/* 
  Cadenzia Design System
  Inspired by modern, minimalist, human-centric design (buildermethods.com vibe)
*/

:root {
    /* Color Palette */
    --color-bg-primary: #fcfbf7; /* Warm Champagne/Off-white */
    --color-bg-secondary: #f4f3ec; /* Slightly darker warm off-white for contrast sections */
    
    --color-text-primary: #1e293b; /* Very dark slate */
    --color-text-secondary: #475569; /* Softer slate for body */
    --color-text-muted: #94a3b8;
    
    --color-accent-primary: #d4af37; /* Muted Gold / Brass */
    --color-accent-primary-hover: #b5952f;
    
    --color-accent-secondary: #0f172a; /* Deep Navy for secondary CTA or dark elements */
    --color-accent-secondary-hover: #1e293b;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1.125rem; /* Slightly larger base size for readability */
    --text-lg: 1.25rem;
    --text-xl: 1.5rem;
    --text-2xl: 2rem;
    --text-3xl: 2.5rem;
    --text-4xl: 3.5rem;
    --text-5xl: 4.5rem;
    
    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 8rem; /* Massive vertical spacing */
    
    /* Borders & Decor */
    --radius-md: 8px;
    --radius-lg: 12px;
    --border-color: #e2e8f0;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-size: var(--text-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); margin-bottom: var(--space-lg); }
h3 { font-size: var(--text-2xl); margin-bottom: var(--space-md); }

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.text-center { text-align: center; }
.text-accent { color: var(--color-accent-primary); }
.bg-alt { background-color: var(--color-bg-secondary); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: var(--text-sm);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: var(--text-base);
}

.btn-primary {
    background-color: var(--color-accent-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-accent-primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(0,0,0,0.03);
    border-color: var(--color-text-primary);
}

/* Header */
.site-header {
    padding: var(--space-lg) 0;
    position: sticky;
    top: 0;
    background-color: rgba(252, 251, 247, 0.9);
    backdrop-filter: blur(8px);
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.site-header.scrolled {
    border-bottom-color: var(--border-color);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--color-accent-secondary);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
}

.main-nav a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: var(--transition-fast);
}

/* General Section Styling */
.section-padding {
    padding: var(--space-2xl) 0;
}

.section-illustration {
    max-width: 200px; /* Minimalist size */
    margin: 0 auto var(--space-lg) auto;
    display: block;
    opacity: 0.9;
}

.section-desc {
    max-width: 600px;
    margin: 0 auto var(--space-xl) auto;
    font-size: var(--text-lg);
}

/* Hero Section */
.hero {
    padding: 3rem 0 2rem 0; /* Minimal padding to force above fold */
    text-align: center;
}

.hero-illustration {
    max-width: 140px; /* Smaller */
    margin-bottom: var(--space-sm);
}

.hero-subtitle {
    max-width: 700px;
    margin: var(--space-sm) auto var(--space-md) auto; /* Tighter margins */
    font-size: var(--text-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.service-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-4px);
}

.service-icon {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent-primary);
    display: inline-block;
    padding-bottom: 4px;
}

.service-card h3 {
    font-size: var(--text-xl);
}

/* Expertise Section */
.expertise-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.expertise-text p {
    font-size: var(--text-lg);
    margin-bottom: var(--space-lg);
}

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

.expertise-list li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    font-weight: 500;
}

.expertise-list svg {
    color: var(--color-accent-primary);
}

/* Contact / Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: var(--space-sm);
}

.large-input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: var(--text-base);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-family: inherit;
    background-color: transparent;
    transition: border-color var(--transition-fast);
}

.large-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

/* Footer */
.site-footer {
    padding: var(--space-2xl) 0 var(--space-lg) 0;
    background-color: var(--color-accent-secondary);
    color: rgba(255,255,255,0.7);
}

.site-footer h4 {
    color: #fff;
    margin-bottom: var(--space-md);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.site-footer a {
    color: rgba(255,255,255,0.7);
}

.site-footer a:hover {
    color: #fff;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand .logo {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.04em;
}

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

.footer-links li {
    margin-bottom: var(--space-sm);
}

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

/* Animations */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, visibility;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
}

/* Responsive */
@media (max-width: 900px) {
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
    
    .hero { padding: 4rem 0 3rem 0; }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .expertise-split {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    .expertise-text { order: 2; }
    .expertise-visual { order: 1; }
    
    .footer-inner {
        grid-template-columns: 1fr;
    }
    
    .form-group {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .main-nav, .header-cta {
        display: none; /* simple mobile menu hiding for now */
    }
    .mobile-toggle {
        display: flex;
    }
    .hero-actions {
        flex-direction: column;
    }
}