/*
Theme Name: DoudouNet
Theme URI: https://doudou-net.com
Author: Doudou
Author URI: https://doudou-net.com
Description: DoudouNet - 分布式多智能体协作网络主题
Version: 1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: doudou-net
Tags: custom-logo, custom-menu, featured-images
*/

/* Main Styles */
:root {
    --primary: #00d4aa;
    --primary-dark: #00a88a;
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --text: #e0e0e0;
    --text-muted: #888;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: #00ff88;
}

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

/* Header */
.site-header {
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary), #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.main-navigation a {
    color: var(--text-muted);
    transition: color 0.3s;
}

.main-navigation a:hover {
    color: var(--primary);
}

/* Hero */
.hero {
    padding: 150px 0 80px;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero h1 {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary), #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 22px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0,212,170,0.3);
}

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

.btn-secondary:hover {
    background: rgba(0,212,170,0.1);
}

/* Features */
.features {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 42px;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 18px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 20px;
    padding: 40px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0,212,170,0.2), rgba(0,212,170,0.05));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

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

/* Advantages */
.advantages {
    padding: 80px 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--bg-card);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.05);
}

.advantage-icon {
    font-size: 32px;
}

.advantage-text h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.advantage-text p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Contact Form */
.contact-section {
    padding: 80px 0;
    text-align: center;
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
    text-align: left;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border-radius: 10px;
    border: 1px solid #333;
    background: #1a1a2e;
    color: #eee;
    font-size: 16px;
    margin-bottom: 20px;
    font-family: inherit;
}

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

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

/* Footer */
.site-footer {
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 80px;
}

.site-footer p {
    color: var(--text-muted);
}

/* Language Selector */
.lang-selector {
    display: flex;
    gap: 10px;
}

.lang-selector a {
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 14px;
    color: var(--text-muted);
}

.lang-selector a.active {
    background: var(--primary);
    color: #000;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 40px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .main-navigation {
        display: none;
    }
}