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

/* ========================================
   Tablet (768px ~ 1023px)
   ======================================== */
@media (max-width: 1023px) {
  /* About Section */
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  /* Services Grid */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Portfolio Grid */
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Contact Section */
  .contact-content {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .footer-nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ========================================
   Mobile (~767px)
   ======================================== */
@media (max-width: 767px) {
  /* Base */
  :root {
    --spacing-3xl: 4rem;
    --spacing-2xl: 3rem;
  }

  body {
    font-size: 14px;
  }

  section {
    padding: var(--spacing-2xl) 0;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  /* Header */
  .header-content {
    padding: var(--spacing-sm) 0;
  }

  .logo a {
    font-size: 1.25rem;
  }

  /* ナビゲーション - ハンバーガーメニュー */
  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-md) 0;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 0;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-link:hover {
    background-color: var(--bg-gray);
  }

  /* ハンバーガーメニューアニメーション */
  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  /* Hero Section */
  .hero {
    min-height: 80vh;
    padding: var(--spacing-2xl) var(--spacing-md);
    margin-top: 60px;
    text-align: left;
  }

  .hero-content {
    text-align: left;
  }

  .hero-title {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  .hero-subtitle {
    font-size: clamp(1rem, 4.5vw, 1.25rem);
  }

  .hero-description {
    font-size: clamp(0.8rem, 3.8vw, 1rem);
  }

  .hero-description br {
    display: none;
  }

  /* Section Titles */
  .section-title {
    font-size: 2rem;
  }

  .section-description {
    font-size: 1rem;
  }

  /* About Section */
  .about-content {
    grid-template-columns: 1fr;
  }

  .info-table th {
    width: 35%;
    font-size: 0.875rem;
  }

  .info-table th,
  .info-table td {
    padding: var(--spacing-sm);
  }

  /* Services Section */
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .service-card {
    padding: var(--spacing-lg);
  }

  .service-title {
    font-size: 1.25rem;
  }

  /* Portfolio Section */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .portfolio-image {
    height: 180px;
  }

  .portfolio-content {
    padding: var(--spacing-md);
  }

  .portfolio-title {
    font-size: 1.125rem;
  }

  /* Contact Section */
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .contact-form {
    padding: var(--spacing-lg);
  }

  .form-group {
    margin-bottom: var(--spacing-md);
  }

  .btn-large {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
  }

  /* Footer */
  .footer {
    padding: var(--spacing-lg) 0 var(--spacing-sm) 0;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }

  .footer-nav {
    width: 100%;
  }

  .footer-nav ul {
    flex-direction: column;
    gap: var(--spacing-xs);
    align-items: stretch;
  }

  .footer-nav li {
    text-align: center;
  }

  .footer-bottom {
    font-size: 0.75rem;
  }
}

/* ========================================
   Small Mobile (~480px)
   ======================================== */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .service-icon {
    width: 40px;
    height: 40px;
  }

  .info-table th,
  .info-table td {
    font-size: 0.875rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* ========================================
   Landscape Orientation (Mobile)
   ======================================== */
@media (max-height: 600px) and (orientation: landscape) {
  .hero {
    min-height: 100vh;
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .hero-description {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .header,
  .hamburger,
  .hero,
  .contact,
  .footer {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
  }

  section {
    page-break-inside: avoid;
    padding: 1rem 0;
  }

  .section-title {
    color: #000;
  }

  a {
    text-decoration: underline;
    color: #000;
  }
}