:root {
    --primary-dark: #10141C; /* Very dark desaturated blue/charcoal */
    --secondary-dark: #1A1F2A;
    --accent-color: #00A9E0; /* Electric Blue / Teal */
    --accent-hover: #008RBD;
    --text-light: #EAEAEA;
    --text-medium: #A0AEC0;
    --border-color: rgba(255, 255, 255, 0.1);
    --card-background: #1F2430;

    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    background-color: var(--primary-dark);
    color: var(--text-light);
    line-height: 1.7;
    font-weight: 300;
    overflow-x: hidden;
}

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Hero Section */
.hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
}

.hero-background-abstract { /* Subtle animated background element */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(0, 169, 224, 0.08) 0%, transparent 30%),
        radial-gradient(circle at 90% 80%, rgba(0, 169, 224, 0.08) 0%, transparent 30%);
    opacity: 0.6;
    animation: pulseBackground 15s infinite alternate ease-in-out;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.athlyn-logo-img {
    display: block; 
    margin: 0 auto 0.75em auto; 
    max-width: 280px; 
    height: auto;
}

.hero-tagline {
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    color: var(--accent-color);
    font-weight: 400;
    margin-bottom: 0.75em;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

@keyframes pulseBackground {
    0% { transform: scale(1); opacity: 0.4; }
    100% { transform: scale(1.05); opacity: 0.7; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.athlyn-logo {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 10vw, 5.5rem); /* Responsive font size */
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--text-light);
    margin-bottom: 0.25em;
    text-shadow: 0 0 15px rgba(0, 169, 224, 0.3);
}

.hero-tagline {
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    color: var(--accent-color);
    font-weight: 400;
    margin-bottom: 0.75em;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.launch-status {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-medium);
    margin-bottom: 2em;
    font-weight: 300;
}

.btn-primary {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-dark);
    padding: 12px 30px;
    border-radius: 50px; /* Pill shape */
    text-decoration: none;
    font-weight: 700; /* Montserrat bold for button */
    font-family: var(--font-primary);
    font-size: clamp(0.9rem, 2vw, 1rem);
    transition: background-color 0.3s ease, transform 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 169, 224, 0.2);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #fff;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 169, 224, 0.3);
}


/* Main Content Sections */
.main-content {
    flex-grow: 1;
    padding: 0 20px; /* Padding for smaller screens */
}

.content-section {
    max-width: 1000px;
    margin: 60px auto; /* Increased top/bottom margin for separation */
    padding: 40px 0; /* Vertical padding, horizontal handled by max-width/auto margins */
    text-align: center;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 2.8rem);
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 0.5em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 0.3em auto 0; /* Centered under the title */
}

.section-intro {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    color: var(--text-medium);
    max-width: 750px;
    margin: 0 auto 2em auto; /* More bottom margin */
    font-weight: 300;
}

/* Core Impact Section */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px; /* Increased gap */
    margin-top: 40px;
}

.impact-card {
    background-color: var(--card-background);
    padding: 30px 25px; /* More padding */
    border-radius: 12px; /* Softer radius */
    text-align: left;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.impact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 169, 224, 0.1);
    border-color: var(--accent-color);
}

.impact-icon {
    font-size: 2.5rem; /* Larger icons */
    color: var(--accent-color);
    margin-bottom: 0.75em;
    display: inline-block;
}

.impact-card h3 {
    font-family: var(--font-primary);
    font-size: 1.4rem; /* Slightly larger */
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 0.6em;
}

.impact-card p {
    font-size: 0.95rem;
    color: var(--text-medium);
    font-weight: 300;
}

/* Connect Section */
.connect-section {
    background-color: var(--secondary-dark);
    padding: 60px 20px; /* More padding */
    border-radius: 12px;
    margin: 80px auto;
}

.btn-contact {
    display: inline-block;
    background-color: transparent;
    color: var(--accent-color);
    padding: 14px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-family: var(--font-primary);
    font-size: clamp(1rem, 2.5vw, 1.1rem);
    border: 2px solid var(--accent-color);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.btn-contact:hover {
    background-color: var(--accent-color);
    color: var(--primary-dark);
    transform: translateY(-3px) scale(1.02);
}


/* Footer */
.site-footer {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--secondary-dark);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-medium);
    margin-top: auto; /* Pushes footer to bottom if content is short */
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-section {
        min-height: 70vh;
    }
    .impact-grid {
        grid-template-columns: 1fr; /* Stack cards on smaller screens */
    }
    .content-section {
        margin: 40px auto;
        padding: 30px 0;
    }
}