/* ===================================
   Drone Landscape - Premium Newsletter
   =================================== */

/* CSS Variables */
:root {
    /* Colors - Sophisticated Gray Palette */
    --color-bg: #f2f2f2;
    --color-bg-subtle: #e8e8e8;
    --color-bg-elevated: #ffffff;
    --color-surface: #fafafa;
    
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    --color-text-inverse: #ffffff;
    
    --color-accent: #2a2a2a;
    --color-accent-hover: #3a3a3a;
    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-subtle: rgba(0, 0, 0, 0.04);
    
    /* Shadows - Soft, Premium Feel */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.08), 0 4px 16px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.1), 0 8px 32px rgba(0, 0, 0, 0.06);
    
    /* Neumorphic Shadows */
    --shadow-neumorphic: 
        8px 8px 16px rgba(0, 0, 0, 0.06),
        -8px -8px 16px rgba(255, 255, 255, 0.8);
    --shadow-neumorphic-inset: 
        inset 4px 4px 8px rgba(0, 0, 0, 0.05),
        inset -4px -4px 8px rgba(255, 255, 255, 0.9);
    --shadow-neumorphic-button:
        6px 6px 12px rgba(0, 0, 0, 0.08),
        -6px -6px 12px rgba(255, 255, 255, 0.9),
        inset 0 0 0 rgba(0, 0, 0, 0),
        inset 0 0 0 rgba(255, 255, 255, 0);
    
    /* Typography */
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Instrument Serif', Georgia, serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Layout */
    --max-width: 1200px;
    --max-width-narrow: 800px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* ===================================
   Accessibility Utilities
   =================================== */

/* Visually Hidden - Accessible to screen readers only */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    padding: var(--space-md) var(--space-xl);
    background: var(--color-accent);
    color: var(--color-text-inverse);
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-md);
    outline: 3px solid var(--color-text-primary);
    outline-offset: 2px;
}

/* Focus Visible Styles */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Remove focus outline for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
    border: none;
    outline: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

/* ===================================
   Navigation
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) var(--space-xl);
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(242, 242, 242, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-subtle);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: -0.01em;
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-text-primary);
}

.nav-links {
    display: flex;
    gap: var(--space-2xl);
}

.nav-link {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text-primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-neumorphic-button);
    transition: var(--transition-base);
}

.nav-cta:hover {
    box-shadow: 
        4px 4px 8px rgba(0, 0, 0, 0.1),
        -4px -4px 8px rgba(255, 255, 255, 0.95);
    transform: translateY(-1px);
}

.nav-cta:active {
    box-shadow: var(--shadow-neumorphic-inset);
    transform: translateY(0);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    padding: calc(80px + var(--space-4xl)) var(--space-xl) var(--space-4xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
}

.hero-ambient {
    position: absolute;
    top: 20%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(200, 200, 200, 0.3) 0%, transparent 70%);
    pointer-events: none;
    filter: blur(60px);
}

.hero-container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xl);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
}

.title-accent {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 480px;
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
}

.hero-form {
    max-width: 440px;
}

.hero-form-wrapper {
    max-width: 440px;
}

.hero-form-wrapper .form-note {
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    padding-left: var(--space-lg);
}

/* ===================================
   ConvertKit Form Styling
   =================================== */
.formkit-form[data-uid="3e77fa8ada"] {
    max-width: 100% !important;
    font-family: var(--font-sans) !important;
}

.formkit-form[data-uid="3e77fa8ada"] [data-style="clean"] {
    padding: 0 !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-fields {
    display: flex !important;
    align-items: center !important;
    background: var(--color-bg-elevated) !important;
    border-radius: var(--radius-full) !important;
    padding: 6px 6px 6px 24px !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.06) !important;
    transition: var(--transition-base) !important;
    flex-wrap: nowrap !important;
    margin: 0 !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-fields:focus-within {
    border-color: rgba(0, 0, 0, 0.2) !important;
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.08),
        0 0 0 3px rgba(42, 42, 42, 0.08) !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-field {
    flex: 1 1 auto !important;
    margin: 0 !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-input {
    width: 100% !important;
    padding: var(--space-md) 0 !important;
    font-size: 0.9375rem !important;
    font-family: var(--font-sans) !important;
    background: transparent !important;
    color: var(--color-text-primary) !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    outline: none !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-input:focus {
    outline: none !important;
    border: none !important;
    box-shadow: none !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-input::placeholder {
    color: var(--color-text-tertiary) !important;
    opacity: 1 !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-submit {
    flex: 0 0 auto !important;
    display: flex !important;
    align-items: center !important;
    gap: var(--space-sm) !important;
    padding: 0 !important;
    background: var(--color-accent) !important;
    color: var(--color-text-inverse) !important;
    font-size: 0.875rem !important;
    font-weight: 500 !important;
    font-family: var(--font-sans) !important;
    border-radius: var(--radius-full) !important;
    transition: var(--transition-base) !important;
    white-space: nowrap !important;
    margin: 0 !important;
    overflow: visible !important;
    border: none !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-submit > span {
    padding: var(--space-md) var(--space-lg) !important;
    display: flex !important;
    align-items: center !important;
    gap: var(--space-sm) !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-submit > span::after {
    content: '';
    display: inline-block;
    width: 18px;
    height: 18px;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 10H16M16 10L11 5M16 10L11 15' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    transition: transform var(--transition-fast);
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-submit:hover {
    background: var(--color-accent-hover) !important;
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-submit:hover > span::after {
    transform: translateX(3px);
}

