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

:root {
    --deep-ocean: #0a3d52;
    --ocean-blue: #1a5f7a;
    --wave-teal: #007E82;
    --foam-light: #86c5d8;
    --foam-white: #e8f4f8;
    --text-dark: #0f2b35;
    --text-light: #ffffff;
}

:focus-visible {
    outline: none;
}

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

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(12,63,85,0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    width: 220px;
    height: 80px;
    background-image: url('images/SternaLogo.png');
    background-size: 100%;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: var(--text-light);
    text-decoration: none;
    font-family: "Montserrat", sans-serif;
    font-optical-sizing: auto;
    font-weight: 600;
    font-style: normal;
    font-size: 2.5rem;
    padding-left: 75px;
}

.logo-text {
    color: white;
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 2px;
    text-transform: uppercase;
    /* optional readability improvement */
    text-shadow: 0 2px 6px rgba(0,0,0,0.6);
}

.logo-full {
    margin-bottom: 100px;
}
    .logo-full img {
        width: 400px;
        position: absolute;
        margin-left: -256px;
        margin-top: -24px;
    }
    .logo-full h3 {
        font-family: "Montserrat", sans-serif;
        font-optical-sizing: auto;
        font-weight: 600;
        font-style: normal;
        font-size: 3.8rem;
        padding-left: 24px;
        letter-spacing: 1px;
        line-height: 42px;
        color: #273759;
    }
    .logo-full span {
        font-family: "Montserrat", sans-serif;
        font-optical-sizing: auto;
        font-size: 1.34rem;
        font-weight: 400;
        font-style: normal;
        padding-left: 24px;
        color: #2b6190;
    }

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

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

        .nav-links a:hover:not(.btn) {
            color: var(--foam-light);
        }

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background: var(--wave-teal);
    color: var(--text-light);
}

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 126, 130, 0.4);
        background: #006b6f;
    }

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--foam-light);
}

    .btn-secondary:hover {
        background: var(--foam-light);
        color: var(--deep-ocean);
    }

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem 4rem;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(10, 61, 82, 0.9), rgba(26, 95, 122, 0.8));
        z-index: 1;
    }

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
    color: var(--text-light);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

    .hero h1 span {
        background: linear-gradient(135deg, var(--foam-light), var(--foam-white));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

.hero p {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Section */
.features {
    padding: 6rem 2rem;
    background: var(--foam-white);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

    .section-header h2 {
        font-size: 2.5rem;
        color: var(--deep-ocean);
        margin-bottom: 1rem;
    }

    .section-header p {
        font-size: 1.1rem;
        color: var(--ocean-blue);
    }

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

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(10, 61, 82, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

    .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 30px rgba(10, 61, 82, 0.15);
    }

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--foam-light), var(--wave-teal));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

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

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

/* About Section */
.about {
    padding: 6rem 2rem;
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    color: var(--deep-ocean);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--ocean-blue);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

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

.stat-card {
    background: var(--foam-white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--wave-teal);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--ocean-blue);
    font-weight: 600;
}

/* Contact Section */
.contact {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--deep-ocean), var(--ocean-blue));
    color: var(--text-light);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact p {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    text-align: left;
}

    .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        font-weight: 600;
    }

    .form-group input,
    .form-group textarea {
        width: 100%;
        padding: 1rem;
        border: none;
        border-radius: 6px;
        font-size: 1rem;
        font-family: inherit;
    }

    .form-group textarea {
        resize: vertical;
        min-height: 150px;
    }

.btn-submit {
    background: var(--foam-light);
    color: var(--deep-ocean);
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

    .btn-submit:hover {
        background: var(--foam-white);
    }

/* Footer */
footer {
    background: var(--deep-ocean);
    color: var(--text-light);
    padding: 3rem 2rem;
    text-align: center;
}

    footer p {
        opacity: 0.8;
    }

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

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

    .hero p {
        font-size: 1.1rem;
    }

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

    .section-header h2,
    .about-text h2,
    .contact h2 {
        font-size: 2rem;
    }
}