/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    /* Color Palette - HSL */
    --hue-primary: 220;
    /* Deep Blue (Trust) */
    --hue-secondary: 45;
    /* Gold/Yellow (Logistics/Machinery) */

    --color-primary: hsl(var(--hue-primary), 90%, 20%);
    --color-primary-light: hsl(var(--hue-primary), 80%, 30%);
    --color-accent: hsl(var(--hue-secondary), 100%, 50%);
    --color-accent-hover: hsl(var(--hue-secondary), 100%, 40%);

    --color-dark: hsl(220, 30%, 10%);
    --color-dark-surface: hsl(220, 25%, 14%);
    --color-light: hsl(0, 0%, 98%);
    --color-text-main: hsl(220, 20%, 98%);
    --color-text-muted: hsl(220, 15%, 85%);

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, rgba(5, 20, 50, 0.9), rgba(10, 30, 70, 0.7));
    --gradient-glass: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(255, 200, 0, 0.3);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--color-dark);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-light);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-lg) 0;
}

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

.text-center {
    text-align: center;
}

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.flex {
    display: flex;
    gap: var(--spacing-sm);
}

.flex-center {
    justify-content: center;
    align-items: center;
}

.flex-col {
    flex-direction: column;
}

.hidden {
    display: none;
}

/* UI Elements - Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8em 2em;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-dark);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 200, 0, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-text-main);
    color: var(--color-text-main);
}

.btn-outline:hover {
    background: var(--color-light);
    color: var(--color-dark);
    transform: translateY(-2px);
}

/* Glassmorphism Card */
.glass-card {
    background: var(--gradient-glass);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-small);
    transition: var(--transition-base);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
    background: rgba(10, 15, 30, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    font-weight: 500;
    position: relative;
    color: var(--color-text-main);
    opacity: 0.8;
}

.nav-links a:hover,
.nav-links a.active {
    opacity: 1;
    color: var(--color-accent);
}

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

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

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-light);
}

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.7);
    animation: zoomIn 20s infinite alternate;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.hero h1 {
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-light);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

/* Footer */
footer {
    background: var(--color-dark-surface);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
    color: var(--color-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

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

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.social-icons a:hover {
    background: var(--color-accent);
    color: var(--color-dark);
}

.copyright {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: var(--spacing-md);
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Animations */
@keyframes zoomIn {
    from {
        transform: scale(1);
    }

    to {
        transform: scale(1.1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
    font-weight: 500;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--color-light);
    font-family: inherit;
    transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.08);
}

/* Media Queries */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Mobile menu implementation needed via JS */
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--color-dark-surface);
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    h1 {
        font-size: 2.5rem;
    }
}