/* ===================================
   Design System v2: Gravitau
   =================================== */

/* -------------------
   1. Root Variables
   ------------------- */
:root {
    /* Color Palette */
    --color-bg: #FFFFFF;
    --color-text-main: #212121;
    --color-text-muted: #616161;
    --color-border: #E0E0E0;
    --color-accent: #37474F;
    --color-accent-hover: #263238; /* Darker accent for hover */
    --color-surface: #F5F5F5;

    /* Typography */
    --font-primary: 'IBM Plex Sans', sans-serif;
    --font-secondary: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 7rem;

    /* Layout */
    --container-width: 1100px;
    --border-radius: 4px;
    --transition: all 0.3s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-secondary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-main);
    background-color: var(--color-bg);
}

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

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

/* -------------------
   3. Typography
   ------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 500; /* Medium */
    color: var(--color-text-main);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 48px;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 32px;
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-family: var(--font-primary);
    font-size: 1.25rem; /* ~20px */
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 16px;
    line-height: 1.6;
}

.lead {
    font-size: 1.2rem;
    color: var(--color-text-main);
    font-weight: 500;
}

.highlight {
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--color-text-main);
}

.insight {
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    border-left: 2px solid var(--color-border);
    font-family: var(--font-primary);
    font-size: 1.25rem;
    color: var(--color-text-main);
}

.small-ui {
    font-size: 14px;
}

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

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

.section-surface {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.content-block {
    max-width: 720px; /* Reduced for readability */
}

.content-block.centered {
    margin: 0 auto;
    text-align: center;
}

/* -------------------
   5. Header & Navigation
   ------------------- */
.header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-sm) 0;
}

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

.logo img {
    height: 40px; /* Adjust as needed */
    width: auto;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-secondary);
    font-size: 14px;
    color: var(--color-text-muted);
    font-weight: 400;
}

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

.btn-nav {
    font-size: 14px;
    font-weight: 400;
    background: var(--color-surface);
    color: var(--color-accent);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.btn-nav:hover {
    background: var(--color-border);
    color: var(--color-accent);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

/* -------------------
   6. Buttons
   ------------------- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-family: var(--font-secondary);
    font-weight: 500;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-text-muted);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface);
    color: var(--color-text-main);
    border-color: var(--color-border);
}

/* -------------------
   7. Hero Section
   ------------------- */
.hero {
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

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

/* -------------------
   8. Process Steps
   ------------------- */
.process-steps {
    max-width: 720px;
    margin-top: var(--spacing-md);
}

.process-step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.process-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-bg);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 14px;
    border-radius: 50%;
}

.step-content h3 {
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    margin-bottom: 0;
}

/* -------------------
   8b. Compliance Section
   ------------------- */
.compliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.compliance-item {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.compliance-item h3 {
    margin-bottom: var(--spacing-xs);
}

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

/* -------------------
   8c. Legal Pages
   ------------------- */
.legal-content {
    max-width: 720px;
}

.legal-content h1 {
    margin-bottom: var(--spacing-xs);
}

.legal-content h2 {
    font-size: 1.25rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.legal-content h2:first-of-type {
    margin-top: var(--spacing-md);
}

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

.legal-content li {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.legal-content a {
    color: var(--color-accent);
    text-decoration: underline;
}

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

.legal-updated {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* -------------------
   9. Specific Sections
   ------------------- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.pricing-card {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.pricing-card.featured {
    border: 2px solid var(--color-accent);
}

.pricing-card .badge {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.pricing-card .features {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0;
}

.pricing-card .features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}

.pricing-card .features li:last-child {
    border-bottom: none;
}

.plan-note,
.enterprise-desc {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
}

.pricing-note {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 14px;
}

.price {
    font-family: var(--font-primary);
    font-size: 2.2rem; /* Reduced size */
    font-weight: 500;
    color: var(--color-text-main);
    margin: var(--spacing-sm) 0;
}

.price span {
    font-size: 1rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.benefit-card {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.benefit-icon {
    width: 32px;
    height: 32px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

/* -------------------
   9. Footer
   ------------------- */
.footer {
    background: var(--color-bg);
    color: var(--color-text-muted);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-brand img {
    height: 24px; /* Adjust as needed */
}

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

.footer-links a {
    font-size: 14px;
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-text-main);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    text-align: center;
    font-size: 14px;
}

/* -------------------
   9c. FAQ
   ------------------- */
.faq-list {
    max-width: 720px;
}

.faq-item {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
    padding-top: 0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    margin-bottom: var(--spacing-xs);
}

.faq-answer {
    margin-bottom: 0;
}

/* -------------------
   9d. CTA Buttons
   ------------------- */
.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 16px;
}

/* -------------------
   10. Animations & Responsive
   ------------------- */
.animated-fade-in {
    opacity: 0;
    transform: translateY(10px);
    animation: fadeIn 0.5s ease-in-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 36px; }
    h2 { font-size: 28px; }

    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .mobile-menu-toggle span {
        width: 24px;
        height: 2px;
        background: var(--color-text-main);
        transition: var(--transition);
    }

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

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .process-step {
        gap: var(--spacing-sm);
    }

    .compliance-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}