/* Reset & Base Styles */
:root {
    --primary-color: #C38708;
    --secondary-color: #3A5A40;
    --text-color: #141414;
    --white: #FFFFFF;
}

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

body {
    font-family: "Noto Sans JP", sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Styles */
/* Header & Navigation */
.header {
    position: fixed;
    width: 100%;
    z-index: 1000;
    background: var(--white);
    padding: 8px 0;
}

.header-container {
    max-width: 1170px;
    margin: 0 auto;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 40px;
    padding: 0 20px;
    height: 60px;
}

/* Logo */
.logo {
    flex-shrink: 0;
}

.logo-img {
    height: 40px;
    width: auto;
}

/* Navigation Menu */
.nav-menu {
    margin-left: auto;
    display: flex;
    align-items: center;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    padding: 4px;
}

.nav-menu i {
    color: var(--primary-color);
    font-size: 16px;
}

/* Login Button */
.member-login {
    margin-top: 30px;
    margin-left: 30px;
}

.login-button {
    background: var(--primary-color);
    color: var(--white);
    padding: 18px 20px;
    border-radius: 5px;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-weight: 700;
    text-align: center;
    font-size: 12px;
    line-height: 1.4;
    writing-mode: vertical-rl;
    text-orientation: upright;
}

.login-sub {
    font-size: 10px;
    font-weight: 400;
}

/* メニューアイテムの縦書き */
.menu-item {
    writing-mode: vertical-rl;
    text-orientation: upright;
    display: flex;
    flex-direction: column;
    align-items: center;
    white-space: nowrap;
}

.menu-item i {
    margin-bottom: 4px;
    transform: rotate(90deg);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu, 
    .member-login {
        display: none;
    }

    .header-container {
        justify-content: space-between;
    }

    .mobile-menu-button {
        display: flex;
    }
}

/* Mobile Menu Button */
.mobile-menu-button {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-button span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-color);
    transition: transform 0.3s ease;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--white);
    transition: 0.3s ease;
    padding: 20px;
    z-index: 1001;
    box-shadow: -2px 0 5px rgba(0,0,0,0.1);
}

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

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.mobile-logo {
    height: 30px;
}

.close-menu {
    border: none;
    background: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

.mobile-menu-list {
    list-style: none;
}

.mobile-menu-list li {
    margin: 20px 0;
}

.mobile-menu-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 16px;
}

.mobile-menu-list i {
    color: var(--primary-color);
    width: 20px;
}

.mobile-login {
    margin-top: 30px;
    text-align: center;
}

.mobile-login-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
}

/* Hero Section */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #000;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(27, 22, 22, 0.58);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    padding: 20px;
    margin: 0 auto;
    text-align: center;
    color: var(--white);
}

.hero-content h1 {
    font-size: 2.7em;
    margin-bottom: 20px;
    font-weight: 400;
}

/* PC版のスタイル */
@media (min-width: 769px) {
    .video-background iframe {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 100vw;
        height: 100vh;
        transform: translate(-50%, -50%) scale(1.2);
        object-fit: cover;
    }
}

/* モバイル版のスタイル */
@media (max-width: 768px) {
    .video-background iframe {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 400vw; /* さらに広く */
        height: 400vh; /* さらに広く */
        transform: translate(-50%, -50%) scale(0.5); /* スケールを調整 */
    }

    .hero-content h1 {
        font-size: 1.95rem;
    }
}

/* より小さい画面向けの調整 */
@media (max-width: 375px) {
    .video-background iframe {
        width: 500vw; /* より広く */
        height: 500vh; /* より広く */
        transform: translate(-50%, -50%) scale(0.4); /* スケールをさらに調整 */
    }
}

.hero-content h2 {
    font-size: 3em;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content h3 {
    font-size: 1.7em;
    margin-bottom: 30px;
    font-weight: 400;
}

.hero-text {
    font-size: 1.2em;
    margin-bottom: 20px;
}

.cta-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 15px 40px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
    font-size: 18px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu, .member-login {
        display: none;
    }
    
    .mobile-menu-button {
        display: flex;
    }
    
    .hero-content h1 {
        font-size: 1.95rem;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-content h3 {
        font-size: 1.25rem;
    }
    
    .hero-text {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 12px 30px;
        font-size: 16px;
    }
}