.formkit-form[data-uid="3e77fa8ada"] .formkit-spinner {
    position: absolute !important;
}

/* Hide the "Built with Kit" branding */
.formkit-form[data-uid="3e77fa8ada"] .formkit-powered-by-convertkit-container {
    display: none !important;
}

/* Alert styling */
.formkit-form[data-uid="3e77fa8ada"] .formkit-alert {
    border-radius: var(--radius-md) !important;
    font-family: var(--font-sans) !important;
    font-size: 0.875rem !important;
    margin: var(--space-md) 0 0 0 !important;
}

/* ===================================
   ConvertKit Form - CTA Dark Variant
   =================================== */
.cta-form-wrapper {
    max-width: 480px;
    margin: 0 auto;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-fields {
    background: rgba(255, 255, 255, 0.1) !important;
    box-shadow: 
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.2) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-fields:focus-within {
    box-shadow: 
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.2),
        0 0 0 3px rgba(255, 255, 255, 0.15) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-input {
    color: var(--color-text-inverse) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-input::placeholder {
    color: rgba(255, 255, 255, 0.5) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-submit {
    background: var(--color-bg-elevated) !important;
    color: var(--color-text-primary) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-submit:hover {
    background: var(--color-bg) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-submit > span::after {
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 10H16M16 10L11 5M16 10L11 15' stroke='%231a1a1a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-alert-success {
    background: rgba(211, 251, 235, 0.9) !important;
}

.cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-alert-error {
    background: rgba(253, 232, 226, 0.9) !important;
}

.form-input-wrapper {
    display: flex;
    align-items: center;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-full);
    padding: 6px 6px 6px 24px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.06);
    transition: var(--transition-base);
}

.form-input-wrapper:focus-within {
    border-color: rgba(0, 0, 0, 0.2);
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.08),
        0 0 0 3px rgba(42, 42, 42, 0.08);
}

.form-input {
    flex: 1;
    padding: var(--space-md) 0;
    font-size: 0.9375rem;
    background: transparent;
    color: var(--color-text-primary);
}

.form-input:focus,
.form-input:focus-visible {
    outline: none;
}

.form-input::placeholder {
    color: var(--color-text-tertiary);
}

.form-button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-accent);
    color: var(--color-text-inverse);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    white-space: nowrap;
}

.form-button svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.form-button:hover {
    background: var(--color-accent-hover);
}

.form-button:hover svg {
    transform: translateX(3px);
}

.form-note {
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    padding-left: var(--space-lg);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 520px;
}

.hero-image {
    width: 100%;
    height: auto;
    object-fit: contain;
}

/* ===================================
   Features Section
   =================================== */
.features {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg-subtle);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

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

.feature-card {
    padding: var(--space-2xl);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neumorphic);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        12px 12px 24px rgba(0, 0, 0, 0.08),
        -12px -12px 24px rgba(255, 255, 255, 0.9);
}

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

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.feature-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===================================
   Archive Section
   =================================== */
.archive {
    padding: var(--space-4xl) var(--space-xl);
}

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

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

.archive-card {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.archive-card-link {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-xl);
    align-items: center;
    padding: var(--space-xl) var(--space-2xl);
    text-decoration: none;
    color: inherit;
    border-radius: var(--radius-lg);
}

.archive-card-link:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.archive-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.archive-number {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-style: italic;
    color: var(--color-text-tertiary);
    min-width: 60px;
}

.archive-content {
    flex: 1;
}

.archive-date {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
    display: block;
}

.archive-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.archive-excerpt {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.archive-action {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: 50%;
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-neumorphic-button);
    transition: var(--transition-base);
}

.archive-action svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.archive-card:hover .archive-action {
    color: var(--color-text-primary);
}

.archive-card:hover .archive-action svg {
    transform: translateX(3px);
}

/* ===================================
   Bonus Section
   =================================== */
.bonus {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg-subtle);
}

.bonus-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.bonus-content .section-label {
    text-align: left;
}

