/*
================================================
新光電気風プレミアムボタンデザイン
参考: https://www.shinko.co.jp/recruit/highschool/
2025年7月16日実装
================================================
*/

/* ===== 2025年カラーパレット（ボタン専用） ===== */
:root {
    --btn-primary-orange: #FF6B35;
    --btn-fresh-blue: #4ECDC4;
    --btn-sunshine-yellow: #FFE66D;
    --btn-neon-pink: #FF6B9D;
    --btn-success-green: #2ECC71;
    --btn-danger-red: #E74C3C;
    --btn-neutral-gray: #95A5A6;
    --btn-dark-gray: #2C3E50;
    --btn-white: #FFFFFF;
    --btn-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    --btn-shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.25);
    --btn-shadow-active: 0 3px 10px rgba(0, 0, 0, 0.2);
}

/* ===== ベースボタンスタイル ===== */
.btn-premium {
    /* 基本レイアウト */
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;
    
    /* サイズ */
    padding: 16px 32px !important;
    min-height: 52px !important;
    
    /* フォント */
    font-family: 'Noto Sans JP', 'Nunito', sans-serif !important;
    font-size: 1rem !important;
    font-weight: 700 !important;
    text-decoration: none !important;
    text-align: center !important;
    white-space: nowrap !important;
    letter-spacing: 0.5px !important;
    
    /* 外観 */
    border: none !important;
    border-radius: 50px !important;
    cursor: pointer !important;
    user-select: none !important;
    
    /* アニメーション */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    transform: translateY(0) !important;
    
    /* 3D効果 */
    box-shadow: var(--btn-shadow) !important;
    
    /* オーバーフロー制御 */
    position: relative !important;
    overflow: hidden !important;
    
    /* アクセシビリティ */
    outline: none !important;
    -webkit-tap-highlight-color: transparent !important;
}

/* ===== シマーエフェクト（新光電気風） ===== */
.btn-premium::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: -100% !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    ) !important;
    transition: left 0.6s ease !important;
    z-index: 1 !important;
}

.btn-premium:hover::before {
    left: 100% !important;
}

/* ===== ボタン内容のz-index制御 ===== */
.btn-premium > * {
    position: relative !important;
    z-index: 2 !important;
}

/* ===== ホバー効果 ===== */
.btn-premium:hover {
    transform: translateY(-4px) scale(1.02) !important;
    box-shadow: var(--btn-shadow-hover) !important;
}

/* ===== アクティブ効果 ===== */
.btn-premium:active {
    transform: translateY(-1px) scale(0.98) !important;
    box-shadow: var(--btn-shadow-active) !important;
    transition: all 0.1s ease !important;
}

/* ===== フォーカス効果（アクセシビリティ） ===== */
.btn-premium:focus {
    outline: 3px solid var(--btn-sunshine-yellow) !important;
    outline-offset: 3px !important;
}

/* ===== プライマリボタン（オレンジ〜ピンクグラデーション） ===== */
.btn-primary-premium {
    background: linear-gradient(135deg, var(--btn-primary-orange) 0%, var(--btn-neon-pink) 100%) !important;
    color: var(--btn-white) !important;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4) !important;
}

.btn-primary-premium:hover {
    background: linear-gradient(135deg, #E55A2E 0%, #E5528A 100%) !important;
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.6) !important;
    color: var(--btn-white) !important;
}

/* ===== セカンダリボタン（アウトライン） ===== */
.btn-secondary-premium {
    background: transparent !important;
    color: var(--btn-primary-orange) !important;
    border: 2px solid var(--btn-primary-orange) !important;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.2) !important;
}

.btn-secondary-premium:hover {
    background: var(--btn-primary-orange) !important;
    color: var(--btn-white) !important;
    border-color: var(--btn-primary-orange) !important;
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4) !important;
}

/* ===== 成功ボタン（ブルー〜グリーン） ===== */
.btn-success-premium {
    background: linear-gradient(135deg, var(--btn-fresh-blue) 0%, var(--btn-success-green) 100%) !important;
    color: var(--btn-white) !important;
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.4) !important;
}

.btn-success-premium:hover {
    background: linear-gradient(135deg, #3BB5AE 0%, #27AE60 100%) !important;
    box-shadow: 0 10px 30px rgba(78, 205, 196, 0.6) !important;
    color: var(--btn-white) !important;
}

/* ===== 情報ボタン（ブルー系） ===== */
.btn-info-premium {
    background: linear-gradient(135deg, var(--btn-fresh-blue) 0%, #3498DB 100%) !important;
    color: var(--btn-white) !important;
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.4) !important;
}