/* Company Section Styles */
.company-section {
    padding: 60px 0;
    background-color: var(--white);
}

.container {
    max-width: 974px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.welcome-message {
    color: var(--primary-color);
    font-size: 1.25rem;
    text-align: center;
    margin-bottom: 30px;
}

.company-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 700;
    color: var(--text-color);
}

.company-description {
    text-align: center;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 40px;
    color: var(--text-color);
}

.founder-story {
    margin: 40px 0;
    text-align: left;
}

.founder-story p {
    margin-bottom: 25px;
    line-height: 1.8;
    color: var(--text-color);
}

.story-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 20px 40px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    margin-top: 20px;
    transition: background-color 0.3s ease;
}

.story-button:hover {
    background-color: #b77b07;
}

/* スマートフォン対応 */
@media (max-width: 768px) {
    .company-section {
        padding: 40px 0;
    }

    .container {
        padding: 0 15px;
    }

    .welcome-message {
        font-size: 1.1rem;
        margin-bottom: 20px;
    }

    .company-title {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }

    .company-description {
        font-size: 0.9rem;
        margin-bottom: 30px;
    }

    .founder-story p {
        font-size: 0.9rem;
        margin-bottom: 20px;
    }

    .founder-story br {
        display: none;
    }

    .story-button {
        padding: 15px 30px;
        font-size: 1rem;
        width: 100%;
    }
}


/* Newsletter Section */
.newsletter-section {
    background-color: #000;
    color: var(--white);
    padding: 80px 0;
}

.newsletter-signup {
    text-align: center;
    margin-bottom: 60px;
}

.pre-title {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    line-height: 1.4;
}

.description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    line-height: 1.8;
}

.profile-image {
    width: 380px;
    border-radius: 10px;
    margin: 30px auto;
}

.delivery-time {
    font-size: 0.9rem;
    margin-bottom: 30px;
}

.signup-form {
    max-width: 600px;
    margin: 0 auto;
}

.signup-form input {
    width: 100%;
    padding: 15px;
    border: 1px solid rgba(255,255,255,0.2);
    background: white;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 1rem;
}

.signup-form button {
    width: 100%;
    padding: 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s;
}

.signup-form button:hover {
    background-color: #b77b07;
}

/* Steps Container */
.steps-container {
    display: flex;
    gap: 40px;
    margin-top: 80px;
}

.step-item {
    flex: 1;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.step-image {
    width: 200px;
    flex-shrink: 0;
}

.step-image img {
    width: 100%;
    border-radius: 5px;
}

.step-content {
    flex: 1;
}

.step-number {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.step-title {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.step-description {
    font-size: 1rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.step-button {
    display: inline-block;
    padding: 15px 30px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    transition: background-color 0.3s;
}

.step-button:hover {
    background-color: #b77b07;
}

/* Responsive Design */
@media (max-width: 768px) {
    .newsletter-section {
        padding: 40px 0;
    }

    .title {
        font-size: 1.8rem;
    }

    .description {
        font-size: 1rem;
    }

    .profile-image {
        width: 230px;
    }

    .steps-container {
        flex-direction: column;
        gap: 40px;
    }

    .step-item {
        flex-direction: column;
        text-align: center;
    }

    .step-image {
        width: 230px;
        margin: 0 auto;
    }

    .step-button {
        width: 100%;
        text-align: center;
    }
}



.case-studies {
    padding: 80px 0;
    background-color: var(--white);
}

.container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-subtitle {
    color: var(--primary-color);
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    line-height: 1.4;
}

.content-wrapper {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
}

/* メインカードスタイル */
.main-card {
    flex: 2;
    background: #1a1a1a;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.card-content {
    display: flex;
    gap: 30px;
}

.image-content {
    flex: 1;
    max-width: 400px;
}

.image-content img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.text-content {
    flex: 1;
    padding: 30px;
    color: var(--white);
}

.card-title {
    font-size: 2rem;
    margin-bottom: 20px;
}

.card-description {
    font-size: 1rem;
    line-height: 1.8;
}

/* 問題解決ボックス */
.solution-box {
    flex: 1;
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.solution-box h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.solution-box ul {
    list-style: none;
    margin-bottom: 30px;
}

