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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* RTL Support */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .navbar-nav {
    flex-direction: row-reverse;
}

[dir="rtl"] .hero-content {
    text-align: right;
}

/* Header and Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
    color: #2c5aa0 !important;
}

.navbar-nav .nav-link {
    color: #333 !important;
    font-weight: 500;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #2c5aa0 !important;
}

.language-selector {
    margin-left: 20px;
}

.language-selector select {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 5px 10px;
    background: white;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/battery_disassembly_3d_layout.png') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn-primary {
    background: #ff6b6b;
    border: none;
    padding: 12px 30px;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.6s both;
}

.btn-primary:hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 107, 0.3);
}

.btn-outline-light {
    border: 2px solid white;
    padding: 12px 30px;
    font-size: 1.1rem;
    border-radius: 50px;
    margin-left: 15px;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.8s both;
}

.btn-outline-light:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    font-weight: bold;
    color: #2c5aa0;
}

/* Features Section */
.features {
    background: #f8f9fa;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    border: none;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    color: #ff6b6b;
    margin-bottom: 1rem;
}

.feature-card h4 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-weight: bold;
}

/* Solutions Section */
.solution-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.solution-image {
    height: 250px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.solution-content {
    padding: 2rem;
}

.solution-content h4 {
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-weight: bold;
}

/* About Section */
.about {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.about .section-title {
    color: white;
}

/* Contact Section */
.contact {
    background: #f8f9fa;
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-control {
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 12px 15px;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #2c5aa0;
    box-shadow: 0 0 0 0.2rem rgba(44, 90, 160, 0.25);
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: #ff6b6b;
    margin-bottom: 1rem;
}

.footer a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #ff6b6b;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    margin-top: 2rem;
    padding-top: 1rem;
    text-align: center;
    color: #bdc3c7;
}

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

.fade-in-up {
    animation: fadeInUp 1s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn-outline-light {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

/* Loading Animation */
.loading {
    display: none;
    text-align: center;
    padding: 20px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #2c5aa0;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #2c5aa0;
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: #ff6b6b;
    transform: translateY(-2px);
}

/* WhatsApp Chat Button */
.whatsapp-chat {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background: #25d366;
    color: white;
    border-radius: 50px;
    padding: 15px 20px;
    text-decoration: none;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
}

.whatsapp-chat:hover {
    background: #128c7e;
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-chat i {
    margin-right: 8px;
    font-size: 1.2rem;
}