.btn-info-premium:hover {
    background: linear-gradient(135deg, #3BB5AE 0%, #2980B9 100%) !important;
    box-shadow: 0 10px 30px rgba(78, 205, 196, 0.6) !important;
    color: var(--btn-white) !important;
}

/* ===== 警告ボタン（イエロー系） ===== */
.btn-warning-premium {
    background: linear-gradient(135deg, var(--btn-sunshine-yellow) 0%, #F39C12 100%) !important;
    color: var(--btn-dark-gray) !important;
    box-shadow: 0 6px 20px rgba(255, 230, 109, 0.4) !important;
}

.btn-warning-premium:hover {
    background: linear-gradient(135deg, #F7DC6F 0%, #E67E22 100%) !important;
    box-shadow: 0 10px 30px rgba(255, 230, 109, 0.6) !important;
    color: var(--btn-dark-gray) !important;
}

/* ===== 危険ボタン（レッド系） ===== */
.btn-danger-premium {
    background: linear-gradient(135deg, var(--btn-danger-red) 0%, #C0392B 100%) !important;
    color: var(--btn-white) !important;
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4) !important;
}

.btn-danger-premium:hover {
    background: linear-gradient(135deg, #CB4335 0%, #A93226 100%) !important;
    box-shadow: 0 10px 30px rgba(231, 76, 60, 0.6) !important;
    color: var(--btn-white) !important;
}

/* ===== ニュートラルボタン（グレー系） ===== */
.btn-neutral-premium {
    background: linear-gradient(135deg, var(--btn-neutral-gray) 0%, #7F8C8D 100%) !important;
    color: var(--btn-white) !important;
    box-shadow: 0 6px 20px rgba(149, 165, 166, 0.4) !important;
}

.btn-neutral-premium:hover {
    background: linear-gradient(135deg, #85929E 0%, #566573 100%) !important;
    box-shadow: 0 10px 30px rgba(149, 165, 166, 0.6) !important;
    color: var(--btn-white) !important;
}

/* ===== ボタンサイズバリエーション ===== */

/* 小サイズ */
.btn-sm-premium {
    padding: 12px 24px !important;
    min-height: 40px !important;
    font-size: 0.875rem !important;
    border-radius: 40px !important;
}

/* 大サイズ */
.btn-lg-premium {
    padding: 20px 40px !important;
    min-height: 60px !important;
    font-size: 1.125rem !important;
    border-radius: 60px !important;
}

/* 特大サイズ */
.btn-xl-premium {
    padding: 24px 48px !important;
    min-height: 72px !important;
    font-size: 1.25rem !important;
    border-radius: 72px !important;
}

/* ===== フルワイドボタン ===== */
.btn-block-premium {
    width: 100% !important;
    display: flex !important;
}

/* ===== ボタングループ ===== */
.btn-group-premium {
    display: flex !important;
    gap: 12px !important;
    flex-wrap: wrap !important;
    align-items: center !important;
}

.btn-group-premium .btn-premium {
    flex: 1 !important;
    min-width: 0 !important;
}

/* ===== アイコン付きボタン ===== */
.btn-premium .material-icons,
.btn-premium .material-icons-round,
.btn-premium .material-icons-outlined {
    font-size: 20px !important;
    flex-shrink: 0 !important;
}

.btn-sm-premium .material-icons,
.btn-sm-premium .material-icons-round,
.btn-sm-premium .material-icons-outlined {
    font-size: 18px !important;
}

.btn-lg-premium .material-icons,
.btn-lg-premium .material-icons-round,
.btn-lg-premium .material-icons-outlined {
    font-size: 24px !important;
}

.btn-xl-premium .material-icons,
.btn-xl-premium .material-icons-round,
.btn-xl-premium .material-icons-outlined {
    font-size: 28px !important;
}

/* ===== 右側アイコン ===== */
.btn-premium.icon-right {
    flex-direction: row-reverse !important;
}

/* ===== 無効化状態 ===== */
.btn-premium:disabled,
.btn-premium.disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
    transform: none !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
    pointer-events: none !important;
}

.btn-premium:disabled::before,
.btn-premium.disabled::before {
    display: none !important;
}

/* ===== ローディング状態 ===== */
.btn-premium.loading {
    pointer-events: none !important;
    opacity: 0.8 !important;
}

