/* LBS Global Supply - Main Stylesheet */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Industrial Theme */
    --primary-color: #1e3a8a;      /* Deep Blue */
    --secondary-color: #f97316;     /* Orange Accent */
    --dark-color: #1f2937;          /* Dark Gray */
    --light-color: #f8fafc;         /* Light Gray */
    --white: #ffffff;
    --text-dark: #374151;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

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

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 120px;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-3xl);
    color: var(--dark-color);
}

.highlight {
    color: var(--secondary-color);
}

/* Navigation */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    align-items: center;
    height: 80px;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.logo {
    height: 45px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text h2 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin: 0;
    line-height: 1.2;
    font-weight: 600;
}

.logo-text p {
    font-size: var(--font-size-xs);
    color: var(--text-light);
    margin: 0;
    line-height: 1;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
    flex-shrink: 0;
    padding-left: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(30, 58, 138, 0.1);
}

.cta-button {
    background-color: var(--secondary-color);
    color: var(--white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
}

.cta-button:hover {
    background-color: #ea580c;
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    margin-left: auto;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.8) 0%, rgba(31, 41, 55, 0.6) 100%);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    width: 100%;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--white);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Strengths Section */
.strengths {
    padding: var(--spacing-2xl) 0;
    background-color: var(--light-color);
}

.strengths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.strength-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

.strength-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.strength-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-2xl);
}

.strength-item h3 {
    color: var(--dark-color);
    margin-bottom: var(--spacing-sm);
}

/* Introduction Section */
.introduction {
    padding: var(--spacing-2xl) 0;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.intro-text h2 {
    margin-bottom: var(--spacing-md);
}

.intro-description {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.intro-process {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.process-number {
    width: 30px;
    height: 30px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.process-step h4 {
    margin-bottom: 4px;
    color: var(--dark-color);
}

.process-step p {
    font-size: var(--font-size-sm);
    margin: 0;
}

.office-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* Featured Categories */
.featured-categories {
    padding: var(--spacing-2xl) 0;
    background-color: var(--light-color);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.category-card {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.category-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.category-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.category-card p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

.category-link {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.category-link:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

/* Industries Preview */
.industries-preview {
    padding: var(--spacing-2xl) 0;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.industry-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.industry-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.industry-item i {
    font-size: var(--font-size-3xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.industry-item h4 {
    color: var(--dark-color);
    margin-bottom: var(--spacing-xs);
}

.industry-item p {
    font-size: var(--font-size-sm);
    margin: 0;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 100%);
    color: var(--white);
    text-align: center;
}

.cta-content h2 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.cta-section .btn-primary:hover {
    background-color: transparent;
    color: var(--secondary-color);
}

.cta-section .btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

.cta-section .btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

/* Footer */
.footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.footer-logo-img {
    height: 50px;
    width: auto;
}

.footer-logo-text h3 {
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

.footer-logo-text p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-contact {
    margin-top: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.contact-item i {
    color: var(--secondary-color);
    margin-top: 4px;
    width: 20px;
}

.contact-item div {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    margin: 0;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--secondary-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .intro-process {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
        gap: var(--spacing-md);
        margin-left: 0;
        padding-left: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-logo {
        gap: var(--spacing-sm);
    }
    
    .logo {
        height: 40px;
    }
    
    .logo-text h2 {
        font-size: var(--font-size-base);
    }
    
    .logo-text p {
        font-size: 10px;
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero {
        height: 70vh;
        min-height: 500px;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .strengths-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    .process-step {
        flex-direction: column;
        text-align: center;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scroll to top styles */
.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.scroll-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.scroll-to-top.show {
    display: flex;
}

/* Form Styles (for future use) */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-control.error {
    border-color: #ef4444;
}

.form-error {
    color: #ef4444;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero,
    .cta-section,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
}