/* Custom Properties */
:root {
    --primary-color: #0066cc;
    --secondary-color: #004d99;
    --accent-color: #00cc99;
    --text-color: #2c3e50;
    --light-text: #7f8c8d;
    --background: #ffffff;
    --light-background: #f8fafc;
    --card-background: #ffffff;
    --border-color: #ddd;
    --shadow-color: rgba(0,0,0,0.1);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --container-width: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* Dark Mode Colors */
body.dark-mode {
    --primary-color: #3399ff;
    --secondary-color: #66b3ff;
    --accent-color: #00ffcc;
    --text-color: #e1e1e1;
    --light-text: #a0a0a0;
    --background: #1a1a1a;
    --light-background: #2d2d2d;
    --card-background: #333333;
    --border-color: #404040;
    --shadow-color: rgba(0,0,0,0.3);
}

/* Dark Mode Toggle Button */
#darkModeToggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-left: 1rem;
    transition: var(--transition);
}

#darkModeToggle:hover {
    transform: scale(1.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
}

/* CTA Button in Hero Section */
.cta-button {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white !important;
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 1.25rem;
    font-weight: 600;
    border: 2px solid white;
}

.cta-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Header & Navigation */
.header {
    background: var(--background);
    box-shadow: 0 2px 4px var(--shadow-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo a {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

/* Mobile Menu Styles */
.nav-links.active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background: var(--background);
    padding: var(--spacing-md);
    box-shadow: 0 4px 6px var(--shadow-color);
    z-index: 999;
}

.nav-links.active li {
    margin: var(--spacing-xs) 0;
    text-align: center;
}

.nav-links li a {
    color: var(--text-color);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: var(--transition);
    display: block;
}

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

.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
}

/* Mobile menu button animation when active */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    padding: calc(var(--spacing-lg) * 2) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    margin-top: 60px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

/* News Section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.news-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--shadow-color);
}

.news-date {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.news-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
    line-height: 1.4;
}

/* News Article Links */
.news-content h3 a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    display: inline-block;
}

.news-content h3 a:hover {
    color: var(--secondary-color);
}

.news-content h3 a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--secondary-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}

.news-content h3 a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.news-content p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
    flex: 1;
}

.news-source {
    font-size: 0.9rem;
    color: var(--light-text);
    margin-top: auto;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}


/* Health Finder Section */
.health-finder {
    padding: var(--spacing-lg) 0;
    background: var(--light-background);
}

.health-finder-widget {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-top: var(--spacing-md);
}

.health-finder-widget iframe {
    border-radius: var(--border-radius);
    background: white;
}


/* Featured App Section */
.featured-app {
    background: var(--light-background);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.app-showcase h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.app-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.app-features li {
    padding: var(--spacing-sm);
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px var(--shadow-color);
}

/* Value Proposition */
.features {
    padding: var(--spacing-lg) 0;
    background: var(--light-background);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feature-card {
    background: var(--card-background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

/* Contact Form */
.contact {
    padding: var(--spacing-lg) 0;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow-color);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-color);
}

input,
textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    background: var(--background);
    color: var(--text-color);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
}

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

.submit-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    font-weight: 600;
}

.submit-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: var(--text-color);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

/* Update footer background in dark mode */
body.dark-mode .footer {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.footer-links a:hover {
    color: var(--accent-color);
}

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

/* Media Queries */
@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }

    .nav-links {
        display: flex;
        gap: var(--spacing-md);
    }

    .nav-links.active {
        position: static;
        padding: 0;
        box-shadow: none;
        flex-direction: row;
    }

    .nav-links.active li {
        margin: 0;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.feature-card,
.news-card,
.featured-app,
.health-finder-widget {
    animation: fadeIn 1s ease-out;
}

/* Last Updated Text */
.last-updated {
    text-align: center;
    color: var(--light-text);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
    font-style: italic;
}