/* Gradient font for Talk to Us button */
.btn-gradient {
    background: none;
    border: none;
    color: transparent;
    background-image: linear-gradient(90deg, #fff 0%, #888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    font-weight: 700;
    box-shadow: none;
    transition: background-image 0.3s;
}

.btn-gradient:hover, .btn-gradient:focus {
    background-image: linear-gradient(90deg, #fff 0%, #000 100%);
    text-decoration: underline;
}
/* ===========================
   Global Styles & Reset
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #000000;
    --primary-dark: #222222;
    --primary-light: #444444;
    --secondary-color: #ffffff;
    --accent-color: #cccccc;
    --dark-bg: #000000;
    --dark-bg-light: #222222;
    --light-bg: #ffffff;
    --white: #ffffff;
    --text-dark: #000000;
    --text-light: #222222;
    --text-lighter: #444444;
    --border-color: #cccccc;
    /* Typography */
    --font-family: 'Montserrat', 'Arial', 'Helvetica Neue', Helvetica, sans-serif;
    --font-size-base: 16px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 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: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
    letter-spacing: 0.01em;
}

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

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

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

ul {
    list-style: none;
}

/* ===========================
   Navigation Bar
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.logo-icon {
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

.nav-cta {
    display: flex;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    font-size: 0.95rem;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: none;
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* ===========================
   Hero Section
   =========================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #000 0%, #444 100%);
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    font-family: 'Montserrat', 'Arial', 'Helvetica Neue', Helvetica, sans-serif;
    max-width: 900px;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.85);
}

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

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--white);
    font-size: 0.875rem;
    opacity: 0.8;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: rotate(45deg);
    margin-top: var(--spacing-xs);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    40% {
        transform: translateY(-10px) rotate(45deg);
    }
    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay-1 {
    animation: fadeIn 1s ease-out 0.3s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s both;
}

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

/* ===========================
   Sections
   =========================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    font-family: 'Montserrat', 'Arial', 'Helvetica Neue', Helvetica, sans-serif;
    letter-spacing: -0.01em;
}

.section-title.centered {
    text-align: center;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-dark);
    line-height: 1.8;
    max-width: 800px;
}

.section-description.centered {
    text-align: center;
    margin: 0 auto var(--spacing-xl);
}

.section-intro {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

/* ===========================
   About Snapshot
   =========================== */
.about-snapshot {
    background-color: var(--white);
}

/* ===========================
   Core Strengths
   =========================== */
.strengths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.strength-card {
    background: var(--light-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
}

.strength-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.strength-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.strength-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.strength-card p {
    color: var(--text-dark);
    line-height: 1.7;
}

/* ===========================
   Industries Section
   =========================== */
.industries {
    background-color: var(--white);
}

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

.industry-card {
    background: var(--light-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    text-align: center;
    border: 2px solid transparent;
}

.industry-card:hover {
    border-color: var(--accent-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.industry-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.industry-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    background: linear-gradient(135deg, #000 0%, #444 100%);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-section .btn {
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-section .btn:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-4px);
}

/* ===========================
   About Us Section
   =========================== */
.about-section {
    background-color: var(--white);
}

.about-content {
    max-width: 900px;
    margin: var(--spacing-xl) auto 0;
}

.about-intro {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.about-intro h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    font-family: 'Montserrat', 'Arial', 'Helvetica Neue', Helvetica, sans-serif;
}

.about-intro p {
    font-size: 1.125rem;
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.vision-mission {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.vision-card,
.mission-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.vision-card h3,
.mission-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.vision-card p,
.mission-card p {
    line-height: 1.7;
    opacity: 0.95;
}

.approach {
    margin-bottom: var(--spacing-3xl);
}

.approach h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--text-dark);
}

.approach > p {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

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

.approach-step {
    text-align: center;
    padding: var(--spacing-lg);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.approach-step h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.approach-step p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.why-tabsquare {
    background-color: var(--light-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

.why-tabsquare h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--text-dark);
}

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

.why-list li {
    font-size: 1.125rem;
    color: var(--text-dark);
    padding: var(--spacing-sm);
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

/* ===========================
   Services Section
   =========================== */
.services-section {
    background-color: var(--light-bg);
}

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

.service-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border-top: 4px solid var(--primary-color);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.service-features {
    margin-top: var(--spacing-md);
}

.service-features li {
    color: var(--text-light);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 700;
}

/* ===========================
   Contact Section
   =========================== */
.contact-section {
    background-color: var(--white);
}

.contact-content {
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--light-bg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: 2.5rem;
}

.contact-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.contact-details a {
    color: var(--primary-color);
    font-weight: 500;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-details p {
    color: var(--text-light);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background-color: var(--dark-bg);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: 1rem;
    opacity: 0.8;
}

.footer-copyright {
    font-size: 0.875rem;
    opacity: 0.6;
    margin-top: var(--spacing-md);
}

/* ===========================
   Responsive Design - Mobile
   =========================== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-container {
        height: 60px;
    }

    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-cta {
        display: none;
    }

    /* Hero Section */
    .hero-section {
        padding-top: 60px;
        min-height: 90vh;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .btn-large {
        width: 100%;
    }

    /* Sections */
    section {
        padding: var(--spacing-2xl) 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-description {
        font-size: 1rem;
    }

    /* Grids */
    .strengths-grid,
    .industries-grid,
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .approach-steps {
        grid-template-columns: 1fr;
    }

    .vision-mission {
        grid-template-columns: 1fr;
    }

    .why-list {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    /* Typography */
    .cta-content h2 {
        font-size: 1.75rem;
    }

    .cta-content p {
        font-size: 1rem;
    }

    .about-intro h3 {
        font-size: 1.5rem;
    }

    .approach h3,
    .why-tabsquare h3 {
        font-size: 1.5rem;
    }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .strengths-grid,
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Screens */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

/* ===========================
   Scroll to Top Button
   =========================== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: scale(0);
    transition: all var(--transition-normal);
    z-index: 999;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.scroll-top-btn:hover {
    background-color: var(--primary-dark);
    transform: scale(1.1);
}

/* ===========================
   Animation Classes
   =========================== */
.strength-card,
.industry-card,
.service-card,
.contact-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.strength-card.animate-in,
.industry-card.animate-in,
.service-card.animate-in,
.contact-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Add staggered animation delay */
.strength-card:nth-child(1).animate-in { transition-delay: 0.1s; }
.strength-card:nth-child(2).animate-in { transition-delay: 0.2s; }
.strength-card:nth-child(3).animate-in { transition-delay: 0.3s; }
.strength-card:nth-child(4).animate-in { transition-delay: 0.4s; }

.industry-card:nth-child(1).animate-in { transition-delay: 0.1s; }
.industry-card:nth-child(2).animate-in { transition-delay: 0.15s; }
.industry-card:nth-child(3).animate-in { transition-delay: 0.2s; }
.industry-card:nth-child(4).animate-in { transition-delay: 0.25s; }
.industry-card:nth-child(5).animate-in { transition-delay: 0.3s; }

.service-card:nth-child(1).animate-in { transition-delay: 0.1s; }
.service-card:nth-child(2).animate-in { transition-delay: 0.2s; }
.service-card:nth-child(3).animate-in { transition-delay: 0.3s; }
.service-card:nth-child(4).animate-in { transition-delay: 0.4s; }
.service-card:nth-child(5).animate-in { transition-delay: 0.5s; }

.contact-item:nth-child(1).animate-in { transition-delay: 0.1s; }
.contact-item:nth-child(2).animate-in { transition-delay: 0.2s; }
.contact-item:nth-child(3).animate-in { transition-delay: 0.3s; }