.solution-box li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.check {
    color: var(--primary-color);
}

.contact-btn {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--white);
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
    transition: background-color 0.3s;
    width: 100%;
    text-align: center;
}

/* Case Study Card Styles */
.case-study-card {
    background: var(--white);
    border-radius: 10px;
    border: 1px solid rgba(0, 123, 255, 0.1);
    box-shadow: 0 2px 15px rgba(0, 123, 255, 0.08);
    margin-top: 40px;
    padding: 0;
    overflow: hidden;
}

.case-content {
    display: flex;
    gap: 30px;
    padding: 30px;
}

.case-text {
    flex: 1;
}

.case-text h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.case-text p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.case-video {
    flex: 1;
    min-width: 400px;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 5px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* レスポンシブ対応 */
@media (max-width: 968px) {
    .case-content {
        flex-direction: column;
    }

    .case-video {
        min-width: 100%;
    }
}

@media (max-width: 768px) {
    .case-content {
        padding: 20px;
    }

    .case-text h3 {
        font-size: 1.3rem;
    }
}

/* レスポンシブデザインの修正 */
@media (max-width: 968px) {
    .content-wrapper {
        flex-direction: column;
        gap: 20px;
    }

    .main-card {
        width: 100%;
    }

    .card-content {
        flex-direction: column;
        gap: 20px;
    }

    .image-content {
        max-width: 100%;
        height: auto;
    }

    .text-content {
        padding: 20px;
    }

    .card-title {
        font-size: 1.5rem;
        text-align: center;
    }

    .card-description {
        text-align: left;
        font-size: 0.9rem;
    }

    .solution-box {
        width: 100%;
        margin-top: 0;
        padding: 20px;
    }

    .solution-box h4 {
        text-align: center;
    }

    .solution-box ul {
        margin-bottom: 20px;
    }

    .solution-box li {
        font-size: 0.9rem;
    }

    .contact-btn {
        font-size: 0.9rem;
        padding: 12px 20px;
    }
}

@media (max-width: 768px) {
    .case-studies {
        padding: 40px 0;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 15px;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }

    .main-card {
        border-radius: 10px;
    }

    .text-content {
        padding: 15px 15px 25px;
    }

    .solution-box {
        padding: 15px;
    }

    .case-content {
        padding: 15px;
    }

    .container {
        padding: 0 15px;
    }
}

/* 共通のコンテナスタイルの修正 */
.container {
    max-width: 1170px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

/* メインカードの画像サイズ調整 */
.image-content img {
    width: 100%;
    height: auto;
    display: block;
}



/* Services Section */
.services-section {
  padding: 80px 0;
  background-color: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.service-card {
  padding: 30px;
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-color);
}

.service-description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-color);
  margin-bottom: 30px;
  flex-grow: 1;
}

.service-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 700;
  text-align: center;
  transition: all 0.3s ease;
}

.service-button.primary {
  background: var(--primary-color);
  color: var(--white);
}

.service-button.secondary {
  background: var(--secondary-color);
  color: var(--white);
}

.service-button.primary:hover {
  background: #b77b07;
}

.service-button.secondary:hover {
  background: #2d4833;
}

@media (max-width: 968px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .services-section {
    padding: 40px 0;
  }

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

  .service-card {
    padding: 20px;
  }

  .service-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
  }

  .service-description {
    font-size: 0.9rem;
    margin-bottom: 20px;
  }

  .service-button {
    padding: 12px 20px;
    font-size: 0.9rem;
  }
}

.footer {
  background-color: #000;
  color: var(--white);
  padding: 80px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
}

.footer-logo {
  width: 225px;
  margin-bottom: 30px;
}

.footer-description {
  font-size: 0.9rem;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: 30px;
}

.footer-heading {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 30px;
  color: var(--primary-color);
}

.details-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.detail-item h4 {
  font-weight: 700;
  margin-bottom: 10px;
}

.detail-item p {
  font-size: 0.9rem;
  line-height: 1.6;
  opacity: 0.9;
}

@media (max-width: 968px) {
  .footer {
    padding: 60px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .footer {
    padding: 40px 0;
  }

  .footer-logo {
    width: 180px;
    margin-bottom: 20px;
  }

  .footer-description {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .footer-heading {
    font-size: 1.1rem;
    margin-bottom: 20px;
  }

