/*
 * ========================================
 * nav-styles.css - 生泰合成工業導覽列樣式
 * ========================================
 *
 * 架構說明:
 * 1. .navigation-wrapper - 實際導覽列元素 (從 shared/navigation.html 動態載入)
 * 2. #navigation-container - 導覽列容器 (用於模組化載入和樣式增強)
 *
 * 運作流程:
 * HTML頁面 → unified-module-loader.js → 載入 shared/navigation.html
 * → 將 .navigation-wrapper 插入 #navigation-container
 *
 * 最後更新: 2026-06-04（清透亮藍主題）
 * ========================================
 */

:root {
    --primary-color: #0F3A5F;
    --secondary-color: #0D3255;
    --gradient-start: #0F3A5F;
    --gradient-end: #0D3255;
    --text-color: #0F3A5F;
    --light-bg: #E1EFFB;
    --hover-color: #FF9933;
}

/* Header Styles */
.header-section {
    background: #E1EFFB;
    padding: 0.4rem 0;
    border-bottom: 2px solid transparent;
    border-image: linear-gradient(to right, #0F3A5F, #1A6EA8) 1;
    position: relative;
}

.header-section::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(to right, #0F3A5F 0%, #1A6EA8 100%);
    opacity: 0.25;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.2rem;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
}

.company-logo {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 200px;
    max-width: 500px;
    gap: 0.8rem;
    padding: 0.2rem 0.3rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.company-logo-img {
    max-height: 42px;
    max-width: 125px;
    width: auto;
    height: auto;
    object-fit: contain;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 6px rgba(15, 58, 95, 0.2));
    transition: all 0.3s ease;
}

.company-logo-img:hover {
    transform: scale(1.05);
}

.company-name {
    background: linear-gradient(135deg, #0F3A5F 0%, #1A6EA8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
    line-height: 1.2;
    flex: 1;
    display: flex;
    flex-direction: column;
    filter: drop-shadow(0 1px 2px rgba(15, 58, 95, 0.15));
}

.company-name-tw {
    margin-top: 10px;
    font-size: 1.4rem;
}

.company-name-en {
    font-size: 0.91rem;
}

.contact-links {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.contact-links a {
    color: var(--primary-color);
    text-decoration: none;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    border: 1px solid var(--primary-color);
    font-size: 0.875rem;
}

.contact-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.lang-dropdown {
    position: relative;
}

.lang-dropdown-btn {
    color: var(--primary-color);
    background: transparent;
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    padding: 0.3rem 0.8rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.lang-dropdown-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.lang-dropdown-btn:hover .lang-arrow {
    color: white;
}

.lang-arrow {
    font-size: 0.7rem;
    transition: transform 0.2s ease;
}

.lang-dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: white;
    border: 1px solid #E1EFFB;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(15, 58, 95, 0.06);
    min-width: 120px;
    padding: 4px 0 !important;
    margin: 0 !important;
    list-style: none !important;
    z-index: 9999;
}

.lang-dropdown-menu.open {
    display: block;
}

.lang-dropdown-menu li,
.lang-dropdown-menu li:before {
    list-style: none !important;
    list-style-type: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

.lang-dropdown-menu li a {
    display: block !important;
    padding: 0.5rem 1rem !important;
    font-size: 0.875rem !important;
    color: #4a5568 !important;
    text-decoration: none !important;
    white-space: nowrap;
    border: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    transform: none !important;
    transition: background 0.15s;
}

.lang-dropdown-menu li a:hover {
    background: #E1EFFB !important;
    color: #005BAC !important;
    transform: none !important;
}

/* Navigation Menu */
/* 註: 不使用 sticky，因為外層的 #navigation-container 已經是 sticky */
.navigation-wrapper {
    background: #E1EFFB;
    box-shadow: 0 2px 8px rgba(15, 58, 95, 0.14), 0 1px 3px rgba(13, 50, 85, 0.08);
    position: relative;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 2;
    padding: 0 1rem;
    box-sizing: border-box;
}

.navigation-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.45) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.35) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

/* Scrolled state enhancement */
.navigation-wrapper.is-scrolled {
    box-shadow: 0 4px 12px rgba(15, 58, 95, 0.18), 0 2px 6px rgba(13, 50, 85, 0.12);
    background: #CCDFF0;
}

.main-nav {
    padding: 0;
    margin: 0;
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: #0F3A5F;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 0;
    min-width: 140px;
    justify-content: center;
    white-space: nowrap;
    position: relative;
    z-index: 2;
}

.nav-item > a i {
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

.nav-item:hover > a,
.nav-item.active > a {
    background: #FFFFFF;
    font-weight: bold;
    color: #0F3A5F;
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #FFFFFF;
    min-width: 220px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(15, 58, 95, 0.06);
    border-radius: 0 0 8px 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 9999;
    list-style: none;
    padding: 0;
    margin: 0;
    pointer-events: none;
    border: 1px solid #E1EFFB;
}

.nav-item:hover > .dropdown-menu,
.nav-item:focus-within > .dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    pointer-events: auto !important;
    display: block !important;
}

