/* ===========================
   DCLOUD9 Styles
   AI Platform Engineering Website
   Author: DCLOUD9 Ltd
   =========================== */

/* ===========================
   CSS Variables
   =========================== */
:root {
    --primary-ai: #00D9FF;
    --primary-dark: #0A2463;
    --accent-ai: #7B2CBF;
    --accent-secondary: #FF006E;
    --neutral-dark: #1A1A2E;
    --neutral-mid: #16213E;
    --neutral-light: #F8F9FA;
    --success: #00F5A0;
    --warning: #FFB800;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --gradient-primary: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent-ai) 100%);
    --gradient-accent: linear-gradient(135deg, var(--primary-ai) 0%, var(--accent-ai) 100%);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--neutral-dark);
    background: var(--neutral-light);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); color: var(--primary-dark); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

p { margin-bottom: 1rem; }

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===========================
   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-normal);
}

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

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--primary-dark);
    transition: var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    color: var(--primary-ai);
    transition: var(--transition-normal);
}

.logo:hover .logo-icon {
    color: var(--accent-ai);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--neutral-dark);
    font-weight: 600;
    transition: var(--transition-fast);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-ai);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--transition-normal);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.btn-contact {
    background: var(--gradient-primary);
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    transition: var(--transition-normal);
}

.btn-contact::after {
    display: none;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(123, 44, 191, 0.3);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

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

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.ai-grid-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 217, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero h1 {
    color: white;
    margin-bottom: 1rem;
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.hero-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--success);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.25rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.floating-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    color: white;
    animation: float 6s ease-in-out infinite;
    transition: var(--transition-normal);
}

.floating-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-10px);
}

.floating-card:nth-child(2) {
    animation-delay: 2s;
    margin-left: 2rem;
}

.floating-card:nth-child(3) {
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.floating-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: white;
}

.floating-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin: 0;
}

/* ===========================
   Sections
   =========================== */
section {
    padding: 6rem 0;
}

.section-header {
    margin-bottom: 4rem;
}

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

.section-tag {
    display: inline-block;
    color: var(--accent-ai);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

/* ===========================
   About Section
   =========================== */
.about-section {
    background: white;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.expertise-item {
    background: var(--neutral-light);
    padding: 2rem;
    border-radius: 15px;
    transition: var(--transition-normal);
    text-align: center;
}

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

.expertise-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.expertise-item h4 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.expertise-item p {
    font-size: 0.95rem;
    color: #666;
    margin: 0;
}

.results-banner {
    background: var(--gradient-primary);
    color: white;
    padding: 3rem;
    border-radius: 20px;
    margin-top: 3rem;
    text-align: center;
}

.results-banner h3 {
    color: white;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.result-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--success);
    display: block;
    margin-bottom: 0.5rem;
}

.result-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* ===========================
   Team Section
   =========================== */
.team-section {
    background: var(--neutral-light);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-normal);
}

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

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    background: var(--gradient-accent);
}

.team-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.team-role {
    color: var(--accent-ai);
    font-weight: 600;
    margin-bottom: 1rem;
}

.team-bio {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.team-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-light);
    border-radius: 50%;
    color: var(--primary-dark);
    transition: var(--transition-normal);
}

.social-icon:hover {
    background: var(--primary-ai);
    color: white;
    transform: translateY(-3px);
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
    color: #666;
}

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

.service-link {
    color: var(--accent-ai);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.service-link:hover {
    gap: 1rem;
}

/* ===========================
   Case Studies Section
   =========================== */
.case-studies-section {
    background: white;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.case-study-card {
    background: var(--neutral-light);
    padding: 2rem;
    border-radius: 20px;
    transition: var(--transition-normal);
}

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

.case-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.case-badge.biotech {
    background: rgba(0, 245, 160, 0.2);
    color: #00A86B;
}

.case-badge.healthcare {
    background: rgba(0, 217, 255, 0.2);
    color: #0088CC;
}