.btn-premium.loading::after {
    content: '' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    width: 16px !important;
    height: 16px !important;
    margin: -8px 0 0 -8px !important;
    border: 2px solid transparent !important;
    border-top: 2px solid currentColor !important;
    border-radius: 50% !important;
    animation: btn-spin 1s linear infinite !important;
    z-index: 3 !important;
}

@keyframes btn-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.btn-premium.loading > * {
    opacity: 0 !important;
}

/* ===== レスポンシブ対応 ===== */
@media (max-width: 768px) {
    .btn-premium {
        padding: 14px 28px !important;
        min-height: 48px !important;
        font-size: 0.95rem !important;
    }
    
    .btn-sm-premium {
        padding: 10px 20px !important;
        min-height: 36px !important;
        font-size: 0.8rem !important;
    }
    
    .btn-lg-premium {
        padding: 18px 36px !important;
        min-height: 56px !important;
        font-size: 1.05rem !important;
    }
    
    .btn-xl-premium {
        padding: 22px 44px !important;
        min-height: 64px !important;
        font-size: 1.15rem !important;
    }
    
    .btn-group-premium {
        gap: 8px !important;
    }
    
    .btn-group-premium.stack-mobile {
        flex-direction: column !important;
    }
    
    .btn-group-premium.stack-mobile .btn-premium {
        width: 100% !important;
    }
}

@media (max-width: 480px) {
    .btn-premium {
        padding: 12px 24px !important;
        min-height: 44px !important;
        font-size: 0.9rem !important;
    }
    
    .btn-group-premium {
        gap: 6px !important;
    }
}

/* ===== 高コントラスト対応 ===== */
@media (prefers-contrast: high) {
    .btn-premium {
        border: 2px solid currentColor !important;
    }
    
    .btn-secondary-premium {
        border-width: 3px !important;
    }
}

/* ===== モーション削減対応 ===== */
@media (prefers-reduced-motion: reduce) {
    .btn-premium,
    .btn-premium::before {
        transition: none !important;
        animation: none !important;
    }
    
    .btn-premium:hover {
        transform: none !important;
    }
    
    .btn-premium.loading::after {
        animation: none !important;
        border: 2px solid currentColor !important;
        border-radius: 0 !important;
    }
}

/* ===== ダークモード対応 ===== */
@media (prefers-color-scheme: dark) {
    .btn-secondary-premium {
        background: rgba(255, 255, 255, 0.1) !important;
        border-color: rgba(255, 255, 255, 0.3) !important;
        color: var(--btn-white) !important;
    }
    
    .btn-secondary-premium:hover {
        background: rgba(255, 255, 255, 0.2) !important;
        color: var(--btn-white) !important;
    }
}

/* ===== 特殊エフェクトボタン ===== */

/* パルス効果 */
.btn-premium.pulse {
    animation: btn-pulse 2s infinite !important;
}

@keyframes btn-pulse {
    0% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-2px) scale(1.02); }
    100% { transform: translateY(0) scale(1); }
}

/* グロー効果 */
.btn-premium.glow {
    animation: btn-glow 3s ease-in-out infinite alternate !important;
}

@keyframes btn-glow {
    from { box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4), 0 0 20px rgba(255, 107, 53, 0.3); }
    to { box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4), 0 0 30px rgba(255, 107, 53, 0.6); }
}

/* ===== 印刷時の配慮 ===== */
@media print {
    .btn-premium {
        background: transparent !important;
        color: #000 !important;
        border: 2px solid #000 !important;
        box-shadow: none !important;
        text-decoration: underline !important;
    }
    
    .btn-premium::before {
        display: none !important;
    }
}

/* ===== 専用CTAボタンスタイル ===== */
.cta-entry-premium {
    background: linear-gradient(135deg, var(--btn-primary-orange) 0%, var(--btn-neon-pink) 50%, var(--btn-sunshine-yellow) 100%) !important;
    color: var(--btn-white) !important;
    font-size: 1.1rem !important;
    font-weight: 800 !important;
    padding: 18px 36px !important;
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.5) !important;
    text-transform: uppercase !important;
    letter-spacing: 1px !important;
}

.cta-entry-premium:hover {
    transform: translateY(-5px) scale(1.05) !important;
    box-shadow: 0 15px 40px rgba(255, 107, 53, 0.7) !important;
    color: var(--btn-white) !important;
}

.cta-phone-premium {
    background: linear-gradient(135deg, var(--btn-fresh-blue) 0%, #2ECC71 100%) !important;
    color: var(--btn-white) !important;
}

.cta-phone-premium:hover {
    background: linear-gradient(135deg, #3BB5AE 0%, #27AE60 100%) !important;
    color: var(--btn-white) !important;
}