/*
--- STYLESHEET ---
Table of Contents:
1.  :root Variables
2.  Global Styles & Resets
3.  Typography
4.  Layout & Container
5.  Buttons & Common Elements
6.  Header & Navigation
7.  Hero Section & 3D Cube
8.  Services Section
9.  Why Choose Us Section
10. ROI Calculator Section
11. Testimonials Section
12. Pricing Section
13. CTA Section
14. Footer
15. Page-Specific: Contact Page
16. Page-Specific: Legal Pages
17. Interactive Elements (Popup, Chat)
18. Animations & Keyframes
19. Responsive Design (Media Queries)
*/

/* 1. :root Variables */
:root {
    --primary-color: #00A79D;
    /* A vibrant teal */
    --secondary-color: #8A4FFF;
    /* A vibrant purple accent */
    --bg-dark-1: #0a192f;
    /* Deep navy blue - main background */
    --bg-dark-2: #112240;
    /* Lighter navy for cards/sections */
    --bg-dark-3: #1d335a;
    /* Even lighter for hover effects */
    --text-light: #ccd6f6;
    /* Light grey/off-white for headings */
    --text-dark: #8892b0;
    /* Slate grey for body text */
    --border-color: rgba(0, 167, 157, 0.2);
    /* Teal border */
    --white: #ffffff;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --shadow-color: rgba(2, 12, 27, 0.7);
    --font-family: 'Poppins', sans-serif;
    --header-height: 80px;
    --border-radius: 8px;
    --transition-speed: 0.3s ease;
}

/* 2. Global Styles & Resets */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-dark-1);
    color: var(--text-dark);
    font-family: var(--font-family);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--white);
}

section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

/* 3. Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-light);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
}

p {
    margin-bottom: 1rem;
    max-width: 70ch;
}

.section-header {
    margin-bottom: 60px;
    text-align: center;
}

.section-header p {
    margin-left: auto;
    margin-right: auto;
    font-size: 1.1rem;
    color: var(--text-dark);
}

/* 4. Layout & Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
}

/* 5. Buttons & Common Elements */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 167, 157, 0.2);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-light {
    background-color: var(--text-light);
    color: var(--bg-dark-1);
    border-color: var(--text-light);
}

.btn-light:hover {
    background-color: transparent;
    color: var(--text-light);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(204, 214, 246, 0.1);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* 6. Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed), padding var(--transition-speed);
    padding: 15px 0;
}

.header.scrolled {
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px var(--shadow-color);
    padding: 10px 0;
}

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-light);
}

.logo img {
    height: 80px;
    margin-right: 10px;
    transition: transform var(--transition-speed);
}

.logo a:hover img {
    transform: rotate(-15deg);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-list a {
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-speed);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--text-light);
}

.nav-list a:hover::after,
.nav-list a.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--text-light);
    transition: all 0.3s ease-in-out;
}

/* 7. Hero Section & 3D Cube */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: linear-gradient(rgba(10, 25, 47, 0.5), var(--bg-dark-1)),
        radial-gradient(circle at top right, rgba(0, 167, 157, 0.1), transparent 50%),
        radial-gradient(circle at bottom left, rgba(138, 79, 255, 0.1), transparent 50%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 40px;
}

.hero-content p {
    font-size: 1.2rem;
    margin: 20px 0 40px;
}

.typed-text-container {
    color: var(--primary-color);
    font-weight: 600;
}

.cursor {
    display: inline-block;
    background-color: var(--primary-color);
    width: 3px;
    animation: blink 1s infinite;
}

.hero-3d-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.scene {
    width: 250px;
    height: 250px;
    perspective: 1000px;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transform: translateZ(-125px);
    animation: rotateCube 20s infinite linear;
}

.cube-face {
    position: absolute;
    width: 250px;
    height: 250px;
    background: rgba(17, 34, 64, 0.7);
    border: 2px solid var(--border-color);
    color: var(--text-light);
    font-size: 2rem;
    font-weight: bold;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    backdrop-filter: blur(5px);
    transition: background var(--transition-speed);
}

