* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1e5a7a;
    --primary-dark: #164a63;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
}

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

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

/* Header & Navigation */
header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 18px;
    color: var(--primary);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    transition: 0.3s;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
    padding: 80px 20px;
}

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

.hero h1 {
    font-size: 48px;
    line-height: 1.1;
    color: var(--primary);
    margin-bottom: 20px;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 32px;
}

.hero-visual svg {
    width: 100%;
    height: auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(245, 158, 11, 0.3);
}

/* Services Section */
.services {
    padding: 80px 20px;
    background: var(--bg);
}

.services h2 {
    text-align: center;
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 60px;
    font-weight: 700;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background: var(--bg-alt);
    padding: 40px 28px;
    border-radius: 12px;
    border: 2px solid var(--border);
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(30, 90, 122, 0.15);
    border-color: var(--primary);
}

.service-card.featured {
    background: linear-gradient(135deg, var(--primary) 0%, #2d7a9f 100%);
    color: white;
    border: none;
}

.service-card.featured h3 {
    color: white;
}

.service-card.featured p {
    color: rgba(255,255,255,0.9);
}

.service-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: center;
    border-radius: 8px;
    margin-bottom: 20px;
}

.service-icon {
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--primary);
    font-weight: 700;
}

.service-card p {
    color: var(--text-light);
    font-size: 16px;
}

/* Expertise Section */
.expertise {
    padding: 80px 20px;
    background: var(--bg-alt);
}

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

.expertise h2 {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 24px;
    font-weight: 700;
}

.expertise p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 32px;
}

.expertise-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.expertise-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 17px;
    color: var(--text);
}

.expertise-visual svg {
    width: 100%;
    height: auto;
}

/* Contact Section */
.contact {
    padding: 80px 20px;
    background: var(--bg);
}

.contact h2 {
    text-align: center;
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 16px;
    font-weight: 700;
}

.contact-intro {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-alt);
    padding: 40px;
    border-radius: 12px;
    border: 2px solid var(--border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text);
    font-size: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

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

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 500;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-message {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background: #d1fae5;
    color: #065f46;
    border: 2px solid #10b981;
    display: block;
}

.form-message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid #ef4444;
    display: block;
}

/* Footer */
footer {
    background: var(--primary);
    color: white;
    padding: 32px 20px;
    text-align: center;
}

footer p {
    font-size: 15px;
    opacity: 0.9;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        display: none;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        padding: 60px 20px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

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

    .expertise-content {
        grid-template-columns: 1fr;
    }

    .expertise-visual {
        order: -1;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 28px 20px;
    }

    .services h2,
    .contact h2 {
        font-size: 32px;
    }

    .expertise h2 {
        font-size: 28px;
    }
}