/* ========================
   全体レイアウト
======================== */
* {
    box-sizing: border-box;
}

body {
    font-family: "Helvetica Neue", "Hiragino Kaku Gothic ProN", Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #eee;
    margin: 0;
    padding: 0;
}

header {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.2rem 2rem;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: transparent;
    background: linear-gradient(45deg, #00bfff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 2px 2px 10px rgba(0, 191, 255, 0.4);
}

/* ========================
   ナビゲーション
======================== */
.site-nav {
    display: flex;
    justify-content: center;
    gap: 0;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-link {
    color: #aaa;
    text-decoration: none;
    padding: 12px 20px;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
}

.nav-link:hover {
    color: #f0c040;
    background: rgba(240, 192, 64, 0.05);
}

.nav-active {
    color: #f0c040;
    border-bottom: 2px solid #f0c040;
}

main {
    padding: 30px 20px;
    max-width: 850px;
    margin: 0 auto;
}

/* ========================
   セクション
======================== */
section {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    margin-bottom: 24px;
}

h2 {
    margin-top: 0;
    font-size: 1.1rem;
    color: #f0c040;
    border-bottom: 1px solid rgba(240, 192, 64, 0.3);
    padding-bottom: 10px;
    letter-spacing: 1px;
}

/* ========================
   トップページ：ヒーロー＆カード
======================== */
.hero {
    text-align: center;
    padding: 40px 20px;
}

.hero h2 {
    font-size: 1.6rem;
    border: none;
    margin-bottom: 8px;
}

.hero p {
    color: #aaa;
    font-size: 0.95rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.menu-card {
    display: block;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    text-decoration: none;
    color: #eee;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.menu-card:hover {
    transform: translateY(-6px);
    border-color: rgba(240, 192, 64, 0.4);
    box-shadow: 0 8px 30px rgba(240, 192, 64, 0.15);
    background: rgba(255, 255, 255, 0.1);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.menu-card h3 {
    margin: 0 0 8px;
    font-size: 1.15rem;
    color: #f0c040;
}

.menu-card p {
    color: #aaa;
    font-size: 0.85rem;
    margin: 0;
}

/* ========================
   レース情報
======================== */
#race-info h3 {
    margin: 0 0 12px;
    font-size: 1.2rem;
    color: #fff;
}

.race-meta {
    margin-bottom: 16px;
}

.meta-line {
    color: #ccc;
    font-size: 0.85rem;
    padding: 3px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* ========================
   テーブル
======================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
    /* Force minimum width to trigger scroll on small screens */
}

th {
    background: rgba(240, 192, 64, 0.15);
    color: #f0c040;
    padding: 10px 12px;
    text-align: left;
    font-size: 0.85rem;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(240, 192, 64, 0.3);
    white-space: nowrap;
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.95rem;
    color: #ddd;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.05);
}

/* ========================
   予想マーク（◎○▲△）
======================== */
.prediction-mark {
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    width: 48px;
}

.mark-honmei {
    color: #ff4444;
}

.mark-taikou {
    color: #4488ff;
}

.mark-tannnin {
    color: #44bb44;
}

.mark-renpuku {
    color: #ffaa00;
}

/* ========================
   ボタン
======================== */
.control-panel {
    text-align: center;
    margin-top: 8px;
}

button {
    background: linear-gradient(135deg, #f0c040, #e09000);
    color: #1a1a2e;
    border: none;
    padding: 12px 32px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(240, 192, 64, 0.3);
    transition: all 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(240, 192, 64, 0.5);
}

button:active {
    transform: translateY(0px);
}

/* ========================
   フッター
======================== */
footer {
    text-align: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.8rem;
}

/* ========================
   レスポンシブ
======================== */
@media (max-width: 600px) {
    .site-nav {
        flex-wrap: wrap;
    }

    .nav-link {
        padding: 10px 14px;
        font-size: 0.8rem;
    }

    main {
        padding: 20px 12px;
    }

    th,
    td {
        padding: 8px 6px;
        font-size: 0.8rem;
    }
}