/* REGIステップ - ナビゲーション共通CSS */

/* Fixed Header用のbody padding */
body {
    padding-top: 60px;
}

/* Fixed Header */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0.75rem 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    width: 100%;
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    margin-bottom: 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    text-decoration: none;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* ナビゲーションリンクコンテナ */
.navbar-links {
    display: flex !important;
    gap: 1.25rem !important;
    align-items: center !important;
}

.navbar-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-login {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: .9rem !important;
}

.btn-login:hover {
    background: var(--color-bg-light);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-register-nav {
    background: #ff7043;
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: .9rem;
}

.btn-register-nav:hover {
    background: #ff5722;
    color: white;
    transform: translateY(-1px);
}

/* ナビゲーションリンクのデフォルトスタイル */
.navbar-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s;
}

.navbar-links a:hover {
    color: var(--color-accent) !important;
}

.navbar .navbar-links a.active {
    color: var(--color-accent) !important;
    font-weight: 600 !important;
    position: relative;
}

.navbar .navbar-links a.active::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px 2px 0 0;
}

/* 1400px以下でナビゲーションリンクのフォントサイズを縮小 */
@media (max-width: 1400px) {
    .navbar-links a {
        font-size: 0.75rem;
    }

    .btn-login {
        padding: 0.5rem 0.75rem;
        font-size: 0.7rem !important;
    }

    .btn-register-nav {
        padding: 0.5rem 0.75rem;
        font-size: 0.7rem;
    }
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.7rem;
    line-height: 1.5;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.mobile-menu-toggle:hover {
    background: var(--color-bg-light);
    border-color: var(--color-accent);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    z-index: 999;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-menu.active {
    max-height: 700px;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    padding: 0rem 0;
}

.mobile-menu-links a {
    padding: .8rem 1rem;
    color: var(--color-text-primary) !important;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid var(--color-border-light);
    transition: background 0.2s;
}

.mobile-menu-links a:visited {
    color: var(--color-text-primary) !important;
}

.mobile-menu-links a:hover {
    background: var(--color-bg-light);
    color: var(--color-accent) !important;
}

.mobile-menu-links a:last-child {
    border-bottom: none;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    /* スマホ用ヘッダー調整 */
    .navbar-brand {
        font-size: 1.125rem;
    }

    .navbar-links {
        display: none !important;
    }

    .navbar-buttons {
        gap: 0.375rem;
    }

    .btn-login {
        padding: 0.5rem 0.75rem !important;
        font-size: 0.7rem !important;
        line-height: 1.5 !important;
    }

    .btn-register-nav {
        padding: 0.5rem 0.75rem !important;
        font-size: 0.7rem !important;
        line-height: 1.5 !important;
    }

    /* モバイルメニュー表示 */
    .mobile-menu-toggle {
        display: block !important;
    }

    .mobile-menu {
        display: block !important;
    }

    /* モバイルでもボタンは表示 */
    .navbar-buttons {
        display: flex !important;
    }
}