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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 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;
}

/* Navigation */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-brand a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.nav-brand a:hover {
    color: var(--secondary-color);
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0;
    text-align: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    line-height: 1.6;
}

/* Key Features */
.key-features {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    opacity: 0.3;
    margin-bottom: 1rem;
}

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

.feature-card > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

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

.feature-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.feature-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* Services Section */
.services {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.service-main {
    margin-bottom: 4rem;
    padding: 2rem;
    background-color: var(--bg-light);
    border-radius: 10px;
}

.service-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-tagline {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.service-content p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.service-list {
    list-style: none;
    margin-top: 1.5rem;
}

.service-list li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.service-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.service-additional {
    margin: 4rem 0;
    padding: 2rem;
    background-color: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 10px;
}

.service-additional h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.philosophy {
    margin-top: 4rem;
    padding: 3rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 10px;
    text-align: center;
}

.philosophy h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.philosophy p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Portfolio Section */
.portfolio {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    font-size: 1.2rem;
}

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

.portfolio-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.portfolio-item h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

/* Clients Section */
.clients {
    padding: 80px 0;
}

.client-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.client-content h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.client-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info h3,
.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.contact-details p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

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

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

.legal {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 2rem;
    font-style: italic;
}

.contact-form {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: 400;
}

.btn-submit {
    background-color: var(--secondary-color);
    color: white;
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.btn-submit:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin-bottom: 0.5rem;
}

.footer a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 0;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .feature-card,
    .service-main,
    .portfolio-item {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}