/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1E88E5;
  --primary-dark: #1565C0;
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
  --bg-light: #F9FAFB;
  --border: #E5E7EB;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

body {
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: var(--shadow);
  z-index: 1000;
  transition: all 0.3s;
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.header__logo {
  display: flex;
  align-items: center;
}

.header__logo img {
  height: 40px;
  width: auto;
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.header__nav-link {
  color: var(--text-secondary);
  transition: color 0.3s;
}

.header__nav-link:hover {
  color: var(--primary);
}

.header__cta {
  background: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  transition: all 0.3s;
}

.header__cta:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-lg);
}

.header__menu-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.header__menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 300px;
  height: 100vh;
  background: white;
  box-shadow: -4px 0 10px rgba(0,0,0,0.1);
  transition: right 0.3s;
  z-index: 1001;
  padding: 2rem;
}

.mobile-menu--active {
  right: 0;
}

.mobile-menu__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu__list {
  list-style: none;
  margin-top: 3rem;
}

.mobile-menu__item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

/* Hero */
.hero {
  padding: 7rem 0 4rem;
  background: linear-gradient(to bottom, white, var(--bg-light));
}

.hero__content {
  text-align: center;
  margin-bottom: 3rem;
}

.hero__title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.25;
}

/* スマホでは端末幅に応じて見出しを縮小し、意図した位置で改行する */
@media (max-width: 767px) {
  .hero__title {
    font-size: clamp(1.7rem, 7.4vw, 2.3rem);
  }
}
/* デスクトップでは「日程調整と／会議室予約を、」を1行にまとめる */
.hero__br-sp {
  display: inline;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero__cta {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s;
}

.hero__cta:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.hero__image {
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
}

.hero__image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

/* Features */
.features {
  padding: 4rem 0;
  background: white;
}

.features__grid {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

.features__more {
  margin-top: 3rem;
  text-align: center;
}

.features__more-btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border: 2px solid var(--primary);
  border-radius: 8px;
  color: var(--primary);
  font-weight: 600;
  transition: all 0.3s;
}

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

.feature-card {
  text-align: center;
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

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

.feature-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  color: var(--primary);
}

.feature-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card__description {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* スマホでは主な機能を 2列×3行 のコンパクト表示にする */
@media (max-width: 767px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 2rem;
  }
  .feature-card {
    padding: 1.25rem 0.85rem;
  }
  .feature-card__icon {
    width: 36px;
    height: 36px;
    margin-bottom: 0.6rem;
  }
  .feature-card__title {
    font-size: 1rem;
  }
  .feature-card__description {
    font-size: 0.8rem;
    line-height: 1.5;
  }
}

/* Pricing */
.pricing {
  padding: 4rem 0;
  background: var(--bg-light);
}

.pricing__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 2rem 0;
}

.pricing__toggle-label {
  font-weight: 500;
  color: var(--text-secondary);
}

.pricing__toggle-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 30px;
}

.pricing__toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.pricing__toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border);
  transition: 0.4s;
  border-radius: 30px;
}

.pricing__toggle-slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.4s;
  border-radius: 50%;
}

.pricing__toggle-switch input:checked + .pricing__toggle-slider {
  background-color: var(--primary);
}

.pricing__toggle-switch input:checked + .pricing__toggle-slider:before {
  transform: translateX(30px);
}

.pricing__grid {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

.pricing-card {
  background: white;
  border-radius: 12px;
  padding: 2rem 1.25rem;
  text-align: center;
  border: 2px solid transparent;
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

.pricing-card--featured {
  border-color: var(--primary);
  transform: scale(1.05);
}

.pricing-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px) scale(1.02);
}

.pricing-card--featured:hover {
  transform: translateY(-4px) scale(1.07);
}

.pricing-card__name {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.pricing-card__price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.pricing-card__price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-card__features {
  list-style: none;
  margin: 2rem 0;
  text-align: left;
}

.pricing-card__feature {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.3rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

.pricing-card__feature::before {
  content: '';
  position: absolute;
  left: 0.05rem;
  top: 0.8rem;
  width: 0.7rem;
  height: 0.38rem;
  border-left: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(-45deg);
}

.pricing-card__cta {
  display: inline-block;
  width: 100%;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.pricing-card--featured .pricing-card__cta {
  background: var(--primary);
  color: white;
}

.pricing-card__cta:hover {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow);
}

/* 横スワイプ用の矢印 (スマホのみ表示。カードに被せてスクロールを促す) */
.pricing__carousel {
  position: relative;
}

.pricing__arrow {
  display: none;
}

@keyframes arrowNudge {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50%      { transform: translateY(-50%) translateX(var(--nudge, 0)); }
}

