/* Modern CSS Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Variables */
:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --black: #000000;
    
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
}

/* Base Styles */
body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-desktop {
    display: flex;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
    list-style: none;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.cta-btn {
    background: var(--primary-color);
    color: var(--white) !important;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--border-radius);
    font-weight: 600;
}

.cta-btn:hover {
    background: var(--primary-dark);
    color: var(--white) !important;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

/* Hero Section */
.hero {
    padding: var(--spacing-24) 0 var(--spacing-16);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    margin-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-8);
    align-items: center;
}

.hero-demo {
    position: relative;
    width: 90%;
    margin-left: auto;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-10);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-8);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-1);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.hero-demo {
    position: relative;
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

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

/* Features Section */
.features {
    padding: var(--spacing-20) 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
    color: var(--white);
}

.feature-icon i {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

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

/* Testimonials */
.testimonials {
    padding: var(--spacing-20) 0;
    background: var(--light-color);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stars {
    color: #ffc107;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
}

.testimonial-content p {
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.author-title {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Contact Section */
.contact {
    padding: var(--spacing-20) 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.contact-info h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
}

.contact-info p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
}

.contact-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.benefit {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--text-primary);
    font-weight: 500;
}

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

/* Forms */
.contact-form-wrapper {
    background: var(--light-color);
    padding: var(--spacing-8);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color 0.2s ease;
    background: var(--white);
}

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

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

/* Form Messages */
.form-message {
    margin-bottom: var(--spacing-5);
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--border-radius);
    border: 1px solid;
    animation: slideInDown 0.3s ease-out;
}

.form-message-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.form-message-error {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.form-message-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.form-message-icon {
    font-size: var(--font-size-lg);
    font-weight: bold;
}

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

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-16);
    margin-bottom: var(--spacing-8);
}

.footer-brand p {
    color: #adb5bd;
    margin-top: var(--spacing-4);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--spacing-4);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-lg);
}

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

.footer-column li {
    margin-bottom: var(--spacing-2);
}

.footer-column a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    padding-top: var(--spacing-8);
    border-top: 1px solid #495057;
    text-align: center;
    color: #adb5bd;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.footer-legal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
}

.footer-legal a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-legal a:hover {
    color: var(--white);
}

.footer-legal .separator {
    color: #6c757d;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-desktop {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .container {
        padding: 0 var(--spacing-4);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-16) 0 var(--spacing-12);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Focus styles for accessibility */
button:focus,
input:focus,
textarea:focus,
select:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}