/* ============================================
   極真館 セミナーライブラリ — スタイルシート
   高視認性デザイン（シニア対応）
   ============================================ */

/* リセット & ベース */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 18px; /* ベースを大きめに */
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', 'Yu Gothic', 'Meiryo', sans-serif;
    -webkit-font-smoothing: antialiased;
    background: #ffffff;
    color: #1a1a1a;
    line-height: 1.7;
    min-height: 100vh;
}

a {
    color: #b91c1c;
    text-decoration: none;
}
a:hover { text-decoration: underline; }

/* レイアウト */
.container {
    max-width: 520px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
.header {
    position: sticky;
    top: 0;
    background: #fff;
    border-bottom: 2px solid #e5e5e5;
    padding: 14px 20px;
    z-index: 100;
}
.header-inner {
    max-width: 520px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
}
.btn-back {
    color: #b91c1c;
    font-weight: 800;
    font-size: 1rem;
    padding: 6px 10px;
    border-radius: 8px;
    border: none;
    background: none;
    cursor: pointer;
}
.btn-back:active { background: #fef2f2; }
.header-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: #1a1a1a;
}

/* 赤帯ヒーロー */
.hero {
    background: #991b1b;
    color: #fff;
    padding: 44px 24px;
    text-align: center;
}
.hero-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 76px;
    height: 76px;
    border-radius: 50%;
    background: #fff;
    color: #991b1b;
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 18px;
}
.hero h1 {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}
.hero p { color: #fca5a5; font-size: 0.95rem; }

/* ユーザーヘッダー */
.user-header {
    background: #991b1b;
    color: #fff;
    padding: 22px 20px;
}
.user-header-inner {
    max-width: 520px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 14px;
}
.user-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: #fff;
    color: #991b1b;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 900;
    flex-shrink: 0;
}
.user-header h1 { font-size: 1.2rem; font-weight: 900; }
.user-header .meta { color: #fca5a5; font-size: 0.9rem; }

/* カード */
.card {
    background: #fafafa;
    border: 2px solid #e5e5e5;
    border-radius: 16px;
    padding: 22px;
    margin-bottom: 16px;
}
.card-clickable {
    cursor: pointer;
    transition: background 0.1s;
}
.card-clickable:active { background: #f0f0f0; }

.card-red {
    background: #fef2f2;
    border-color: #fca5a5;
}
.card-yellow {
    background: #fefce8;
    border-color: #fde047;
}

/* セミナー日付 */
.seminar-date {
    color: #b91c1c;
    font-weight: 800;
    font-size: 0.9rem;
    margin-bottom: 6px;
}

/* タグ */
.tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 999px;
    border: 2px solid #d4d4d4;
    background: #fff;
    color: #404040;
    margin-right: 6px;
    margin-top: 8px;
}
.tag-small {
    font-size: 0.78rem;
    padding: 4px 10px;
    background: #f5f5f5;
    border: none;
    border-radius: 8px;
}

/* ボタン */
.btn {
    display: inline-block;
    font-weight: 900;
    font-size: 1.1rem;
    padding: 16px 24px;
    border-radius: 16px;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: background 0.15s;
    text-decoration: none;
    line-height: 1.3;
}
.btn-block { display: block; width: 100%; }
.btn-red {
    background: #b91c1c;
    color: #fff;
}
.btn-red:hover { background: #991b1b; text-decoration: none; }
.btn-red:active { background: #7f1d1d; }
.btn-red:disabled, .btn-red.disabled {
    background: #d4d4d4;
    color: #a3a3a3;
    cursor: default;
}

.btn-outline {
    background: #fff;
    color: #b91c1c;
    border: 2px solid #b91c1c;
}
.btn-outline:hover { background: #fef2f2; text-decoration: none; }

.btn-sm {
    font-size: 0.9rem;
    padding: 10px 16px;
    border-radius: 12px;
    font-weight: 700;
}
.btn-price {
    background: #b91c1c;
    color: #fff;
    font-weight: 900;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    white-space: nowrap;
}
.btn-price:active { background: #991b1b; }
.btn-free {
    background: #15803d;
    color: #fff;
    font-weight: 900;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
}

/* フォーム */
.form-group { margin-bottom: 20px; }
.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: #404040;
    margin-bottom: 8px;
}
.form-input {
    width: 100%;
    background: #fafafa;
    border: 2px solid #d4d4d4;
    border-radius: 12px;
    padding: 14px 18px;
    font-size: 1rem;
    color: #1a1a1a;
    font-family: inherit;
}
.form-input::placeholder { color: #a3a3a3; }
.form-input:focus {
    outline: none;
    border-color: #b91c1c;
}

/* タブ切り替え */
.tab-group {
    display: flex;
    border: 2px solid #d4d4d4;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 28px;
}
.tab-btn {
    flex: 1;
    padding: 14px;
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    background: #fff;
    color: #737373;
    transition: all 0.15s;
}
.tab-btn.active {
    background: #b91c1c;
    color: #fff;
}

