:root {
    --primary-color: #0056b3; /* Professional Blue */
    --secondary-color: #000000; /* Black */
    --background-color: #ffffff; /* White */
    --text-color: #333333;
    --light-gray: #f4f4f4;
    --accent-blue: #007bff;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --font-family: 'Inter', sans-serif;
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --secondary-color: #ffffff;
    --background-color: #1a1a1a;
    --text-color: #e5e5e5;
    --light-gray: #2d2d2d;
    --accent-blue: #60a5fa;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

[data-theme="dark"] header {
    background-color: rgba(26, 26, 26, 0.95);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color var(--transition-speed);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.lang-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    background: none;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
}

.lang-btn.active, .lang-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    background: linear-gradient(135deg, rgba(0,86,179,0.1) 0%, rgba(0,0,0,0.05) 100%);
    margin-top: 60px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-color);
    opacity: 0.8;
}

.cta-btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,86,179,0.3);
}

/* Services Section */
.services {
    padding: 5rem 5%;
    background-color: var(--background-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--light-gray);
    padding: 2rem;
    border-radius: var(--border-radius);
    transition: transform 0.3s;
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

/* Pricing Section */
.pricing {
    padding: 5rem 5%;
    background-color: var(--light-gray);
    text-align: center;
}

.price-card {
    background-color: var(--background-color);
    padding: 3rem;
    border-radius: var(--border-radius);
    max-width: 500px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 1rem 0;
}

.price-details {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.price-details li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.price-details li::before {
    content: "✓";
    color: var(--primary-color);
    font-weight: bold;
}

/* Contact/Booking Section */
.booking {
    padding: 5rem 5%;
    background-color: var(--background-color);
    text-align: center;
}

.contact-form {
    max-width: 600px;
    margin: 3rem auto;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: var(--border-radius);
    font-family: inherit;
    background-color: var(--background-color);
    color: var(--text-color);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* Chatbot Widget */
.chatbot-widget {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: transform 0.3s;
}

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

.chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    display: none; /* Hidden by default */
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.1);
}

.chat-window.active {
    display: flex;
}

.chat-header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-chat {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
}

.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.bot-message {
    background-color: var(--light-gray);
    color: var(--text-color);
    align-self: flex-start;
    border-bottom-left-radius: 0;
}

.user-message {
    background-color: var(--primary-color);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 0;
}

.chat-input-area {
    padding: 1rem;
    border-top: 1px solid rgba(0,0,0,0.1);
    display: flex;
    gap: 0.5rem;
}

.chat-input {
    flex: 1;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 20px;
    outline: none;
}

.send-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 3rem 5%;
    text-align: center;
}

.social-links {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Simplified for mobile, ideally hamper menu */
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .chat-window {
        width: 90vw;
        right: 5vw; /* Center horizontally broadly */
        height: 60vh;
    }
}

/* Chatbot Widget Updates */

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    overflow-y: auto;
    padding-bottom: 2rem; 
}

/* Chat Options Container */
.chat-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
    justify-content: flex-end; 
}

/* Option Buttons */
.option-btn {
    background-color: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    font-family: inherit;
}

.option-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.chat-window {
    height: 550px; 
}

.typing-indicator {
    padding: 10px;
    background: var(--light-gray);
    border-radius: 1rem;
    align-self: flex-start;
    display: flex;
    gap: 5px;
    width: fit-content;
    border-bottom-left-radius: 0;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: #999;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* AI Tools Section Styles */

.tool-section {
    padding: 4rem 5%;
    text-align: center;
    background-color: var(--background-color);
}

.tool-section.alt-bg {
    background-color: var(--light-gray);
}

.tool-container {
    max-width: 800px;
    margin: 2rem auto;
    background: var(--background-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.section-subtitle {
     opacity: 0.8;
     margin-bottom: 2rem;
}

/* Forms */
#estimatorForm, #readinessForm {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

#estimatorForm select, #estimatorForm input[type="text"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: var(--light-gray);
    color: var(--text-color);
}

/* Checkbox specific */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0;
}

.checkbox-container {
    display: block;
    position: relative;
    padding-left: 35px;
    margin-bottom: 2px;
    cursor: pointer;
    font-size: 1rem;
    user-select: none;
    color: var(--text-color);
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #eee;
    border-radius: 4px;
}

.checkbox-container:hover input ~ .checkmark {
    background-color: #ccc;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
}

/* Readiness Grid */
.questions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.question-card {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.question-text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Toggles for Yes/No */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 24px;
}

.toggle-switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary-color);
  opacity: 1;
}

input:checked + .slider:before {
  transform: translateX(26px);
}

/* Results Display */
.result-card {
    margin-top: 2rem;
    padding: 2rem;
    background: #fdfdfd;
    border: 1px solid #eee;
    border-radius: 12px;
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.result-card.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.price-display {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 1rem 0;
}

.price-display small {
    font-size: 1rem;
    color: #666;
    font-weight: 400;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 8px solid var(--primary-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.score-circle span:last-child {
    font-size: 0.9rem;
    color: #666;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

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

.cta-btn.small {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}