.cube-face i {
    font-size: 3rem;
    color: var(--primary-color);
    transition: transform var(--transition-speed);
}

.cube-face span {
    font-size: 1.2rem;
}

.cube:hover .cube-face {
    background: rgba(29, 51, 90, 0.9);
}

.cube:hover .cube-face i {
    transform: scale(1.1);
}

.cube .front {
    transform: rotateY(0deg) translateZ(125px);
}

.cube .back {
    transform: rotateY(180deg) translateZ(125px);
}

.cube .right {
    transform: rotateY(90deg) translateZ(125px);
}

.cube .left {
    transform: rotateY(-90deg) translateZ(125px);
}

.cube .top {
    transform: rotateX(90deg) translateZ(125px);
}

.cube .bottom {
    transform: rotateX(-90deg) translateZ(125px);
}

.hero-shape-1,
.hero-shape-2 {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    z-index: -1;
}

.hero-shape-1 {
    width: 400px;
    height: 400px;
    background-color: var(--primary-color);
    top: 10%;
    right: 5%;
}

.hero-shape-2 {
    width: 300px;
    height: 300px;
    background-color: var(--secondary-color);
    bottom: 10%;
    left: 10%;
}


/* 8. Services Section */
.services-section {
    background-color: var(--bg-dark-2);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-dark-1);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed);
    text-align: center;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: inline-block;
}

.service-card h3 {
    margin-bottom: 15px;
}

.service-card p {
    font-size: 0.95rem;
}

.learn-more {
    font-weight: 600;
    display: inline-block;
    margin-top: 20px;
}

.learn-more i {
    transition: transform var(--transition-speed);
    margin-left: 5px;
}

.learn-more:hover i {
    transform: translateX(5px);
}

/* 9. Why Choose Us Section */
.why-choose-us-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.why-choose-us-image img {
    border-radius: var(--border-radius);
    box-shadow: 0 20px 50px var(--shadow-color);
}

.advantage-item {
    display: flex;
    gap: 25px;
    align-items: flex-start;
    margin-bottom: 30px;
}

.advantage-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: var(--bg-dark-2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.advantage-item:last-child {
    margin-bottom: 0;
}

/* 10. ROI Calculator Section */
.roi-calculator-section {
    background-color: var(--bg-dark-2);
}

.calculator-wrapper {
    background: var(--bg-dark-1);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px var(--shadow-color);
}

#roi-calculator-form .form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

#roi-calculator-form .form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-light);
}

#roi-calculator-form .form-group input {
    width: 100%;
    padding: 12px;
    background: var(--bg-dark-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 1rem;
}

.roi-results-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
    text-align: center;
}

.result-box {
    background-color: var(--bg-dark-2);
    padding: 25px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.result-box h4 {
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 10px;
}

.result-box p {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0;
}

.result-box small {
    font-size: 0.8rem;
    color: var(--text-dark);
}

/* 11. Testimonials Section */
.testimonial-slider-wrapper {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-slider {
    position: relative;
    height: 350px;
    /* Adjust as needed */
}

.testimonial-card {
    position: absolute;
    width: 100%;
    background: var(--bg-dark-2);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
    border-top: 4px solid var(--primary-color);
    opacity: 0;
    visibility: hidden;
    transform: translateX(30px);
    transition: opacity 0.5s ease, visibility 0.5s ease, transform 0.5s ease;
}

.testimonial-card.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.testimonial-quote {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.testimonial-card p {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
}

.author-info h4 {
    margin-bottom: 0;
}

.author-info span {
    font-size: 0.9rem;
    color: var(--text-dark);
}

.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-dark-2);
    color: var(--text-light);
    border: 1px solid var(--border-color);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-speed);
}

.slider-nav:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.slider-nav.prev {
    left: -60px;
}

.slider-nav.next {
    right: -60px;
}

/* 12. Pricing Section */
.pricing-section {
    background-color: var(--bg-dark-2);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: center;
}

.pricing-card {
    background: var(--bg-dark-1);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-speed);
}

.pricing-card.popular {
    transform: scale(1.05);
    border-color: var(--secondary-color);
    position: relative;
    z-index: 10;
}

