/* Custom CSS Variables - Dark Theme */
:root {
    --primary-dark: #0a0f1c;
    --secondary-dark: #1a1d29;
    --tertiary-dark: #2d3748;
    --primary-blue: #1e293b;
    --accent-blue: #334155;
    --primary-gold: #d4af37;
    --accent-gold: #b8941f;
    --text-dark: #f8fafc;
    --text-light: #cbd5e1;
    --text-muted: #94a3b8;
    --white: #ffffff;
    --success: #16a34a;
    --error: #dc2626;
    --warning: #ca8a04;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--primary-dark);
    overflow-x: hidden;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    border-bottom: 1px solid var(--accent-blue);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(10, 15, 28, 0.95);
    border-bottom: 1px solid var(--primary-gold);
    backdrop-filter: blur(10px);
}

.navbar {
    padding: 1rem 0;
}

.logo {
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-dark);
}

.logo-img img {
    height: 40px;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.logo-text {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-gold);
}

.nav-link {
    color: var(--text-light) !important;
    transition: color 0.3s ease;
    position: relative;
}

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

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

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

/* Mobile Menu */
.mobile-menu {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    border: none;
    background: transparent;
    padding: 0.25rem 0.5rem;
}

.mobile-menu span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    margin: 3px 0;
    transition: 0.3s;
    display: block;
}

/* Hero Section */
.hero {
    position: relative;
    color: white;
    min-height: 100vh;
    padding-top: 80px; /* Offset for fixed header */
}

#heroCarousel, .carousel-inner, .carousel-item {
    height: 100vh;
}

.carousel-item {
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

/* Overlay for text on top of the carousel */
.hero-content-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5); /* Dark overlay for text readability */
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
}

.hero h1 {
    color: var(--primary-gold);
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.hero p {
    opacity: 0;
    animation: fadeInUp 1s ease 0.3s forwards;
}

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

.cta-button {
    background: linear-gradient(45deg, var(--primary-gold), var(--accent-gold));
    color: var(--primary-dark) !important;
    border: none;
    border-radius: 50px;
    padding: 15px 40px;
    font-weight: bold;
    text-decoration: none !important;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    transition: all 0.3s ease;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.6);
    background: linear-gradient(45deg, var(--accent-gold), var(--primary-gold));
    color: var(--primary-dark) !important;
}

/* Sections */
.section {
    background-color: var(--secondary-dark);
}

.section h2 {
    color: var(--text-dark);
    position: relative;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(45deg, var(--primary-gold), var(--accent-blue));
}

/* Products Section */
.product-card {
    background: var(--tertiary-dark);
    border: 2px solid transparent;
    border-radius: 15px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    color: var(--text-dark);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    transition: left 0.6s ease;
}

.product-card:hover::before {
    left: 100%;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-gold);
}

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, var(--accent-blue), var(--primary-gold));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-dark);
    transition: transform 0.3s ease;
}

.product-card:hover .product-icon {
    transform: scale(1.1);
}

/* Calculator Section */
.calculator {
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-dark));
}

.calculator-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.form-label {
    color: var(--primary-gold);
    font-weight: bold;
}

.form-control,
.form-select {
    background: var(--secondary-dark);
    border: 1px solid var(--accent-blue);
    color: var(--text-dark);
}

.form-control:focus,
.form-select:focus {
    background: var(--tertiary-dark);
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 0.2rem rgba(212, 175, 55, 0.25);
    color: var(--text-dark);
}

.calc-button {
    background: var(--primary-gold);
    color: var(--primary-dark) !important;
    border: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.calc-button:hover {
    background: var(--accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}

.calc-result {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    display: none;
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.calc-result.show {
    display: block;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.material-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    margin: 0.5rem 0;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.error-message {
    display: none;
    margin-top: 0.25rem;
}

.form-group.error .form-control,
.form-group.error .form-select {
    border-color: var(--error);
}

.form-group.error .error-message {
    display: block;
}

/* About Section */
.about {
    background: linear-gradient(135deg, var(--secondary-dark), var(--tertiary-dark));
}

.about-text {
    color: var(--text-light);
}

.about-text h2 {
    color: var(--text-dark);
}

.stat-item {
    background: var(--primary-dark);
    border: 1px solid var(--accent-blue);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    color: var(--primary-gold);
}

/* Social Section */
.social-section {
    background: var(--primary-dark);
    color: var(--text-dark);
}

.social-link {
    width: 60px;
    height: 60px;
    background: var(--accent-blue);
    color: var(--text-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-gold);
    color: var(--primary-dark);
    transform: translateY(-5px) scale(1.1);
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, var(--primary-dark), var(--accent-blue));
}

.contact-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 2.5rem;
    color: var(--primary-gold);
}

.map-container {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: var(--text-light);
    border-top: 1px solid var(--accent-blue);
}

/* Floating WhatsApp Button */
.floating-whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    animation: pulse 2s infinite;
    transition: transform 0.3s ease;
}

.floating-whatsapp:hover {
    transform: scale(1.1);
    color: white;
}

@keyframes pulse {
    0% { box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 25px rgba(37, 211, 102, 0.8); }
    100% { box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gold);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
}

/* Bootstrap Overrides */
.text-muted {
    color: var(--text-muted) !important;
}

.btn:focus {
    box-shadow: none;
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(10, 15, 28, 0.98);
        margin-top: 1rem;
        padding: 1rem;
        border-radius: 10px;
        border: 1px solid var(--accent-blue);
    }
    
    .navbar-nav {
        text-align: center;
    }
    
    .nav-item {
        margin: 0.5rem 0;
    }
}

@media (max-width: 768px) {
    .hero {
        padding-top: 80px;
    }
    
    .hero h1 {
        font-size: 2.5rem !important;
    }
    
    .display-2 {
        font-size: 2.5rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.8rem;
    }
    
    .section {
        padding: 3rem 0 !important;
    }
    
    .calculator,
    .about,
    .contact {
        padding: 3rem 0 !important;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem !important;
    }
    
    .cta-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
    
    .product-card {
        margin-bottom: 1rem;
    }
    
    .floating-whatsapp {
        bottom: 15px;
        right: 15px;
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* Loading Animation */
.loading {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Image Placeholder */
.image-placeholder {
    background: linear-gradient(45deg, var(--secondary-dark), var(--tertiary-dark));
    border: 2px dashed var(--accent-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    color: var(--text-muted);
    font-size: 1.2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.image-placeholder:hover {
    border-color: var(--primary-gold);
    color: var(--primary-gold);
}

/* Success and Error States */
.success {
    color: var(--success);
}

.error {
    color: var(--error);
}

/* Utility Classes */
.text-gold {
    color: var(--primary-gold);
}

.bg-dark-custom {
    background-color: var(--primary-dark);
}

.bg-secondary-dark {
    background-color: var(--secondary-dark);
}

.border-gold {
    border-color: var(--primary-gold);
}