:root {
    --primary: #0a66c2;
}

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

body {
    font-family: 'Inter', system_ui, sans-serif;
    line-height: 1.6;
    color: #222;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

/* Buttons */
.btn {
    padding: 12px 26px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #0855a3;
}

.btn-block {
    width: 100%;
    text-align: center;
    margin-top: 20px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.05rem;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e2937 100%);
    color: white;
    padding: 140px 0 120px;
    text-align: center;
}

.hero h1 {
    font-size: 3.4rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-family: 'Space Grotesk', sans-serif;
}

.lead {
    font-size: 1.3rem;
    max-width: 560px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

/* Sections */
.section {
    padding: 90px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.6rem;
    margin-bottom: 12px;
}

.bg-light {
    background: #f8fafc;
}

/* Branch Cards */
.branches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.branch-card {
    background: white;
    border-radius: 16px;
    padding: 48px 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.branch-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.branch-icon {
    font-size: 3rem;
    margin-bottom: 24px;
}

.branch-card h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.branch-features {
    margin: 24px 0;
    padding-left: 20px;
}

.branch-features li {
    margin-bottom: 10px;
}

/* Plasma Solutions Section */
.plasma-intro {
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: center;
    font-size: 1.15rem;
}

.plasma-categories h3,
.plasma-applications h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.6rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.category-card {
    background: white;
    padding: 28px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
}

.category-card h4 {
    margin-bottom: 12px;
    color: #0f172a;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.app-item {
    background: #f1f5f9;
    padding: 16px 20px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

/* About Content */
.about-content {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.15rem;
}

/* Contact Section */
.contact-section {
    background: #f8fafc;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    padding: 40px 35px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.contact-card h3 {
    margin-bottom: 24px;
    font-size: 1.5rem;
    color: #0f172a;
}

.contact-item {
    margin-bottom: 20px;
    line-height: 1.7;
}

.contact-item a {
    color: #0a66c2;
    text-decoration: none;
}

.whatsapp-btn {
    display: inline-block;
    margin-top: 8px;
    background: #25D366;
    color: white !important;
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 0.95rem;
    text-decoration: none;
}

.contact-note {
    text-align: center;
    margin-top: 40px;
    font-size: 1.05rem;
}

/* Footer */
.footer {
    background: #0f172a;
    color: #94a3b8;
    text-align: center;
    padding: 40px 0;
    font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.6rem;
    }
    
    .branches-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .applications-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
}