/* Design System & Variables */
:root {
    /* Color Palette - Premium Corporate (Dark/Gold theme) */
    --clr-bg-main: #0a0a0a;
    --clr-bg-light: #141414;
    --clr-bg-card: rgba(25, 25, 25, 0.6);
    --clr-primary: #d4af37; /* Premium Gold */
    --clr-primary-hover: #b5952f;
    --clr-text-main: #f0f0f0;
    --clr-text-muted: #a0a0a0;
    --clr-white: #ffffff;
    
    /* Gradients */
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #aa8b2b 100%);
    --gradient-dark: linear-gradient(180deg, rgba(10,10,10,0) 0%, #0a0a0a 100%);
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 10px 30px rgba(212, 175, 55, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--clr-bg-main);
    color: var(--clr-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 100px 0;
}

.section-subtitle {
    display: inline-block;
    color: var(--clr-primary);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 15px;
    position: relative;
}

.section-subtitle::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 2px;
    background-color: var(--clr-primary);
    vertical-align: middle;
    margin-right: 15px;
}

.section-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 20px;
}

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

.section-header.center .section-subtitle::before,
.section-header.center .section-subtitle::after {
    content: '';
    display: inline-block;
    width: 40px;
    height: 2px;
    background-color: var(--clr-primary);
    vertical-align: middle;
}
.section-header.center .section-subtitle::after {
    margin-left: 15px;
    margin-right: 0;
}

.text-gray {
    color: var(--clr-text-muted);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 4px;
    font-weight: 500;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
    z-index: -1;
}

.btn:hover::before {
    width: 100%;
}

.btn-primary {
    background: var(--gradient-gold);
    color: var(--clr-bg-main);
    border: none;
    box-shadow: var(--shadow-gold);
}

.btn-secondary {
    background: transparent;
    color: var(--clr-white);
    border: 1px solid var(--clr-white);
}

.btn-secondary:hover {
    background: var(--clr-white);
    color: var(--clr-bg-main);
}

.btn-block {
    display: block;
    width: 100%;
}

.mt-4 {
    margin-top: 2rem;
}

/* Navbar (Glassmorphism) */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition-fast);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 15px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--clr-white);
    letter-spacing: 2px;
}

.logo span {
    color: var(--clr-primary);
    font-weight: 300;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a:not(.btn) {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--clr-text-main);
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--clr-primary);
    transition: var(--transition-fast);
}

.nav-links a:not(.btn):hover {
    color: var(--clr-primary);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--clr-white);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background-image: url('assets/images/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(10,10,10,0.9) 0%, rgba(10,10,10,0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5.5rem);
    color: var(--clr-white);
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--clr-primary);
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--clr-text-muted);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-img {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.about-img img {
    width: 100%;
    filter: brightness(0.9);
    transition: var(--transition-slow);
}

.about-img:hover img {
    transform: scale(1.05);
}

.experience-badge {
    position: absolute;
    bottom: -1px;
    left: -1px;
    background: var(--gradient-gold);
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-top-right-radius: 4px;
}

.experience-badge .number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--clr-bg-main);
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--clr-bg-main);
    text-transform: uppercase;
    text-align: center;
}

.about-content p {
    color: var(--clr-text-muted);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.about-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--clr-text-main);
    font-weight: 500;
}

.about-list i {
    color: var(--clr-primary);
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: var(--clr-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px 30px;
    border-radius: 4px;
    transition: var(--transition-slow);
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(212, 175, 55, 0.3);
    box-shadow: var(--shadow-gold);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--clr-primary);
    margin-bottom: 25px;
    transition: var(--transition-fast);
}

.service-card:hover .service-icon {
    background: var(--gradient-gold);
    color: var(--clr-bg-main);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--clr-text-muted);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.project-card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    group: hover;
}

.project-img {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project-card:hover .project-img img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(10,10,10,0.9) 0%, rgba(10,10,10,0.2) 50%, rgba(10,10,10,0) 100%);
    opacity: 0.8;
    transition: var(--transition-fast);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    width: 60px;
    height: 60px;
    background: var(--gradient-gold);
    color: var(--clr-bg-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    opacity: 0;
    transition: var(--transition-slow);
}

.project-card:hover .project-link {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 30px;
    z-index: 2;
    transition: var(--transition-fast);
}

.project-category {
    color: var(--clr-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 10px;
    display: block;
}

.project-info h3 {
    font-size: 1.8rem;
    color: var(--clr-white);
    margin-bottom: 5px;
}

.project-info p {
    color: var(--clr-text-muted);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-details {
    margin-top: 40px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item .icon {
    width: 50px;
    height: 50px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--clr-primary);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--clr-text-muted);
}

.contact-form-container {
    background: var(--clr-bg-card);
    padding: 50px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form h3 {
    font-size: 2rem;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--clr-white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--clr-primary);
    background: rgba(0, 0, 0, 0.8);
}

/* Footer */
.footer {
    background: #050505;
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-bottom p {
    color: var(--clr-text-muted);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--clr-text-muted);
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--clr-primary);
    color: var(--clr-bg-main);
    transform: translateY(-3px);
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    animation: fadeInUp 1s ease forwards;
    opacity: 0;
    transform: translateY(30px);
}

.delay-1 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; transition-delay: 0.4s; }

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

/* Responsive */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--clr-bg-light);
        flex-direction: column;
        justify-content: center;
        padding: 50px;
        transition: var(--transition-fast);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .contact-form-container {
        padding: 30px 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

/* WhatsApp Floating Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 35px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: all 0.3s ease;
}

.whatsapp-btn:hover {
    background-color: #128c7e;
    transform: scale(1.1);
    color: white;
}