.case-badge.telecom {
    background: rgba(123, 44, 191, 0.2);
    color: var(--accent-ai);
}

.case-study-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.case-meta {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.case-challenge,
.case-solution {
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: #555;
}

.case-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}

.result-metric {
    text-align: center;
    padding: 1rem;
    background: white;
    border-radius: 10px;
}

.metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-ai);
}

.metric-label {
    display: block;
    font-size: 0.85rem;
    color: #666;
}

.case-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.tech-tag {
    padding: 0.4rem 0.8rem;
    background: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-dark);
}

/* ===========================
   Testimonials Section
   =========================== */
.testimonials-section {
    background: var(--neutral-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.quote-icon {
    font-size: 3rem;
    color: var(--primary-ai);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1.05rem;
    color: #666;
    margin-bottom: 1.5rem;
    font-style: italic;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author strong {
    display: block;
    color: var(--primary-dark);
    font-size: 1.1rem;
    font-style: normal;
}

.testimonial-author span {
    color: #999;
    font-size: 0.9rem;
    display: block;
    margin-top: 0.25rem;
}

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

.cta-content h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

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

.btn-primary-light:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.4);
}

.btn-secondary-light {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

.social-link-footer {
    color: white;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.social-link-footer:hover {
    color: var(--success);
    transform: translateY(-3px);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--neutral-dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-ai);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ===========================
   Animations
   =========================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for grid items */
.expertise-item:nth-child(1) { transition-delay: 0.1s; }
.expertise-item:nth-child(2) { transition-delay: 0.2s; }
.expertise-item:nth-child(3) { transition-delay: 0.3s; }
.expertise-item:nth-child(4) { transition-delay: 0.4s; }

.service-card:nth-child(1) { transition-delay: 0.1s; }
.service-card:nth-child(2) { transition-delay: 0.2s; }
.service-card:nth-child(3) { transition-delay: 0.3s; }

.case-study-card:nth-child(1) { transition-delay: 0.1s; }
.case-study-card:nth-child(2) { transition-delay: 0.2s; }
.case-study-card:nth-child(3) { transition-delay: 0.3s; }

/* ===========================
   Notification System
   =========================== */
.notification {
    position: fixed;
    top: 100px;
    right: -400px;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    transition: right 0.3s ease;
    max-width: 350px;
}

.notification.show {
    right: 20px;
}

.notification-success {
    border-left: 4px solid var(--success);
}

.notification-error {
    border-left: 4px solid var(--accent-secondary);
}

/* ===========================
   Responsive Design
   =========================== */

/* Tablet */
@media (max-width: 968px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .hero-content,
    .about-grid,
    .services-grid,
    .case-studies-grid,
    .team-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-visual {
        display: none;
    }
    
    .floating-card:nth-child(2) {
        margin-left: 0;
    }
    
    section {
        padding: 4rem 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .btn-contact {
        width: 100%;
        text-align: center;
    }
}

/* Mobile */
@media (max-width: 640px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .stat-item {
        align-items: flex-start;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .result-number {
        font-size: 2.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .case-results {
        grid-template-columns: 1fr;
    }
    
    .team-social {
        flex-wrap: wrap;
    }
}

/* Extra Small Mobile */
@media (max-width: 380px) {
    .container {
        padding: 0 1rem;
    }
    
    .navbar .container {
        padding: 1rem;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero h2 {
        font-size: 1.1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    .navbar,
    .mobile-menu-toggle,
    .cta-section,
    .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}

/* ===========================
   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: 3px solid var(--primary-ai);
    outline-offset: 2px;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-ai: #0099CC;
        --accent-ai: #6600CC;
        --success: #00CC66;
    }
    
    .btn {
        border-width: 3px;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    /* Uncomment to enable dark mode
    :root {
        --neutral-light: #1A1A2E;
        --neutral-dark: #F8F9FA;
    }
    
    body {
        background: var(--neutral-dark);
        color: var(--neutral-light);
    }
    */
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* ===========================
   End of Styles
   =========================== */