:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white-color: #fff;
    --shadow-depth-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-depth-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-depth-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.8;
    color: var(--dark-color);
    background-color: var(--light-color);
    background-image: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%239C92AC" fill-opacity="0.04"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
}

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

ul {
    list-style: none;
}

header {
    background-color: var(--white-color);
    padding: 1rem 3rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-depth-1);
}

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

.lang-switcher {
    display: flex;
    gap: 0.5rem;
    margin-left: 2rem;
}

.lang-switcher button {
    background: none;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.lang-switcher button:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.lang-switcher button.active {
    background-color: var(--primary-color);
    color: var(--white-color);
}

header nav ul {
    display: flex;
}

header nav ul li {
    margin-left: 2rem;
}

.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.unsplash.com/photo-1576091160550-2173dba999ef?q=80&w=2070&auto=format&fit=crop') center/cover no-repeat;
    color: var(--white-color);
    padding: 6rem 2rem;
    text-align: center;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-text p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
}

.cta-button {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-depth-2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-depth-3);
    filter: brightness(1.1);
}

.services, .process, .testimonials, .contact {
    padding: 5rem 2rem;
    text-align: center;
}

.services h2, .process h2, .testimonials h2, .contact h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.service-cards, .testimonial-cards, .process-steps {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.card, .step {
    background-color: var(--white-color);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-depth-2);
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover, .step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-depth-3);
}

.card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.card h3, .step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step span {
    display: inline-block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    background: var(--light-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    line-height: 60px;
    box-shadow: var(--shadow-depth-1);
}

.testimonials .card {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.testimonials .card span {
    display: block;
    margin-top: 1.5rem;
    font-weight: bold;
    font-style: italic;
}

.contact form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact input, .contact textarea {
    padding: 1rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
    box-shadow: var(--shadow-depth-1);
    transition: box-shadow 0.3s;
}

.contact input:focus, .contact textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    text-align: center;
    padding: 2rem;
}

/* Chatbot Styles */
.chatbot-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 2000;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--white-color);
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-depth-3);
    transition: transform 0.3s ease;
}

.chat-toggle:hover {
    transform: scale(1.1);
}

.chat-window {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 500px;
    background-color: var(--white-color);
    border-radius: 12px;
    box-shadow: var(--shadow-depth-3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s ease;
}

.chat-window.hidden {
    display: none;
}

.chat-header {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

#chat-close {
    background: none;
    border: none;
    color: var(--white-color);
    font-size: 1.5rem;
    cursor: pointer;
}

.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    background-color: #f0f2f5;
}

.message {
    padding: 0.8rem 1rem;
    border-radius: 12px;
    max-width: 80%;
    font-size: 0.9rem;
    line-height: 1.4;
}

.bot-message {
    background-color: var(--white-color);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}

.user-message {
    background-color: var(--primary-color);
    color: var(--white-color);
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.faq-options {
    padding: 1rem;
    border-top: 1px solid #eee;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background-color: var(--white-color);
}

.faq-button {
    background-color: var(--light-color);
    border: 1px solid #ddd;
    padding: 0.6rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    text-align: left;
    transition: all 0.2s ease;
}

.faq-button:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
}