:root {
    --primary-color: #F97316; /* Orange */
    --secondary-color: #1E293B; /* Dark Blue-Gray */
    --background-color: #0F172A; /* Almost Black */
    --text-color: #E2E8F0; /* Light Gray */
    --text-muted-color: #94A3B8; /* Muted Gray */
    --border-color: #334155;
}

/* Light theme variables */
body[data-theme="light"] {
    --primary-color: #F97316;
    --secondary-color: #F1F5F9;
    --background-color: #FFFFFF;
    --text-color: #1E293B;
    --text-muted-color: #64748B;
    --border-color: #E2E8F0;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header & Nav */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

body[data-theme="light"] .main-header {
    background: rgba(255, 255, 255, 0.9);
}

.main-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    order: 2;
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

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

.icon-btn .sun-icon,
.icon-btn .moon-icon {
    position: absolute;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

body[data-theme="dark"] .icon-btn .sun-icon {
    opacity: 0;
    transform: rotate(-90deg);
}

body[data-theme="dark"] .icon-btn .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

body[data-theme="light"] .icon-btn .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
}

body[data-theme="light"] .icon-btn .moon-icon {
    opacity: 0;
    transform: rotate(90deg);
}

.lang-text {
    font-weight: 700;
    font-size: 0.9rem;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    order: 1;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
    display: block;
}

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

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}
.mobile-menu-toggle .hamburger-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Floating Widgets */
.floating-widgets {
    position: fixed;
    bottom: 110px;
    right: 20px;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#sound-toggle .speaker-on-icon,
#sound-toggle .speaker-off-icon {
    position: absolute;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

body[data-sound="on"] #sound-toggle .speaker-on-icon { opacity: 1; transform: scale(1); }
body[data-sound="on"] #sound-toggle .speaker-off-icon { opacity: 0; transform: scale(0); }
body[data-sound="off"] #sound-toggle .speaker-on-icon { opacity: 0; transform: scale(0); }
body[data-sound="off"] #sound-toggle .speaker-off-icon { opacity: 1; transform: scale(1); }

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: left;
    background: url('hero-background.png') no-repeat center center/cover;
    position: relative;
    padding: 6rem 1rem 2rem;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.7);
}

body[data-theme="light"] .hero-section::after {
    background: rgba(255, 255, 255, 0.7);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: calc(100vh - 8rem);
}

.hero-text-container {
    max-width: 650px;
}

.hero-content h1 {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: clamp(2.8rem, 6vw, 5rem);
    margin-bottom: 1rem;
    color: white;
    line-height: 1.1;
}

body[data-theme="light"] .hero-content h1 {
    color: var(--text-color);
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero-content p {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    margin-bottom: 2.5rem;
    color: var(--text-muted-color);
}

body[data-theme="light"] .hero-content p {
    color: var(--text-color);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(30, 41, 59, 0.5);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

body[data-theme="light"] .feature-item {
    background: rgba(255, 255, 255, 0.8);
}

.feature-item:hover {
    background: rgba(30, 41, 59, 0.8);
    transform: translateY(-5px);
}

body[data-theme="light"] .feature-item:hover {
    background: rgba(255, 255, 255, 0.95);
}

.feature-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
}

.feature-text h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

body[data-theme="light"] .feature-text h4 {
    color: var(--text-color);
}

.feature-text span {
    color: var(--text-muted-color);
    font-weight: 400;
    line-height: 1.4;
}

.cta-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.cta-button:hover {
    background-color: #FB923C;
    transform: translateY(-3px);
}

.cta-button-secondary {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}
.cta-button-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

.cta-button:disabled {
    background-color: #475569;
    color: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

.cta-button:disabled:hover {
    background-color: #475569;
}

/* About Section */
.about-section {
    padding-top: 6rem;
    padding-bottom: 2rem;
}
.about-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}
.about-header h2 {
    margin-bottom: 0;
    text-align: left;
}
.about-container {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    max-height: 1000px;
    transition: max-height 0.7s ease-in-out, opacity 0.5s ease-in-out, padding 0.7s ease-in-out;
}
.about-container.collapsed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-width: 0;
}
.about-tabs {
    display: flex;
    background-color: var(--background-color);
    padding: 0.5rem;
    gap: 0.5rem;
    border-radius: 8px 8px 0 0;
}
.tab-btn {
    flex: 1;
    padding: 0.8rem 1rem;
    border: none;
    background-color: transparent;
    color: var(--text-muted-color);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s, color 0.3s;
}
.tab-btn:hover {
    background-color: #334155;
    color: var(--text-color);
}

body[data-theme="light"] .tab-btn:hover {
    background-color: var(--border-color);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: white;
}
.tab-content-wrapper {
    position: relative;
    padding: 2.5rem;
}
.tab-content {
    display: none;
    animation: fadeInContent 0.6s ease;
}
.tab-content.active {
    display: block;
}
.tab-content h3 {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: white;
}

body[data-theme="light"] .tab-content h3 {
    color: var(--text-color);
}

.tab-content p {
    color: var(--text-muted-color);
    max-width: 800px;
}
@keyframes fadeInContent {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.car-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.car-type-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.8rem;
    padding: 1.5rem;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.car-type-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}
.car-type-item img {
    width: 50px;
    height: 50px;
}
.car-type-item span {
    color: var(--text-color);
    font-weight: 500;
}

