/* モダンなナビゲーションバーのカスタムCSS */
:root {
    --bg-main: #e8e8e0;
    --bg-hover: #dcdcd4;
    --text-main: #2c2c2c;
    --text-sub: #666666;
    --accent: #0a9396;
    --accent-hover: #005f73;
    --border: #c0c0b5;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.navbar-modern {
    background: linear-gradient(135deg, var(--bg-main) 0%, #f0f0e8 100%) !important;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    /* Bootstrap標準のpaddingに任せる。不要な場合は下記メディアクエリで上書き */
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    width: 100%;
    transition: all 0.3s ease;
}

.navbar-container {
    max-width: 900px;
    margin-left: 0;
}

.navbar-brand {
    margin-right: 0.5rem;
    display: flex;
    align-items: center;
}

.brand-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: 1px;
    background: linear-gradient(45deg, var(--accent), var(--accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav {
    gap: 0.2rem;
    display: flex;
    align-items: center;
}

.navbar-nav .nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

.navbar-nav .modern-link {
    color: var(--text-main) !important;
    padding: 0.4rem 0.7rem !important;
    border-radius: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid transparent;
    font-size: 0.95rem;
    min-width: 0;
    white-space: nowrap;
}

.navbar-nav .modern-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(10, 147, 150, 0.07), transparent);
    transition: left 0.5s;
}

.navbar-nav .modern-link:hover::before {
    left: 100%;
}

.navbar-nav .modern-link:hover {
    background: linear-gradient(135deg, var(--bg-hover) 0%, #e0e0d8 100%);
    color: var(--accent) !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(10, 147, 150, 0.08);
    border-color: var(--accent);
}

.navbar-nav .modern-link:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(10, 147, 150, 0.12);
}

.link-text {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.2px;
    color: var(--text-main);
    line-height: 1;
    display: block;
}

.navbar-toggler {
    border: 1px solid var(--border);
    background-color: var(--bg-hover);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(10, 147, 150, 0.18);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(44, 44, 44, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

@media (max-width: 991.98px) {
    .navbar-nav {
        gap: 0.1rem;
        /* padding: 1rem 0; */
    }
    .navbar-nav .modern-link {
        /* padding: 0.4rem 0.7rem !important; */
        /* margin: 0.15rem 0; */
        font-size: 1rem;
    }
    .brand-text {
        font-size: 1rem;
    }
    .navbar .navbar-brand {
        margin-right: auto;
        margin-left: 0;
        justify-content: flex-start;
    }
    .navbar .container {
        justify-content: flex-start !important;
    }
    .navbar .navbar-nav {
        justify-content: flex-start !important;
        align-items: flex-start !important;
    }
}

/* アクティブ状態 */
.navbar-nav .modern-link.active {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white !important;
    box-shadow: 0 4px 15px rgba(10, 147, 150, 0.18);
}

/* 固定navbar用のメインコンテンツ調整 */
body {
    padding-top: 56px;
}

/* 高さやpaddingのカスタム指定は削除し、Bootstrap5デフォルトに任せる */
@media (max-width: 768px) {
  .navbar, .navbar-modern {
    padding-top: 0.2rem !important;
    padding-bottom: 0.2rem !important;
  }
  .navbar-brand {
    font-size: 1rem !important;
    padding-top: 0.1rem !important;
    padding-bottom: 0.1rem !important;
  }
  .navbar-toggler {
    padding-top: 0.1rem !important;
    padding-bottom: 0.1rem !important;
    font-size: 1rem !important;
  }
}