/* ===== CSS VARIABLES ===== */
:root {
    --bg-primary: #0F0F0F;
    --bg-surface: #1a1a1a;
    --border-color: #2d2d2d;
    --orange: #FF6B35;
    --orange-hover: #e85a28;
    --gold: #FFD700;
    --text-primary: #FFFFFF;
    --text-secondary: #A3A3A3;
    --text-muted: #737373;
    
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Roboto', 'Segoe UI', system-ui, sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    
    --transition-fast: 150ms ease;
    --transition-smooth: 300ms ease;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

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

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

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

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

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    color: var(--text-primary);
    padding: 8px;
}

.header-cta {
    background: var(--orange);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: background var(--transition-fast);
}

.header-cta:hover {
    background: var(--orange-hover);
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-close {
    position: absolute;
    top: 16px;
    right: 24px;
    color: var(--text-primary);
    padding: 8px;
}

.mobile-nav-link {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    padding: 12px 24px;
}

.mobile-nav-cta {
    background: var(--orange);
    color: var(--text-primary);
    padding: 16px 32px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    margin-top: 24px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 16px 32px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition-fast);
    min-height: 56px;
}

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

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

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

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

.btn-full {
    width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-surface) 100%);
    text-align: center;
}

.hero-headline {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subheadline {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    font-weight: 600;
    color: var(--gold);
}

.section-context {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
    padding: 80px 0;
    background: var(--bg-surface);
}

.steps {
    display: flex;
    justify-content: center;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    max-width: 280px;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--orange);
}

.step-icon svg {
    width: 100%;
    height: 100%;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.step-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-line {
    position: absolute;
    top: 32px;
    right: -40px;
    width: 40px;
    height: 2px;
    background: var(--border-color);
}

.step:last-child .step-line {
    display: none;
}

/* ===== FEATURES ===== */
.features {
    padding: 80px 0;
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 24px;
    transition: border-color var(--transition-fast);
}

.feature-card:hover {
    border-color: var(--text-secondary);
}

.feature-icon {
    width: 48px;
    height: 48px;
    color: var(--orange);
    margin-bottom: 16px;
}

.feature-icon-gold {
    color: var(--gold);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== PRICING ===== */
.pricing {
    padding: 80px 0;
    background: var(--bg-surface);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 32px;
    display: flex;
    flex-direction: column;
}

.pricing-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pricing-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
    flex-grow: 1;
}

/* ===== FAQ ===== */
.faq {
    padding: 80px 0;
    background: var(--bg-primary);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    background: transparent;
}

.faq-icon {
    font-size: 24px;
    color: var(--text-primary);
    transition: color var(--transition-fast);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-question[aria-expanded="true"] .faq-icon {
    color: var(--orange);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-fast);
}

.faq-answer.active {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== FINAL CTA ===== */
.final-cta {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-primary) 100%);
    text-align: center;
}

.final-cta .container {
    max-width: 900px;
}

.final-cta-headline {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.final-cta-subheadline {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== FOOTER ===== */
.footer {
    padding: 40px 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-heading {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.footer-link {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.social-link:hover {
    color: var(--orange);
}

.social-link svg {
    width: 100%;
    height: 100%;
}

.footer-copyright {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .steps {
        gap: 30px;
    }
    
    .step-line {
        right: -30px;
        width: 30px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .header-cta {
        display: none;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-headline {
        font-size: 36px;
    }
    
    .hero-subheadline {
        font-size: 16px;
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-ctas .btn {
        width: 100%;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step {
        max-width: 100%;
    }
    
    .step-line {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .header-container {
        padding: 16px;
    }
    
    .hero-headline {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .pricing-card {
        padding: 24px;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-secondary: #CCCCCC;
        --border-color: #555555;
    }
}