/* ============================================
   Checkout Site Styles | wetakeflight.ai
   Design system: Space Grotesk + Inter, dot grid
   ============================================ */

:root {
    /* Color Tokens — wetakeflight.ai light theme */
    --page-bg: #ffffff;
    --surface: #f8f8fa;
    --surface-low: #f0f0f4;
    --surface-mid: #f5f5f7;
    --surface-high: #eaeaee;
    --primary: #5b5dff;
    --primary-container: #8083ff;
    --on-surface: #1a1a2e;
    --on-surface-variant: #4a4a5a;
    --outline-variant: #d0d0d8;
    --grid-color: #e8e5e0;
    --grid-size: 29px;

    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;

    /* Container */
    --container-width: 1080px;
    --container-padding: 1.5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--on-surface);
    background-color: var(--page-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    opacity: 0.8;
}

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

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.15;
    color: var(--on-surface);
}

.label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 1rem;
}

.page-headline {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--space-sm);
}

.page-subhead {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--on-surface-variant);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.section-headline {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-lg);
}

/* ============================================
   Layout
   ============================================ */

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

section {
    padding: var(--space-2xl) 0;
}

/* ============================================
   Header
   ============================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--page-bg);
    border-bottom: 1px solid var(--outline-variant);
    padding: 1.5rem 0;
    transition: box-shadow var(--transition-base);
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--on-surface);
}

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

.main-nav a {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
    transition: color var(--transition-fast);
}

.main-nav a:hover {
    color: var(--primary);
    opacity: 1;
}

/* ============================================
   Page Header / Hero
   ============================================ */

.page-header {
    padding: var(--space-2xl) 0;
    background-image: radial-gradient(circle, var(--grid-color) 1px, transparent 1px);
    background-size: var(--grid-size) var(--grid-size);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.875rem 2rem;
    border-radius: 0.375rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: #ffffff;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--on-surface-variant);
    border: 1px solid var(--outline-variant);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    opacity: 1;
}

/* ============================================
   Value Props
   ============================================ */

.values {
    background-color: var(--surface);
}

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

.value-card {
    background: var(--surface-mid);
    border: 1px solid var(--outline-variant);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.value-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.value-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.value-card p {
    line-height: 1.7;
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
}

/* ============================================
   Pricing Grid
   ============================================ */

.pricing-single {
    max-width: 480px;
    margin: 0 auto;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.pricing-card {
    background: var(--surface-mid);
    border: 1px solid var(--outline-variant);
    border-radius: 0.75rem;
    padding: 2rem;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

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

.pricing-card--featured .pricing-badge {
    position: absolute;
    top: -0.75rem;
    right: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
}

.pricing-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.pricing-amount {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
}

.pricing-period {
    font-size: 0.8125rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--space-md);
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--space-md);
}

.pricing-features li {
    padding: 0.375rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
}

.pricing-features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    font-weight: 600;
    color: var(--primary);
}

.pricing-card .btn {
    width: 100%;
    text-align: center;
}

/* ============================================
   FAQ Section
   ============================================ */

.intake-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
}

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

.faq-item {
    background: var(--surface-mid);
    border: 1px solid var(--outline-variant);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

.faq-item h3 {
    font-size: 0.9375rem;
    font-family: var(--font-body);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--on-surface);
}

.faq-item p {
    line-height: 1.7;
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
}

/* Intake Sidebar */
.intake-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.reassurance {
    padding: 1.5rem;
    background: var(--surface-mid);
    border: 1px solid var(--outline-variant);
    border-radius: 0.75rem;
}

.reassurance h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.reassurance p {
    margin-bottom: var(--space-sm);
    line-height: 1.7;
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
}

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

.next-steps-list {
    list-style: none;
    counter-reset: steps;
    padding: 0;
}

.next-steps-list li {
    counter-increment: steps;
    padding: 0.375rem 0;
    padding-left: 2rem;
    position: relative;
    line-height: 1.7;
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
}

.next-steps-list li::before {
    content: counter(steps) ".";
    position: absolute;
    left: 0;
    font-weight: 600;
    color: var(--primary);
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
    background-color: var(--on-surface);
    color: #ffffff;
    text-align: center;
}

.cta-content {
    max-width: 640px;
    margin: 0 auto;
}

.cta-headline {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
    color: #ffffff;
}

.cta-text {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    color: rgba(255, 255, 255, 0.6);
}

.cta .btn {
    background: #ffffff;
    color: var(--on-surface);
}

.cta .btn:hover {
    opacity: 0.9;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    background-color: var(--on-surface);
    color: #ffffff;
    padding: var(--space-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.footer-brand .footer-logo {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: #ffffff;
}

.footer-brand .footer-tagline {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-brand .footer-tagline a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: underline;
}

.footer-brand .footer-tagline a:hover {
    color: #ffffff;
    opacity: 1;
}

/* ============================================
   Success Page
   ============================================ */

.form-success {
    max-width: 600px;
    text-align: center;
    margin: 0 auto;
    padding: var(--space-lg);
    background: var(--surface-mid);
    border: 1px solid var(--outline-variant);
    border-radius: 0.75rem;
}

.form-success h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--space-sm);
}

.form-success .success-subhead {
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    color: var(--on-surface-variant);
    line-height: 1.7;
}

.form-success .next-steps-list {
    text-align: left;
    max-width: 460px;
    margin: 0 auto var(--space-lg);
}

/* ============================================
   Animation utilities
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-animate] {
    opacity: 0;
    transform: translateY(20px);
}

[data-animate].animated {
    animation: fadeInUp 0.5s ease forwards;
}

[data-animate]:nth-child(1) { animation-delay: 0.1s; }
[data-animate]:nth-child(2) { animation-delay: 0.15s; }
[data-animate]:nth-child(3) { animation-delay: 0.2s; }
[data-animate]:nth-child(4) { animation-delay: 0.25s; }

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --space-xl: 4rem;
        --space-2xl: 5rem;
    }

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

    .intake-wrapper {
        grid-template-columns: 1fr;
    }

    .value-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .main-nav {
        gap: var(--space-sm);
    }

    .main-nav a {
        font-size: 0.8125rem;
    }
}