:root {
    --bg-light: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --navy-primary: #1B365D;
    --navy-dark: #0F2744;
    --blue-electric: #0088FF;
    --steel-gray: #64748B;
    --steel-light: #E2E8F0;
    --text-main: #0F172A;
    --text-muted: #475569;
    --border-color: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 25px -5px rgba(27, 54, 93, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
}

/* Header & Nav */
.top-bar {
    background-color: var(--navy-primary);
    color: #FFFFFF;
    font-size: 0.85rem;
    padding: 0.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--navy-primary);
}

.logo span {
    color: var(--blue-electric);
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--blue-electric);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--navy-primary), var(--blue-electric));
    color: #FFFFFF;
    padding: 0.7rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 136, 255, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--navy-primary);
    border: 2px solid var(--navy-primary);
    padding: 0.65rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    transition: background 0.2s, color 0.2s;
}

.btn-secondary:hover {
    background-color: var(--navy-primary);
    color: #FFFFFF;
}

/* Hero */
.hero {
    padding: 6rem 5% 5rem;
    background: linear-gradient(180deg, #F0F6FF 0%, var(--bg-light) 100%);
    text-align: center;
}

.badge {
    background-color: #E0F2FE;
    color: var(--blue-electric);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 1.5rem;
    border: 1px solid #BAE6FD;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--navy-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero h1 span {
    color: var(--blue-electric);
}

.hero p.tagline {
    font-size: 1.2rem;
    color: var(--steel-gray);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero p.subtext {
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Sections & Grids */
section {
    padding: 5rem 5%;
}

.bg-alt {
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3.5rem;
}

.section-header h2 {
    font-size: 2.2rem;
    color: var(--navy-primary);
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--steel-gray);
    font-size: 1.05rem;
}

/* Product Catalog Styles */
.catalog-filter {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.2rem;
    border: 1px solid var(--border-color);
    background: #FFFFFF;
    color: var(--text-muted);
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--navy-primary);
    color: #FFFFFF;
    border-color: var(--navy-primary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--blue-electric);
}

.product-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--blue-electric);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.product-title {
    color: var(--navy-primary);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.product-sku {
    font-size: 0.85rem;
    color: var(--steel-gray);
    font-family: monospace;
    margin-bottom: 1rem;
}

.product-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Contact Box */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1100px;
    margin: 0 auto;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: var(--shadow-md);
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input, select, textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--blue-electric);
}

/* Footer */
footer {
    background-color: var(--navy-primary);
    color: #FFFFFF;
    padding: 3rem 5% 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #2A4365;
    padding-bottom: 2rem;
    margin-bottom: 1.5rem;
}

.footer-bottom {
    text-align: center;
    color: #94A3B8;
    font-size: 0.85rem;
}