/* 機能確認用の仮デザイン。Claudeで全面調整してOKです。 */
:root{font-family:Inter,"Noto Sans JP",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#182230;background:#f5f7fb;line-height:1.65;--navy:#14304f;--blue:#2563eb;--blue-soft:#eef4ff;--border:#e4e9f0;--muted:#667085;--green:#0f8a5f;--red:#c4322b;--shadow:0 10px 30px rgba(16,42,67,.07)}*{box-sizing:border-box}body{margin:0;background:#f5f7fb}a{color:#245cba;text-decoration:none}a:hover{text-decoration:underline}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.header-inner{max-width:1240px;margin:auto;padding:14px 22px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;color:var(--navy);font-weight:800;white-space:nowrap}.brand:hover{text-decoration:none}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--navy);color:#fff;font-size:13px}.main-nav{display:flex;gap:4px;flex:1}.main-nav a{padding:8px 9px;border-radius:8px;color:#475467;font-size:14px}.main-nav a:hover{background:#f1f4f8;text-decoration:none;color:var(--navy)}.user-area{display:flex;align-items:center;gap:10px;font-size:13px}.user-name{font-weight:700}.logout-link{color:var(--muted)}.container{max-width:1180px;margin:34px auto 70px;padding:0 22px}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px}.page-heading h1{margin:0;font-size:30px;line-height:1.25;color:#14213d}.page-heading p{margin:5px 0}.eyebrow{margin:0 0 5px!important;letter-spacing:.12em;font-size:11px;font-weight:800;color:#3b6fc4}.card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;margin-bottom:18px;box-shadow:var(--shadow)}.card h2,.card h3{margin-top:0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:18px}.stats-grid.compact{grid-template-columns:repeat(2,minmax(0,220px))}.stat-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.stat-card span{display:block;color:var(--muted);font-size:13px}.stat-card strong{font-size:34px;color:var(--navy);line-height:1.3}.stat-card small{margin-left:4px;color:var(--muted)}.two-column{display:grid;grid-template-columns:1.35fr 1fr;gap:18px}.recommendation-card,.ai-callout,.mock-start,.review-card{display:flex;align-items:center;justify-content:space-between;gap:24px}.recommendation-card{border-left:5px solid var(--blue);background:linear-gradient(115deg,#fff,#f2f6ff)}.section-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:15px}.section-title h2{margin:0}.muted{color:var(--muted)}.btn,button{appearance:none;border:0;border-radius:10px;background:var(--navy);color:#fff;padding:11px 17px;font:inherit;font-weight:700;cursor:pointer;display:inline-flex;justify-content:center;align-items:center;text-decoration:none}.btn:hover,button:hover{opacity:.92;text-decoration:none}.btn.secondary{background:#eef2f6;color:#22334a;border:1px solid #dbe2ea}.btn.wide{width:100%;padding:14px}.badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;background:#eef2f6;color:#475467;font-size:12px;font-weight:700}.badge.accent,.ai-badge{background:var(--blue-soft);color:#245cba}.danger-badge{background:#fff0ef;color:#b42318}.active-badge{background:#ecfdf3;color:#027a48}.progress-row{margin:15px 0}.progress-row>div:first-child{display:flex;justify-content:space-between;gap:12px;margin-bottom:7px}.progress{height:8px;background:#edf0f4;border-radius:99px;overflow:hidden}.progress span{display:block;height:100%;background:#376fc4;border-radius:99px}.weak-row{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:10px;padding:11px 0;border-bottom:1px solid #edf0f3;color:inherit}.weak-row:hover{text-decoration:none}.rank{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#f1f4f8;font-size:12px}.history-row{display:grid;grid-template-columns:32px 1fr auto;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid #edf0f3}.history-row p{margin:2px 0;color:#475467}.history-meta{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:12px}.result-dot{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;font-weight:900}.is-correct{background:#e8f7ef;color:var(--green)}.is-wrong{background:#fff0ef;color:var(--red)}.quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:18px}.quiz-card{padding:30px}.quiz-meta{display:flex;justify-content:space-between;align-items:center;gap:12px}.question-text{font-size:22px;line-height:1.7;margin:24px 0}.choices{display:grid;gap:11px;margin:20px 0}.choice{display:grid;grid-template-columns:auto 36px 1fr;align-items:center;gap:10px;padding:14px 16px;border:1px solid #d7dee7;border-radius:12px;background:#fff;cursor:pointer;transition:.15s}.choice:hover{border-color:#8eadd8;background:#f9fbff}.choice:has(input:checked){border-color:#3976c8;background:#f1f6ff;box-shadow:0 0 0 2px #dceaff}.choice