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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --light-gray: #f3f4f6;
    --border-color: #e5e7eb;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

/* Header & Navigation */
header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo a {
    text-decoration: none;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

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

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.5rem;
    opacity: 0.9;
}

/* Sections */
section {
    padding: 4rem 0;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-color);
}

/* About Section */
.about {
    background: white;
}

.about p {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
}

/* Services Section */
.services {
    background: var(--light-gray);
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

.service-card p {
    color: #6b7280;
}

/* Products Section */
.products {
    background: white;
}

.product-card {
    max-width: 800px;
    margin: 3rem auto;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 8px;
    text-align: center;
}

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

.product-card p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: #6b7280;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: background 0.3s;
}

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

/* Contact Section (Home Page) */
.contact {
    background: var(--light-gray);
    text-align: center;
}

.contact h2 {
    text-align: center;
}

.contact > .container > p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* Contact Page */
.contact-page {
    padding: 4rem 0;
    min-height: calc(100vh - 200px);
}

.contact-page h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-color);
}

.contact-intro {
    max-width: 700px;
    margin: 0 auto 2rem auto;
    font-size: 1.1rem;
    text-align: center;
    color: #6b7280;
    line-height: 1.8;
}

.contact-info-box {
    max-width: 600px;
    margin: 0 auto 3rem auto;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.contact-info-box h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.contact-info-box address {
    font-style: normal;
    color: var(--text-color);
    line-height: 1.8;
    font-size: 1.05rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.captcha-group #captchaQuestion {
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.2rem;
    background: var(--light-gray);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    display: inline-block;
}

.captcha-group input[type="text"] {
    max-width: 150px;
}

.contact-form .btn {
    width: 100%;
    margin-top: 1rem;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.contact-form .btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
}

.form-status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
}

.form-status.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

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

    section h2 {
        font-size: 2rem;
    }

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

@media (max-width: 480px) {
    nav .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}