/* ============================================
   LIO LANDING PAGE - STYLES
   ============================================ */

:root {
    /* Colors */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-card: #18181b;
    --bg-card-hover: #1f1f23;
    
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
    
    --border-color: #27272a;
    --border-color-light: #3f3f46;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ============================================
   RESET & BASE
   ============================================ */

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

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;
}

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

/* ============================================
   UTILITIES
   ============================================ */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 24px;
}

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(139, 92, 246, 0.4);
}

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 1.0625rem;
}

.btn-full {
    width: 100%;
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.btn-nav {
    padding: 10px 20px;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: 160px 0 var(--section-padding);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    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, 7vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-social-proof {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.avatars {
    display: flex;
}

.avatars img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
    margin-left: -12px;
}

.avatars img:first-child {
    margin-left: 0;
}

/* Hero Visual - Chat Demo */
.hero-visual {
    margin-top: 64px;
    display: flex;
    justify-content: center;
}

.chat-demo {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 25px 100px rgba(0, 0, 0, 0.5);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

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

.chat-name {
    font-weight: 600;
}

.chat-status {
    font-size: 0.75rem;
    color: #22c55e;
}

.chat-messages {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 300px;
}

.message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    position: relative;
}

.message p {
    margin-bottom: 4px;
}

.message p:last-of-type {
    margin-bottom: 0;
}

.message .time {
    font-size: 0.6875rem;
    color: var(--text-muted);
    display: block;
    text-align: right;
    margin-top: 4px;
}

.message-user {
    background: var(--accent-primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message-lio {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

/* ============================================
   PROBLEM SECTION
   ============================================ */

.problem-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 64px;
}

.problem-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: all var(--transition-normal);
}

.problem-card:hover {
    border-color: var(--border-color-light);
    transform: translateY(-4px);
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.problem-card p {
    color: var(--text-secondary);
}

/* ============================================
   SOLUTION SECTION
   ============================================ */

.solution-section {
    padding: var(--section-padding) 0 60px;
}

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

/* ============================================
   FEATURES SECTION
   ============================================ */

.features-section {
    padding: 60px 0 var(--section-padding);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.1);
}

.feature-large {
    grid-column: span 2;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

.feature-demo {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.feature-demo code {
    color: var(--accent-secondary);
    font-size: 0.875rem;
}

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

.feature-result {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-large {
        grid-column: span 1;
    }
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */

.how-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 48px;
    margin-top: 64px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.step-number {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials-section {
    padding: var(--section-padding) 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 64px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.testimonial-text {
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.testimonial-author strong {
    display: block;
}

.testimonial-author span {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   PRICING SECTION
   ============================================ */

.pricing-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.pricing-card {
    max-width: 440px;
    margin: 64px auto 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
}

.pricing-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-secondary);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.pricing-amount {
    margin-bottom: 8px;
}

.pricing-amount .currency {
    font-size: 1.25rem;
    color: var(--text-secondary);
    vertical-align: top;
}

.pricing-amount .price {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.pricing-amount .period {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.pricing-note {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 32px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features svg {
    color: #22c55e;
    flex-shrink: 0;
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
    padding: var(--section-padding) 0;
    text-align: center;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

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

.form-group {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.form-group input {
    flex: 1;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

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

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

@media (max-width: 500px) {
    .form-group {
        flex-direction: column;
    }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

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

@media (max-width: 600px) {
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.hero-badge,
.hero-title,
.hero-subtitle,
.hero-cta,
.hero-social-proof {
    animation: fadeInUp 0.6s ease forwards;
}

.hero-title { animation-delay: 0.1s; }
.hero-subtitle { animation-delay: 0.2s; }
.hero-cta { animation-delay: 0.3s; }
.hero-social-proof { animation-delay: 0.4s; }