/* 
   Food-Logic Engineering - Design System
   Style: Cleanroom Aesthetics, Molecular Grid, Industrial Precision
*/

:root {
    /* Core Colors */
    --color-stainless: #B0BEC5;    /* Industrial Stainless Steel */
    --color-orange: #FF9800;       /* Vitality/Nutrition Orange */
    --color-blue: #81D4FA;         /* Cold Chain Blue */
    --color-green: #4CAF50;        /* Bio-Safety Green */
    --color-dark: #263238;         /* Deep Charcoal for Text */
    --color-light: #F5F7F8;        /* Lab White/Grey Background */
    --color-border: #CFD8DC;       /* Precision Border */
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-light);
    color: var(--color-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.font-mono {
    font-family: var(--font-mono);
}

/* Navbar Styling */
.navbar {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    color: var(--color-dark) !important;
    letter-spacing: 1px;
}

.navbar-brand span {
    color: var(--color-orange);
}

.nav-link {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-dark) !important;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-orange) !important;
}

/* Hero Section */
.hero-section {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #eceff1 0%, #cfd8dc 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(var(--color-stainless) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
}

/* Buttons */
.btn-precision {
    background-color: var(--color-orange);
    color: white;
    border-radius: 0;
    padding: 12px 30px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    transition: all 0.3s ease;
}

.btn-precision:hover {
    background-color: #e68900;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 152, 0, 0.3);
    color: white;
}

.btn-outline-precision {
    border: 2px solid var(--color-dark);
    color: var(--color-dark);
    border-radius: 0;
    padding: 10px 28px;
    font-weight: 700;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.btn-outline-precision:hover {
    background-color: var(--color-dark);
    color: white;
}

/* Cards */
.lab-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 0;
    padding: 2rem;
    height: 100%;
    transition: all 0.3s ease;
}

.lab-card:hover {
    border-color: var(--color-orange);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* Footer */
footer {
    background-color: var(--color-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.footer-link {
    color: #b0bec5;
    text-decoration: none;
    transition: color 0.3s ease;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-link:hover {
    color: var(--color-orange);
}

/* Utility Classes */
.text-orange { color: var(--color-orange); }
.bg-stainless { background-color: var(--color-stainless); }
.border-precision { border: 1px solid var(--color-border); }

/* Animations */
@keyframes pulse-orange {
    0% { box-shadow: 0 0 0 0 rgba(255, 152, 0, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(255, 152, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 152, 0, 0); }
}

.pulse-indicator {
    animation: pulse-orange 2s infinite;
    width: 12px;
    height: 12px;
    background-color: var(--color-orange);
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
}