  .detail-item {
    padding-right: 0;
  }

  .detail-item h4 {
    font-size: 0.95rem;
  }

  .detail-item p {
    font-size: 0.85rem;
  }
}

/* Container Style Override */
.footer .container {
  width: 80%;
  max-width: none;
  margin: 0 auto;
  padding: 0 20px;
}

@media (max-width: 768px) {
  .footer .container {
    width: 90%;
    padding: 0 15px;
  }
}


/* Footer Section  */
.footer {
    background-color: #000;
    color: var(--white);
    padding: 80px 0;
  }
  
  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
  }
  
  .footer-logo {
    width: 225px;
    margin-bottom: 30px;
  }
  
  .footer-description {
    font-size: 0.9rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 30px;
  }
  
  .footer-heading {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--primary-color);
  }
  
  .details-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  
  .detail-item h4 {
    font-weight: 700;
    margin-bottom: 10px;
  }
  
  .detail-item p {
    font-size: 0.9rem;
    line-height: 1.6;
    opacity: 0.9;
  }
  
  @media (max-width: 968px) {
    .footer {
      padding: 60px 0;
    }
  
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }
  }
  
  @media (max-width: 768px) {
    .footer {
      padding: 40px 0;
    }
  
    .footer-logo {
      width: 180px;
      margin-bottom: 20px;
    }
  
    .footer-description {
      font-size: 0.85rem;
      margin-bottom: 20px;
    }
  
    .footer-heading {
      font-size: 1.1rem;
      margin-bottom: 20px;
    }
  
    .detail-item {
      padding-right: 0;
    }
  
    .detail-item h4 {
      font-size: 0.95rem;
    }
  
    .detail-item p {
      font-size: 0.85rem;
    }
  }
  
  /* Container Style Override */
  .footer .container {
    width: 80%;
    max-width: none;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  @media (max-width: 768px) {
    .footer .container {
      width: 90%;
      padding: 0 15px;
    }
  }


  /* ニュースレターフォームのスタイル */
.form-group {
    position: relative;
    margin-bottom: 0px;
    width: 100%;
}

.message-box {
    display: none;
    padding: 10px;
    margin-top: 10px;
    border-radius: 4px;
    font-size: 14px;
    text-align: center;
}

.message-box.error {
    background-color: #ffe6e6;
    color: #dc3545;
    border: 1px solid #dc3545;
}

.message-box.success {
    background-color: #e6ffe6;
    color: #28a745;
    border: 1px solid #28a745;
}

.loading-spinner {
    display: inline-block;
}

.loading-spinner i {
    animation: spin 1s infinite linear;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ボタンのスタイル */
.submit-button {
    position: relative;
    width: 100%;
    padding: 12px 24px;
    font-weight: bold;
    background: #D2A70A;
    color: #0E0B0B;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.submit-button:hover {
    background: #c49a09;
}

.submit-button:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

/* 入力フィールドのスタイル */
.signup-form input[type="email"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.signup-form input[type="email"]:focus {
    border-color: #2196F3;
    outline: none;
}

/* 既存のstyle.cssに追加 */
.form-status {
    margin: 20px 0;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    display: none;
}

.status-success {
    background-color: rgba(40, 167, 69, 0.2);
    border: 1px solid #28a745;
    color: #fff;
}

.status-error {
    background-color: rgba(220, 53, 69, 0.2);
    border: 1px solid #dc3545;
    color: #fff;
}

.form-group {
    position: relative;
    margin-bottom: 0px;
}

.message-box {
    padding: 10px;
    margin-top: 10px;
    border-radius: 4px;
    display: none;
    font-size: 14px;
}

.message-box.success {
    background-color: rgba(40, 167, 69, 0.2);
    border: 1px solid #28a745;
    color: #fff;
}

.message-box.error {
    background-color: rgba(220, 53, 69, 0.2);
    border: 1px solid #dc3545;
    color: #fff;
}

.loading-spinner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.loading-spinner i {
    animation: spin 1s infinite linear;
}

.submit-button {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    background: #D2A70A !important;
    color: #0E0B0B !important;
}

.submit-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 送信成功時のアニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-box.success,
.message-box.error {
    animation: fadeInUp 0.3s ease forwards;
}