:root {
    --primary-color: #005f73;
    --secondary-color: #0a9396;
    --accent-color: #94d2bd;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --dark-bg: #264653;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

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

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

nav ul li {
    margin-left: 20px;
}

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

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

/* Hero Section */
#hero {
    background-color: var(--light-bg);
    padding: 80px 0;
    text-align: center;
}

.hero-logo {
    height: 120px;
    width: auto;
    margin-bottom: 20px;
}

#hero h1 {
    font-size: 3rem;
    color: var(--dark-bg);
    margin-bottom: 10px;
}

.tagline {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s;
}

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

/* Sections */
section {
    padding: 60px 0;
}

h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--dark-bg);
    margin-bottom: 40px;
}

/* About Section */
#about {
    background-color: var(--white);
}

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

.principal-profile h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.job-title {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 20px;
}

/* Services Section */
#services {
    background-color: var(--light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Contact Section */
#contact {
    background-color: var(--white);
    text-align: center;
}

.contact-info {
    margin-top: 30px;
    font-size: 1.1rem;
}

.contact-info p {
    margin: 10px 0;
}

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

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: var(--white);
    text-align: center;
    padding: 20px 0;
}

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

    nav ul {
        margin-top: 15px;
    }

    #hero h1 {
        font-size: 2.5rem;
    }
}