/* ========================================
   CSS変数定義
======================================== */
:root {
    /* カラーパレット */
    --primary: #1a237e;
    --primary-light: #3949ab;
    --primary-dark: #0d1642;
    --accent: #ffd700;
    --accent-dark: #daa520;
    --success: #4caf50;
    --danger: #f44336;
    --warning: #ff9800;
    
    /* テキストカラー */
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-light: #ffffff;
    
    /* 背景カラー */
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-gradient: linear-gradient(135deg, #e3f2fd 0%, #f5f5f5 100%);
    
    /* シャドウ */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
    --shadow-ball: 0 6px 16px rgba(0,0,0,0.3);
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* ボーダーラディウス */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* トランジション */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   リセット・ベーススタイル
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   ヘッダー・ナビゲーション
======================================== */
.header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
}

.logo-icon {
    font-size: 2rem;
    animation: logoSpin 3s ease-in-out infinite;
}

@keyframes logoSpin {
    0%, 90%, 100% { transform: rotate(0deg); }
    45% { transform: rotate(15deg); }
    55% { transform: rotate(-15deg); }
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 0.5px;
    background: linear-gradient(45deg, var(--accent), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-light);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ========================================
   レイアウト
======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    border-radius: 2px;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero-section {
    margin-bottom: var(--spacing-xl);
}

.hero-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--text-light);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    background: linear-gradient(90deg, var(--accent), transparent);
}

.hero-card .section-title {
    color: var(--text-light);
    text-align: center;
}

.hero-card .section-title::after {
    background: var(--accent);
    left: 50%;
    transform: translateX(-50%);
}

.draw-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.draw-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

.draw-date {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   数字ボール（改良版）
======================================== */
.numbers-display {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
}

.main-numbers {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.number-ball {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 30%, var(--primary-light) 70%, var(--primary-dark) 100%);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 900;
    box-shadow: var(--shadow-ball);
    animation: ballFadeIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) backwards;
    position: relative;
}

.number-ball::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 25%;
    width: 25%;
    height: 25%;
    background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, transparent 70%);
    border-radius: var(--radius-full);
}

@keyframes ballFadeIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(-50px) rotate(180deg);
    }
    60% {
        transform: scale(1.1) translateY(0) rotate(0deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0) rotate(0deg);
    }
}

.number-ball:nth-child(1) { animation-delay: 0.1s; }
.number-ball:nth-child(2) { animation-delay: 0.2s; }
.number-ball:nth-child(3) { animation-delay: 0.3s; }
.number-ball:nth-child(4) { animation-delay: 0.4s; }
.number-ball:nth-child(5) { animation-delay: 0.5s; }
.number-ball:nth-child(6) { animation-delay: 0.6s; }

.bonus-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.bonus-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.bonus-number {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    box-shadow: var(--shadow-ball);
    animation: ballFadeIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.7s backwards;
    position: relative;
}

.bonus-number::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 25%;
    width: 25%;
    height: 25%;
    background: radial-gradient(circle, rgba(255,255,255,0.6) 0%, transparent 70%);
    border-radius: var(--radius-full);
}

/* ========================================
   キャリーオーバーアラート
======================================== */
.carry-over-alert {
    margin-top: var(--spacing-lg);
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideInUp 0.6s ease-out;
    box-shadow: var(--shadow-md);
}

.carry-over-alert.hidden {
    display: none;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-icon {
    font-size: 2.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.alert-amount {
    font-size: 1.5rem;
    font-weight: 900;
}

/* ========================================
   カウントダウン
======================================== */
.countdown-section {
    margin-bottom: var(--spacing-xl);
}

.countdown-card {
    text-align: center;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
}

.countdown-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
}

.countdown-display {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    min-width: 80px;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
    color: var(--accent);
}

.countdown-label {
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
    opacity: 0.9;
}

.countdown-separator {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0 var(--spacing-xs);
}

.next-draw-info {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ========================================
   統計セクション
======================================== */
.quick-stats-section {
    margin-bottom: var(--spacing-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
}

.stat-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.stat-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border-left: 4px solid var(--accent);
}

.stat-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
}

.stat-count {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========================================
   テーブル
======================================== */
.recent-draws-section {
    margin-bottom: var(--spacing-xl);
}

.table-container {
    overflow-x: auto;
    margin-top: var(--spacing-md);
    border-radius: var(--radius-md);
}

.draws-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
}

.draws-table thead {
    background: var(--primary);
    color: var(--text-light);
}

.draws-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 700;
    white-space: nowrap;
}

.draws-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--bg-primary);
}

.draws-table tbody tr {
    transition: background-color var(--transition-fast);
}

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

.draws-table tbody tr:nth-child(even) {
    background-color: rgba(26, 35, 126, 0.02);
}

/* ========================================
   機能カード
======================================== */
.features-section {
    margin-bottom: var(--spacing-xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    cursor: pointer;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    position: relative;
}

.feature-card::before {
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    display: block;
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.feature-action {
    color: var(--primary);
    font-weight: 700;
    transition: color var(--transition-fast);
}

.feature-card:hover .feature-action {
    color: var(--accent-dark);
}

/* ========================================
   フッター
======================================== */
.footer {
    background: linear-gradient(135deg, var(--primary-dark), #000);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

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

.footer-disclaimer {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    font-size: 0.95rem;
}

.footer-link {
    color: var(--accent);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-dark);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* ========================================
   ユーティリティクラス
======================================== */
.hidden {
    display: none !important;
}

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

.text-right {
    text-align: right;
}

/* ========================================
   レスポンシブ設計
======================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        width: 100%;
        padding: var(--spacing-lg) 0;
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-normal);
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-md);
        border-radius: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .countdown-value {
        font-size: 2rem;
    }

    .countdown-separator {
        font-size: 1.5rem;
    }

    .number-ball {
        width: 55px;
        height: 55px;
        font-size: 1.4rem;
    }

    .bonus-number {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    .hero-card {
        padding: var(--spacing-lg);
    }

    .section-title {
        font-size: 1.5rem;
    }

    .draws-table {
        font-size: 0.9rem;
    }

    .draws-table th,
    .draws-table td {
        padding: var(--spacing-sm);
    }

    .countdown-display {
        gap: var(--spacing-xs);
    }

    .countdown-item {
        min-width: 60px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .main-content {
        padding: var(--spacing-lg) 0;
    }

    .card {
        padding: var(--spacing-md);
    }

    .number-ball {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }

    .bonus-number {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .countdown-value {
        font-size: 1.5rem;
    }

    .feature-icon {
        font-size: 3rem;
    }

    .hero-card {
        padding: var(--spacing-md);
    }

    .main-numbers {
        gap: var(--spacing-sm);
    }
}