.bonus-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    margin-bottom: var(--space-xl);
    line-height: 1.2;
}

.bonus-title em {
    font-family: var(--font-serif);
    font-style: italic;
}

.bonus-text {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

/* Bonus Visual */
.bonus-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Bonus CTA Button */
.bonus-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-accent);
    color: var(--color-text-inverse);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.bonus-cta svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.bonus-cta:hover {
    background: var(--color-accent-hover);
}

.bonus-cta:hover svg {
    transform: translateX(4px);
}

/* PDF Card Visual */
.pdf-card {
    position: relative;
    width: 380px;
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.15),
        0 12px 24px -8px rgba(0, 0, 0, 0.1);
    padding: var(--space-3xl);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.pdf-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 30px 60px -12px rgba(0, 0, 0, 0.18),
        0 18px 36px -8px rgba(0, 0, 0, 0.12);
}

.pdf-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
}

.pdf-card-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-subtle);
    border-radius: var(--radius-full);
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.pdf-card-logo {
    width: 28px;
    height: 28px;
    color: var(--color-text-tertiary);
}

.pdf-card-title {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    font-weight: 400;
    line-height: 1.25;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xl);
}

.pdf-card-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.pdf-card-list li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.check-box {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-text-tertiary);
    border-radius: 4px;
    background: var(--color-bg-elevated);
    position: relative;
}

.check-box::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 5px;
    height: 9px;
    border: solid var(--color-text-tertiary);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.pdf-card-footer {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-text-tertiary);
}

/* ===================================
   CTA Section
   =================================== */
.cta {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-accent);
    position: relative;
    overflow: hidden;
}

.cta-ambient {
    position: absolute;
    bottom: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.cta-container {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    color: var(--color-text-inverse);
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.cta-subtitle {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-2xl);
}

.cta-form {
    max-width: 480px;
    margin: 0 auto;
}

.form-input-wrapper--dark {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-input-wrapper--dark:focus-within {
    box-shadow: 
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.2),
        0 0 0 3px rgba(255, 255, 255, 0.15);
}

.form-input--dark {
    color: var(--color-text-inverse);
}

.form-input--dark::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-button--light {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
}

.form-button--light:hover {
    background: var(--color-bg);
}

.cta-note {
    margin-top: var(--space-lg);
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--space-4xl) var(--space-xl) var(--space-2xl);
    background: var(--color-bg);
}

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

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-4xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
}

.footer-logo .logo-icon {
    width: 24px;
    height: 24px;
}

.footer-tagline {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
}

.footer-nav-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-lg);
}

.footer-nav-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-nav-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-link {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-2xl);
}

.footer-copyright {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
}

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

.footer-legal-link {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.footer-legal-link:hover {
    color: var(--color-text-primary);
}

/* ===================================
   Modal
   =================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 400px;
    padding: var(--space-3xl);
    background: var(--color-bg-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #dcfce7;
    border-radius: 50%;
    color: #22c55e;
}

.modal-icon svg {
    width: 32px;
    height: 32px;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.modal-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.modal-button {
    width: 100%;
    padding: var(--space-md) var(--space-xl);
    background: var(--color-accent);
    color: var(--color-text-inverse);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.modal-button:hover {
    background: var(--color-accent-hover);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
        min-height: auto;
        padding-top: calc(80px + var(--space-3xl));
    }
    
    .hero-visual {
        display: none;
    }
    
    .features-grid {
        gap: var(--space-2xl);
    }
    
    .bonus-container {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }
    
    .bonus-visual {
        order: -1;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }
}

@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .form-input-wrapper {
        flex-direction: column;
        padding: var(--space-lg);
        border-radius: var(--radius-lg);
        gap: var(--space-md);
    }
    
    .form-input {
        width: 100%;
        text-align: center;
    }
    
    .form-button {
        width: 100%;
        justify-content: center;
    }
    
    .form-note {
        padding-left: 0;
        text-align: center;
    }
    
    /* ConvertKit Form Mobile Styles */
    .hero-form-wrapper .form-note {
        padding-left: 0;
        text-align: center;
    }
    
    .formkit-form[data-uid="3e77fa8ada"] .formkit-fields {
        flex-direction: column !important;
        padding: var(--space-lg) !important;
        border-radius: var(--radius-lg) !important;
        gap: var(--space-md) !important;
    }
    
    .formkit-form[data-uid="3e77fa8ada"] .formkit-field {
        width: 100% !important;
    }
    
    .formkit-form[data-uid="3e77fa8ada"] .formkit-input {
        text-align: center !important;
        padding: var(--space-sm) 0 !important;
    }
    
    .formkit-form[data-uid="3e77fa8ada"] .formkit-submit {
        width: 100% !important;
        justify-content: center !important;
    }
    