/* スマホでは料金プランを横スクロール(スワイプ)で閲覧できるようにする */
@media (max-width: 767px) {
  .pricing__grid {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding: 0 1rem;
    -webkit-overflow-scrolling: touch;
    /* カードの hover 影が切れないよう上下に余白 */
    padding: 0.5rem 1rem 1.5rem;
    /* スクロールバーは非表示 (矢印とpeekで存在を示す) */
    scrollbar-width: none;
  }
  .pricing__grid::-webkit-scrollbar {
    display: none;
  }

  .pricing-card {
    flex: 0 0 88%;
    max-width: 340px;
    padding: 1.5rem 0.85rem;
    scroll-snap-align: center;
    /* 横スクロール内では出現アニメの初期非表示/変形を無効化して確実に表示 */
    opacity: 1;
    transform: none;
  }

  /* 項目を1行に収めるため、スマホでは余白を詰める */
  .pricing-card__feature {
    padding: 0.4rem 0 0.4rem 1.2rem;
    font-size: 0.85rem;
  }
  .pricing-card__feature::before {
    top: 0.7rem;
  }
  .pricing-card--featured {
    transform: none;
  }
  .pricing-card:hover,
  .pricing-card--featured:hover {
    transform: none;
  }

  /* 左右の矢印: カードの端に被せて表示 */
  .pricing__arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary);
    font-size: 1.6rem;
    line-height: 1;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
    cursor: pointer;
    animation: arrowNudge 1.4s ease-in-out infinite;
    transition: opacity 0.25s;
  }
  .pricing__arrow--prev {
    left: 2px;
    --nudge: -4px;
  }
  .pricing__arrow--next {
    right: 2px;
    --nudge: 4px;
  }
  /* スクロール端では対応する矢印を隠す (JSで is-hidden を付与) */
  .pricing__arrow.is-hidden {
    opacity: 0;
    pointer-events: none;
  }
}

/* Benefits */
.benefits {
  padding: 4rem 0;
  background: white;
}

.benefits__grid {
  display: grid;
  gap: 3rem;
  margin-top: 3rem;
}

.benefit {
  text-align: center;
  opacity: 0;
  transform: translateX(-20px);
}

.benefit__number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.benefit__label {
  font-size: 1.25rem;
  font-weight: 600;
}

/* Clients */
.clients {
  padding: 4rem 0;
  background: var(--bg-light);
  overflow: hidden;
}

.clients__slider {
  display: flex;
  animation: slide 20s linear infinite;
}

.clients__logo {
  flex: 0 0 200px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 2rem;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all 0.3s;
}

.clients__logo:hover {
  filter: grayscale(0%);
  opacity: 1;
}

@keyframes slide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* FAQ */
.faq {
  padding: 4rem 0;
  background: white;
}

.faq__list {
  margin-top: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.faq__item {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
}

.faq__question {
  width: 100%;
  text-align: left;
  padding: 1.5rem;
  background: white;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
}

.faq__question:hover {
  background: var(--bg-light);
}

.faq__question::after {
  content: '+';
  font-size: 1.5rem;
  transition: transform 0.3s;
}

.faq__item--active .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s;
}

.faq__answer-content {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-secondary);
}

.faq__item--active .faq__answer {
  max-height: 300px;
}

/* Footer */
.footer {
  padding: 3rem 0;
  background: var(--text-primary);
  color: white;
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  text-align: center;
}

.footer__links {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.footer__link {
  color: rgba(255,255,255,0.7);
  transition: color 0.3s;
}

.footer__link:hover {
  color: white;
}

.footer__social {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.footer__social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}

.footer__social-icon:hover {
  background: rgba(255,255,255,0.2);
}

.footer__copyright {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
}

/* スマホ用 追従フッターメニュー */
.mobile-cta {
  display: flex;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  background: white;
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
  padding-bottom: env(safe-area-inset-bottom);
}

.mobile-cta__item {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 0.5rem 0.25rem;
  font-size: 0.7rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  text-align: center;
}

.mobile-cta__item + .mobile-cta__item {
  border-left: 1px solid var(--border);
}

.mobile-cta__item svg {
  width: 22px;
  height: 22px;
}

.mobile-cta__item:first-child {
  color: var(--primary);
}

.mobile-cta__item:active {
  background: rgba(30, 136, 229, 0.06);
}

/* スマホでは追従メニューの高さぶん下に余白を確保 */
body {
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}

@media (min-width: 768px) {
  .mobile-cta {
    display: none;
  }
  body {
    padding-bottom: 0;
  }
}

/* Section Title */
.section__title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section__subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Animations */
.fade-in {
  animation: fadeIn 0.8s forwards;
}

