/* Navbar 樣式 */
.navbar {
    /* 背景色改由後台動態設定（inline style），這裡不設定固定值 */
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid rgba(255,255,255,0.3);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.navbar-logo {
    padding: 0.5rem 0;
}

.navbar-logo a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0.75rem 0;
}

.navbar-menu li {
    position: relative;
}

.navbar-menu li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    display: block;
    border: none;
    border-right: 1px solid rgba(255,255,255,0.2);
}

.navbar-menu li:last-child a {
    border-right: none;
}

.navbar-menu li a:hover {
    background: rgba(255,255,255,0.2);
}

/* 子選單 */
.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #ab47bc;
    list-style: none;
    padding: 0.5rem 0;
    margin: 0;
    min-width: 200px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    border-radius: 8px;
    border: none;
}

.has-submenu:hover .submenu {
    display: block;
}

.submenu li {
    width: 100%;
}

.submenu li a {
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    border: none;
    border-left: 3px solid transparent;
}

.submenu li a:hover {
    background: rgba(255,255,255,0.3);
    border-left-color: white;
}

/* 有子選單的項目加上箭頭 */
.has-submenu > a::after {
    content: ' ▼';
    font-size: 0.7rem;
    margin-left: 0.3rem;
}

/* 圖片圖示水平排列樣式 */
.menu-content-horizontal {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 0.75rem;
}

.menu-icon-image {
    width: 48px !important;
    height: 48px !important;
    object-fit: contain;
    display: block !important;
    flex-shrink: 0;
}

.menu-icon-emoji {
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.menu-with-image > a {
    padding: 1rem 1.5rem;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
}

.menu-text {
    font-size: 0.95rem;
    white-space: nowrap;
    display: inline-block !important;
}

/* 子選單中的圖片圖示 */
.submenu .menu-icon-image {
    width: 36px !important;
    height: 36px !important;
}

.submenu .menu-content-horizontal {
    gap: 0.5rem;
}

.submenu .menu-text {
    font-size: 0.9rem;
}

.navbar-toggle {
    display: none;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.3s;
}

/* 響應式 */
@media (max-width: 768px) {
    .navbar-container {
        position: relative;
        padding: 1rem 20px;
    }
    
    .navbar-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #c62828;
        flex-direction: column;
        gap: 0;
        padding: 0;
        display: none;
        box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        max-height: calc(100vh - 80px);  /* 螢幕高度 - navbar 高度 */
        overflow-y: auto;                 /* 垂直捲軸 */
        overflow-x: hidden;               /* 隱藏水平捲軸 */
    }
    
    /* 捲軸樣式 */
    .navbar-menu::-webkit-scrollbar {
        width: 8px;
    }
    
    .navbar-menu::-webkit-scrollbar-track {
        background: rgba(0,0,0,0.1);
    }
    
    .navbar-menu::-webkit-scrollbar-thumb {
        background: rgba(255,255,255,0.3);
        border-radius: 4px;
    }
    
    .navbar-menu::-webkit-scrollbar-thumb:hover {
        background: rgba(255,255,255,0.5);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-menu li {
        width: 100%;
        position: relative;
        border-bottom: 1px solid rgba(255,255,255,0.2);  /* 加強區隔線 */
    }
    
    .navbar-menu li:last-child {
        border-bottom: none;
    }
    
    .navbar-menu > li {
        border-bottom: 2px solid rgba(255,255,255,0.3);  /* 主選單加粗線 */
    }
    
    .navbar-menu > li:last-child {
        border-bottom: none;
    }
    
    .navbar-menu li a {
        display: block;
        padding: 1.2rem 20px;             /* 增加內距 */
        border-radius: 0;
        font-size: 1rem;                  /* 增大文字 */
        font-weight: 500;
    }
    
    /* 手機版隱藏所有圖示 */
    .menu-icon-image,
    .menu-icon-emoji {
        display: none !important;         /* 完全隱藏圖示 */
    }
    
    .menu-content-vertical {
        display: block !important;        /* 改回普通排列 */
        flex-direction: row !important;
    }
    
    .menu-text {
        font-size: 1rem !important;       /* 文字變大 */
        display: inline !important;
        width: auto !important;
    }
    
    .menu-with-image > a {
        padding: 1.2rem 20px !important;  /* 統一內距 */
        display: block !important;
        flex-direction: row !important;
    }
    
    /* 手機版子選單 */
    .submenu {
        position: static;
        display: none;
        background: #8e24aa;
        box-shadow: none;
        border-radius: 0;
        border: none;
        border-top: 1px solid rgba(255,255,255,0.1);  /* 子選單上方細線 */
    }
    
    .submenu li {
        border-bottom: 1px solid rgba(255,255,255,0.15);  /* 子選單區隔線 */
    }
    
    .submenu li:last-child {
        border-bottom: none;
    }
    
    .has-submenu.open .submenu {
        display: block;
    }
    
    .has-submenu:hover .submenu {
        display: none;
    }
    
    .has-submenu.open:hover .submenu {
        display: block;
    }
    
    .submenu li a {
        padding: 1rem 20px 1rem 40px;     /* 增加左側縮排 */
        background: rgba(0,0,0,0.15);
        font-size: 0.95rem;
    }
    
    .submenu li a:active,
    .submenu li a:focus {
        background: rgba(0,0,0,0.25);
    }
}

/* 平板尺寸 (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .menu-icon-image {
        width: 48px !important;
        height: 48px !important;
    }
    
    .menu-content-vertical {
        gap: 0.4rem !important;
    }
    
    .menu-text {
        font-size: 0.9rem !important;
    }
    
    .menu-with-image > a {
        padding: 0.85rem 1.2rem !important;
    }
    
    .submenu .menu-icon-image {
        width: 32px !important;
        height: 32px !important;
    }
}

/* 小桌面 (1025px - 1280px) */
@media (min-width: 1025px) and (max-width: 1280px) {
    .menu-icon-image {
        width: 56px !important;
        height: 56px !important;
    }
    
    .menu-content-vertical {
        gap: 0.45rem !important;
    }
    
    .menu-text {
        font-size: 0.92rem !important;
    }
    
    .submenu .menu-icon-image {
        width: 40px !important;
        height: 40px !important;
    }
}