/* 基礎樣式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 綠色主題色彩 */
:root {
    --primary-green: #2e7d32;
    --light-green: #4caf50;
    --dark-green: #1b5e20;
    --accent-green: #66bb6a;
    --bg-light: #f1f8e9;
    --text-dark: #2e2e2e;
    --text-light: #666;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.15);
}

/* 導航欄 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-green);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-green);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-green);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* 漢堡選單動畫效果 */
.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* 首頁英雄區塊 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e8f5e8 100%);
    /* padding: 100px 0 50px; */
    padding: 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%234caf50" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%234caf50" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%234caf50" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
    position: relative;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary, .btn-outline {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--primary-green);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

.btn-outline:hover {
    background: var(--primary-green);
    color: white;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
    position: relative;
}

.eco-icons {
    display: flex;
    gap: 30px;
    animation: float 6s ease-in-out infinite;
}

.eco-icons i {
    font-size: 4rem;
    color: var(--primary-green);
    opacity: 0.8;
    animation: pulse 2s ease-in-out infinite;
}

.eco-icons i:nth-child(2) {
    animation-delay: 0.5s;
}

.eco-icons i:nth-child(3) {
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

/* 關於環保區塊 */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 60px;
    font-weight: 700;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.about-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
}

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

.about-card i {
    font-size: 3rem;
    color: var(--primary-green);
    margin-bottom: 20px;
}

.about-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.about-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 回收流程區塊 */
.recycle {
    padding: 100px 0;
    background: var(--bg-light);
}

.recycle h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 60px;
    font-weight: 700;
}

.recycle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

/* 在桌面版添加步驟連接線 */
@media (min-width: 768px) {
    .recycle-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .recycle-grid::before {
        content: '';
        position: absolute;
        top: 50px;
        left: 50px;
        right: 50px;
        height: 2px;
        background: linear-gradient(90deg, var(--primary-green), var(--accent-green));
        z-index: 1;
        opacity: 0.3;
    }
    
    .recycle-item {
        position: relative;
        z-index: 2;
    }
}

.recycle-item {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    border: 2px solid transparent;
}

.recycle-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-green);
}

.recycle-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2.5rem;
    color: white;
    position: relative;
}

.recycle-icon.step1 {
    background: linear-gradient(135deg, #4caf50, #388e3c);
}

.recycle-icon.step2 {
    background: linear-gradient(135deg, #2196f3, #1976d2);
}

.recycle-icon.step3 {
    background: linear-gradient(135deg, #ff9800, #f57c00);
}

.step-number {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 40px;
    height: 40px;
    background: var(--primary-green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.recycle-item h3 {
    font-size: 1.4rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    font-weight: 600;
}

.recycle-item p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 1.1rem;
}

/* 再造創意區塊 */
.upcycle {
    padding: 100px 0;
    background: var(--white);
}

.upcycle h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 20px;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 60px;
}

.upcycle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.upcycle-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
}

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

.upcycle-image {
    height: 200px;
    background: linear-gradient(135deg, var(--light-green), var(--primary-green));
    display: flex;
    align-items: center;
    justify-content: center;
}

.upcycle-image i {
    font-size: 4rem;
    color: white;
}

.upcycle-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin: 25px 25px 15px;
    font-weight: 600;
}

.upcycle-card p {
    color: var(--text-light);
    margin: 0 25px 25px;
    line-height: 1.6;
}

.upcycle-card .btn-outline {
    margin: 0 25px 25px;
    display: inline-block;
}

/* 統計數據區塊 */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-green), var(--dark-green));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--accent-green);
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 500;
}

/* 聯絡我們區塊 */
.contact {
    padding: 100px 0;
    background: var(--bg-light);
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 60px;
    font-weight: 700;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    font-weight: 600;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-item i {
    font-size: 1.2rem;
    color: var(--primary-green);
    width: 20px;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 頁腳 */
.footer {
    background: var(--dark-green);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--accent-green);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: var(--primary-green);
    color: white;
    text-align: center;
    line-height: 40px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-green);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #ccc;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        width: 100%;
        text-align: center;
        transition: 0.3s ease;
        box-shadow: var(--shadow);
        padding: 20px 0;
        z-index: 1000;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .nav-menu a {
        font-size: 1.1rem;
        padding: 10px 20px;
        display: block;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 20px 50px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about h2,
    .recycle h2,
    .upcycle h2,
    .contact h2 {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 250px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .eco-icons {
        gap: 20px;
    }
    
    .eco-icons i {
        font-size: 3rem;
    }
}

/* 滾動動畫 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* 平滑滾動 */
html {
    scroll-behavior: smooth;
}