/* Process Timeline Section */
.process-section {
    padding-top: 4rem;
}

.process-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}
.process-header h2 {
    margin-bottom: 0;
    text-align: left;
}

.toggle-btn {
    background: var(--secondary-color);
    color: var(--text-muted-color);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.3s, color 0.3s;
}

.toggle-btn:hover {
    background: #334155;
    color: var(--text-color);
}

body[data-theme="light"] .toggle-btn:hover {
    background: var(--border-color);
}

.toggle-btn .chevron-icon {
    transition: transform 0.4s ease;
}
.toggle-btn[aria-expanded="false"] .chevron-icon {
    transform: rotate(-180deg);
}


.process-timeline-container {
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.7s ease-in-out, opacity 0.5s ease-in-out;
}
.process-timeline-container.collapsed {
    max-height: 0;
    opacity: 0;
}

.timeline {
    position: relative;
    padding: 2rem 0;
    margin-left: 2rem;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 48px;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--border-color);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-bottom: 3rem;
}

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

.timeline-icon {
    position: relative;
    z-index: 2;
    background: var(--background-color);
    padding: 1rem;
    border-radius: 50%;
    border: 3px solid var(--border-color);
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.timeline-icon img {
    width: 60px;
    height: 60px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 38px;
    top: 40px;
    width: 25px;
    height: 25px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 4px solid var(--background-color);
    z-index: 1;
}

.timeline-content {
    background-color: var(--secondary-color);
    padding: 1.5rem 2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    width: 100%;
}

.timeline-content h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

body[data-theme="light"] .timeline-content h3 {
    color: var(--text-color);
}

.timeline-content p {
    color: var(--text-muted-color);
}

/* Content Sections */
.content-section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 6rem 1rem;
}

.content-section h2 {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

body[data-theme="light"] .content-section h2 {
    color: var(--text-color);
}

/* Calculator Section */
.calculator-container {
    display: flex;
    gap: 2rem;
    background-color: var(--secondary-color);
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.calculator-form {
    flex: 2;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.calculator-result {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--background-color);
    border-radius: 8px;
    padding: 2rem;
    min-width: 250px;
}

.calculator-result p {
    font-size: 1.2rem;
    color: var(--text-muted-color);
}

#price-output {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 0.5rem;
    transition: transform 0.3s ease;
}

.price-updated {
    transform: scale(1.1);
}

/* Form Styles */
.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted-color);
}

.form-group input, .form-group select, .form-group textarea {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.8rem;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.3);
}

.form-group.hidden {
    display: none;
}

/* Gallery Section */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    perspective: 1000px;
}

.gallery-item {
    cursor: pointer;
    overflow: hidden;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), border-color 0.3s;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-item:hover {
    border-color: var(--primary-color);
}
.gallery-item:hover img {
    transform: scale(1.1);
}

/* Reviews Section */
.reviews-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.review-card {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.review-author h4 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.review-stars {
    color: #FFC107; /* A nice yellow for stars */
}

.google-icon {
    width: 24px;
    height: 24px;
}

.review-text {
    color: var(--text-muted-color);
    font-style: italic;
}

/* Contact Section */
.contact-section form {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--secondary-color);
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

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

.contact-section form button {
    width: 100%;
}

.vehicle-summary {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 5px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
}

.vehicle-summary h4 {
    margin-bottom: 0.5rem;
}

.vehicle-summary p {
    color: var(--text-muted-color);
}

.vehicle-summary strong p {
    color: var(--text-color);
    margin-top: 1rem;
}

/* Footer */
.main-footer {
    padding: 4rem 1rem 2rem;
    background-color: #0B1120;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted-color);
}

body[data-theme="light"] .main-footer {
    background-color: #F8FAFC;
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-column h4 {
    font-family: 'Roboto Condensed', sans-serif;
    color: var(--text-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-column p {
    margin-bottom: 0.5rem;
}

.footer-logo {
    height: 35px;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.footer-column.about p {
    line-height: 1.7;
}

.social-media a {
    display: block;
    color: var(--text-muted-color);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.lightbox-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 900px;
    animation-name: zoom;
    animation-duration: 0.6s;
}

.lightbox-nav {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -50px;
    color: white;
    font-weight: bold;
    font-size: 30px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
    -webkit-user-select: none;
    background-color: rgba(0,0,0,0.3);
}

.lightbox-nav.next {
    right: 0;
    border-radius: 3px 0 0 3px;
}
.lightbox-nav.prev {
    left: 0;
}

.lightbox-nav:hover {
    background-color: rgba(0,0,0,0.8);
}

@keyframes zoom {
    from {transform: scale(0)}
    to {transform: scale(1)}
}

.close-lightbox {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close-lightbox:hover,
.close-lightbox:focus {
    color: #bbb;
    text-decoration: none;
}

