/* ============================================
   DIGITAL FUTURE SOLUTIONS
   Architectural Precision Design System
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --obsidian: #0a0a0b;
    --charcoal: #141416;
    --slate: #1e1e20;
    --off-white: #f5f2eb;
    --warm-gray: #a8a49e;
    --electric-cyan: #00f5d4;
    --electric-accent: #00f0b5;
    --subtle-accent: #ffd700;
    
    /* Typography */
    --font-display: 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

body {
    font-family: var(--font-display);
    line-height: 1.6;
    color: var(--off-white);
    background-color: var(--obsidian);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.mono {
    font-family: var(--font-mono);
    font-size: 0.85em;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.highlight {
    color: var(--electric-cyan);
}

/* Grid Overlay - Technical Feel */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.5;
}

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

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 5%;
    transition: all var(--transition-smooth);
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 5%;
    width: 90%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.logo img {
    height: 80px;
    width: auto;
    display: block;
    transition: transform var(--transition-smooth);
}

.logo:hover img {
    transform: scale(1.02);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    position: relative;
    text-decoration: none;
    color: var(--off-white);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-links a::before {
    content: attr(data-label);
    position: absolute;
    top: -20px;
    left: 0;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--electric-cyan);
    opacity: 0;
    transition: all var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--electric-cyan);
    transition: width var(--transition-smooth);
}

.nav-links a:hover {
    color: var(--electric-cyan);
}

.nav-links a:hover::before {
    opacity: 1;
    top: -15px;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 28px;
    height: 2px;
    background-color: var(--off-white);
    transition: all var(--transition-smooth);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Section Scroll Offset */
section {
    scroll-margin-top: 100px;
    position: relative;
    z-index: 2;
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

#background-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: -2;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 10, 11, 0.92) 0%, rgba(10, 10, 11, 0.85) 100%);
    z-index: -1;
}

.grid-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background-image: 
        linear-gradient(90deg, transparent 49%, rgba(0, 245, 212, 0.03) 50%, transparent 51%);
    background-size: 60px 60px;
    z-index: -1;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
    width: 100%;
}

.hero-content {
    max-width: 900px;
    position: relative;
}

.hero-tag {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tag-line {
    width: 60px;
    height: 1px;
    background: var(--electric-cyan);
}

.tag-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--electric-cyan);
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 0.95;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.hero h1 .line-1,
.hero h1 .line-2 {
    display: block;
    color: var(--off-white);
}

.hero h1 .line-3 {
    display: block;
    color: var(--electric-cyan);
}

.hero p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--warm-gray);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.cta-primary,
.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-smooth);
}

.cta-primary {
    background: var(--electric-cyan);
    color: var(--obsidian);
    border: 1px solid var(--electric-cyan);
}

.cta-primary:hover {
    background: transparent;
    color: var(--electric-cyan);
    transform: translateY(-2px);
}

.cta-secondary {
    background: transparent;
    color: var(--off-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-secondary:hover {
    border-color: var(--off-white);
    transform: translateY(-2px);
}

.arrow {
    transition: transform var(--transition-smooth);
}

.cta-primary:hover .arrow,
.cta-secondary:hover .arrow {
    transform: translateX(5px);
}

/* Hero Meta */
.hero-meta {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meta-label {
    font-size: 0.75rem;
    color: var(--warm-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.meta-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: bounce 2s infinite;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--electric-cyan), transparent);
}

.scroll-text {
    font-size: 0.65rem;
    color: var(--warm-gray);
    letter-spacing: 0.2em;
}

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

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

.services {
    padding: var(--space-2xl) 0;
    background: var(--charcoal);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--electric-cyan), transparent);
    opacity: 0.3;
}

.section-header {
    text-align: center;
    max-width: 1400px;
    margin: 0 auto 4rem;
    padding: 0 5%;
}

.section-number {
    display: block;
    font-size: 0.7rem;
    color: var(--electric-cyan);
    margin-bottom: 1rem;
    letter-spacing: 0.3em;
}

.section-header h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    color: var(--warm-gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.service-card {
    background: var(--slate);
    padding: 3rem 2.5rem;
    position: relative;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--electric-cyan), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.service-card:hover {
    border-color: rgba(0, 245, 212, 0.2);
    transform: translateY(-5px);
}

.service-card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.card-number {
    font-size: 0.7rem;
    color: var(--electric-cyan);
    letter-spacing: 0.2em;
}

.card-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 245, 212, 0.05);
    border-radius: 50%;
}