    .formkit-form[data-uid="3e77fa8ada"] .formkit-submit > span {
        width: 100% !important;
        justify-content: center !important;
    }
    
    /* CTA Form Mobile */
    .cta-form-wrapper .formkit-form[data-uid="3e77fa8ada"] .formkit-fields {
        flex-direction: column !important;
        padding: var(--space-lg) !important;
        border-radius: var(--radius-lg) !important;
        gap: var(--space-md) !important;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .archive-card {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .archive-number {
        font-size: 1.5rem;
    }
    
    .archive-action {
        display: none;
    }
    
    .bonus-content {
        text-align: center;
    }
    
    .pdf-card {
        width: 320px;
        padding: var(--space-2xl);
        padding-top: 0;
    }
    
    .pdf-card-title {
        font-size: 1.5rem;
    }
    
    
    .footer-nav {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    :root {
        --space-4xl: 3rem;
        --space-3xl: 2.5rem;
    }
    
    .nav {
        padding: var(--space-md);
    }
    
    .hero,
    .features,
    .archive,
    .about,
    .cta,
    .footer {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }
    
    .feature-card {
        padding: var(--space-xl);
    }
    
    .archive-card {
        padding: var(--space-lg);
    }
    
    .visual-element {
        width: 240px;
        height: 240px;
    }
}

/* ===================================
   Animations & Utilities
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --color-border: rgba(0, 0, 0, 0.3);
        --color-text-secondary: #4a4a4a;
        --color-text-tertiary: #5a5a5a;
    }
    
    .form-input-wrapper {
        border-width: 2px;
    }
    
    .feature-card,
    .archive-card,
    .pdf-card {
        border: 2px solid var(--color-border);
    }
    
    .nav-link::after {
        height: 2px;
    }
}

/* Forced Colors Mode (Windows High Contrast) */
@media (forced-colors: active) {
    .form-button,
    .nav-cta,
    .bonus-cta,
    .modal-button {
        border: 2px solid currentColor;
    }
    
    .feature-icon,
    .archive-action,
    .modal-icon {
        forced-color-adjust: none;
    }
}

/* Smooth reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations */
.stagger > * {
    opacity: 0;
    transform: translateY(20px);
}

.stagger.active > * {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.active > *:nth-child(1) { transition-delay: 0.1s; }
.stagger.active > *:nth-child(2) { transition-delay: 0.2s; }
.stagger.active > *:nth-child(3) { transition-delay: 0.3s; }
.stagger.active > *:nth-child(4) { transition-delay: 0.4s; }
.stagger.active > *:nth-child(5) { transition-delay: 0.5s; }
.stagger.active > *:nth-child(6) { transition-delay: 0.6s; }

/* ===================================
   Legal Pages (Privacy & Terms)
   =================================== */
.nav--legal {
    background: rgba(242, 242, 242, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-subtle);
}

.legal-content {
    padding: calc(80px + var(--space-4xl)) var(--space-xl) var(--space-4xl);
}

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

.legal-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid var(--color-border);
}

.legal-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.legal-updated {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.legal-updated time {
    color: var(--color-text-secondary);
}

.legal-body {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--color-text-secondary);
}

.legal-body section {
    margin-bottom: var(--space-3xl);
}

.legal-body section:last-of-type {
    margin-bottom: 0;
}

.legal-body h2 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    padding-top: var(--space-md);
}

.legal-body h3 {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.legal-body p {
    margin-bottom: var(--space-md);
}

.legal-body ul {
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
}

.legal-body li {
    margin-bottom: var(--space-sm);
    position: relative;
}

.legal-body li::marker {
    color: var(--color-text-tertiary);
}

.legal-body strong {
    color: var(--color-text-primary);
    font-weight: 500;
}

.legal-body a {
    color: var(--color-text-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

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

.legal-body address {
    font-style: normal;
    padding: var(--space-lg);
    background: var(--color-bg-subtle);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

.legal-footer {
    margin-top: var(--space-4xl);
    padding-top: var(--space-3xl);
    border-top: 1px solid var(--color-border);
}

.legal-back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.legal-back svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.legal-back:hover {
    color: var(--color-text-primary);
}

.legal-back:hover svg {
    transform: translateX(-4px);
}

/* Legal Pages Responsive */
@media (max-width: 768px) {
    .legal-content {
        padding-top: calc(80px + var(--space-3xl));
    }
    
    .legal-header {
        margin-bottom: var(--space-3xl);
        padding-bottom: var(--space-2xl);
    }
    
    .legal-body h2 {
        font-size: 1.25rem;
    }
    
    .legal-body h3 {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .legal-content {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }
    
    .legal-body {
        font-size: 0.9375rem;
    }
    
    .legal-body ul {
        padding-left: var(--space-lg);
    }
}