/* パートナー・スポンサー表示フッター */
.partner-footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #fff;
    padding: 2.5rem 0;
    margin-top: 0;
    border-top: 3px solid #3498db;
    position: relative;
    overflow: hidden;
}

.partner-footer::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, 
        rgba(52, 152, 219, 0.1) 0%, 
        transparent 25%, 
        transparent 75%, 
        rgba(52, 152, 219, 0.1) 100%);
    pointer-events: none;
}

.partner-container {
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.partner-title {
    font-family: Montserrat, 'Noto Sans JP', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #fff;
    text-align: center;
    margin-bottom: 2.5rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    position: relative;
}

.partner-title::after {
    content: '';
    position: absolute;
    bottom: -0.8rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #3498db 0%, #2980b9 100%);
    border-radius: 2px;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, 284px);
    gap: 1.5rem;
    margin: 0 auto;
    justify-content: center;
    width: 100%;
}

.partner-item {
    background: linear-gradient(145deg, #34495e 0%, #2c3e50 100%);
    border: 2px solid rgba(52, 152, 219, 0.3);
    border-radius: 12px;
    padding: 0.8rem 1rem;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    box-shadow: 
        0 4px 12px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    cursor: pointer;
}

/* プレースホルダー用スタイル */
.partner-item-placeholder {
    background: linear-gradient(145deg, #7f8c8d 0%, #95a5a6 100%);
    border: 2px solid rgba(149, 165, 166, 0.3);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
    grid-column: 1 / -1;
}

.partner-item-placeholder .partner-name {
    color: #2c3e50;
    font-style: italic;
}

.partner-item:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: #3498db;
    box-shadow: 
        0 8px 24px rgba(52, 152, 219, 0.3),
        0 4px 12px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    background: linear-gradient(145deg, #3498db 0%, #2980b9 100%);
}

.partner-name {
    font-family: Montserrat, 'Noto Sans JP', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: #ecf0f1;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    line-height: 1.3;
    text-align: center;
    width: 100%;
}

.partner-item:hover .partner-name {
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 700;
}

/* 大画面対応 */
@media (min-width: 1300px) {
    .partner-container {
        padding: 0 3rem;
    }
}

@media (max-width: 1250px) {
    .partner-grid {
        grid-template-columns: repeat(auto-fit, 284px);
        gap: 1.5rem;
    }
}

@media (max-width: 900px) {
    .partner-grid {
        grid-template-columns: repeat(auto-fit, 220px);
        gap: 1.2rem;
    }
}

@media (max-width: 768px) {
    .partner-footer {
        padding: 2rem 0;
    }
    
    .partner-container {
        padding: 0 1.5rem;
    }
    
    .partner-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
        letter-spacing: 0.1em;
    }
    
    .partner-grid {
        grid-template-columns: repeat(auto-fit, 180px);
        gap: 1rem;
    }
    
    .partner-item {
        padding: 0.8rem;
        min-height: 50px;
    }
    
    .partner-name {
        font-size: 1rem;
    }
}

@media (max-width: 600px) {
    .partner-grid {
        grid-template-columns: repeat(auto-fit, 140px);
        gap: 0.8rem;
    }
    
    .partner-item {
        padding: 0.6rem;
        min-height: 45px;
    }
}

@media (max-width: 480px) {
    .partner-footer {
        padding: 1.5rem 0;
    }
    
    .partner-container {
        padding: 0 1rem;
    }
    
    .partner-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
        letter-spacing: 0.08em;
    }
    
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }
    
    .partner-item {
        padding: 0.6rem;
        min-height: 40px;
    }
    
    .partner-name {
        font-size: 0.9rem;
        letter-spacing: 0.03em;
    }
}

/* パートナーモーダル */
.partner-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.partner-modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.partner-modal {
    background: transparent;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.3s ease;
}

.partner-modal-overlay.show .partner-modal {
    transform: translateY(0) scale(1);
}

.partner-modal-header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 16px 16px 0 0;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.partner-modal-title {
    font-family: Montserrat, 'Noto Sans JP', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: 0.05em;
    color: #fff;
    text-align: center;
    flex: 1;
    padding-left: 60px;
    padding-right: 60px;
    line-height: 1.3;
    word-break: break-word;
    overflow-wrap: break-word;
}

.partner-modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: background-color 0.3s ease;
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
}

.partner-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.partner-modal-body {
    padding: 2rem;
    background: linear-gradient(145deg, #fff 0%, #f8fafc 100%);
    border-radius: 0 0 16px 16px;
}

.partner-brand-image {
    text-align: center;
    margin-bottom: 2rem;
}

.partner-brand-image img {
    max-width: 250px;
    max-height: 150px;
}

.partner-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.partner-link-item a {
    display: flex;
    align-items: center;
    padding: 1rem 1.2rem;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
    width: 320px;
    height: 55px;
    box-sizing: border-box;
    justify-content: flex-start;
    min-height: 55px;
}

.partner-link-item a:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.partner-link-item i {
    font-size: 1.2rem;
    margin-right: 0.8rem;
    width: 24px;
    text-align: center;
}

.partner-link-item span {
    font-family: Montserrat, 'Noto Sans JP', sans-serif;
    font-weight: 600;
    font-size: 1rem;
}

/* Xロゴの代替スタイル（Font Awesomeで表示されない場合の対応） */
.partner-link-item .fa-x-twitter::before {
    content: "𝕏";
    font-family: "Segoe UI", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
    font-weight: bold;
    font-style: normal;
}

/* モバイル用モーダルスタイル */
@media (max-width: 768px) {
    .partner-modal {
        width: 95%;
        margin: 20px;
    }
    
    .partner-modal-header {
        padding: 1rem;
    }
    
    .partner-modal-title {
        font-size: 1.2rem;
        color: #fff !important;
        padding-left: 50px;
        padding-right: 50px;
        line-height: 1.3;
    }
    
    .partner-modal-body {
        padding: 1.5rem;
    }
    
    .partner-link-item a {
        padding: 0.8rem 1rem;
        width: 250px;
        height: 48px;
        max-width: 100%;
    }
    
    .partner-link-item span {
        font-size: 0.9rem;
    }
}