/* ========================================
   MRBizCorp Website - Main Stylesheet
   Modern, Professional, Responsive Design
   ======================================== */

/* ===== CSS VARIABLES ===== */
:root {
    /* Brand Colors */
    --primary-blue: #0066CC;
    --primary-green: #7CB342;
    --dark-blue: #003D7A;
    --light-blue: #E3F2FD;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --light-gray: #F5F5F5;
    --medium-gray: #9E9E9E;
    --dark-gray: #424242;
    --text-dark: #212121;
    
    /* Accent Colors */
    --accent-orange: #FF9800;
    --success-green: #4CAF50;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-primary: 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Segoe UI', 'Roboto', Arial, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

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

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-alt {
    background-color: var(--light-gray);
}

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

.text-primary {
    color: var(--primary-blue);
}

.text-muted {
    color: var(--medium-gray);
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-normal);
}

.header-top {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    padding: var(--spacing-xs) 0;
    text-align: right;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-contact {
    display: flex;
    gap: var(--spacing-md);
    color: var(--white);
    font-size: 0.9rem;
}

.header-contact a {
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.header-contact a:hover {
    color: var(--accent-orange);
}

.header-main {
    padding: var(--spacing-sm) 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 60px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
    background-color: var(--light-blue);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-tagline {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-orange);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: #F57C00;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* ===== TRUST BADGES ===== */
.trust-badges {
    background-color: var(--white);
    padding: var(--spacing-md) 0;
    border-top: 1px solid #E0E0E0;
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    align-items: center;
    text-align: center;
}

.badge-item {
    padding: var(--spacing-sm);
}

.badge-item strong {
    display: block;
    color: var(--primary-blue);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* ===== BUSINESS LINES ===== */
.business-lines {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.business-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.business-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.business-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.business-card h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.business-card ul {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

.business-card li {
    padding: 0.3rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.business-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

/* ===== SERVICES SECTION ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.service-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.service-card h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

/* ===== GALLERY SECTION ===== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    aspect-ratio: 4/3;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: var(--spacing-md);
    color: var(--white);
    transform: translateY(100%);
    transition: var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

/* ===== STATS SECTION ===== */
.stats-section {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-md);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-orange);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-blue) 100%);
    color: var(--white);
    text-align: center;
}

.cta-section h2 {
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

/* ===== CONTACT SECTION ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.contact-info {
    background-color: var(--light-blue);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-item h4 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-form {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #E0E0E0;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--light-blue);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-section h4 {
    color: var(--accent-orange);
    margin-bottom: var(--spacing-sm);
}

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

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

.footer-section a {
    color: var(--white);
    opacity: 0.8;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent-orange);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--spacing-sm);
    text-align: center;
    opacity: 0.7;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg) var(--spacing-md);
        box-shadow: var(--shadow-xl);
        transition: var(--transition-normal);
        align-items: flex-start;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .header-contact {
        flex-direction: column;
        gap: var(--spacing-xs);
        font-size: 0.8rem;
    }
    
    .logo {
        height: 50px;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background-color: var(--dark-blue);
    transform: translateY(-5px);
}

/* ===== LOADING STATES ===== */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* ===== ACCESSIBILITY ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}