.pricing-card:not(.popular):hover {
    transform: translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--secondary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header h3 {
    color: var(--primary-color);
}

.pricing-header p {
    margin-bottom: 25px;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 30px;
}

.price sup {
    font-size: 1.5rem;
    font-weight: 500;
    top: -1em;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-dark);
}

.features-list {
    text-align: left;
    margin-bottom: 40px;
}

.features-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.features-list i {
    margin-right: 10px;
    width: 20px;
}

.features-list .fa-check-circle {
    color: var(--success-color);
}

.features-list .fa-times-circle {
    color: var(--danger-color);
}

/* 13. CTA Section */
.cta-section {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    padding: 80px 0;
}

.cta-container {
    text-align: center;
    color: var(--white);
}

.cta-container h2 {
    color: var(--white);
}

.cta-container p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* 14. Footer */
.footer {
    background-color: var(--bg-dark-2);
    padding-top: 80px;
    color: var(--text-dark);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo img {
    height: 80px;
    margin-bottom: 20px;
}

.footer-logo a {
    font-size: 1.8rem;
}

.social-links {
    margin-top: 20px;
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-dark-1);
    color: var(--text-dark);
    border-radius: 50%;
    transition: all var(--transition-speed);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-links h3,
.footer-contact h3 {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--text-dark);
}

.footer-links ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.footer-contact ul li i {
    margin-right: 15px;
    margin-top: 5px;
    color: var(--primary-color);
}

.footer-contact a {
    color: var(--text-dark);
}

.footer-contact a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    font-size: 0.9rem;
}

/* 15. Page-Specific: Contact Page */
.page-header-section {
    padding-top: 160px;
    padding-bottom: 80px;
    text-align: center;
    background: linear-gradient(rgba(10, 25, 47, 0.7), var(--bg-dark-1)),
        url('https://images.pexels.com/photos/1591060/pexels-photo-1591060.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1') no-repeat center center/cover;
}

.page-header-section h1 {
    color: var(--white);
}

.page-header-section p {
    color: var(--text-light);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

.contact-page-section {
    padding: 100px 0;
}

.contact-page-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    background: var(--bg-dark-2);
    padding: 50px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.contact-info-block h2 {
    color: var(--primary-color);
}

.contact-details-list {
    margin-top: 30px;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-detail-item .icon {
    width: 50px;
    height: 50px;
    background: var(--bg-dark-1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.contact-detail-item .info h3 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.contact-detail-item .info p,
.contact-detail-item .info a {
    margin: 0;
    color: var(--text-dark);
}

.contact-form-wrapper {
    background: var(--bg-dark-1);
    padding: 40px;
    border-radius: var(--border-radius);
}

.contact-form .form-group {
    position: relative;
    margin-bottom: 25px;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-light);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    width: 100%;
    padding: 12px 15px;
    background: var(--bg-dark-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color var(--transition-speed);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-form .form-icon {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    color: var(--text-dark);
}

.contact-form input~.form-icon {
    top: 42px;
}

.contact-form select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238892b0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}


/* 16. Page-Specific: Legal Pages */
.legal-page .page-content {
    background-color: var(--bg-dark-2);
    padding: 50px;
    border-radius: var(--border-radius);
    max-width: 900px;
    margin: 0 auto;
}

.legal-page h2 {
    text-align: left;
    margin-top: 40px;
    margin-bottom: 20px;
    font-size: 1.75rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.legal-page p,
.legal-page li {
    color: var(--text-dark);
}

.legal-page ul {
    list-style: disc;
    padding-left: 25px;
    margin-bottom: 20px;
}

.legal-page ul li {
    margin-bottom: 10px;
}

.legal-page strong {
    color: var(--text-light);
}

.legal-page .page-actions {
    margin-top: 40px;
    text-align: center;
}

/* 17. Interactive Elements (Popup, Chat) */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 25, 47, 0.8);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
}

.popup-overlay.show {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background: var(--bg-dark-2);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
    max-width: 500px;
    width: 90%;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-speed);
}

