/* Base styles and variables */
:root {
    --primary-red: #e31c23;
    --dark-red: #c41018;
    --black: #000000;
    --dark-gray: #222222;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --font-main: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--light-gray);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header styles */
header {
    background-color: var(--black);
    color: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    max-height: 60px;
    margin-right: 20px;
}

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

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-red);
}

/* Hero section */
.hero {
    background-color: var(--primary-red);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Main content layout */
main {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 30px;
    margin-bottom: 60px;
}

/* Insight card styles */
.insight-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.insight-header {
    background-color: var(--black);
    color: var(--white);
    padding: 20px;
    border-bottom: 3px solid var(--primary-red);
}

.insight-header h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.date {
    font-style: italic;
    color: #cccccc;
}

.insight-intro {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 20px;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--primary-red);
}

.insight-main {
    padding: 25px;
}

.insight-main h3 {
    color: var(--primary-red);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.insight-main p {
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.insight-footer {
    background-color: var(--light-gray);
    padding: 15px 25px;
    border-top: 1px solid #e0e0e0;
    font-weight: 500;
    color: var(--dark-gray);
}

/* Sidebar styles */
.sidebar-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.sidebar-card h3 {
    color: var(--primary-red);
    margin-bottom: 15px;
    font-size: 1.3rem;
    border-bottom: 2px solid var(--light-gray);
    padding-bottom: 10px;
}

.sidebar-card ul {
    list-style: none;
}

.sidebar-card ul li {
    margin-bottom: 12px;
}

.sidebar-card ul li a {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.sidebar-card ul li a:hover {
    color: var(--primary-red);
}

.manus-ai {
    background-color: var(--black);
    color: var(--white);
}

.manus-ai h3 {
    color: var(--white);
    border-bottom: 2px solid var(--primary-red);
}

.btn {
    display: inline-block;
    background-color: var(--primary-red);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: var(--dark-red);
}

/* Footer styles */
footer {
    background-color: var(--black);
    color: var(--white);
    padding: 40px 0;
}

footer .container {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 30px;
    align-items: center;
}

.logo-small {
    max-height: 50px;
}

.footer-links ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

.footer-links ul li {
    margin: 0 15px;
}

.footer-links ul li a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--primary-red);
}

.footer-copyright {
    text-align: right;
    font-size: 0.9rem;
    color: #999;
}

/* Responsive styles */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 15px;
    }
    
    main {
        grid-template-columns: 1fr;
    }
    
    footer .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-logo, .footer-copyright {
        text-align: center;
    }
    
    .footer-links ul {
        flex-direction: column;
        margin-top: 20px;
    }
    
    .footer-links ul li {
        margin: 5px 0;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
}