/* xuzhongzhou.net - Modern Minimalist Design */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600;700&family=Roboto:wght@300;400;500;700&display=swap');

/* CSS Variables */
:root {
    --primary-blue: #4A90E2;
    --secondary-blue: #67B8F5;
    --light-blue: #E8F4FA;
    --dark-blue: #2E5C8A;
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --text-dark: #333333;
    --text-gray: #666666;
    --border-light: #E0E0E0;
    --shadow: rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

/* Body */
body {
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Open Sans', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    color: var(--dark-blue);
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.3;
}

h2 {
    font-size: 1.8rem;
    line-height: 1.3;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-gray);
}

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

a:hover {
    color: var(--dark-blue);
}

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

/* Header */
header {
    background: linear-gradient(135deg, var(--white) 0%, var(--light-blue) 100%);
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    font-family: 'Open Sans', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
}

.logo:hover {
    color: var(--dark-blue);
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

nav ul li a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 0.8rem;
    border-radius: 5px;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.95rem;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 0.3rem;
    border: 2px solid var(--primary-blue);
    border-radius: 25px;
    padding: 0.2rem;
    background-color: var(--white);
    flex-shrink: 0;
}

.language-switcher button {
    background: transparent;
    border: none;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-blue);
    transition: var(--transition);
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    min-width: 45px;
}

.language-switcher button.active {
    background-color: var(--primary-blue);
    color: var(--white);
}

.language-switcher button:hover {
    background-color: var(--secondary-blue);
    color: var(--white);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: var(--primary-blue);
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.hero .cta-button {
    display: inline-block;
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px var(--shadow);
}

.hero .cta-button:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow);
}

/* Content Section */
.content-section {
    padding: 4rem 0;
}

.content-section.gray-bg {
    background-color: var(--off-white);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

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

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 15px var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow);
}

.card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.card .icon {
    font-size: 3rem;
    color: var(--secondary-blue);
    margin-bottom: 1rem;
}

/* Blog Posts */
.blog-post {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px var(--shadow);
    transition: var(--transition);
}

.blog-post:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow);
}

.blog-post-content {
    padding: 1.5rem;
}

.blog-post h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.blog-post .date {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.blog-post .read-more {
    color: var(--primary-blue);
    font-weight: 600;
    display: inline-block;
    margin-top: 1rem;
}

/* Contact Form */
.contact-form {
    background-color: var(--white);
    border-radius: 10px;
    padding: 3rem;
    box-shadow: 0 4px 15px var(--shadow);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.contact-form h1 {
    text-align: center;
    margin-bottom: 2rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1.5rem;
    border: 2px solid var(--border-light);
    border-radius: 5px;
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

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

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

.contact-form button {
    width: 100%;
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 1rem;
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.contact-form button:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
}

/* Map */
.map-container {
    text-align: center;
    margin: 3rem 0;
}

.map-container iframe {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 15px var(--shadow);
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-contact {
    text-align: center;
    padding: 2rem 0;
}

.footer-contact p {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: var(--light-blue);
}

.footer-contact a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--light-blue);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 1.5rem;
    box-shadow: 0 -2px 10px var(--shadow);
    z-index: 2000;
    text-align: center;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.cookie-banner p {
    color: var(--white);
    margin: 0;
    display: inline-block;
    margin-right: 1rem;
}

.cookie-banner button {
    background-color: var(--white);
    color: var(--dark-blue);
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.cookie-banner button:hover {
    background-color: var(--light-blue);
    transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .header-content {
        position: relative;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        box-shadow: 0 4px 10px var(--shadow);
        padding: 1rem;
        width: 100%;
        z-index: 100;
    }

    nav.active {
        display: flex;
        flex-direction: column;
    }

    nav ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    nav ul li {
        width: 100%;
    }

    nav ul li a {
        display: block;
        padding: 1rem;
    }

    .language-switcher {
        margin-top: 1rem;
        align-self: center;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 1rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .map-container iframe {
        width: 100%;
        height: 300px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-1 {
    margin-bottom: 1rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.mt-2 {
    margin-top: 2rem;
}

.hidden {
    display: none;
}