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

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #f0f2f5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
header {
    background: #101d2c;
    color: #e0e0e0;
    padding: 0.8rem 0;
    border-bottom: #0b141e 3px solid;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    flex-wrap: wrap; 
}

header h1 {
    font-size: 1.6rem;
    margin: 0;
    font-weight: 500;
    white-space: nowrap;
    padding: 5px 0;
}
header a.logo-link {
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s ease;
    min-width: 0; /* flexアイテムが内容より縮むことを許可 */
}
header a.logo-link:hover {
    color: #fff;
}

/* Main Navigation */
.main-nav {
    margin-left: auto;
}

.main-nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    align-items: center;
    margin: 0;
}

.main-nav ul li {
    margin-left: 10px;
}

.main-nav ul li a {
    color: #c0c0c0;
    text-decoration: none;
    font-size: 0.85rem;
    padding: 8px 12px;
    border-radius: 4px;
    transition: background-color 0.3s ease, color 0.3s ease;
    white-space: nowrap;
    display: block;
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
    background-color: #1f3a55;
    color: #fff;
}

/* Mobile Navigation Toggle */
.mobile-nav-toggle-cb {
    display: none;
}

.mobile-nav-toggle-label {
    display: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
    flex-shrink: 0; /* ハンバーガーメニューは縮まないようにする */
}

.mobile-nav-toggle-label span,
.mobile-nav-toggle-label span::before,
.mobile-nav-toggle-label span::after {
    display: block;
    background-color: #e0e0e0;
    height: 3px;
    width: 25px;
    border-radius: 3px;
    position: relative;
    transition: all 0.3s ease-in-out;
}

.mobile-nav-toggle-label span::before,
.mobile-nav-toggle-label span::after {
    content: '';
    position: absolute;
}

.mobile-nav-toggle-label span::before {
    top: -8px;
}

.mobile-nav-toggle-label span::after {
    top: 8px;
}

/* Main Content */
main {
    flex-grow: 1;
    padding: 25px 0;
}

article {
    background: #fff;
    padding: 25px;
    margin: 20px auto;
    border-radius: 6px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    width: 90%;
    max-width: 900px;
}

article h2 {
    color: #101d2c;
    margin-top: 20px;
    margin-bottom: 25px;
    font-size: 1.9rem;
    border-bottom: 3px solid #e8eaed;
    padding-bottom: 12px;
}

article h3 {
    color: #1f3a55;
    margin-top: 35px;
    margin-bottom: 18px;
    font-size: 1.4rem;
}

article p {
    margin-bottom: 18px;
    text-align: justify;
    color: #444;
}

article section {
    margin-bottom: 35px;
}

/* Footer */
footer {
    background: #101d2c;
    color: #a0a0a0;
    text-align: center;
    padding: 1.2rem 0;
    font-size: 0.85rem;
}

/* Ad Placeholders */
.ad-placeholder {
    background-color: #f0f0f0;
    border: 1px dashed #c0c0c0;
    padding: 15px;
    text-align: center;
    margin: 25px auto;
    font-size: 0.85rem;
    color: #666;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Accordion (Spoiler) Styles */
.accordion-item {
  margin-bottom: 12px;
  border: 1px solid #d0d0d0;
  border-radius: 5px;
  overflow: hidden;
}

.accordion-item input[type="checkbox"] {
  display: none;
}

.accordion-item label {
  display: block;
  background-color: #e8eaed;
  color: #222;
  padding: 14px 18px;
  cursor: pointer;
  font-weight: bold;
  transition: background-color 0.3s ease;
  position: relative;
}

.accordion-item label:hover {
  background-color: #dde1e6;
}

.accordion-item label::after {
  content: '▼';
  font-size: 0.7em;
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  transition: transform 0.3s ease-out;
}

.accordion-item input[type="checkbox"]:checked + label::after {
  transform: translateY(-50%) rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.35s ease-out;
  padding: 0 18px;
  background-color: #fdfdfd;
  border-top: 1px solid #d0d0d0;
}
.accordion-content p:last-child {
    margin-bottom: 0;
}

