/* =========================================================================
   AXIA | DESIGN SYSTEM & STYLES (MODERN MINIMALISM + TECH)
   ========================================================================= */

:root {
    /* Color Palette derived from brand constraints (calm, natural + tech, clear contrast) */
    --color-bg-primary: #fcfbfa; /* Soft off-white, very organic */
    --color-bg-secondary: #f2efe9; /* Light sand/stone gray for sections */
    --color-surface: #ffffff;
    
    --color-text-primary: #121212; /* Deep charcoal (not harsh black) */
    --color-text-secondary: #5e5c57; /* Muted gray-brown */
    --color-text-light: #fcfbfa;
    
    --color-dark-bg: #1c1c1a; /* Very dark warm gray */
    --color-dark-surface: #2b2b29;
    
    --color-accent: #6b705c; /* Subdued sage/olive green - calmness/nature */
    --color-accent-hover: #525746;
    --color-accent-light: #e6e8e3;
    
    --color-border: #e3dfd5;
    --color-border-dark: #3a3a38;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;   /* 8px */
    --space-sm: 1rem;     /* 16px */
    --space-md: 2rem;     /* 32px */
    --space-lg: 4rem;     /* 64px */
    --space-xl: 8rem;     /* 128px */
    
    /* Layout */
    --container-max: 1200px;
    --container-pad: 2rem;

    /* Transistions & Shadows */
    --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 20px 48px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.04);
}

/* =========================================================================
   RESET & BASE STYLES
   ========================================================================= */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

p {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

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

img, svg {
    max-width: 100%;
    display: block;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.section {
    padding: var(--space-xl) 0;
}

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

/* =========================================================================
   COMPONENTS
   ========================================================================= */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 99px; /* Pill shape for contemporary look */
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(107, 112, 92, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--color-text-primary);
    color: var(--color-text-light);
}

.btn-text {
    padding: 0.875rem 1rem;
    color: var(--color-text-secondary);
    border-radius: 4px;
}

.btn-text:hover {
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: 99px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
    letter-spacing: 0.02em;
}

/* Form Inputs */
.input-modern {
    padding: 1rem 1.5rem;
    border-radius: 99px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    font-family: var(--font-sans);
    font-size: 1rem;
    width: 100%;
    max-width: 320px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-modern:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* =========================================================================
   LAYOUT SECTIONS
   ========================================================================= */

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-md) 0;
    z-index: 1000;
    transition: padding var(--transition-fast), background-color var(--transition-fast), backdrop-filter var(--transition-fast), box-shadow var(--transition-fast);
}

.navbar.scrolled {
    padding: var(--space-sm) 0;
    background-color: rgba(252, 251, 250, 0.85); /* Frost effect */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--color-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

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

/* Mobile Nav Toggle visibility */
@media (max-width: 768px) {
    .nav-links, .nav-cta {
        display: none;
    }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
    font-weight: 400; /* Distinct typographic feel */
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.35rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 680px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* Abstract visuals in background to signify "digital intelligence" */
.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 60vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    opacity: 0.5;
}

.abstract-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--color-accent-light), transparent);
    top: 10%;
    right: -100px;
    animation: float 20s infinite alternate ease-in-out;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(to bottom right, #eceade, transparent);
    bottom: 20%;
    right: 20%;
    animation: float-delayed 25s infinite alternate ease-in-out;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-50px, 30px) scale(1.1); }
}

@keyframes float-delayed {
    0% { transform: translate(0, 0) scale(1.1); }
    100% { transform: translate(60px, -50px) scale(1); }
}

/* The Problem / Thesis */
.section-dark {
    background-color: var(--color-dark-bg);
    color: var(--color-text-light);
}

.section-dark p {
    color: #a3a3a0;
}

.thesis-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.divider {
    width: 40px;
    height: 2px;
    background-color: var(--color-accent);
    margin: var(--space-md) 0;
}

.thesis-text h2 {
    font-size: clamp(2rem, 3vw, 2.5rem);
    font-weight: 400;
}