.nav-item:hover::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 220px;
    height: 10px;
    z-index: 9998;
}

.dropdown-menu li {
    border-bottom: 1px solid rgba(15, 58, 95, 0.08);
    padding: 0;
    margin: 0;
}

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-menu a {
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 0.8rem 1rem;
    color: #334155;
    text-decoration: none;
    font-size: 16px;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
    cursor: pointer;
}

.dropdown-menu a:hover,
.dropdown-menu a:focus {
    background-color: #E1EFFB;
    color: #005BAC;
    border-left-color: #005BAC;
}

/* Sub-dropdown */
.dropdown-menu .dropdown-submenu {
    position: relative;
}

.dropdown-menu .dropdown-submenu > a::after {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    float: right;
    margin-top: 2px;
}

.dropdown-submenu .dropdown-menu {
    top: 0;
    left: 100%;
    border-radius: 8px;
}

.dropdown-submenu:hover > .dropdown-menu,
.dropdown-submenu:focus-within > .dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    pointer-events: auto !important;
    display: block !important;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #0F3A5F;
    font-size: 1.5rem;
    padding: 0.5rem;
    cursor: pointer;
}

/* Responsive Design */
@media (min-width: 1200px) {
    .logo-container,
    .nav-container {
        padding: 0 1.5rem;
    }

    .company-logo-img {
        max-height: 50px;
        max-width: 140px;
    }

    .company-name {
        font-size: 1.8rem;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .company-logo-img {
        max-height: 45px;
        max-width: 130px;
    }

    .company-name {
        font-size: 1.44rem;
    }
}

@media (max-width: 768px) {
    .logo-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1rem;
    }

    .company-logo {
        justify-content: center;
        min-width: auto;
        max-width: none;
        flex: none;
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .company-logo-img {
        max-height: 35px;
        max-width: 100px;
    }

    .company-name {
        font-size: 1.32rem;
    }

    .contact-links {
        justify-content: center;
    }

    .mobile-menu-toggle {
        display: block;
        margin: 1rem auto;
    }

    .main-nav,
    #navigation-container .main-nav {
        display: none;
        flex-direction: column;
        width: 100%;
    }

    .main-nav.show,
    #navigation-container .main-nav.show {
        display: flex !important;
    }

    .nav-item {
        width: 100%;
    }

    .nav-item > a {
        padding: 1rem;
        justify-content: flex-start;
        border-bottom: 1px solid rgba(15, 58, 95, 0.15);
    }

    .dropdown-menu,
    #navigation-container .dropdown-menu {
        position: static !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        box-shadow: none !important;
        border: none !important;
        background: #F0F6FC !important;
        margin-left: 1rem !important;
        padding-left: 1rem !important;
        pointer-events: auto;
        display: none;
    }

    .dropdown-menu.show,
    #navigation-container .dropdown-menu.show {
        display: block !important;
    }

    .nav-item.mobile-open .dropdown-menu {
        display: block;
    }

    #navigation-container .nav-item:has(.dropdown-menu) > a {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
    }

    #navigation-container .nav-item:has(.dropdown-menu) > a::after {
        content: "▼" !important;
        font-size: 0.8rem !important;
        transition: transform 0.3s ease !important;
        margin-left: auto !important;
    }
}

@media (max-width: 576px) {
    .company-logo-img {
        max-height: 30px;
        max-width: 80px;
    }

    .company-name {
        font-size: 1.2rem;
    }

    #navigation-container .navbar-nav .nav-link {
        font-size: 16px !important;
    }
}

/* ========================================
   Navigation Container Styles
   ======================================== */

#navigation-container {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.module-loading {
    background: #E1EFFB;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0F3A5F;
    font-size: 0.9rem;
}

/* ========================================
   Navigation Font Sizes
   ======================================== */

#navigation-container .navbar-nav .nav-link {
    font-size: 16px !important;
    font-weight: 500 !important;
}

#navigation-container .navbar-brand {
    font-size: 20px !important;
}

#navigation-container .dropdown-item {
    font-size: 14px !important;
}

/* ========================================
   Mobile Navigation Support
   ======================================== */

#navigation-container .mobile-menu-toggle {
    border: none !important;
    padding: 0.25rem 0.5rem !important;
    background: transparent !important;
    color: var(--primary-color) !important;
}

#navigation-container .mobile-menu-toggle:focus {
    box-shadow: none !important;
}

#navigation-container .main-nav {
    transition: all 0.3s ease !important;
}

#navigation-container .main-nav.show {
    display: block !important;
}

/* ========================================
   Responsive Design - Tablet
   ======================================== */

@media (max-width: 991.98px) {
    #navigation-container .main-nav .nav-item {
        border-bottom: 1px solid rgba(15, 58, 95, 0.1) !important;
    }

    #navigation-container .main-nav .nav-item:last-child {
        border-bottom: none !important;
    }

    #navigation-container .navbar-nav .nav-link {
        font-size: 18px !important;
    }

    #navigation-container .navbar-brand {
        font-size: 18px !important;
    }
}