/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Poppins:wght@600;700&display=swap');

/* CSS Variables for Colors */
:root {
    --color-primary: #2C9FAD;
    --color-secondary: #FF6B6B;
    --color-accent: #FFD93D;
    --color-dark: #2D3436;
    --color-light: #F8F9FA;
    --color-white: #FFFFFF;
    --color-teal-tint: #E8F5F7;

    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-dark);
    background-color: var(--color-white);
}

/* Skip to content link for accessibility */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-to-content:focus {
    top: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover, a:focus {
    color: var(--color-secondary);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 44px;
    line-height: 1.5;
}

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

.btn-primary:hover, .btn-primary:focus {
    background-color: #238a96;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 159, 173, 0.3);
    outline: none;
}

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

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--color-white);
    color: var(--color-primary);
    outline: none;
}

.btn-large {
    padding: 16px 48px;
    font-size: 1.125rem;
}

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

.btn-submit:hover, .btn-submit:focus {
    background-color: var(--color-light);
    outline: none;
}

/* Section Spacing */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

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

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(45, 52, 54, 0.5);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: var(--spacing-md);
}

.foundation-name {
    font-size: clamp(2rem, 6vw, 4rem);
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.tagline {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.hero-headline {
    font-size: clamp(1.75rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subheadline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Believe Section */
.believe-section {
    background-color: var(--color-light);
}

.believe-content {
    max-width: 900px;
    margin: 0 auto;
}

.intro {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.intro-sub {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

.belief-item {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.belief-item h3 {
    color: var(--color-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.5px;
}

.belief-item p {
    font-size: 1.0625rem;
    margin-bottom: 0;
}

.believe-closing {
    text-align: center;
    font-size: 1.0625rem;
    margin-top: var(--spacing-md);
    line-height: 1.8;
}

/* Atelius Section */
.atelius-section {
    background-color: var(--color-teal-tint);
}

.atelius-featured {
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.atelius-headline {
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.atelius-featured h4 {
    color: var(--color-primary);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.atelius-features {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.atelius-features li {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.atelius-features .icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.cta-center {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.atelius-future {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    opacity: 0.85;
}

.atelius-future h4 {
    color: var(--color-dark);
    font-size: 1.25rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.future-questions {
    list-style: disc;
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.future-questions li {
    padding: var(--spacing-xs) 0;
    line-height: 1.7;
}

/* About Section */
.about-section {
    background-color: var(--color-white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content h3 {
    color: var(--color-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.about-content ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.about-content li {
    padding: var(--spacing-xs) 0;
}

/* Join Section */
.join-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #238a96 100%);
    color: var(--color-white);
}

.join-section .section-title {
    color: var(--color-white);
}

.join-section .intro {
    color: var(--color-white);
}

.join-content {
    max-width: 900px;
    margin: 0 auto;
}

.join-section h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.join-section h4 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.participate-section {
    margin-bottom: var(--spacing-lg);
}

.participate-list {
    list-style: none;
}

.participate-list li {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.participate-list .icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* Email Signup Form */
.signup-form {
    margin: var(--spacing-xl) auto;
    max-width: 600px;
}

.email-signup {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.email-signup input[type="email"] {
    flex: 1;
    min-width: 250px;
    padding: 12px 20px;
    font-size: 1rem;
    border: 2px solid var(--color-white);
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-dark);
}

.email-signup input[type="email"]:focus {
    outline: none;
    background: var(--color-white);
    border-color: var(--color-accent);
}

.interest-select {
    margin-top: var(--spacing-md);
}

.interest-select p {
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

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

.radio-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    padding: var(--spacing-xs);
}

.radio-group input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

/* Contact Info */
.contact-info {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-info a {
    color: var(--color-white);
    text-decoration: underline;
}

.contact-info a:hover, .contact-info a:focus {
    color: var(--color-accent);
}

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

.footer-tagline {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.copyright {
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--color-white);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-nav a:hover, .footer-nav a:focus {
    opacity: 1;
    color: var(--color-accent);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }

    body {
        font-size: 16px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    .email-signup {
        flex-direction: column;
    }

    .email-signup input[type="email"] {
        width: 100%;
        min-width: 100%;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    section {
        padding: var(--spacing-lg) 0;
    }
}

/* Focus Indicators for Accessibility */
*:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

button:focus, a:focus, input:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}