.thesis-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.issue-card {
    background-color: var(--color-dark-surface);
    padding: var(--space-md);
    border-radius: 12px;
    border: 1px solid var(--color-border-dark);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.issue-card:hover {
    transform: translateX(-8px);
    border-color: #555550;
}

.issue-number {
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 5rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
}

.issue-card h3 {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.issue-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

@media (max-width: 992px) {
    .thesis-container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* Pillars Grid */
.section-header {
    max-width: 700px;
    margin: 0 auto var(--space-xl);
}

.section-label {
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    display: block;
    margin-bottom: var(--space-sm);
}

.section-header .section-title {
    font-size: clamp(2.5rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
    font-weight: 400;
}

.section-subtitle {
    font-size: 1.125rem;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.pillar-card {
    background-color: var(--color-surface);
    padding: var(--space-lg) var(--space-md);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pillar-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.pillar-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-bg-secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.pillar-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.pillar-list {
    margin-top: auto; /* Push to bottom */
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.pillar-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: var(--space-xs);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.pillar-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

@media (max-width: 992px) {
    .pillars-grid {
        grid-template-columns: 1fr;
    }
}

/* Ecosystem Section */
.ecosystem-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-xl);
    align-items: center;
}

.ecosystem-info .section-title {
    font-size: clamp(2.5rem, 4vw, 3rem);
    margin-bottom: var(--space-md);
    font-weight: 400;
}

.section-lead {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.ecosystem-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.product-item {
    padding: var(--space-md);
    border-radius: 12px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: var(--transition-fast);
}

.product-item:hover {
    border-color: var(--color-accent);
}

.product-item.premium {
    background-color: var(--color-bg-secondary);
    border-color: transparent;
}

.product-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
    background-color: var(--color-border);
    color: var(--color-text-secondary);
}

.product-badge.secondary {
    background-color: #e2e5de;
    color: var(--color-text-primary);
}

.product-badge.dark {
    background-color: var(--color-text-primary);
    color: var(--color-text-light);
}

.product-title {
    font-size: 1.35rem;
    margin-bottom: var(--space-xs);
}

.product-item p {
    margin-bottom: 0;
}

.product-item .btn {
    margin-top: var(--space-sm);
}

@media (max-width: 992px) {
    .ecosystem-layout {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* Final CTA Section */
.bg-gradient {
    background: linear-gradient(to bottom, var(--color-bg-primary), #eeede0);
}

.cta-container {
    max-width: 600px;
    margin: 0 auto;
}

.cta-container h2 {
    font-size: clamp(2rem, 3.5vw, 2.5rem);
    margin-bottom: var(--space-sm);
    font-weight: 400;
}

.newsletter-form {
    display: flex;
    gap: var(--space-xs);
    justify-content: center;
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.cta-footnote {
    font-size: 0.85rem;
}

@media (max-width: 576px) {
    .newsletter-form {
        flex-direction: column;
        align-items: center;
    }
    .newsletter-form .input-modern, .newsletter-form .btn {
        width: 100%;
        max-width: 100%;
    }
}

/* Footer */
.footer {
    background-color: var(--color-dark-bg);
    color: var(--color-text-light);
    padding-top: var(--space-xl);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border-dark);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.footer-brand p {
    color: #a3a3a0;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.footer-col h4 {
    color: var(--color-text-light);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.footer-col a {
    display: block;
    color: #a3a3a0;
    margin-bottom: var(--space-xs);
    font-size: 0.95rem;
}

.footer-col a:hover {
    color: var(--color-text-light);
}

.footer-bottom {
    padding: var(--space-md) var(--container-pad);
    text-align: center;
    color: #7a7a78;
    font-size: 0.85rem;
}

/* =========================================================================
   ANIMATIONS & EFFECTS
   ========================================================================= */

.scroll-reveal {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, visibility 0.8s;
    will-change: opacity, visibility, transform;
}

.scroll-reveal.active {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.fade-up {
    transform: translateY(40px);
}

.fade-right {
    transform: translateX(-40px);
}

.fade-left {
    transform: translateX(40px);
}