.accordion-item input[type="checkbox"]:checked ~.accordion-content {
  max-height: 1200px;
  padding: 18px;
  transition: max-height 0.45s cubic-bezier(1, 0, 1, 0), padding 0.45s ease-in;
}

/* Table Styles */
.table-container {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 20px 0;
    border: 1px solid #e8eaed;
    border-radius: 4px;
}

.character-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 650px;
}

.character-table th,
.character-table td {
    border: 1px solid #ddd;
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}

.character-table th {
    background-color: #f2f2f2;
    font-weight: bold;
    white-space: nowrap;
}

.character-table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

.character-table tbody tr:hover {
    background-color: #f0f2f5;
}

.character-table td a {
    color: #1a2a3a;
    text-decoration: underline;
}
.character-table td a:hover {
    color: #2a3f54;
}

.difficulty-stars {
    color: #f0ad4e;
    white-space: nowrap;
}

/* Character Detail Page Specifics */
.character-detail-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 20px;
}

.character-portrait-section {
    text-align: center;
}

.character-portrait-section img {
    max-width: 200px;
    height: auto;
    border: 1px solid #ccc;
    padding: 5px;
    background-color: #f9f9f9;
}
.character-info-section ul {
    list-style-type: disc;
    margin-left: 20px;
    padding-left: 0;
}
.character-info-section ul li {
    margin-bottom: 8px;
}

/* Breadcrumbs */
.breadcrumbs {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    font-size: 0.9em;
    color: #555;
}
.breadcrumbs li {
    display: inline;
}
.breadcrumbs li+li:before {
    content: ">";
    padding: 0 8px;
    color: #777;
}
.breadcrumbs li a {
    color: #1a2a3a;
    text-decoration: none;
}
.breadcrumbs li a:hover {
    text-decoration: underline;
}


/* Responsive Design */
@media (min-width: 768px) {
   .character-detail-grid {
        grid-template-columns: 220px 1fr;
    }
}

@media(max-width: 1024px) { 
    .header-container {
        justify-content: center;
    }
    .main-nav {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
    .main-nav ul {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media(max-width: 820px) {
   .header-container {
        justify-content: space-between;
        /* ★★★ 修正 ★★★ */
        flex-wrap: nowrap; /* ヘッダー内でアイテムが折り返さないように強制 */
   }

   /* ★★★ 修正 ★★★ */
   header h1 {
       white-space: normal; /* タイトルテキストの折り返しを許可 */
       font-size: 1.25rem;
       line-height: 1.3;
   }
   /* ★★★ 修正ここまで ★★★ */

   .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background-color: #1f3a55;
        flex-direction: column;
        padding-bottom: 10px;
        border-top: 1px solid #0b141e;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    }

   .main-nav ul {
        flex-direction: column;
        width: 100%;
        flex-wrap: nowrap;
    }

   .main-nav ul li {
        margin-left: 0;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #2a4a6d;
    }
   .main-nav ul li:last-child {
        border-bottom: none;
    }

   .main-nav ul li a {
        padding: 12px 15px;
        font-size: 0.95rem;
        color: #e0e0e0;
    }
   .main-nav ul li a:hover {
        background-color: #2a4a6d;
        color: #fff;
    }

   .mobile-nav-toggle-label {
        display: block;
    }

   .mobile-nav-toggle-cb:checked ~.main-nav {
        display: flex;
    }
   .mobile-nav-toggle-cb:checked +.mobile-nav-toggle-label span {
        background-color: transparent;
    }
   .mobile-nav-toggle-cb:checked +.mobile-nav-toggle-label span::before {
        transform: rotate(45deg);
        top: 0;
    }
   .mobile-nav-toggle-cb:checked +.mobile-nav-toggle-label span::after {
        transform: rotate(-45deg);
        top: 0;
    }

    article h2 {
        font-size: 1.7rem;
    }
    article h3 {
        font-size: 1.25rem;
    }
}