/* ============================================
   ゆきえピアノ教室 - メインスタイルシート
   ============================================ */

:root {
  --color-primary: #c2185b;
  --color-primary-light: #f8bbd0;
  --color-primary-dark: #880e4f;
  --color-accent: #f06292;
  --color-bg: #fffaf5;
  --color-bg-card: #ffffff;
  --color-bg-section: #fff5f0;
  --color-text: #3e2723;
  --color-text-light: #6d4c41;
  --color-border: #f0e0d8;
  --color-success: #2e7d32;
  --color-error: #c62828;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', serif;
  --max-width: 1100px;
  --header-height: auto;
}

/* Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-primary-dark);
}

ul {
  list-style: none;
}

/* ============================================
   Header
   ============================================ */

.site-header {
  background: var(--color-bg-card);
  border-bottom: 3px solid var(--color-primary-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.logo img {
  height: 50px;
  width: auto;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
}

.tagline {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-right: auto;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  position: absolute;
  left: 0;
  transition: all 0.3s;
}

.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 11px; }
.menu-toggle span:nth-child(3) { top: 22px; }

.main-nav ul {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.main-nav a {
  display: block;
  padding: 6px 14px;
  font-size: 0.9rem;
  color: var(--color-text);
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--color-primary);
  color: #fff;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-image {
  width: 100%;
  max-height: 400px;
  overflow: hidden;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.hero-image.no-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image.no-image::after {
  content: 'ゆきえピアノ教室';
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-primary-dark);
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.home-content,
.page-content {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
}

.main-column {
  min-width: 0;
}

/* ============================================
   Breadcrumb
   ============================================ */

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  padding: 8px 0;
}

.breadcrumb a {
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb span {
  margin: 0 6px;
}

/* ============================================
   Section & Page Titles
   ============================================ */

.page-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-primary-dark);
  padding-bottom: 12px;
  margin-bottom: 28px;
  border-bottom: 2px solid var(--color-primary-light);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-primary-dark);
  padding-bottom: 8px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--color-primary-light);
}

.section {
  margin-bottom: 48px;
}

/* ============================================
   News
   ============================================ */

.news-list {
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-item dt {
  font-size: 0.85rem;
  color: var(--color-text-light);
  white-space: nowrap;
  min-width: 90px;
}

.news-item dd {
  flex: 1;
}

.news-list-full .news-item dd p {
  margin-top: 4px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.more-link {
  text-align: right;
  margin-top: 12px;
}

/* ============================================
   Blog Cards
   ============================================ */

.blog-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.2s;
}

.blog-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.blog-card-thumb img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.blog-card-body {
  padding: 16px;
}

.blog-card-body time {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.blog-card-body h3 {
  font-size: 1.05rem;
  margin: 4px 0 8px;
}

.blog-card-body h3 a {
  color: var(--color-text);
}

.blog-card-body h3 a:hover {
  color: var(--color-primary);
}

.blog-card-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 8px;
}

.read-more {
  font-size: 0.85rem;
  font-weight: 500;
}

/* Blog List */
.blog-list-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.blog-list-thumb {
  flex-shrink: 0;
  width: 180px;
}

.blog-list-thumb img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 4px;
}

.blog-list-body {
  flex: 1;
}

.blog-list-body time {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.blog-list-body h2 {
  font-size: 1.15rem;
  margin: 4px 0 8px;
}

.blog-list-body h2 a {
  color: var(--color-text);
}

.blog-list-body h2 a:hover {
  color: var(--color-primary);
}

.blog-list-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

/* Blog Post */
.blog-post-header time {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.blog-post-thumbnail {
  margin: 20px 0;
}

.blog-post-thumbnail img {
  border-radius: 8px;
}

.blog-post-content {
  line-height: 2;
  margin-bottom: 32px;
}

.blog-post-content p {
  margin-bottom: 16px;
}

.blog-post-content img {
  border-radius: 4px;
  margin: 16px 0;
}

.blog-post-footer {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Sidebar
   ============================================ */

.sidebar {
  align-self: start;
  position: sticky;
  top: 100px;
}

.widget {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.widget h3 {
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

.recent-posts-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.recent-posts-list li:last-child {
  border-bottom: none;
}

.recent-posts-list a {
  color: var(--color-text);
}

.recent-posts-list a:hover {
  color: var(--color-primary);
}

/* ============================================
   Course
   ============================================ */

.course-list {
  display: grid;
  gap: 24px;
  margin-bottom: 32px;
}

.course-item {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  border-left: 4px solid var(--color-primary);
}

.course-item h2 {
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.course-item p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.course-note {
  background: var(--color-bg-section);
  border-radius: 8px;
  padding: 20px;
}

.course-note p {
  font-size: 0.95rem;
}

/* ============================================
   Fee Table
   ============================================ */

.fee-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 32px;
  background: var(--color-bg-card);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.fee-table th,
.fee-table td {
  padding: 14px 20px;
  text-align: left;
}

.fee-table thead {
  background: var(--color-primary);
  color: #fff;
}

.fee-table th {
  font-weight: 500;
  font-size: 0.9rem;
}

.fee-table tbody tr {
  border-bottom: 1px solid var(--color-border);
}

.fee-table tbody tr:last-child {
  border-bottom: none;
}

.fee-table tbody tr:hover {
  background: var(--color-bg-section);
}

.fee-notes {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.fee-notes h2 {
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.fee-notes ul {
  list-style: disc;
  padding-left: 20px;
}

