/* 變數宣告：藍色科技感 + 綠色運動/ESG */
:root {
    --primary-blue: #0A2540; /* 穩重的深科技藍 */
    --accent-blue: #0066FF; /* 亮眼科技藍 */
    --primary-green: #28C76F; /* 活力/ESG 綠 */
    --text-dark: #333333;
    --text-gray: #666666;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 20px rgba(0,0,0,0.08);
    --transition: all 0.3s ease;
}

/* 基礎設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.text-center {
    text-align: center;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary-blue);
    margin-bottom: 50px;
    font-weight: 700;
}

/* 導覽列 (毛玻璃效果) */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-blue);
}

.logo span {
    color: var(--accent-blue);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.nav-btn {
    background: var(--primary-blue);
    color: var(--white) !important;
    padding: 8px 20px;
    border-radius: 5px;
    font-weight: 700;
}

.nav-btn:hover {
    background: var(--accent-blue);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-blue);
}

/* 首圖區 Hero */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #0A2540 0%, #1A3A5F 100%);
    color: var(--white);
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-content .highlight {
    color: var(--primary-green);
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

.cta-btn {
    background: var(--primary-green);
    color: var(--white);
    padding: 15px 35px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 30px;
    box-shadow: 0 10px 20px rgba(40, 199, 111, 0.3);
    transition: var(--transition);
    display: inline-block;
}

.cta-btn:hover {
    background: #21a55c;
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(40, 199, 111, 0.4);
}

/* 解決方案 Split Layout */
.split-layout {
    display: flex;
    gap: 30px;
}

.solution-card {
    flex: 1;
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.solution-card.before {
    border-top: 5px solid #E74C3C;
}

.solution-card.after {
    border-top: 5px solid var(--primary-green);
}

.icon-wrapper {
    font-size: 3rem;
    margin-bottom: 20px;
}

.before .icon-wrapper { color: #E74C3C; }
.after .icon-wrapper { color: var(--primary-green); }

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-blue);
}

.solution-card ul li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-gray);
}

.before ul li i { color: #E74C3C; margin-top: 4px; }
.after ul li i { color: var(--primary-green); margin-top: 4px; }

/* 核心模組 Grid Layout */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
}

.icon-primary {
    font-size: 2.5rem;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.feature-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* 關於我們 */
.about-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* 聯絡表單 */
.b2b-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
    width: 100%;
}

.form-group.half {
    width: 50%;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--primary-blue);
}

input, select, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.submit-btn {
    width: 100%;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--accent-blue);
}

/* 頁尾 */
footer {
    background: var(--primary-blue);
    color: var(--white);
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 20px;
    margin-bottom: 20px;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 900;
}

.footer-logo span {
    color: var(--primary-green);
}

.social-links a {
    color: var(--white);
    font-size: 1.2rem;
    margin-left: 15px;
    opacity: 0.8;
    transition: var(--transition);
}

.social-links a:hover {
    opacity: 1;
    color: var(--primary-green);
}

.copyright {
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.6;
}

/* 動畫基礎 Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* RWD 響應式設計 */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* 手機版暫時隱藏，實務上可做下拉選單 */
    }
    
    .hamburger {
        display: block;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .split-layout {
        flex-direction: column;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-group.half {
        width: 100%;
    }
}
/* 聯絡資訊與信箱連結樣式 */
.contact-info {
    margin-bottom: 40px;
    color: var(--text-gray);
    font-size: 1.1rem;
}

.email-direct-link {
    display: inline-block;
    margin-top: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-blue);
    background: rgba(0, 102, 255, 0.1);
    padding: 10px 20px;
    border-radius: 30px;
    transition: var(--transition);
}

.email-direct-link:hover {
    background: var(--accent-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 255, 0.2);
}

.footer-email {
    font-size: 1rem !important;
    font-weight: 500;
    margin-left: 20px !important;
}

.footer-email i {
    margin-right: 5px;
}