.fade-in-up {
  animation: fadeInUp 0.8s forwards;
}

.fade-in-left {
  animation: fadeInLeft 0.8s forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Responsive */
@media (min-width: 768px) {
  .header__nav {
    display: block;
  }
  
  .header__menu-toggle {
    display: none;
  }
  
  .hero__title {
    font-size: 3.5rem;
  }

  .hero__br-sp {
    display: none;
  }

  .hero__content {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .features__grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
  
  .pricing__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .benefits__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer__content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}
/* ===== 追加スタイル (PHP版LP用) ===== */

/* ヒーロー下の注記 */
.hero__note {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.hero__note a {
  color: var(--primary);
  text-decoration: underline;
}

/* 料金トグル下の注記 */
.pricing__note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* ===== 下層ページ共通 (機能一覧・規約系) ===== */

/* ページヒーロー */
.page-hero {
  padding: 7rem 0 3rem;
  background: linear-gradient(to bottom, white, var(--bg-light));
  text-align: center;
}

.page-hero__title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.page-hero__lead {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* 機能一覧 */
.feature-sections {
  padding: 3rem 0 4rem;
  background: white;
}

.feature-section {
  display: grid;
  gap: 1.25rem;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.feature-section__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.feature-section__icon {
  width: 36px;
  height: 36px;
  color: var(--primary);
  flex-shrink: 0;
}

.feature-section__title {
  font-size: 1.35rem;
  font-weight: 700;
}

.feature-section__plan {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.75rem;
  white-space: nowrap;
}

.feature-section__plan--all {
  color: var(--primary);
  border-color: var(--primary);
}

.feature-section__description {
  color: var(--text-secondary);
}

.feature-section__list {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.feature-section__list li {
  position: relative;
  padding-left: 1.6em;
  font-size: 0.95rem;
}

.feature-section__list li::before {
  content: '✓';
  position: absolute;
  left: 0.25em;
  color: var(--primary);
  font-weight: 700;
}

.feature-sections__note {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-align: center;
  margin-top: 2rem;
}

.feature-sections__note a {
  color: var(--primary);
  text-decoration: underline;
}

@media (min-width: 768px) {
  .feature-section {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* CTA帯 */
.page-cta {
  padding: 4rem 0;
  background: var(--bg-light);
  text-align: center;
}

.page-cta .section__subtitle {
  margin-bottom: 2rem;
}

/* 規約系ドキュメント */
.doc {
  padding: 2rem 0 4rem;
  background: white;
}

.doc .container {
  max-width: 800px;
}

.doc__intro {
  margin-bottom: 2rem;
}

.doc h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2.5rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border);
}

.doc p {
  margin-bottom: 0.75rem;
}

.doc ol,
.doc ul {
  margin: 0 0 0.75rem 1.5rem;
}

.doc li {
  margin-bottom: 0.4rem;
}

.doc li > ol {
  margin-top: 0.4rem;
}

.doc a {
  color: var(--primary);
  text-decoration: underline;
}

.doc__date {
  margin-top: 3rem;
  color: var(--text-secondary);
}

.doc__signature {
  color: var(--text-secondary);
}

/* ============================================================
   お問い合わせフォーム (公開・未ログイン向け /contact-us)
   ============================================================ */
.contact-form {
  max-width: 640px;
  margin: 1.5rem 0 0;
}

.contact-field {
  margin-bottom: 1.25rem;
}

.contact-field label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.contact-field__req {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  background: #FEE2E2;
  color: #B91C1C;
  font-size: 0.7rem;
  font-weight: 600;
  vertical-align: middle;
}

.contact-field__opt {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  background: #E5E7EB;
  color: #4B5563;
  font-size: 0.7rem;
  font-weight: 600;
  vertical-align: middle;
}

.contact-field__label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.contact-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
}

.contact-field label.contact-check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.4rem;
  font-weight: 500;
  cursor: pointer;
}

.contact-check input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  padding: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.contact-field input,
.contact-field select,
.contact-field textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-primary);
  background: white;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-field textarea {
  resize: vertical;
  line-height: 1.6;
}

.contact-field input:focus,
.contact-field select:focus,
.contact-field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.15);
}

.contact-form__note {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin: 0 0 1.25rem;
}

.contact-form__actions {
  text-align: center;
}

.contact-form__actions .btn--primary {
  display: inline-block;
  min-width: 200px;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
}

.contact-form__actions .btn--primary:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-lg);
}

/* フラッシュメッセージ */
.form-alert {
  margin-bottom: 1.5rem;
  padding: 0.9rem 1.1rem;
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.form-alert--success {
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #065F46;
}

.form-alert--error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}