/* ============================================
   HELIUM AI — DESIGN SYSTEM
   Tone: Playful/Tech with Acid Neon accents
   Fonts: Clash Display + Plus Jakarta Sans
   ============================================ */

/* CSS Variables */
:root {
    /* Colors — Acid Neon palette */
    --color-bg: #0D0D0D;
    --color-bg-elevated: #1A1A2E;
    --color-bg-card: #16162A;
    --color-accent-primary: #CCFF00;
    --color-accent-secondary: #FF3CAC;
    --color-accent-tertiary: #00F0FF;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #A0A0B0;
    --color-text-muted: #6B6B7B;
    --color-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-display: 'Clash Display', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s 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;
    font-size: 16px;
}

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

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav.scrolled {
    background: rgba(13, 13, 13, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-sm) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
}

.logo-icon {
    color: var(--color-accent-primary);
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    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: 2px;
    background: var(--color-accent-primary);
    transition: width var(--transition-base);
}

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

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

.nav-cta {
    background: var(--color-accent-primary);
    color: var(--color-bg) !important;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-weight: 600;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: var(--color-text-primary);
    transform: translateY(-2px);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--space-3xl) + 60px) 0 var(--space-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(204, 255, 0, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(255, 60, 172, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(0, 240, 255, 0.08), transparent);
}

.hero-noise {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: rgba(204, 255, 0, 0.1);
    border: 1px solid rgba(204, 255, 0, 0.2);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-lg);
    width: fit-content;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    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, 4.5rem);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-xl);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(204, 255, 0, 0.3);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    width: 100%;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-accent-primary);
}

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

.btn-ghost:hover {
    color: var(--color-text-primary);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Visual — Chat Preview */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.chat-preview {
    width: 100%;
    max-width: 420px;
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    overflow: hidden;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.chat-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--color-border);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--color-bg);
    font-size: 1.25rem;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 600;
    font-size: 0.9375rem;
}

.chat-status {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.chat-messages {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    min-height: 280px;
}

.message {
    max-width: 85%;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    line-height: 1.5;
    animation: messageSlide 0.3s ease;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-ai {
    background: rgba(204, 255, 0, 0.1);
    border: 1px solid rgba(204, 255, 0, 0.15);
    color: var(--color-text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.message-user {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-primary);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.typing {
    display: flex;
    gap: 4px;
    padding: var(--space-md);
    background: rgba(204, 255, 0, 0.05);
    width: fit-content;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

.chat-input {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.chat-input input {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    outline: none;
}

.chat-input input::placeholder {
    color: var(--color-text-muted);
}

.chat-input button {
    width: 40px;
    height: 40px;
    background: var(--color-accent-primary);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
    cursor: not-allowed;
    opacity: 0.5;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: floatCard 4s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    right: -20px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 15%;
    left: -30px;
    animation-delay: 2s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(2deg); }
}

.card-icon {
    font-size: 1rem;
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--color-text-muted);
    border-radius: 10px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: 2px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.3; }
}

/* ============================================
   SECTIONS COMMON
   ============================================ */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-md);
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
}

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

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

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(204, 255, 0, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(204, 255, 0, 0.1);
    border: 1px solid rgba(204, 255, 0, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
    background: var(--color-accent-primary);
    color: var(--color-bg);
    transform: scale(1.05);
}

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

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

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
    overflow: hidden;
}

.testimonials-carousel {
    position: relative;
}

.carousel-container {
    overflow: hidden;
    margin: 0 calc(var(--space-lg) * -1);
    padding: var(--space-md) var(--space-lg);
}

.carousel-track {
    display: flex;
    gap: var(--space-lg);
    transition: transform var(--transition-slow);
}

.testimonial-card {
    flex: 0 0 calc(33.333% - var(--space-lg) * 0.667);
    min-width: 320px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    border-color: rgba(255, 60, 172, 0.3);
    transform: translateY(-4px);
}

.testimonial-stars {
    color: var(--color-accent-primary);
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.author-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-accent-secondary), var(--color-accent-tertiary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-bg);
}

.author-name {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
}

.author-title {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Carousel Controls */
.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.carousel-btn {
    width: 48px;
    height: 48px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.carousel-btn:disabled:hover {
    background: var(--color-bg-card);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.carousel-dots {
    display: flex;
    gap: var(--space-xs);
}

.carousel-dot {
    width: 8px;
    height: 8px;
    background: var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
}

.carousel-dot.active {
    background: var(--color-accent-primary);
    width: 24px;
    border-radius: 4px;
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg) 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    align-items: start;
}

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

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
}

.pricing-popular {
    border-color: var(--color-accent-primary);
    transform: scale(1.05);
}

.pricing-popular:hover {
    transform: scale(1.05) translateY(-4px);
    border-color: var(--color-accent-primary);
    box-shadow: 0 20px 60px rgba(204, 255, 0, 0.15);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent-primary);
    color: var(--color-bg);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.pricing-name {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}

.pricing-desc {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.pricing-price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 2px;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.price-amount {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
}

.price-period {
    font-size: 1rem;
    color: var(--color-text-muted);
    align-self: flex-end;
    margin-bottom: 8px;
}

.pricing-features {
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
}

.pricing-features li.disabled {
    color: var(--color-text-muted);
}

.check {
    color: var(--color-accent-primary);
    font-weight: 700;
}

.x {
    color: var(--color-text-muted);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
    padding: var(--space-3xl) 0;
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.cta-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-md);
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 500px;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.cta-visual {
    position: relative;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cta-blob {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: blobPulse 8s ease-in-out infinite;
}

@keyframes blobPulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.4; }
}

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

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    max-width: 280px;
    margin-bottom: var(--space-lg);
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: var(--color-bg);
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

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

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

.footer-column a:hover {
    color: var(--color-accent-primary);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ============================================
   ANIMATIONS
   ============================================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0) translateX(0);
}

/* Stagger delays */
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }
[data-delay="500"] { transition-delay: 0.5s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }
    
    .hero-content {
        order: 1;
    }
    
    .hero-visual {
        order: 0;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonial-card {
        flex: 0 0 calc(50% - var(--space-lg) * 0.5);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .pricing-popular {
        transform: none;
        order: -1;
    }
    
    .pricing-popular:hover {
        transform: translateY(-4px);
    }
    
    .cta-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cta-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .cta-visual {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-bg-elevated);
        flex-direction: column;
        padding: calc(var(--space-3xl) + 60px) var(--space-xl) var(--space-xl);
        gap: var(--space-lg);
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-border);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
    }
    
    .nav-cta {
        width: 100%;
        text-align: center;
        margin-top: var(--space-md);
    }
    
    .hero {
        padding-top: calc(var(--space-2xl) + 60px);
    }
    
    .floating-card {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-card {
        flex: 0 0 100%;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-column h4 {
        margin-bottom: var(--space-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.25rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --space-3xl: 4rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .chat-preview {
        max-width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    [data-animate] {
        opacity: 1;
        transform: none;
    }
}