/* 宿スタ - GitHub Pages 共通スタイル */
:root {
  --green: #4CAF50;
  --dark-green: #388E3C;
  --light-green: #E8F5E9;
  --off-white: #FFFAF0;
  --black: #11181C;
  --gray: #687076;
  --light-gray: #F5F5F5;
  --border: #E5E7EB;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--black);
  background: var(--off-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  background: linear-gradient(135deg, var(--green), var(--dark-green));
  padding: 40px 0 32px;
  text-align: center;
}

header .logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: white;
}

header .logo-icon {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

header .logo-text {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

header .page-title {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  font-weight: 400;
  margin-top: 8px;
}

/* Navigation */
nav {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

nav .container {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

nav a {
  color: var(--gray);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.2s;
}

nav a:hover,
nav a.active {
  color: var(--green);
  background: var(--light-green);
}

/* Main Content */
main {
  padding: 40px 0 80px;
}

h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--black);
}

h2 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--black);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--light-green);
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--dark-green);
}

p {
  margin-bottom: 16px;
  color: var(--black);
  font-size: 15px;
}

ul, ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
  font-size: 15px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--light-green);
  font-weight: 600;
  color: var(--dark-green);
}

tr:hover td {
  background: var(--light-gray);
}

/* Cards */
.card {
  background: white;
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.card h3 {
  margin-top: 0;
}

/* FAQ */
.faq-item {
  background: white;
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}

.faq-item .question {
  font-weight: 600;
  color: var(--dark-green);
  margin-bottom: 8px;
  font-size: 15px;
}

.faq-item .answer {
  color: var(--gray);
  font-size: 14px;
  line-height: 1.7;
}

/* Contact Form */
.contact-section {
  background: white;
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--black);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--green);
  color: white;
  border: none;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn:hover {
  background: var(--dark-green);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

/* Badge */
.badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--light-green);
  color: var(--dark-green);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

/* Update date */
.update-date {
  color: var(--gray);
  font-size: 13px;
  margin-bottom: 32px;
}

/* Footer */
footer {
  background: var(--light-gray);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}

footer p {
  color: var(--gray);
  font-size: 13px;
  margin-bottom: 8px;
}

footer a {
  color: var(--green);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer .footer-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 600px) {
  header {
    padding: 28px 0 24px;
  }

  header .logo-text {
    font-size: 24px;
  }

  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 18px;
  }

  .card {
    padding: 20px;
  }

  .contact-section {
    padding: 24px;
  }
}