:root {
    --color-black: #000000;
    --color-yellow: #FFB603;
    --color-white: #F8F8F8;
    --color-gray: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--color-gray);
    background-color: var(--color-white);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Navbar */
#mainNav {
    background-color: var(--color-black);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

#mainNav.scrolled {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand .navbar-logo {
    height: 50px;
    width: auto;
    transition: transform 0.3s ease;
}

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

.navbar-brand .brand-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-yellow);
    letter-spacing: 2px;
}

.navbar-nav .nav-link {
    color: var(--color-white) !important;
    font-weight: 500;
    margin: 0 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--color-yellow) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-yellow);
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray) 100%);
    color: var(--color-white);
    position: relative;
    padding-top: 80px;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-yellow);
    text-transform: uppercase;
    text-align: left;
    max-width: 100%;
}

.hero-subtitle {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--color-white);
    opacity: 0.9;
    text-align: left;
}

.hero-image-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.hero-image {
    width: 100%;
    max-width: 450px;
    height: auto;
    border-radius: 25px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    transition: all 0.4s ease;
    background: transparent;
}

.hero-image:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 70px rgba(255, 182, 3, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--color-yellow);
    font-size: 2rem;
    text-decoration: none;
}

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

/* Buttons */
.btn-primary {
    background-color: var(--color-yellow);
    border: none;
    color: var(--color-black);
    font-weight: 600;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    background-color: #e5a500;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 182, 3, 0.3);
}

/* Sections */
.section-padding {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-yellow);
}

.bg-light {
    background-color: var(--color-white) !important;
}

/* Services */
.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--color-yellow);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-yellow) 0%, #e5a500 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--color-black);
}

.service-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--color-gray);
    line-height: 1.6;
}

/* Portfolio Filter */
.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.filter-btn {
    background: white;
    border: 2px solid var(--color-black);
    color: var(--color-black);
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-yellow);
    border-color: var(--color-yellow);
    color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 182, 3, 0.3);
}

/* Portfolio */
.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 450px;
    background-color: white;
    display: block;
    text-decoration: none;
    color: inherit;
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.portfolio-image {
    width: 100%;
    height: 300px;
    object-fit: contain;
    background-color: #f8f8f8;
    transition: transform 0.3s ease;
    padding: 10px;
}

.portfolio-item:hover .portfolio-image {
    transform: scale(1.05);
}

.portfolio-info {
    padding: 1.5rem;
    background: white;
    position: relative;
    min-height: 150px;
}

.portfolio-info h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.portfolio-info p {
    color: var(--color-gray);
    margin: 0;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 4.8em;
}

.portfolio-link-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    color: var(--color-yellow);
    font-size: 1.2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-link-icon {
    opacity: 1;
}

/* Contact */
.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

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

.contact-item i {
    font-size: 2rem;
    color: var(--color-yellow);
    min-width: 40px;
}

.contact-item h5 {
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 0.5rem;
}

.contact-item a {
    color: var(--color-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--color-yellow);
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-form .form-control {
    border: 2px solid #e0e0e0;
    padding: 1rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus {
    border-color: var(--color-yellow);
    box-shadow: 0 0 0 0.2rem rgba(255, 182, 3, 0.25);
}

/* Footer */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 2rem 0;
}

.social-link {
    color: var(--color-white);
    font-size: 1.5rem;
    margin-left: 1rem;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--color-yellow);
}

/* Responsive */
@media (max-width: 991px) {
    .navbar-nav .nav-link {
        margin: 0.5rem 0;
    }
    
    .hero-title {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        text-align: center;
    }
    
    .hero-image-container {
        margin-top: 2rem;
        padding: 1rem;
    }
    
    .hero-image {
        max-width: 380px;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .hero-image {
        max-width: 300px;
    }
    
    .btn-primary {
        padding: 0.8rem 2rem;
    }
}