/* ==========================================================================
   Global Variables & Reset
   ========================================================================== */
   :root {
    /* Colors */
    --bg-dark: #ffffff;
    --bg-panel: #f8fafc;
    --text-main: #1e1b4b; /* Deep blue/purple for headings */
    --text-body: #475569; /* Slate grey for body */
    --text-muted: #64748b;
    --cyan: #1e3a8a;
    --cyan-glow: rgba(30, 58, 138, 0.2);
    --emerald: #1e3a8a;
    --gradient-primary: linear-gradient(135deg, var(--cyan), var(--emerald));
    
    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Roboto', sans-serif;
    
    /* Spacing & Sizes */
    --container-max: 1400px;
    --section-pad: clamp(2rem, 5vw, 4rem);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: 1px solid rgba(0, 0, 0, 0.05);
    --glass-blur: blur(12px);
    
    /* Transitions */
    --trans-fast: 0.2s ease;
    --trans-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scrollbar-width: thin;
    scrollbar-color: rgba(30, 58, 138, 0.5) var(--bg-dark);
}

/* ==========================================================================
   Custom Scrollbar
   ========================================================================== */
::-webkit-scrollbar {
    width: 6px; /* Thinner scrollbar */
}

::-webkit-scrollbar-track {
    background: var(--bg-panel);
}

::-webkit-scrollbar-thumb {
    background: rgba(30, 58, 138, 0.4);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--cyan);
}

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

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-main);
}

h1 { font-size: clamp(2.5rem, 5vw, 5rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); font-weight: 600; }
h3 { font-size: clamp(1.5rem, 2vw, 2rem); font-weight: 600; }
h4 { font-size: clamp(1.2rem, 1.5vw, 1.5rem); font-weight: 600; }

p {
    font-size: clamp(1rem, 1.1vw, 1.125rem);
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.container {
    width: 90%;
    max-width: var(--container-max);
    margin: 0 auto;
}

/* ==========================================================================
   Components
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    transition: var(--trans-smooth);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px var(--cyan-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--cyan-glow);
}

.btn-outline {
    background: transparent;
    color: var(--cyan);
    border: 1px solid var(--cyan);
}

.btn-outline:hover {
    background: var(--cyan-glow);
    border-color: transparent;
}

.btn-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

.tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(30, 58, 138, 0.1);
    color: var(--cyan);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--trans-smooth);
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    max-width: var(--container-max);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 40px; /* Adjust as needed */
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--trans-fast);
    font-size: 1rem;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.nav-links .nav-cta {
    background: var(--glass-bg);
    border: var(--glass-border);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
}

.nav-links .nav-cta:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.hamburger, .hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--text-main);
    transition: var(--trans-fast);
}

.hamburger { top: 50%; transform: translateY(-50%); }
.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/hero_bg.jpg') center/cover no-repeat;
    opacity: 0.1;
    z-index: -1;
}

/* Gradient overlay to blend image nicely */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.7) 0%, var(--bg-dark) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 900px;
    text-align: center;
}

.hero p {
    font-size: clamp(1.1rem, 1.5vw, 1.5rem);
    margin: 2rem auto;
    max-width: 800px;
}

.hero-actions {
    margin-top: 2.5rem;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
    padding: var(--section-pad) 0;
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    margin-bottom: 0;
}

.about-desc p {
    font-size: clamp(1.1rem, 1.2vw, 1.25rem);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services {
    padding: var(--section-pad) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--glass-bg);
    border: var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 3rem 2rem;
    border-radius: 24px;
    transition: var(--trans-smooth);
}

.service-card:hover {
    transform: translateY(-10px);
    background: #ffffff;
    border-color: rgba(30, 58, 138, 0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: var(--gradient-primary);
    margin-bottom: 2rem;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon::after {
    content: '';
    position: absolute;
    inset: 2px;
    background: #ffffff;
    border-radius: 14px;
    z-index: 1;
}

.service-icon i {
    z-index: 2;
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}


/* ==========================================================================
   Traceability Section
   ========================================================================== */
.traceability {
    padding: var(--section-pad) 0;
    background: radial-gradient(circle at 50% 50%, rgba(30, 58, 138, 0.05) 0%, transparent 70%);
}

