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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo a:hover {
    color: var(--primary-dark);
}

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

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-color);
}

nav ul li a.client-area-btn {
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.3s ease;
}

nav ul li a.client-area-btn:hover {
    background-color: var(--primary-dark);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero .lead {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 0.875rem 2rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero .cta-button {
    background-color: white;
    color: var(--primary-color);
}

.hero .cta-button:hover {
    background-color: var(--bg-light);
    color: var(--primary-dark);
}

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    perspective: 1200px;
    min-height: 260px;
    outline: none;
}

.feature-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
}

.feature-card-front,
.feature-card-back {
    position: absolute;
    inset: 0;
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    background-color: var(--bg-white);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
}

.feature-card-back {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    transform: rotateY(180deg);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover .feature-card-inner,
.feature-card:focus-within .feature-card-inner {
    transform: rotateY(180deg);
}

.feature-card:focus {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.35);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-align: center;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    text-align: center;
}

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

.feature-card-back p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1rem;
    line-height: 1.8;
}

@media (prefers-reduced-motion: reduce) {
    .feature-card-inner {
        transition: none;
    }

    .feature-card:hover .feature-card-inner,
    .feature-card:focus-within .feature-card-inner {
        transform: none;
    }

    .feature-card-front,
    .feature-card-back {
        position: relative;
        transform: none !important;
    }
}

/* CTA Section */
.cta-section {
    padding: 5rem 0;
    text-align: center;
    background-color: var(--bg-white);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.cta-section p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-header .lead {
    font-size: 1.125rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

/* Content Section */
.content-section {
    padding: 3rem 0;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.content-wrapper h2 {
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.content-wrapper h2:first-child {
    margin-top: 0;
}

.content-wrapper p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.content-wrapper ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.content-wrapper ul li {
    margin-bottom: 0.75rem;
    color: var(--text-light);
    line-height: 1.7;
}

.content-wrapper ul li strong {
    color: var(--text-color);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-info p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.contact-details {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.contact-details h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-details p {
    margin-bottom: 0.5rem;
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-note {
    background-color: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 1rem;
    border-radius: 0.25rem;
}

.contact-note p {
    margin: 0;
    color: #92400e;
    font-size: 0.9rem;
}

.contact-form {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.5rem;
}

.contact-form h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--text-color);
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

footer p {
    margin: 0;
}

footer nav ul {
    gap: 1.5rem;
}

footer nav ul li a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

footer nav ul li a:hover {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li a.client-area-btn {
        margin-top: 0.5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero .lead {
        font-size: 1.125rem;
    }

    .features h2,
    .cta-section h2 {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    footer .container {
        flex-direction: column;
        text-align: center;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .content-wrapper h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 640px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 3rem 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .features,
    .cta-section {
        padding: 3rem 0;
    }

    .content-section {
        padding: 2rem 0;
    }
}