/* ===== DESIGN SYSTEM ===== */
:root {
    /* Colors */
    --color-bg: #0a0a0b;
    --color-bg-secondary: #111113;
    --color-bg-card: #161618;
    --color-bg-card-hover: #1c1c1f;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    
    --color-text: #f5f5f7;
    --color-text-secondary: #8e8e93;
    --color-text-muted: #636366;
    
    --color-emerald: #2ed573;
    --color-emerald-light: #7bed9f;
    --color-emerald-dark: #1e9d52;
    --color-emerald-glow: rgba(46, 213, 115, 0.15);
    --color-emerald-glow-strong: rgba(46, 213, 115, 0.3);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;
    
    /* 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;
    --space-5xl: 8rem;
    
    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-glow: 0 0 60px rgba(46, 213, 115, 0.15);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}


/* ===== RESET & BASE ===== */
*, *::before, *::after {
    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-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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


/* ===== UTILITY ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section {
    padding: var(--space-5xl) 0;
}

.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-emerald-light), var(--color-emerald), var(--color-emerald-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-italic {
    font-style: italic;
}


/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    width: max-content;
    max-width: 90%;
    animation: nav-slide-down 0.6s ease-out;
}

@keyframes nav-slide-down {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.nav-inner {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: 10px var(--space-lg);
    background: rgba(22, 22, 24, 0.8);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--font-size-lg);
    white-space: nowrap;
}

.nav-logo .logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-emerald), var(--color-emerald-dark));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

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

.nav-links a {
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
    padding: 8px 20px;
    background: var(--color-emerald);
    color: var(--color-bg) !important;
    font-weight: 600;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-cta:hover {
    background: var(--color-emerald-light) !important;
    transform: scale(1.02);
}


/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-5xl) var(--space-xl) var(--space-4xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-emerald-glow) 0%, transparent 70%);
    pointer-events: none;
    animation: hero-glow 6s ease-in-out infinite alternate;
}

@keyframes hero-glow {
    0% { opacity: 0.4; transform: translateX(-50%) scale(1); }
    100% { opacity: 0.7; transform: translateX(-50%) scale(1.15); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 16px;
    background: var(--color-emerald-glow);
    border: 1px solid rgba(46, 213, 115, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-emerald-light);
    margin-bottom: var(--space-xl);
    animation: fade-in-up 0.6s ease-out 0.2s both;
}

.hero-badge .badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-emerald);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    animation: fade-in-up 0.6s ease-out 0.3s both;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.6;
    animation: fade-in-up 0.6s ease-out 0.4s both;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-4xl);
    animation: fade-in-up 0.6s ease-out 0.5s both;
}

.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 32px;
    background: var(--color-emerald);
    color: var(--color-bg);
    font-weight: 700;
    font-size: var(--font-size-base);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: conic-gradient(
        var(--color-emerald-light),
        var(--color-emerald),
        #00d2ff,
        var(--color-emerald-light),
        var(--color-emerald)
    );
    border-radius: inherit;
    z-index: -2;
    animation: spin-gradient 3s linear infinite;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 2px;
    background: var(--color-emerald);
    border-radius: inherit;
    z-index: -1;
}

@keyframes spin-gradient {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(46, 213, 115, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 32px;
    background: transparent;
    color: var(--color-text);
    font-weight: 600;
    font-size: var(--font-size-base);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    border-color: var(--color-border-hover);
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}

.hero-image {
    position: relative;
    max-width: 480px;
    width: 100%;
    animation: fade-in-up 0.8s ease-out 0.6s both;
}

.hero-image img {
    border-radius: var(--radius-xl);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.06),
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 80px rgba(46, 213, 115, 0.1);
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(180deg, rgba(46, 213, 115, 0.2), transparent 60%);
    border-radius: var(--radius-xl);
    z-index: -1;
}


/* ===== FEATURES OVERVIEW ===== */
.features-overview {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

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

.feature-card {
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--color-emerald-glow);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: var(--space-lg);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}


/* ===== FEATURE SHOWCASE (Zig-Zag) ===== */
.feature-showcase {
    position: relative;
}

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

.section-label {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-emerald);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 560px;
    margin: var(--space-md) auto 0;
}

.showcase-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    margin-bottom: var(--space-5xl);
}

.showcase-item:nth-child(even) {
    direction: rtl;
}

.showcase-item:nth-child(even) > * {
    direction: ltr;
}

.showcase-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.showcase-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-emerald-glow);
    border: 1px solid rgba(46, 213, 115, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-emerald);
}

.showcase-content h3 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.showcase-content p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.7;
}

.showcase-features-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    list-style: none;
}

.showcase-features-list li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.showcase-features-list li .check {
    color: var(--color-emerald);
    font-weight: 700;
}

.showcase-image {
    position: relative;
}

.showcase-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
}


/* ===== PRICING ===== */
.pricing {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

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

.pricing-card {
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.pricing-card.recommended {
    border-color: rgba(46, 213, 115, 0.3);
    box-shadow: var(--shadow-glow);
}

.pricing-card.recommended::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-emerald-light), var(--color-emerald), var(--color-emerald-dark));
}

.pricing-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-emerald-glow);
    border: 1px solid rgba(46, 213, 115, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-emerald);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.pricing-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.pricing-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    margin-bottom: var(--space-xl);
}

.pricing-price .amount {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.pricing-price .period {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.pricing-features li .check {
    color: var(--color-emerald);
    font-size: 16px;
    font-weight: 700;
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 14px;
    text-align: center;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

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

.pricing-btn.primary:hover {
    background: var(--color-emerald-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(46, 213, 115, 0.3);
}

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

.pricing-btn.secondary:hover {
    border-color: var(--color-border-hover);
    background: rgba(255, 255, 255, 0.04);
}


/* ===== FAQ ===== */
.faq-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}

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

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-lg) var(--space-xl);
    background: var(--color-bg-card);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-bg-card-hover);
}

.faq-question .icon {
    font-size: 20px;
    color: var(--color-text-muted);
    transition: transform var(--transition-base);
    flex-shrink: 0;
    margin-left: var(--space-md);
}

.faq-item.open .faq-question .icon {
    transform: rotate(45deg);
    color: var(--color-emerald);
}

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

.faq-answer-inner {
    padding: 0 var(--space-xl) var(--space-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}


/* ===== CTA ===== */
.cta-section {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(circle, var(--color-emerald-glow) 0%, transparent 70%);
    pointer-events: none;
}

.cta-section h2 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.cta-section p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 480px;
    margin: 0 auto var(--space-2xl);
}


/* ===== FOOTER ===== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: var(--space-4xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    max-width: 260px;
    margin-top: var(--space-md);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: var(--space-4xl);
}

.footer-col h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

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

.footer-col a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.footer-socials {
    display: flex;
    gap: var(--space-md);
}

.footer-socials a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    font-size: var(--font-size-lg);
}

.footer-socials a:hover {
    color: var(--color-emerald);
}


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

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


/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: var(--font-size-5xl);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .showcase-item {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .showcase-item:nth-child(even) {
        direction: ltr;
    }
}

@media (max-width: 768px) {
    .nav-inner {
        padding: 8px var(--space-md);
        gap: var(--space-sm);
    }
    
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .footer-inner {
        flex-direction: column;
        gap: var(--space-2xl);
    }
    
    .footer-links {
        gap: var(--space-2xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .section {
        padding: var(--space-3xl) 0;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: var(--font-size-3xl);
    }
    
    .container {
        padding: 0 var(--space-md);
    }
}