/* Component Reason - Grounded/Natural Theme */
/* Color Palette: Stone, Sage, Sand with Deep Green accent */

:root {
    --color-background: #F7F5F0;      /* Warm off-white/cream */
    --color-surface: #FFFFFF;          /* Pure white for cards */
    --color-surface-alt: #EDE9E0;      /* Slightly darker cream */
    --color-text-primary: #2C3E2D;     /* Deep forest green - primary text */
    --color-text-secondary: #5A6B5C;   /* Muted sage - secondary text */
    --color-text-light: #5F6E61;       /* Light sage - subtle text (darkened for accessibility) */
    --color-accent: #3D5A40;           /* Forest green - buttons, links */
    --color-accent-hover: #2C4330;     /* Darker green - hover states */
    --color-accent-warm: #A67C52;      /* Warm brown - secondary accent */
    --color-border: #D4CFC4;           /* Soft stone border */
    
    --font-serif: 'Libre Baskerville', Georgia, serif;
    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --max-width: 1100px;
    --border-radius: 4px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Accessibility: Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-surface);
    padding: 8px 16px;
    z-index: 1000;
    text-decoration: none;
    border-radius: 0 0 4px 0;
    transition: top 0.2s;
}
.skip-link:focus {
    top: 0;
}

/* Accessibility: Focus Indicators */
*:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}
*:focus:not(:focus-visible) {
    outline: none;
}
*:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Accessibility: Visually Hidden */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-background);
}

h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.3;
}

h1 {
    font-size: 3rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h3 {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-xs);
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

img {
    max-width: 100%;
    height: auto;
}

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

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(247, 245, 240, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo:hover {
    color: var(--color-accent);
}

nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.2s ease;
}

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

nav a:hover::after {
    width: 100%;
}

/* Hero Section */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-image: 
        linear-gradient(to bottom, rgba(247, 245, 240, 0.45), rgba(247, 245, 240, 0.88)),
        url('../images/hero-path.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(247, 245, 240, 0.35) 0%,
        rgba(247, 245, 240, 0.6) 50%,
        rgba(247, 245, 240, 0.92) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.hero-content .tagline {
    font-size: 1.35rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
    line-height: 1.6;
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-accent);
    color: #FFFFFF;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.cta-button:hover {
    background-color: var(--color-accent-hover);
    color: #FFFFFF;
    transform: translateY(-2px);
}

/* Framework Section */
#framework {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

#framework h2 {
    text-align: center;
}

.framework-intro {
    max-width: 750px;
    margin: 0 auto;
    text-align: center;
}

.framework-intro p {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.framework-intro p:last-child {
    margin-bottom: 0;
}

/* Components Section */
#components {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-surface-alt);
}

#components h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.components-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.component-card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.component-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(44, 62, 45, 0.08);
}

.component-card h3 {
    color: var(--color-text-primary);
}

.component-subtitle {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--color-accent);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.component-card p:last-child {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-bottom: 0;
}

/* Approach Section */
#approach {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

#approach h2 {
    text-align: center;
}

.approach-content {
    max-width: 750px;
    margin: 0 auto;
}

.approach-text {
    text-align: center;
}

.approach-text p {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.approach-text p:first-child {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    color: var(--color-text-primary);
    font-style: italic;
}

.approach-text p:last-child {
    margin-bottom: 0;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* About Section */
#about {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

#about h2 {
    text-align: center;
}

.about-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-lg);
    align-items: start;
    max-width: 900px;
    margin: 0 auto;
}

.about-image img {
    width: 100%;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.about-text h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.about-text p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
}

.about-text p:last-child {
    color: var(--color-text-primary);
    font-weight: 500;
    font-style: italic;
    margin-bottom: 0;
}

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

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
}

.footer-text p {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    margin-bottom: 0;
    opacity: 0.9;
}

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

.footer-links a {
    color: var(--color-background);
    opacity: 0.8;
    font-size: 0.95rem;
    transition: opacity 0.2s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-background);
}

.footer-copyright p {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        font-size: 16px;
    }
    
    h1 {
        font-size: 2.25rem;
    }
    
    h2 {
        font-size: 1.65rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content .tagline {
        font-size: 1.15rem;
    }
    
    header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    nav ul {
        gap: var(--spacing-sm);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-image {
        max-width: 220px;
        margin: 0 auto;
    }
    
    .components-grid {
        grid-template-columns: 1fr;
    }
}

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


/* Accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Get Started Section */
#get-started {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-surface-alt);
}

#get-started h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.get-started-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.get-started-card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    text-align: center;
}

.get-started-card h3 {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.get-started-card > p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.get-started-card .note {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
}

.signup-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.signup-form input[type="email"] {
    padding: var(--spacing-sm);
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-background);
    color: var(--color-text-primary);
}

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

.signup-form input[type="email"]::placeholder {
    color: var(--color-text-light);
}

.signup-form .cta-button {
    border: none;
    cursor: pointer;
    font-family: var(--font-sans);
}

.age-checkbox {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
    text-align: center;
    width: 100%;
}

.age-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    cursor: pointer;
}

.age-checkbox label {
    flex-shrink: 0;
    cursor: pointer;
}

.signup-success {
    padding: var(--spacing-sm);
    background-color: var(--color-surface-alt);
    border-radius: var(--border-radius);
}

.signup-success p {
    color: var(--color-accent);
    font-size: 0.95rem;
    margin: 0;
}

.note-link {
    color: var(--color-accent);
    text-decoration: underline;
}

.note-link:hover {
    color: var(--color-accent-hover);
}

@media (max-width: 768px) {
    .get-started-grid {
        grid-template-columns: 1fr;
    }
}