/* ===================================
   REFFINET DOCS - LANDING PAGE
   Modern, animated, beautiful
   =================================== */

:root {
    --primary: #7c3aed;
    --primary-hover: #6d28d9;
    --primary-light: #a78bfa;
    --primary-glow: rgba(124, 58, 237, 0.4);
    --secondary: #3b82f6;
    --success: #22c55e;
    
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-elevated: #1a1a24;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: #2a2a35;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-normal);
}

.nav.scrolled {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

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

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn i {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-normal);
}

.btn:hover i {
    transform: translateX(4px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
}

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

.btn-ghost:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--primary);
}

.btn-white {
    background: white;
    color: var(--bg-dark);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: 14px;
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 150%;
    background: radial-gradient(ellipse at center, var(--primary-glow) 0%, transparent 60%);
    opacity: 0.3;
    animation: pulse 8s ease-in-out infinite;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(124, 58, 237, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 58, 237, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-container {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    animation: fadeInDown 0.6s ease 0.2s backwards;
}

.hero-badge i {
    width: 16px;
    height: 16px;
    color: var(--primary-light);
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, var(--secondary) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientMove 5s ease infinite;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeIn 1s ease 0.6s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--primary-light);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

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

/* Hero Preview */
.hero-preview {
    margin-top: 60px;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.preview-window {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.05),
        0 20px 50px -10px rgba(0, 0, 0, 0.5),
        0 0 100px var(--primary-glow);
    animation: float 6s ease-in-out infinite;
}

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

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
}

.preview-dots span:nth-child(1) { background: #ff5f57; }
.preview-dots span:nth-child(2) { background: #febc2e; }
.preview-dots span:nth-child(3) { background: #28c840; }

.preview-title {
    flex: 1;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

.preview-content {
    padding: 16px;
}

.preview-toolbar {
    display: flex;
    gap: 8px;
    padding: 8px;
    background: var(--bg-elevated);
    border-radius: 8px;
    margin-bottom: 16px;
}

.preview-btn {
    width: 24px;
    height: 24px;
    background: var(--border-color);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.preview-btn.active {
    background: var(--primary);
}

.preview-separator {
    width: 1px;
    background: var(--border-color);
    margin: 0 4px;
}

.preview-editor {
    padding: 20px;
    background: var(--bg-dark);
    border-radius: 8px;
    min-height: 150px;
}

.preview-line {
    height: 14px;
    background: var(--bg-elevated);
    border-radius: 4px;
    margin-bottom: 12px;
    animation: shimmer 2s infinite;
    background: linear-gradient(90deg, var(--bg-elevated) 0%, var(--border-color) 50%, var(--bg-elevated) 100%);
    background-size: 200% 100%;
}

.preview-line.title {
    height: 24px;
    width: 70%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    margin-bottom: 20px;
}

.preview-line.short {
    width: 40%;
}

.preview-cursor {
    display: inline-block;
    width: 2px;
    height: 18px;
    background: var(--primary);
    animation: blink 1s infinite;
}

/* Features Section */
.features {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.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: 16px;
    padding: 32px;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px -10px var(--primary-glow);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 58, 237, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
}

.feature-icon i {
    width: 28px;
    height: 28px;
    color: var(--primary-light);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

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

/* How it works */
.how-it-works {
    padding: 120px 0;
    background: var(--bg-card);
}

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-normal);
}

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

.step:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 58, 237, 0.1);
    border-radius: 16px;
    margin: 0 auto 20px;
}

.step-icon i {
    width: 32px;
    height: 32px;
    color: var(--primary-light);
}

.step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step p {
    font-size: 14px;
    color: var(--text-secondary);
}

.step-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0.3;
}

/* Showcase */
.showcase {
    padding: 120px 0;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.showcase-content h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.feature-list {
    list-style: none;
    margin-bottom: 32px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
}

.feature-list li i {
    width: 20px;
    height: 20px;
    color: var(--success);
}

.showcase-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.showcase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-normal);
}

.showcase-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.showcase-card:nth-child(2) { transition-delay: 0.1s; }
.showcase-card:nth-child(3) { transition-delay: 0.2s; }
.showcase-card:nth-child(4) { transition-delay: 0.3s; }

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

.showcase-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 58, 237, 0.1);
    border-radius: 12px;
    margin-bottom: 16px;
}

.showcase-icon i {
    width: 24px;
    height: 24px;
    color: var(--primary-light);
}

.showcase-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.showcase-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Pricing */
.pricing {
    padding: 120px 0;
    background: var(--bg-card);
}

.pricing-card {
    max-width: 400px;
    margin: 0 auto;
    background: var(--bg-elevated);
    border: 2px solid var(--primary);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    box-shadow: 0 20px 60px -10px var(--primary-glow);
}

.pricing-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-card h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 16px;
}

.pricing-price {
    margin-bottom: 32px;
}

.pricing-price .price {
    font-size: 56px;
    font-weight: 800;
    color: var(--primary-light);
}

.pricing-price .period {
    font-size: 16px;
    color: var(--text-muted);
}

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

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

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

.pricing-features li i {
    width: 18px;
    height: 18px;
    color: var(--success);
}

/* CTA */
.cta {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='m36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

.cta h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-dark);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo i {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    padding: 8px 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .showcase-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 36px;
        letter-spacing: -1px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-connector {
        width: 2px;
        height: 40px;
    }
    
    .showcase-visual {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        gap: 40px;
    }
}