.card-icon i {
    font-size: 1.2rem;
    color: var(--electric-cyan);
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.card-footer {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.tech-stack {
    font-size: 0.7rem;
    color: var(--electric-cyan);
    letter-spacing: 0.1em;
}

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

.about {
    padding: var(--space-2xl) 0;
    background: var(--obsidian);
    position: relative;
}

.about-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.about-header {
    text-align: center;
    margin-bottom: 4rem;
}

.about-header h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text .lead {
    font-size: 1.3rem;
    line-height: 1.7;
    color: var(--off-white);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.expertise-grid {
    display: grid;
    gap: 2rem;
    margin-top: 3rem;
}

.expertise-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.expertise-icon {
    font-size: 1.5rem;
    color: var(--electric-cyan);
    line-height: 1;
}

.expertise-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.expertise-item p {
    font-size: 0.9rem;
    color: var(--warm-gray);
    margin: 0;
}

.certifications {
    background: var(--charcoal);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.certifications h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

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

.cert-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--slate);
    transition: all var(--transition-smooth);
}

.cert-item:hover {
    transform: translateY(-5px);
    background: rgba(0, 245, 212, 0.05);
}

.cert-item img {
    height: 60px;
    width: auto;
    object-fit: contain;
    filter: grayscale(100%) brightness(0.8);
    transition: all var(--transition-smooth);
}

.cert-item:hover img {
    filter: grayscale(0%) brightness(1);
}

.cert-label {
    font-size: 0.65rem;
    color: var(--warm-gray);
    letter-spacing: 0.1em;
}

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

.contact {
    padding: var(--space-2xl) 0;
    background: var(--charcoal);
    position: relative;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--electric-cyan), transparent);
    opacity: 0.3;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.contact-header {
    text-align: center;
    margin-bottom: 4rem;
}

.contact-header h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.contact-subtitle {
    color: var(--warm-gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--slate);
    border: 1px solid transparent;
    transition: all var(--transition-smooth);
}

.info-card:hover {
    border-color: rgba(0, 245, 212, 0.2);
}

.info-icon {
    font-size: 1.5rem;
    color: var(--electric-cyan);
    line-height: 1;
}

.info-card h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-card p {
    color: var(--warm-gray);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--slate);
    color: var(--off-white);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
}

.social-link:hover {
    border-color: var(--electric-cyan);
    color: var(--electric-cyan);
    transform: translateY(-2px);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.75rem;
    color: var(--electric-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.form-group input,
.form-group textarea {
    padding: 1rem 1.5rem;
    background: var(--slate);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--off-white);
    font-family: var(--font-display);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--electric-cyan);
    background: rgba(0, 245, 212, 0.02);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.submit-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--electric-cyan);
    color: var(--obsidian);
    border: none;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.submit-button:hover {
    background: var(--electric-accent);
    transform: translateY(-2px);
}

.submit-button:disabled {
    background: var(--warm-gray);
    cursor: not-allowed;
    transform: none;
}

.button-arrow {
    transition: transform var(--transition-smooth);
}

.submit-button:hover .button-arrow {
    transform: translateX(5px);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0;
    text-align: center;
    font-size: 0.9rem;
}

.form-message.success {
    background: rgba(0, 245, 212, 0.1);
    color: var(--electric-cyan);
    border: 1px solid var(--electric-cyan);
}

.form-message.error {
    background: rgba(255, 0, 0, 0.1);
    color: #ff4444;
    border: 1px solid #ff4444;
}

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

footer {
    background: var(--obsidian);
    padding: var(--space-xl) 0 var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 1.5rem;
}

.footer-brand p {
    color: var(--warm-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    max-width: 400px;
}

.footer-tagline {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--electric-cyan);
}

.divider {
    color: var(--warm-gray);
}

.footer-links h3 {
    font-size: 0.8rem;
    color: var(--off-white);
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--warm-gray);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--electric-cyan);
    transform: translateX(5px);
    display: inline-block;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.75rem;
}

.footer-bottom p {
    color: var(--warm-gray);
}

.footer-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.meta-dot {
    width: 6px;
    height: 6px;
    background: var(--electric-cyan);
    border-radius: 50%;
}

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

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem 5%;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--obsidian);
        padding: 120px 2rem;
        gap: 2rem;
    }
    
    .nav-links a {
        font-size: 1.5rem;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .meta-divider {
        display: none;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .cta-primary,
    .cta-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid {
        gap: 1.5rem;
    }
}

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

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

/* Scroll animations can be added with Intersection Observer in JS */