/* CSS Variables */
:root {
    --primary: #e63946;
    --primary-dark: #c1121f;
    --secondary: #457b9d;
    --light: #f1faee;
    --dark: #1d3557;
    --accent: #a8dadc;
    --gray: #8d99ae;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

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

section {
    padding: 80px 0;
}

h1, h2, h3, h4 {
    margin-bottom: 1rem;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary);
}

p {
    margin-bottom: 1.5rem;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background-color: #3a6a8a;
}

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

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

.card {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Header Styles */
header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-icon {
    color: var(--primary);
    font-size: 2rem;
    margin-right: 10px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    padding: 150px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 2rem;
}

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

.feature-card {
    text-align: center;
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

/* How It Works Section */
.how-it-works {
    background-color: var(--accent);
}

.steps {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 20px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

/* Heart Checker Section */
.heart-checker {
    background-color: var(--white);
}

.checker-container {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: flex-start;
}

.checker-form {
    flex: 1;
    min-width: 300px;
}

.checker-result {
    flex: 1;
    min-width: 300px;
    background-color: var(--light);
    padding: 30px;
    border-radius: 10px;
    display: none;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--gray);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.2);
}

.risk-level {
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.risk-low {
    background-color: #d4edda;
    color: #155724;
}

.risk-medium {
    background-color: #fff3cd;
    color: #856404;
}

.risk-high {
    background-color: #f8d7da;
    color: #721c24;
}

.risk-indicator {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* Blog Section */
.blog-posts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.blog-card {
    overflow: hidden;
}

.blog-img {
    height: 200px;
    background-color: var(--gray);
    border-radius: 10px 10px 0 0;
    margin: -30px -30px 20px;
    background-size: cover;
    background-position: center;
}

.blog-date {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.blog-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.blog-excerpt {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

/* FAQ Section */
.faq-section {
    background-color: var(--accent);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1.5rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    background-color: var(--white);
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.faq-answer {
    background-color: var(--light);
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer.active {
    padding: 20px;
    max-height: 500px;
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    overflow-y: auto;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    padding: 40px;
    border-radius: 10px;
    width: 90%;
    max-width: 800px;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--primary);
}

.modal h2 {
    margin-bottom: 1.5rem;
    text-align: left;
}

.modal h2::after {
    left: 0;
    transform: none;
}

/* Responsive Styles */
@media (max-width: 992px) {
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 15px 0;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin: 10px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-btns .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .modal-content {
        padding: 30px 20px;
        margin: 10% auto;
    }
}

@media (max-width: 576px) {
    section {
        padding: 60px 0;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
}