: 36px 24px; }
  .submit-area { text-align: stretch; }
  .submit-area .btn { width: 100%; padding: 18px; }
  .footer-inner { padding: 60px 24px 30px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 40px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
}