/* Landing Page - Design Moderno e Profissional */

/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Backgrounds */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-glass: rgba(30, 41, 59, 0.8);
    
    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    
    /* Borders & Shadows */
    --border: #334155;
    --border-light: #475569;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    
    /* Radius */
    --radius: 16px;
    --radius-sm: 12px;
    --radius-lg: 24px;
    
    /* Spacing */
    --container-padding: 1.5rem;
    --section-padding: 5rem 0;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

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

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

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: var(--bg-secondary);
    box-shadow: var(--shadow);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--container-padding);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 0.5rem;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 8rem 0 4rem;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(99, 102, 241, 0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(59, 130, 246, 0.3), transparent);
    background-size: 100px 100px;
    animation: particles 30s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    33% { transform: translateY(-30px) scale(1.05); }
    66% { transform: translateY(-20px) scale(0.95); }
}

@keyframes particles {
    0% { transform: translateX(0); }
    100% { transform: translateX(100px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
}

/* Dashboard Preview */
.hero-visual {
    position: relative;
}

.dashboard-preview {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.preview-dots {
    display: flex;
    gap: 0.5rem;
}

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

.preview-dots span:nth-child(1) { background: #ef4444; }
.preview-dots span:nth-child(2) { background: #f59e0b; }
.preview-dots span:nth-child(3) { background: #10b981; }

.preview-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.preview-content {
    display: flex;
    height: 300px;
}

.preview-sidebar {
    width: 80px;
    background: var(--bg-tertiary);
    padding: 1rem 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-item {
    height: 40px;
    background: var(--border);
    border-radius: var(--radius-sm);
}

.sidebar-item.active {
    background: var(--primary);
}

.preview-main {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.preview-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.preview-card {
    height: 80px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.preview-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
}

.preview-chart {
    flex: 1;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.preview-chart::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 60%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 4px 4px 0 0;
    opacity: 0.3;
}

/* Section Styles */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    backdrop-filter: blur(10px);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* Features Section */
.features {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.feature-list i {
    color: var(--success);
    font-size: 1rem;
}

/* Plans Section */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.plans-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.plan-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
}

.plan-card.popular {
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.plan-card.popular::after {
    content: '⭐ Mais Popular';
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 0.25rem 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    transform: rotate(45deg);
    text-transform: uppercase;
}

.plan-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.plan-card.popular:hover {
    transform: scale(1.05) translateY(-4px);
}

.plan-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--success);
    color: white;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.plan-badge.inactive {
    background: var(--danger);
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.plan-price .currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.plan-price .value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.plan-price.free .value {
    color: var(--success);
}

.plan-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.plan-features i {
    color: var(--success);
    font-size: 1rem;
}

.plan-action {
    width: 100%;
}

/* About Section */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    text-align: left;
}

.about-text .section-header {
    text-align: left;
    margin-bottom: 2rem;
}

.about-features {
    margin: 2rem 0;
}

.about-feature {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.about-feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.about-feature-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

.about-actions {
    display: flex;
    gap: 1rem;
}

.about-visual {
    position: relative;
}

.about-image {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-placeholder {
    font-size: 4rem;
    color: var(--text-tertiary);
    opacity: 0.3;
}

/* Contact Section */
.contact-content {
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info-centered {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.contact-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-cta {
    grid-column: 1 / -1;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    margin-top: 2rem;
}

.contact-cta h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-cta p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-brand .brand-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
}

.footer-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-info-centered {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --section-padding: 3rem 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border);
        flex-direction: column;
        justify-content: flex-start;
        padding: 5rem 2rem 2rem;
        transition: right 0.3s;
        z-index: 999;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1rem;
        margin-bottom: 2rem;
    }
    
    .nav-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .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(7px, -6px);
    }
    
    .hero {
        padding: 6rem 0 3rem;
        min-height: auto;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .plans-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .plan-card.popular {
        transform: none;
    }
    
    .about-actions {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .feature-card,
    .plan-card,
    .contact-form {
        padding: 1.5rem;
    }
    
    .dashboard-preview {
        transform: none;
    }
    
    .preview-content {
        height: 250px;
    }
    
    .preview-cards {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .preview-card {
        height: 60px;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling for anchor links */
html {
    scroll-padding-top: 80px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success/Error messages */
.message {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin: 1rem 0;
    font-weight: 500;
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
/* 
Additional Mobile Optimizations */
@media (max-width: 375px) {
    .hero-title {
        font-size: 1.75rem;
        line-height: 1.2;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.8rem;
    }
    
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .feature-card,
    .plan-card {
        padding: 1.25rem;
    }
    
    .feature-icon,
    .about-feature-icon,
    .contact-icon {
        width: 45px;
        height: 45px;
        font-size: 1.125rem;
    }
    
    .plan-price .value {
        font-size: 2.5rem;
    }
    
    .nav-brand {
        font-size: 1.25rem;
    }
    
    .brand-icon {
        width: 35px;
        height: 35px;
        font-size: 1.125rem;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .dashboard-preview {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Dark mode support (if system preference) */
@media (prefers-color-scheme: dark) {
    /* Already using dark theme, but can add overrides if needed */
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-bg,
    .hero-particles {
        animation: none !important;
    }
    
    .btn::before {
        display: none;
    }
}

/* Print styles */
@media print {
    .header,
    .nav-toggle,
    .hero-particles,
    .footer-social,
    .btn {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .hero,
    .features,
    .plans,
    .about,
    .contact {
        page-break-inside: avoid;
        padding: 1rem 0;
    }
}

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border: #ffffff;
        --text-secondary: #ffffff;
        --bg-secondary: #000000;
    }
    
    .btn-outline {
        border-width: 3px;
    }
}

/* Loading skeleton animations */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* Improved button hover states */
.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline:active {
    transform: translateY(1px);
}

/* Enhanced card hover effects */
.feature-card:hover .feature-icon,
.plan-card:hover .plan-badge {
    transform: scale(1.05);
}

/* Smooth transitions for all interactive elements */
.nav-link,
.btn,
.feature-card,
.plan-card,
.contact-item,
.footer-social a {
    transition: var(--transition);
}

/* Improved form validation styles */
input:invalid,
textarea:invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

input:valid,
textarea:valid {
    border-color: var(--success);
}

/* Enhanced loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled:hover {
    transform: none !important;
    box-shadow: var(--shadow) !important;
}

/* Improved mobile menu */
@media (max-width: 768px) {
    .nav-menu::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s;
        z-index: 998;
    }
    
    .nav-menu.active::before {
        opacity: 1;
        pointer-events: all;
    }
    
    body.menu-open {
        overflow: hidden;
    }
}

/* Enhanced scroll indicators */
.section-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--bg-secondary);
    z-index: 9999;
}

.section-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    width: 0%;
    transition: width 0.3s ease;
}

/* Improved accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Enhanced error states */
.error-state {
    text-align: center;
    padding: 2rem;
    color: var(--danger);
}

.error-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Improved success states */
.success-state {
    text-align: center;
    padding: 2rem;
    color: var(--success);
}

.success-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Enhanced tooltips */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(1px);
    border: 5px solid transparent;
    border-top-color: var(--border);
    z-index: 1000;
}