.popup-overlay.show .popup-content {
    transform: scale(1);
}

.popup-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

.popup-icon {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: 20px;
}

.popup-content h3 {
    color: var(--text-light);
}

.popup-close-btn {
    margin-top: 20px;
}

/* Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;
}

.chat-bubble {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 167, 157, 0.4);
    transition: transform var(--transition-speed);
}

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

.chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    background: var(--bg-dark-2);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px var(--shadow-color);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
}

.chat-window.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.chat-header {
    background: var(--bg-dark-1);
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h4 {
    margin: 0;
    color: var(--text-light);
}

.close-chat-btn {
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1.5rem;
    cursor: pointer;
}

.chat-body {
    padding: 15px;
    height: 300px;
    overflow-y: auto;
}

.chat-message {
    margin-bottom: 15px;
}

.chat-message.agent p {
    background: var(--primary-color);
    color: var(--white);
    padding: 10px 15px;
    border-radius: 20px 20px 20px 5px;
    max-width: 80%;
    display: inline-block;
}

.chat-footer {
    display: flex;
    padding: 10px;
    border-top: 1px solid var(--border-color);
}

.chat-footer input {
    flex-grow: 1;
    border: none;
    background: var(--bg-dark-1);
    padding: 10px;
    border-radius: 20px;
    color: var(--text-light);
}

.chat-footer input:focus {
    outline: none;
}

.chat-footer button {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 15px;
}

/* 18. Animations & Keyframes */
@keyframes blink {
    50% {
        opacity: 0;
    }
}

@keyframes rotateCube {
    from {
        transform: rotateX(0) rotateY(0);
    }

    to {
        transform: rotateX(360deg) rotateY(360deg);
    }
}

/* Scroll Animations */
[data-animation] {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-animation].is-visible {
    opacity: 1;
    transform: none;
}

[data-animation="fade-in"] {
    transform: translateY(20px);
}

[data-animation="fade-in-up"] {
    transform: translateY(50px);
}

[data-animation="slide-in-left"] {
    transform: translateX(-50px);
}

[data-animation="slide-in-right"] {
    transform: translateX(50px);
}

[data-animation="zoom-in"] {
    transform: scale(0.9);
}

/* 19. Responsive Design (Media Queries) */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 2;
    }

    .hero-3d-wrapper {
        order: 1;
        margin-bottom: 40px;
    }

    .why-choose-us-wrapper {
        grid-template-columns: 1fr;
    }

    .why-choose-us-image {
        margin-bottom: 40px;
    }

    .contact-page-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    section {
        padding: 80px 0;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--bg-dark-2);
        box-shadow: -5px 0 15px var(--shadow-color);
        transition: right var(--transition-speed);
        padding-top: 100px;
        z-index: 1000;
    }

    .nav.show-menu {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }

    .nav-list a {
        font-size: 1.2rem;
    }

    .menu-toggle {
        display: block;
    }

    .menu-toggle.is-active .bar:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.is-active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.is-active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .header-actions .btn {
        display: none;
    }

    .slider-nav {
        display: none;
    }

    .testimonial-slider {
        height: auto;
    }

    .testimonial-card {
        position: relative;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-bottom: 30px;
    }

    .pricing-card.popular {
        transform: scale(1);
    }

    .pricing-grid {
        gap: 40px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .scene {
        width: 200px;
        height: 200px;
    }

    .cube-face {
        width: 200px;
        height: 200px;
    }

    .cube .front {
        transform: rotateY(0deg) translateZ(100px);
    }

    .cube .back {
        transform: rotateY(180deg) translateZ(100px);
    }

    .cube .right {
        transform: rotateY(90deg) translateZ(100px);
    }

    .cube .left {
        transform: rotateY(-90deg) translateZ(100px);
    }

    .cube .top {
        transform: rotateX(90deg) translateZ(100px);
    }

    .cube .bottom {
        transform: rotateX(-90deg) translateZ(100px);
    }

    .contact-page-wrapper,
    .contact-form-wrapper,
    .legal-page .page-content {
        padding: 25px;
    }

    .chat-window {
        width: 100%;
        max-width: 300px;
        right: -10px;
    }
}