/* ===================================
   Du Tech - CSS Design System
   A Data First Company
   =================================== */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Based on Du Tech Logo */
    --primary-navy: #0F1F3D;
    --primary-cyan: #00D4FF;
    --accent-blue: #1E3A8A;
    --light-cyan: #7DD3FC;
    --white: #FFFFFF;
    --off-white: #F8FAFC;
    --light-gray: #E2E8F0;
    --medium-gray: #94A3B8;
    --dark-gray: #334155;
    --black: #0F172A;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-navy) 0%, var(--accent-blue) 100%);
    --gradient-accent: linear-gradient(135deg, var(--primary-cyan) 0%, var(--light-cyan) 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(15, 31, 61, 0.95) 0%, rgba(30, 58, 138, 0.9) 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', var(--font-primary);

    /* 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: 1rem;
    --radius-xl: 1.5rem;

    /* 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);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Z-Indices */
    --z-base: 1;
    --z-content: 2;
    --z-dropdown: 100;
    --z-sticky: 1000;
    --z-fixed: 1100;
    --z-modal: 1200;
}

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

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

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

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

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

ul {
    list-style: none;
}

/* ===== Typography ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-navy);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

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

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--dark-gray);
    letter-spacing: -0.01em;
}

.eyebrow {
    text-transform: uppercase;
    color: var(--primary-cyan);
    font-weight: 700;
    letter-spacing: 0.15em;
    font-size: 0.8rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

/* ===== Container ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-img {
    height: 52px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    line-height: 1.1;
}

.logo-text.tagline {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

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

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

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

.btn-nav {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-navy);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--primary-navy);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    background-color: var(--primary-navy);
}

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

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    filter: brightness(0.8) contrast(1.1);
}

.hero-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 20%, rgba(15, 31, 61, 0.8) 0%, rgba(15, 31, 61, 0.4) 50%, rgba(15, 31, 61, 0.9) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    z-index: 2;
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    color: var(--white);
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.gradient-text {
    background: linear-gradient(90deg, #00D4FF, #7DD3FC, #00D4FF);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shine 3s linear infinite;
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-cyan);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--light-gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--light-gray);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-cyan);
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--medium-gray);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-visual {
    position: relative;
    height: 500px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: float 6s ease-in-out infinite;
    z-index: 3;
}

.floating-card .card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    color: var(--primary-cyan);
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.4));
    transition: all var(--transition-base);
}

.floating-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 0 12px var(--primary-cyan));
}

.floating-card .card-text {
    font-weight: 600;
    color: var(--white);
    letter-spacing: 0.5px;
}

.card-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 30%;
    right: 10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 30%;
    left: 5%;
    animation-delay: 2s;
}

.card-4 {
    bottom: 10%;
    right: 15%;
    animation-delay: 3s;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--medium-gray);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--primary-cyan);
    border-bottom: 2px solid var(--primary-cyan);
    transform: rotate(-45deg);
    margin: var(--spacing-xs) auto 0;
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--medium-gray);
}

/* ===== Services Overview ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* ===== Clients Section ===== */
.clients-section {
    padding: var(--spacing-xl) 0;
    background: var(--white);
    border-bottom: 2px solid var(--off-white);
}

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

.clients-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--medium-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xl);
}

.clients-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xl);
    align-items: center;
}

.client-item {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--medium-gray);
    opacity: 0.6;
    transition: all var(--transition-base);
    cursor: default;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.client-item:hover {
    opacity: 1;
    color: var(--primary-cyan);
    transform: scale(1.1);
    background: var(--off-white);
}

@media (max-width: 768px) {
    .clients-grid {
        gap: var(--spacing-lg);
    }

}

/* ===== Cinematic Brand Grid ===== */
.clients-section {
    padding: var(--spacing-3xl) 0;
    background: #050b16;
    /* Near-Black Void */
    position: relative;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

/* Architectural Grid Lines */
.clients-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 2px 2px, rgba(255, 255, 255, 0.05) 1px, transparent 0);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
    pointer-events: none;
}

.cinematic-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
}

.cinematic-label {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 800;
    color: var(--primary-cyan);
    text-transform: uppercase;
    letter-spacing: 0.5em;
    padding: 4px 12px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 100px;
    margin-bottom: var(--spacing-lg);
}

.cinematic-title {
    color: var(--white);
    font-size: 2.75rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.brand-wall-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1px;
    /* Razor-thin separation */
    background: rgba(255, 255, 255, 0.05);
    /* Grid line color */
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.brand-vault-item {
    background: #050b16;
    padding: var(--spacing-lg) var(--spacing-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all 0.5s cubic-bezier(0.2, 1, 0.2, 1);
    position: relative;
    cursor: default;
}

