/* ==========================================
   HAIRSPRING - PROFESSIONAL B2B CSS STYLES
   Monochromatic design with deep blue accent
   ========================================== */

/* ==========================================
   CSS CUSTOM PROPERTIES & RESET
   ========================================== */

:root {
    /* Color Palette - Monochromatic with Blue Accent */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --color-black: #000000;
    
    /* Accent Colors */
    --color-primary: #1e40af; /* Deep Blue */
    --color-primary-dark: #1e3a8a;
    --color-primary-light: #3b82f6;
    --color-success: #059669;
    --color-warning: #d97706;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
    
    /* Layout */
    --max-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

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); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-600);
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* ==========================================
   LAYOUT COMPONENTS
   ========================================== */

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ==========================================
   BUTTONS & CTAs
   ========================================== */

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
}

.cta-button.primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--box-shadow);
}

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

.cta-button.secondary {
    background-color: var(--color-white);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
}

.cta-button.secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.cta-button.large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.cta-button.full-width {
    width: 100%;
    justify-content: center;
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */

.header {
    background-color: var(--color-white);
    box-shadow: var(--box-shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-brand {
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin: 0;
}

.tagline {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    font-style: italic;
    margin-top: -4px;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: 500;
    color: var(--color-gray-700);
    transition: var(--transition);
}

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

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

.phone-number {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-gray-700);
    cursor: pointer;
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero {
    padding: 120px 0 var(--spacing-5xl);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-900);
}

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

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.hero-motto {
    margin-bottom: var(--spacing-2xl);
}

.motto-text {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-gray-500);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.metric-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
    text-align: center;
}

.metric-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: 500;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */

.about {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.founder-profile {
    background-color: var(--color-gray-50);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
}

.credentials {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.credential-item i {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xs);
}

.credential-item h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray-900);
}

.credential-item p {
    color: var(--color-gray-600);
    margin: 0;
}

.approach-points {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.point {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-gray-700);
}

.point i {
    color: var(--color-primary);
    width: 20px;
}

/* ==========================================
   SERVICES SECTION
   ========================================== */

.services {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-4xl);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background-color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.service-icon i {
    font-size: var(--font-size-2xl);
    color: var(--color-white);
}

.service-card h3 {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

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

/* ==========================================
   PROCESS SECTION
   ========================================== */

.process {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-white);
}

.process-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    max-width: 800px;
    margin: 0 auto;
}

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

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-900);
}

.step-content p {
    color: var(--color-gray-600);
    margin: 0;
}

/* ==========================================
   WHY CHOOSE US SECTION
   ========================================== */

.why-choose {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-gray-50);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
}

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

.benefit-item i {
    font-size: var(--font-size-4xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.benefit-item h3 {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.benefit-item p {
    color: var(--color-gray-600);
    margin: 0;
}

/* ==========================================
   CASE STUDIES SECTION
   ========================================== */

.case-studies {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-white);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.case-study {
    background-color: var(--color-gray-50);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-primary);
}

.case-study-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.case-study-header h3 {
    color: var(--color-gray-900);
    margin: 0;
}

.industry-tag {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.case-study-metrics {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.metric {
    text-align: center;
}

.metric-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.case-study p {
    font-style: italic;
    color: var(--color-gray-600);
    margin: 0;
}

/* ==========================================
   CONTACT SECTION
   ========================================== */

.contact {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-info h3 {
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray-900);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.contact-method {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.contact-method i {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    width: 24px;
}

.contact-method .label {
    font-weight: 600;
    color: var(--color-gray-700);
    display: block;
    font-size: var(--font-size-sm);
}

.contact-method a,
.contact-method span:not(.label) {
    color: var(--color-gray-600);
    font-size: var(--font-size-base);
}

.social-proof {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.trust-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-success);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ==========================================
   CONTACT FORM
   ========================================== */

.contact-form-container {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
}

.contact-form h3 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-gray-900);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-disclaimer {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-md);
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

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

.footer-brand h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-gray-400);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: var(--color-gray-400);
    line-height: 1.6;
}

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

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

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-gray-400);
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.footer-legal a {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-actions {
        gap: var(--spacing-md);
    }
    
    .phone-number {
        display: none;
    }
    
    .hero {
        padding: 100px 0 var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button.large {
        width: 100%;
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .process-step {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
    
    .case-study-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .metric-card {
        padding: var(--spacing-md);
    }
    
    .service-card,
    .contact-form-container {
        padding: var(--spacing-lg);
    }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

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

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mx-auto { margin-left: auto; margin-right: auto; }

.hidden { display: none; }
.block { display: block; }
.inline { display: inline; }
.flex { display: flex; }

/* ==========================================
   ANIMATIONS
   ========================================== */

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

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

/* Smooth scroll offset for fixed header */
section[id] {
    scroll-margin-top: 80px;
}

/* ==========================================
   INTERACTIVE STATES & FORM VALIDATION
   ========================================== */

/* Header scroll state */
.header-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* Active navigation link */
.nav-link-active {
    color: var(--color-primary) !important;
    font-weight: 600;
}

/* Mobile navigation active state */
.nav-menu-active {
    display: flex !important;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow-lg);
    z-index: 999;
}

/* Form validation styles */
.field-error {
    border-color: #dc2626 !important;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1) !important;
}

.error-message {
    color: #dc2626;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.error-message::before {
    content: "⚠";
    font-size: var(--font-size-sm);
}

/* Form submission messages */
.form-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.form-message-success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.form-message-error {
    background-color: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

/* Focus indicators for accessibility */
.keyboard-focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Loading states */
.cta-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Checkbox styling */
.checkbox-label input[type="checkbox"] {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-gray-300);
    border-radius: 3px;
    position: relative;
    cursor: pointer;
    margin: 0;
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-white);
    font-size: 12px;
    font-weight: bold;
}

/* Additional mobile navigation styles */
@media (max-width: 768px) {
    .nav-menu {
        position: static;
    }
    
    .nav-menu-active .nav-link {
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--color-gray-200);
    }
    
    .nav-menu-active .nav-link:last-child {
        border-bottom: none;
    }
}