input{width:auto;margin:0}.choice-label{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:#f1f4f8;font-weight:800}.quiz-side{height:max-content}.result-hero{display:flex;align-items:center;gap:20px;border-radius:18px;padding:26px 30px;margin-bottom:18px}.correct-bg{background:#eefaf4;border:1px solid #ccebdc}.wrong-bg{background:#fff5f4;border:1px solid #f0d4d1}.result-icon{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#fff;font-size:32px;font-weight:900}.result-hero h1{margin:0}.result-hero p{margin:4px 0}.answer-box{padding:14px 16px;margin-top:13px;background:#f6f8fa;border-radius:12px}.answer-box span{display:block;color:var(--muted);font-size:12px;margin-bottom:3px}.answer-box p{margin:0}.correct-answer{background:#eefaf4}.explanation-text{font-size:16px}.page-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.ai-callout{background:linear-gradient(120deg,#f7f9ff,#fff)}.ai-answer{border-left:4px solid #6b66da}.quick-prompts{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:15px}.quick-prompts button{background:#edf2ff;color:#315ea9;padding:8px 10px;font-size:13px}.form-footer{display:flex;justify-content:space-between;align-items:center}.generator-form{display:grid;grid-template-columns:1fr 220px auto;align-items:end;gap:15px}.generator-form label{margin:0}.review-card h3{margin:10px 0 5px}.inline-actions{display:flex;align-items:center;gap:10px}.inline-actions form{margin:0}.mastered-list summary{cursor:pointer;font-weight:700}.mastered-row{display:flex;justify-content:space-between;gap:20px;padding:11px 0;border-top:1px solid #edf0f3}.section-block{margin-top:24px}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:16px;background:#fff;box-shadow:var(--shadow)}table{width:100%;border-collapse:collapse;min-width:720px}th,td{padding:13px 14px;border-bottom:1px solid #edf0f3;text-align:left;vertical-align:middle}th{background:#f8fafc;color:#475467;font-size:12px}.filter-links{display:flex;gap:6px;background:#e9edf3;padding:4px;border-radius:10px}.filter-links a{padding:6px 11px;border-radius:7px;color:#566274;font-size:13px}.filter-links a.active{background:#fff;color:var(--navy);font-weight:800}.notice{padding:12px 15px;border-radius:10px;margin:0 0 18px}.success-notice{background:#ecfdf3;color:#027a48;border:1px solid #abefc6}.danger-notice{background:#fff1f0;color:#b42318;border:1px solid #f5c8c4}.empty-state{text-align:center;color:var(--muted);padding:28px}.mock-number,.mock-score{font-size:52px;font-weight:900;color:var(--navy)}.mock-score span{font-size:22px;color:var(--muted)}.progress-count{width:220px}.answer-result-correct{border-left:5px solid var(--green)}.answer-result-wrong{border-left:5px solid var(--red)}.link-button{padding:0;background:none;color:#a8322c;font-weight:600}.link-button:hover{text-decoration:underline}.danger{color:var(--red)}.success{color:var(--green)}label{display:block;font-weight:600;margin-bottom:14px}input,select,textarea{width:100%;box-sizing:border-box;padding:11px 12px;margin-top:6px;border:1px solid #cfd7e2;border-radius:10px;background:#fff;color:#182230;font:inherit}input:focus,select:focus,textarea:focus{outline:3px solid #e1edff;border-color:#477ec9}hr{border:0;border-top:1px solid var(--border);margin:20px 0}
@media(max-width:950px){.header-inner{flex-wrap:wrap}.main-nav{order:3;width:100%;overflow:auto}.stats-grid{grid-template-columns:repeat(2,1fr)}.two-column,.quiz-layout{grid-template-columns:1fr}.quiz-side{order:-1}.generator-form{grid-template-columns:1fr 1fr}.generator-form button{grid-column:1/-1}.user-area{margin-left:auto}}
@media(max-width:650px){.container{margin-top:22px;padding:0 14px}.header-inner{padding:11px 14px}.brand span:last-child{display:none}.user-name{display:none}.main-nav{gap:2px}.main-nav a{font-size:12px;padding:6px}.page-heading{align-items:flex-start;flex-direction:column}.page-heading h1{font-size:25px}.stats-grid,.stats-grid.compact{grid-template-columns:1fr 1fr}.stat-card{padding:15px}.stat-card strong{font-size:28px}.card{padding:18px;border-radius:14px}.recommendation-card,.ai-callout,.mock-start,.review-card{align-items:flex-start;flex-direction:column}.question-text{font-size:19px}.quiz-card{padding:19px}.choice{grid-template-columns:auto 32px 1fr;padding:12px 10px}.result-hero{align-items:flex-start;padding:20px}.result-icon{width:45px;height:45px;font-size:25px}.history-row{grid-template-columns:30px 1fr}.history-meta{grid-column:2}.generator-form{grid-template-columns:1fr}.filter-links{width:100%;overflow:auto}.page-actions{flex-direction:column}.page-actions .btn{width:100%}.mastered-row{flex-direction:column;gap:4px}}@media (max-width: 650px) {
    .header-inner {
        flex-wrap: nowrap;
        gap: 10px;
    }

