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

:root {
    /* Color Palette - Grey and Copper with Earthy Tones */
    --primary-copper: #B87333;
    --light-copper: #D4A574;
    --dark-copper: #8B5A2B;
    --charcoal: #2C3E50;
    --warm-grey: #6B7280;
    --light-grey: #F3F4F6;
    --off-white: #FEFEFE;
    --earth-brown: #8D6E63;
    --sage-green: #87A96B;
    
    /* Fibonacci-based spacing and typography */
    --spacing-xs: 0.382rem;    /* φ^-2 */
    --spacing-sm: 0.618rem;    /* φ^-1 */
    --spacing-md: 1rem;        /* φ^0 */
    --spacing-lg: 1.618rem;    /* φ^1 */
    --spacing-xl: 2.618rem;    /* φ^2 */
    --spacing-xxl: 4.236rem;   /* φ^3 */
    
    /* Typography Scale based on Golden Ratio */
    --text-xs: 0.694rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.618rem;
    --text-2xl: 2.618rem;
    --text-3xl: 4.236rem;
    
    /* Font Stack */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.618; /* Golden ratio */
    color: var(--charcoal);
    background-color: var(--off-white);
    font-size: var(--text-base);
    font-weight: 400;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.236; /* 1/φ */
    color: var(--charcoal);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--warm-grey);
}

a {
    color: var(--primary-copper);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--dark-copper);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: var(--text-base);
}

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

.btn-primary:hover {
    background-color: var(--dark-copper);
    border-color: var(--dark-copper);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-copper);
    border-color: var(--primary-copper);
}

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

/* Header & Navigation */
.header {
    background-color: var(--off-white);
    border-bottom: 1px solid var(--light-grey);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(254, 254, 254, 0.95);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    font-size: var(--text-xl);
    color: var(--primary-copper);
    font-weight: 600;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 400;
    color: var(--charcoal);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-copper);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--charcoal);
    margin: 3px 0;
    transition: var(--transition);
}

/* Main Content */
main {
    margin-top: 80px; /* Account for fixed header */
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--warm-grey);
    margin-top: var(--spacing-sm);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--off-white) 0%, var(--light-grey) 100%);
    padding: var(--spacing-xxl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.618fr 1fr; /* Golden ratio */
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    color: var(--charcoal);
}

.hero-subtitle {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-xl);
    line-height: 1.618;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Fibonacci Spiral Visual */
.fibonacci-spiral {
    width: 300px;
    height: 300px;
    position: relative;
    margin: 0 auto;
}

.fibonacci-spiral::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: conic-gradient(
        from 0deg,
        var(--light-copper) 0deg,
        var(--primary-copper) 72deg,
        var(--dark-copper) 144deg,
        var(--sage-green) 216deg,
        var(--earth-brown) 288deg,
        var(--light-copper) 360deg
    );
    border-radius: 50%;
    opacity: 0.1;
    animation: rotate 20s linear infinite;
}

.fibonacci-spiral::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border: 2px solid var(--primary-copper);
    border-radius: 50%;
    opacity: 0.3;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Mission Section */
.mission {
    background-color: var(--light-grey);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.mission-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.mission-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.card-icon {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-lg);
}

.mission-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--charcoal);
}

/* Principles Section */
.principles-content {
    display: grid;
    grid-template-columns: 1.618fr 1fr; /* Golden ratio */
    gap: var(--spacing-xxl);
    align-items: center;
}

.principle-item {
    margin-bottom: var(--spacing-xl);
}

.principle-item h3 {
    color: var(--primary-copper);
    margin-bottom: var(--spacing-sm);
}

/* Golden Ratio Grid Visual */
.golden-ratio-grid {
    width: 100%;
    height: 400px;
    position: relative;
    background: linear-gradient(45deg, var(--light-grey), var(--off-white));
    border-radius: 8px;
    overflow: hidden;
}

.golden-ratio-grid::before,
.golden-ratio-grid::after {
    content: '';
    position: absolute;
    background-color: var(--primary-copper);
    opacity: 0.1;
}

.golden-ratio-grid::before {
    top: 0;
    left: 0;
    right: 38.2%; /* φ^-1 * 100% */
    bottom: 0;
    border-right: 2px solid var(--primary-copper);
}

.golden-ratio-grid::after {
    top: 0;
    bottom: 38.2%; /* φ^-1 * 100% */
    left: 61.8%; /* φ^-1 * 100% */
    right: 0;
    border-bottom: 2px solid var(--primary-copper);
}

/* Community Section */
.community {
    background-color: var(--light-grey);
}

.community-content {
    display: grid;
    grid-template-columns: 1.618fr 1fr; /* Golden ratio */
    gap: var(--spacing-xxl);
    align-items: start;
}

.community-features {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.community-features li {
    padding: var(--spacing-sm) 0;
    position: relative;
    padding-left: var(--spacing-lg);
}

.community-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-copper);
    font-weight: bold;
}

.community-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.stat-number {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--primary-copper);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--warm-grey);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.618fr; /* Golden ratio */
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-methods {
    margin-top: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.method-icon {
    font-size: var(--text-lg);
}

/* Form Styles */
.contact-form {
    background: var(--light-grey);
    padding: var(--spacing-xl);
    border-radius: 12px;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--charcoal);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid transparent;
    background-color: white;
    border-radius: 6px;
    font-family: inherit;
    font-size: var(--text-base);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-copper);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    color: var(--light-copper);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-section a:hover {
    color: var(--light-copper);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: var(--spacing-lg) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--text-2xl);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .principles-content,
    .community-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    h1 { font-size: var(--text-2xl); }
    h2 { font-size: var(--text-xl); }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .mission-grid {
        grid-template-columns: 1fr;
    }
    
    .community-stats {
        grid-template-columns: 1fr;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .hamburger,
    .hero-visual,
    .fibonacci-spiral,
    .golden-ratio-grid {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
}