.fee-notes li {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

/* ============================================
   Profile
   ============================================ */

.profile-section {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 32px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.profile-header h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-primary-dark);
  margin-bottom: 20px;
}

.profile-role {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-light);
  margin-left: 8px;
}

.profile-body p {
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.profile-body h3 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin: 24px 0 12px;
}

.competition-list {
  list-style: none;
}

.competition-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.competition-list li:last-child {
  border-bottom: none;
}

.competition-list .year {
  font-weight: 700;
  color: var(--color-primary);
  margin-right: 8px;
}

/* ============================================
   Events
   ============================================ */

.event-item {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.event-item h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.event-item p {
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.event-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.gallery-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 4px;
}

/* ============================================
   Access
   ============================================ */

.access-info {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.access-info h2 {
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
}

.access-list {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 12px;
}

.access-list li {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.access-note {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.access-map {
  margin-bottom: 24px;
}

.access-map iframe {
  border-radius: 8px;
  width: 100%;
}

.map-note {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 8px;
}

/* ============================================
   Contact Form
   ============================================ */

.contact-lead {
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.contact-form,
.login-form,
.admin-form {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

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

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.form-group label small {
  font-weight: 400;
  color: var(--color-text-light);
  margin-left: 8px;
}

.required {
  color: var(--color-error);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  transition: border-color 0.2s;
}

.form-group-short input[type="text"],
.form-group input[type="email"] {
  max-width: 400px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(194, 24, 91, 0.1);
}

.form-confirm {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.form-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-block;
  padding: 10px 24px;
  border: none;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.btn-loading {
  opacity: 0.7;
  cursor: wait;
}

.btn-loading::after {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-left: 8px;
  border: 2px solid #fff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}

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

.btn-secondary {
  background: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: #e0d0c8;
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-error);
  color: #fff;
}

.btn-danger:hover {
  background: #b71c1c;
  color: #fff;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* ============================================
   Alerts
   ============================================ */

.alert {
  padding: 14px 20px;
  border-radius: 4px;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.alert-success {
  background: #e8f5e9;
  color: var(--color-success);
  border: 1px solid #a5d6a7;
}

.alert-error {
  background: #ffebee;
  color: var(--color-error);
  border: 1px solid #ef9a9a;
}

/* ============================================
   Login Box
   ============================================ */

.login-box {
  max-width: 520px;
}

.login-box p {
  margin-bottom: 16px;
  font-size: 0.95rem;
}

/* ============================================
   Student Page
   ============================================ */

.student-content {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.student-section {
  margin: 24px 0;
  padding: 20px;
  background: var(--color-bg-section);
  border-radius: 8px;
}

.student-section h2 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.google-calendar,
.google-form {
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
  margin-top: 12px;
}

.google-calendar iframe,
.google-form iframe {
  max-width: 100%;
}

.student-logout {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Admin
   ============================================ */

.admin-content {
  grid-column: 1 / -1;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.admin-section {
  background: var(--color-bg-card);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 28px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.admin-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.admin-section-header h2 {
  font-size: 1.15rem;
  color: var(--color-primary-dark);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.admin-table th {
  font-weight: 500;
  color: var(--color-text-light);
}

.admin-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.inline-form {
  display: inline;
}

/* ============================================
   Error Page
   ============================================ */

.error-page {
  text-align: center;
  padding: 60px 0;
}

.error-page p {
  margin: 16px 0 32px;
  color: var(--color-text-light);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 40px 16px 24px;
  margin-top: 48px;
  position: relative;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-nav {
  margin-bottom: 24px;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 4px;
  transition: background 0.2s;
}

.footer-nav a:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.footer-info {
  text-align: center;
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.copyright {
  font-size: 0.8rem;
  opacity: 0.7;
}

.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-primary);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: background 0.2s, opacity 0.2s;
  opacity: 0.8;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  color: #fff;
  opacity: 1;
}

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

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .tagline {
    width: 100%;
    order: 3;
    margin: 0;
    display: none;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .main-nav {
    display: none;
    width: 100%;
    order: 4;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav a {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .home-content,
  .page-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-image {
    max-height: 240px;
  }

  .page-title {
    font-size: 1.4rem;
  }

  .blog-cards {
    grid-template-columns: 1fr;
  }

  .blog-list-item {
    flex-direction: column;
  }

  .blog-list-thumb {
    width: 100%;
  }

  .blog-list-thumb img {
    height: 200px;
  }

  .event-gallery {
    grid-template-columns: 1fr;
  }

  .gallery-item img {
    height: auto;
  }

  .fee-table th,
  .fee-table td {
    padding: 10px 12px;
    font-size: 0.85rem;
  }

  .news-item {
    flex-direction: column;
    gap: 4px;
  }

  .admin-actions {
    flex-direction: column;
    gap: 4px;
  }

  .student-content {
    margin-left: -16px;
    margin-right: -16px;
  }

  .student-content .student-section h2 {
    padding-left: 16px;
  }

  .google-calendar {
    border-radius: 0;
  }

  .student-logout {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 480px) {
  .profile-section {
    padding: 20px;
  }

  .event-item {
    padding: 20px;
  }

  .contact-form,
  .admin-form {
    padding: 20px;
  }
}