    .brand {
        flex: 1;
    }

    .brand span:last-child {
        display: inline;
        font-size: 14px;
    }

    .main-nav {
        display: none;
    }

    .user-area {
        margin-left: auto;
    }

    .user-name {
        display: none;
    }

    .mobile-menu-button {
        display: inline-flex;
        width: 42px;
        height: 42px;
        padding: 0;
        align-items: center;
        justify-content: center;
        font-size: 22px;
    }

    .mobile-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        padding: 12px 14px;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .mobile-nav.is-open {
        display: grid;
        gap: 6px;
    }

    .mobile-nav a {
        display: block;
        padding: 11px 12px;
        border-radius: 8px;
        color: #475467;
    }

    .mobile-nav a:hover {
        background: #f1f4f8;
        text-decoration: none;
    }
}

@media (min-width: 651px) {
    .mobile-menu-button,
    .mobile-nav {
        display: none;
    }
}
@media (max-width: 650px) {
    .header-inner {
        flex-wrap: nowrap;
        gap: 10px;
    }

    .brand {
        flex: 1;
    }

    .brand span:last-child {
        display: inline;
        font-size: 14px;
    }

    .main-nav {
        display: none;
    }

    .user-area {
        display: none;
    }

    .mobile-menu-button {
        display: inline-flex;
        flex-shrink: 0;
        width: 42px;
        height: 42px;
        padding: 0;
        align-items: center;
        justify-content: center;
        font-size: 22px;
    }

    .mobile-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        padding: 12px 14px;
        background: #fff;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .mobile-nav.is-open {
        display: grid;
        gap: 4px;
    }

    .mobile-nav a {
        display: block;
        padding: 11px 12px;
        border-radius: 8px;
        color: #475467;
    }

    .mobile-nav a:hover {
        background: #f1f4f8;
        color: var(--navy);
        text-decoration: none;
    }
}

@media (min-width: 651px) {
    .mobile-menu-button,
    .mobile-nav {
        display: none;
    }
}
/* ========================================
   スマホ用 ハンバーガーメニュー
======================================== */
@media (max-width: 650px) {

    /* メニュー全体 */
    .main-nav {
        width: 100%;
        padding: 6px 0 10px;
        gap: 0;
        flex-direction: column;
        align-items: stretch;
    }

    /* 各メニュー */
    .main-nav a {
        display: block;
        width: 100%;
        padding: 8px 14px;
        margin: 0;
        font-size: 14px;
        line-height: 1.4;
        border-radius: 6px;
        color: #475467;
    }

    .main-nav a:hover {
        background: #f5f7fb;
        color: var(--navy);
        text-decoration: none;
    }

    /* ログアウト部分 */
    .user-area {
        width: 100%;
        margin: 0;
        padding: 0 14px 8px;
    }

    .user-name {
        display: none;
    }

    .logout-link {
        display: block;
        width: 100%;
        padding: 8px 0;
        margin: 0;
        font-size: 14px;
    }
}
@media (max-width: 650px) {
    .mobile-nav {
        padding: 8px 14px 10px;
        gap: 0;
    }

    .mobile-nav.is-open {
        display: block;
    }

    .mobile-nav a {
        display: block;
        padding: 7px 12px;
        margin: 0;
        line-height: 1.3;
        font-size: 14px;
    }
}