/* Sticky Promotional Banner */
#sticky-promo-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 1rem;
    border-top: 1px solid #e2e8f0;
    transition: background-color 0.3s ease;
}

body[data-theme="dark"] #sticky-promo-banner {
    background: rgba(30, 41, 59, 0.9);
    border-top-color: var(--border-color);
}

.sticky-promo-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    text-align: center;
}

.sticky-promo-logo {
    height: 35px;
    display: block;
    flex-shrink: 0;
}

.sticky-promo-content p {
    color: #334155;
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
}

body[data-theme="dark"] .sticky-promo-content p {
    color: var(--text-color);
}

.sticky-promo-content p strong {
    font-weight: 700;
    color: var(--primary-color);
}

.sticky-promo-buttons {
    display: flex;
    gap: 0.75rem;
    flex-shrink: 0;
    flex-wrap: wrap;
    justify-content: center;
}

.sticky-promo-btn {
    padding: 0.7rem 1.4rem;
    border-radius: 50px;
    border: 1px solid transparent;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.sticky-promo-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.sticky-promo-btn.quote-btn {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
.sticky-promo-btn.quote-btn:hover {
    background-color: #FB923C;
    border-color: #FB923C;
}


.sticky-promo-btn.chat-btn {
    background-color: #0EA5E9; /* Bright Blue */
    color: white;
    border-color: #0EA5E9;
}
.sticky-promo-btn.chat-btn:hover {
    background-color: #38BDF8;
    border-color: #38BDF8;
}

.sticky-promo-btn.tow-service-btn {
    background-color: transparent;
    color: var(--text-muted-color);
    border: 1px solid var(--border-color);
}

.sticky-promo-btn.tow-service-btn:hover {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border-color: var(--primary-color);
}


.sticky-promo-btn svg {
    stroke-width: 2.5;
}

/* Chatbot Modal */
.chatbot-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(5px);
    z-index: 1999;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.chatbot-modal.visible {
    opacity: 1;
    visibility: visible;
}

.chatbot-container {
    background: var(--secondary-color);
    width: 100%;
    max-width: 400px;
    height: 70vh;
    max-height: 600px;
    margin: 1rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(50px);
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.chatbot-modal.visible .chatbot-container {
    transform: translateY(0);
}

.chatbot-header {
    background: #0B1120;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

body[data-theme="light"] .chatbot-header {
    background: var(--background-color);
}

.chatbot-header h3 {
    color: white;
    font-size: 1.1rem;
}

body[data-theme="light"] .chatbot-header h3 {
    color: var(--text-color);
}

#close-chatbot-btn {
    background: none;
    border: none;
    color: var(--text-muted-color);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}
#close-chatbot-btn:hover {
    color: white;
}

body[data-theme="light"] #close-chatbot-btn:hover {
    color: var(--text-color);
}

.chatbot-body {
    flex-grow: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chat-message {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: 18px;
    line-height: 1.4;
    opacity: 0;
    animation: fadeIn 0.5s forwards;
}

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

.bot-message {
    background: #334155;
    color: var(--text-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

body[data-theme="light"] .bot-message {
    background: var(--border-color);
}

.user-message {
    background: var(--primary-color);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

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

.chatbot-options button {
    width: 100%;
    background: var(--background-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 0.8rem;
    border-radius: 8px;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.chatbot-options button:hover {
    background: #334155;
    border-color: var(--primary-color);
}

body[data-theme="light"] .chatbot-options button:hover {
    background: var(--border-color);
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.hero-content .reveal:nth-child(1) { transition-delay: 0.2s; }
.hero-content .reveal:nth-child(2) { transition-delay: 0.4s; }
.hero-content .reveal:nth-child(3) { transition-delay: 0.6s; }
.hero-content .reveal:nth-child(4) { transition-delay: 0.8s; }

/* Responsive */
@media (max-width: 900px) {
    .header-controls {
        order: 0;
        position: relative;
        z-index: 1002;
    }
    
    .main-nav ul {
        position: fixed;
        top: 0;
        right: 0;
        width: 300px;
        height: 100vh;
        background: var(--secondary-color);
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        gap: 0.5rem;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        border-left: 1px solid var(--border-color);
    }
    .main-nav ul.menu-open {
        transform: translateX(0);
    }
    .main-nav a {
        font-size: 1.2rem;
        padding: 0.8rem 1rem;
        border-radius: 5px;
    }
    .main-nav a:hover {
        background-color: rgba(249, 115, 22, 0.1);
    }
    .mobile-menu-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .calculator-container {
        flex-direction: column;
    }
    .main-nav {
        flex-direction: row;
    }
    .sticky-promo-content {
        gap: 1rem;
    }
    .sticky-promo-logo {
        display: none;
    }
}

@media (max-width: 480px) {
    .chatbot-container {
        margin: 0;
        max-width: 100%;
        height: 100vh;
        max-height: 100%;
        border-radius: 0;
    }
}

/* Hide the standalone promo banner */
.promo-banner {
    display: none;
}