/* Color Theme */
:root {
    --primary: #088888;
    --primary-dark-1: #066D6D;
    --primary-dark-2: #055252;
    --primary-dark-3: #033636;
    --primary-dark-4: #021B1B;
    --light: #f8f9fa;
    --white: #ffffff;
    --text-dark: #333333;
    --text-light: #666666;
    --border: #eeeeee;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary-dark-4);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    margin-top: 2rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-dark-1);
}

/* Header */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(8, 136, 136, 0.05);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark-4);
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-dark-4);
}

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

.nav a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

.nav a:hover::after,
.nav a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark-1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(8, 136, 136, 0.3);
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-dark-4) 0%, var(--primary-dark-3) 100%);
    color: var(--white);
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="1200" height="600" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero .sub-headline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero .cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 2rem 0;
}

.section.light {
    background-color: var(--light);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 2rem;
}

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

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(8, 136, 136, 0.15);
}

.card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark-1) 100%);
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.card-header h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.card-header .icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    opacity: 0.9;
}

.card-body {
    padding: 2rem;
}

.card-body p {
    margin-bottom: 1rem;
}

.card-body ul {
    list-style: none;
    margin: 1rem 0;
}

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

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

/* Product Cards */
.product-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(8, 136, 136, 0.2);
}

.product-image {
    width: 100%;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-info {
    padding: 2rem;
}

.product-info h3 {
    color: var(--primary-dark-4);
    margin-bottom: 0.5rem;
}

.product-info p {
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.product-specs {
    background: var(--light);
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.product-specs p {
    margin-bottom: 0.5rem;
}

/* Featured Product */
.featured-product {
    background: linear-gradient(135deg, var(--primary-dark-4) 0%, var(--primary-dark-3) 100%);
    color: var(--white);
    padding: 4rem 2rem;
    border-radius: 8px;
    margin: 3rem 0;
}

.featured-product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.featured-product-text h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.featured-product-text p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
}

.featured-product-image {
    text-align: center;
}

.featured-product-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(8, 136, 136, 0.1);
}

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

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* Contact Section */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-form {
    background: var(--light);
    padding: 2rem;
    border-radius: 8px;
}

.contact-info {
    padding: 2rem 0;
}

.contact-info-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.contact-info-item:last-child {
    border-bottom: none;
}

.contact-info-item h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* Section Heading */
.section-heading {
    text-align: center;
    margin-bottom: 3rem;
}

.section-heading h2 {
    color: var(--primary-dark-4);
    margin-bottom: 0.5rem;
}

.section-heading p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: var(--primary-dark-4);
    color: var(--white);
    padding: 4rem 2rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-light {
    color: var(--text-light);
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* Success Message */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .header-container {
        padding: 1rem;
    }

    .nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav.active {
        max-height: 300px;
    }

    .nav ul {
        flex-direction: column;
        gap: 0;
        padding: 1rem 2rem;
    }

    .nav a {
        padding: 0.75rem 0;
        display: block;
    }

    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero .sub-headline {
        font-size: 1rem;
    }

    .hero .cta-buttons {
        flex-direction: column;
    }

    .hero .btn-primary, .hero .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .section {
        padding: 2rem 0;
    }

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

    .featured-product-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: repeat(auto-fit, minmax(100%, 1fr));
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-container {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .grid-4 {
        grid-template-columns: 1fr;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}