/* ============================================
   基本樣式與變數
   ============================================ */

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --light-bg: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --text-dark: #111827;
    --text-light: #6b7280;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #ffffff;
    overflow-x: hidden;
}

/* ============================================
   容器
   ============================================ */

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

/* ============================================
   導航列
   ============================================ */

.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar .logo {
    font-size: 1.5rem;
    font-weight: bold;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.nav-links a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.nav-links .cta-link {
    background-color: var(--secondary-color);
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    font-weight: 600;
}

.nav-links .cta-link:hover {
    opacity: 0.9;
    text-decoration: none;
}

/* ============================================
   Hero 區段
   ============================================ */

.hero {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.05) 100%);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.tagline {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

.illustration-box {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 8rem;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
    animation: float 3s ease-in-out infinite;
}

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

/* ============================================
   按鈕樣式
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.btn-large {
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
}

/* ============================================
   關於我們區段
   ============================================ */

.about {
    padding: 5rem 0;
    background-color: var(--light-bg);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--gray-900);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.about-text strong {
    color: var(--primary-color);
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 6rem;
    border: 3px dashed var(--gray-300);
}

/* ============================================
   特性區段
   ============================================ */

.features {
    padding: 5rem 0;
    background-color: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--gray-900);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--gray-100);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 35px rgba(99, 102, 241, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   社群文化區段
   ============================================ */

.community {
    padding: 5rem 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
}

.community h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--gray-900);
}

.community-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.culture-box {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 5px solid var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.culture-box h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

.welcome-list,
.values-list {
    list-style: none;
}

.welcome-list li,
.values-list li {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.6;
}

.culture-warning {
    background: rgba(236, 72, 153, 0.1);
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-dark);
}

.culture-warning p {
    margin: 0;
    font-size: 1.05rem;
}

/* ============================================
   加入我們區段
   ============================================ */

.join {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.join h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: white;
}

.join-content {
    max-width: 600px;
    margin: 0 auto;
}

.join-text p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.join-buttons {
    margin: 2rem 0;
}

.btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-primary:hover {
    background-color: #db2777;
    border-color: #db2777;
}

.discord-info {
    margin-top: 2rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: var(--border-radius);
}

.discord-info p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.discord-info code {
    display: block;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.8rem;
    border-radius: 6px;
    word-break: break-all;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--gray-900);
    color: #ffffff;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    color: #d1d5db;
    font-size: 0.95rem;
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul a {
    color: #d1d5db;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul a:hover {
    color: white;
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* ============================================
   響應式設計
   ============================================ */

@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .container {
        grid-template-columns: 1fr;
        padding: 2rem 0;
    }

    .hero-illustration {
        order: -1;
    }

    .about-content,
    .community-content {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .illustration-box {
        width: 200px;
        height: 200px;
        font-size: 5rem;
    }

    .features h2,
    .about h2,
    .community h2,
    .join h2 {
        font-size: 2rem;
    }

    .join-content {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 0.5rem;
        font-size: 0.75rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .culture-box {
        padding: 1.5rem;
    }

    .join-text p {
        font-size: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}