.brand-vault-item::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background: var(--primary-cyan);
    transition: all 0.6s ease;
    box-shadow: 0 0 15px var(--primary-cyan);
}

.brand-vault-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 212, 255, 0.5);
    transform: translateY(-5px);
}

.brand-vault-item:hover::after {
    width: 60%;
    left: 20%;
}

.vault-icon {
    font-size: 0.45rem;
    /* Ultra-crisp micro-text */
    font-weight: 900;
    color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 11px;
    /* Exactly 1/3 of original 34px */
    height: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 1px;
    transition: all 0.4s ease;
}

.vault-text {
    font-family: var(--font-heading);
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    transition: all 0.4s ease;
}

.brand-vault-item:hover .vault-icon {
    color: var(--primary-cyan);
    border-color: var(--primary-cyan);
    transform: scale(1.1);
    background: rgba(0, 212, 255, 0.05);
}

.brand-vault-item:hover .vault-text {
    color: var(--white);
    letter-spacing: 0.25em;
}

@media (max-width: 768px) {
    .brand-wall-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.service-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 2px solid var(--light-gray);
    transition: all var(--transition-base);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.service-title {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-navy);
}

.service-description {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.service-link {
    color: var(--primary-cyan);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.service-link:hover {
    gap: var(--spacing-sm);
}

/* ===== Specializations ===== */
.bg-dark {
    background: var(--gradient-primary);
    color: var(--white);
}

.bg-dark .section-title,
.bg-dark h3 {
    color: var(--white);
}

.bg-dark .section-subtitle {
    color: var(--light-gray);
}

.specializations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.spec-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

.spec-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.spec-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.spec-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.spec-icon.palantir {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
}

.spec-icon.data {
    background: linear-gradient(135deg, #4ECDC4, #44A08D);
}

.spec-icon.ai {
    background: linear-gradient(135deg, #A8E6CF, #56AB2F);
}

.spec-icon.fullstack {
    background: linear-gradient(135deg, #FFD93D, #F6C90E);
}

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

.spec-list {
    list-style: none;
}

.spec-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--white);
}

.spec-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-cyan);
    font-weight: 700;
}

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

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

.industry-card {
    background: var(--off-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.industry-card:hover {
    background: var(--white);
    border-color: var(--primary-cyan);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

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

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

.industry-card p {
    color: var(--dark-gray);
    font-size: 1rem;
}

/* ===== Why Du Tech ===== */
.bg-gradient {
    background: linear-gradient(135deg, var(--off-white) 0%, var(--white) 100%);
}

.why-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.why-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.why-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.why-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-cyan);
    opacity: 0.3;
    font-family: var(--font-heading);
    line-height: 1;
}

.why-details h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-navy);
}

.why-details p {
    color: var(--dark-gray);
    font-size: 1rem;
}

.trust-badge {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.badge-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    flex-shrink: 0;
}

.badge-title {
    font-weight: 700;
    color: var(--primary-navy);
    font-size: 1.125rem;
}

.badge-subtitle {
    color: var(--medium-gray);
    font-size: 0.875rem;
}

/* ===== CTA Section ===== */
.cta-section {
    background: var(--gradient-primary);
    color: var(--white);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

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

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

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

.cta-buttons .btn-primary {
    background: var(--white);
    color: var(--primary-navy);
}

.cta-buttons .btn-secondary {
    border-color: var(--white);
    color: var(--white);
}

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

/* ===== Footer ===== */
.footer {
    background: var(--primary-navy);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

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

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

.footer-logo-img {
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer-logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-tagline {
    color: var(--primary-cyan);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    color: var(--light-gray);
    font-size: 0.875rem;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-links li,
.footer-contact li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--light-gray);
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--primary-cyan);
    padding-left: var(--spacing-xs);
}

.footer-contact li {
    color: var(--light-gray);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-cyan);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--light-gray);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: var(--light-gray);
    font-size: 0.875rem;
}

.footer-legal a:hover {
    color: var(--primary-cyan);
}

/* ===== Rich Visual Elements ===== */
.relative-z {
    position: relative;
    z-index: var(--z-content);
}

.section-overlay-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-base);
    overflow: hidden;
}

.bg-img-fade {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
    filter: grayscale(0.5) contrast(1.2);
}

.specializations.bg-dark {
    position: relative;
    background: var(--primary-navy);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

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

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

@media (max-width: 768px) {

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .services-grid,
    .specializations-grid,
    .industries-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ===== Process Graphic ===== */
.process-graphic {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--black);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 229, 255, 0.1);
    overflow: hidden;
}

.rich-process-image {
    width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.2));
}

@media (max-width: 768px) {
    .process-graphic {
        padding: var(--spacing-md);
        overflow-x: auto;
    }

    .rich-process-image {
        min-width: 800px;
        /* Allow horizontal scrolling on mobile for complex diagrams */
    }
}