/* 通知バー */
.notification {
    position: fixed;
    top: 14px;
    left: 14px;
    right: 14px;
    z-index: 9999;
    padding: 14px 20px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 0.95rem;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    animation: slideDown 0.3s ease-out;
}
.notification-success { background: #15803d; color: #fff; }
.notification-error { background: #dc2626; color: #fff; }
.notification-info { background: #1d4ed8; color: #fff; }

@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 資料ビューア */
.material-viewer {
    padding: 24px 20px;
    max-width: 700px;
    margin: 0 auto;
}
.material-viewer h1 { font-size: 1.5rem; margin-bottom: 10px; }
.material-viewer h2 { font-size: 1.25rem; margin: 28px 0 12px; color: #991b1b; }
.material-viewer h3 { font-size: 1.1rem; margin: 20px 0 10px; }
.material-viewer p { margin-bottom: 14px; font-size: 1rem; line-height: 1.8; }
.material-viewer ul, .material-viewer ol {
    margin-bottom: 14px;
    padding-left: 24px;
}
.material-viewer li { margin-bottom: 6px; font-size: 1rem; }
.material-viewer img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 14px 0;
}
.material-viewer table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
}
.material-viewer th, .material-viewer td {
    border: 2px solid #d4d4d4;
    padding: 10px 14px;
    text-align: left;
    font-size: 0.95rem;
}
.material-viewer th { background: #f5f5f5; font-weight: 700; }

/* アイテム行 */
.item-row {
    display: flex;
    align-items: center;
    gap: 14px;
    background: #fff;
    border: 2px solid #e5e5e5;
    border-radius: 16px;
    padding: 18px;
    margin-bottom: 12px;
}
.item-row-red {
    background: #fef2f2;
    border-color: #fca5a5;
}
.item-icon { font-size: 1.8rem; flex-shrink: 0; }
.item-info { flex: 1; }
.item-info .title { font-size: 0.95rem; font-weight: 700; color: #1a1a1a; }
.item-info .meta { font-size: 0.8rem; color: #737373; }

/* セクションタイトル */
.section-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #737373;
    margin-bottom: 14px;
}

/* ステップ */
.step-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: #fafafa;
    border: 2px solid #e5e5e5;
    border-radius: 16px;
    padding: 18px;
    margin-bottom: 12px;
}
.step-number {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #b91c1c;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 900;
    flex-shrink: 0;
}
.step-item h3 { font-size: 1rem; font-weight: 900; margin-bottom: 4px; }
.step-item p { font-size: 0.9rem; color: #525252; line-height: 1.6; }

/* バナー */
.banner {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    cursor: pointer;
    transition: background 0.1s;
}
.banner:active { opacity: 0.9; }
.banner-icon { font-size: 2.2rem; flex-shrink: 0; }

/* スペーサー */
.mt-2 { margin-top: 12px; }
.mt-4 { margin-top: 24px; }
.mt-6 { margin-top: 36px; }
.mb-2 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 24px; }
.mb-6 { margin-bottom: 36px; }
.py-4 { padding-top: 24px; padding-bottom: 24px; }
.py-6 { padding-top: 36px; padding-bottom: 36px; }
.text-center { text-align: center; }
.text-sm { font-size: 0.85rem; }
.text-muted { color: #737373; }
.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }

/* レスポンシブ微調整 */
@media (max-width: 400px) {
    html { font-size: 16px; }
    .hero { padding: 32px 18px; }
    .btn { padding: 14px 20px; font-size: 1rem; }
}

/* PWA safe-area（ノッチ対応） */
body {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

/* QRスキャンボタン（FAB） */
.qr-scan-fab {
    position: fixed;
    bottom: calc(28px + env(safe-area-inset-bottom, 0px));
    right: 20px;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: #b91c1c;
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 24px rgba(185, 28, 28, 0.4);
    z-index: 90;
    transition: transform 0.15s, box-shadow 0.15s;
}
.qr-scan-fab:active {
    transform: scale(0.92);
    box-shadow: 0 3px 12px rgba(185, 28, 28, 0.3);
}
.qr-scan-fab svg {
    width: 30px;
    height: 30px;
    fill: currentColor;
}

/* QRスキャナーモーダル */
#qr-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease-out;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.qr-modal {
    background: #fff;
    border-radius: 20px;
    width: 92vw;
    max-width: 400px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.qr-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 2px solid #e5e5e5;
}
.qr-modal-header h3 {
    font-size: 1rem;
    font-weight: 900;
}
#qr-close {
    width: 36px;
    height: 36px;
    border: none;
    background: #f5f5f5;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #737373;
}
#qr-close:active { background: #e5e5e5; }
.qr-video-wrap {
    position: relative;
    background: #000;
    aspect-ratio: 1;
}
#qr-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.qr-guide {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 3px solid rgba(255, 255, 255, 0.7);
    border-radius: 16px;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.25);
}
.qr-status {
    text-align: center;
    padding: 16px 20px;
    font-size: 0.9rem;
    font-weight: 700;
    color: #525252;
    white-space: pre-line;
}