.traceability-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.traceability-content {
    max-width: 1000px;
    margin: 0 auto;
}

.glass-panel {
    background: var(--bg-panel);
    border: var(--glass-border);
    backdrop-filter: var(--glass-blur);
    padding: clamp(2rem, 5vw, 4rem);
    border-radius: 30px;
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: var(--gradient-primary);
}

.mt-4 { margin-top: 2rem; }

/* ==========================================================================
   Why Us Section
   ========================================================================== */
.why-us {
    padding: var(--section-pad) 0;
}

.why-us-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.why-card {
    padding: 2rem;
    border-left: 2px solid rgba(0,0,0,0.1);
    transition: var(--trans-fast);
}

.why-card:hover {
    border-left-color: var(--emerald);
    background: linear-gradient(90deg, rgba(30, 58, 138, 0.05) 0%, transparent 100%);
}

.why-card h4 {
    color: var(--text-main);
    margin-bottom: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    padding: 5rem 0 2rem;
    background: #f8fafc;
    border-top: var(--glass-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
    margin-bottom: 1rem;
}

.footer-brand span {
    color: var(--cyan);
}

.footer-links, .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a, .email-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--trans-fast);
}

.footer-links a:hover, .email-link:hover {
    color: var(--cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================================================
   Cookie Banner
   ========================================================================== */
.cookie-banner {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: var(--glass-blur);
    border-top: var(--glass-border);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.05);
    padding: 1.5rem;
    z-index: 2000;
    transition: bottom 0.5s ease;
}

.cookie-banner.show {
    bottom: 0;
}

.cookie-content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cookie-content p {
    margin: 0;
    font-size: 0.9rem;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.animate-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; transition-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; transition-delay: 0.6s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Responsive Queries
   ========================================================================== */
/* Extremely wide monitors */
@media screen and (min-width: 1920px) {
    html { font-size: 18px; }
}

@media screen and (min-width: 2560px) {
    html { font-size: 22px; }
    .hero { min-height: 80vh; }
}

/* Tablets & Small Laptops */
@media screen and (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobiles & iPads */
@media screen and (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px; /* Thinner sidebar */
        max-width: 85vw;
        height: 100vh;
        background: rgba(255, 255, 255, 0.95); /* Solid frost effect */
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-left: 1px solid rgba(255, 255, 255, 0.8);
        box-shadow: -20px 0 60px rgba(0, 0, 0, 0.15); /* Elegant shadow */
        flex-direction: column;
        justify-content: center;
        align-items: center; /* Center options for a clean look */
        padding: 4rem 2rem;
        transition: var(--trans-smooth);
        z-index: 1000;
    }

    .nav-links a {
        font-family: var(--font-heading);
        font-size: 1.4rem;
        font-weight: 600;
        color: var(--text-main); /* Darker, premium text */
        margin-bottom: 2rem;
        width: 100%;
        text-align: center;
        position: relative;
        padding-bottom: 0.5rem;
    }

    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 3px;
        background: var(--gradient-primary);
        border-radius: 3px;
        transition: width var(--trans-fast);
    }

    .nav-links a:hover::after, .nav-links a.active::after {
        width: 30px;
    }

    .nav-links a:hover {
        color: var(--cyan);
    }

    .nav-links .nav-cta {
        margin-top: 1rem;
        width: 80%;
        background: var(--gradient-primary);
        color: #fff;
        border: none;
        box-shadow: 0 4px 15px var(--cyan-glow);
    }

    .nav-links .nav-cta:hover {
        box-shadow: 0 8px 25px var(--cyan-glow);
        transform: translateY(-2px);
    }
    
    .nav-links .nav-cta::after {
        display: none; /* remove the underline effect from button */
    }

    .nav-links.active {
        right: 0;
    }

    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-menu-btn.active .hamburger {
        background: transparent;
    }
    .mobile-menu-btn.active .hamburger::before {
        transform: rotate(45deg);
        top: 0;
    }
    .mobile-menu-btn.active .hamburger::after {
        transform: rotate(-45deg);
        top: 0;
    }

    .hero-content {
        margin-top: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }

    .menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: all var(--trans-smooth);
    }

    .menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

/* Small mobiles */
@media screen and (max-width: 480px) {
    html { font-size: 14px; }
    .hero p { margin: 1rem auto; }
}