/* Base Styles & Variables */
:root {
    --primary: #1a5fb4;
    --secondary: #e67e22;
    --accent: #27ae60;
    --dark: #2c3e50;
    --light: #ecf0f1;
    --gray: #7f8c8d;
    --transition: all 0.3s ease;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

h1, h2, h3, h4 {
    color: var(--dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 {
    font-size: 3rem;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--secondary);
}

h3 {
    font-size: 1.8rem;
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    font-size: 1rem;
}

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

.btn-secondary {
    background-color: var(--accent);
}

.btn-full {
    width: 100%;
}

.highlight {
    color: var(--primary);
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto 50px;
}

/* Header & Navigation */
header {
    background-color: white;
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display：flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    max-width: 36px;
}

    .logo img {
        height: 36px !important;
        width: auto !important;
        position: relative;
        top: 8px;
    }

.logo span {
    color: var(--primary);
}

.logo span span {
    color: var(--secondary);
}

.tagline {
    font-size: 0.9rem;
    color: var(--gray);
    margin-top: 5px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

nav ul li a:hover {
    color: var(--primary);
}

nav ul li a.active {
    color: var(--primary);
}

nav ul li a.active:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('https://images.unsplash.com/photo-1485827404703-89b55fcc595e?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 180px 0 120px;
    margin-top: 70px;
}

.hero h1 {
    color: white;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.services-tag {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 30px;
}

.service-tag {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 600;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.about-card {
    background-color: white;
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.about-card:hover {
    transform: translateY(-10px);
}

.about-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

/* Robots Section */
.robots-section {
    background-color: var(--light);
}

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

.robot-card {
    background-color: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.robot-card:hover {
    transform: translateY(-10px);
}

.robot-image {
    height: 200px;
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items:flex-end;
}

.robot-image img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;

    transition: var(--transition);
}

.robot-card:hover .robot-image img {
    transform: scale(1.05);
}

.robot-info {
    padding: 25px;
}

.robot-info h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.feature-list {
    list-style: none;
    margin-top: 10px;
}

.feature-list li {
    padding: 5px 0;
    display: flex;
    align-items: center;
}

.feature-list li i {
    color: var(--accent);
    margin-right: 8px;
}

/* Models Section - 5 arms in one line */
.models-section {
    background-color: white;
}

.models-grid {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 20px;
    overflow-x: auto;
    padding: 10px 0 30px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--light);
}

.models-grid::-webkit-scrollbar {
    height: 8px;
}

.models-grid::-webkit-scrollbar-track {
    background: var(--light);
    border-radius: 4px;
}

.models-grid::-webkit-scrollbar-thumb {
    background-color: var(--primary);
    border-radius: 4px;
}

.model-card {
    flex: 0 0 auto;
    width: 200px;
    background-color: var(--light);
    border-radius: var(--radius);
    padding: 25px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    min-height: 280px;
}

.model-card:hover {
    transform: translateY(-5px);
}

.model-card h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.model-weight {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 10px;
}

.model-tag {
    display: inline-block;
    padding: 5px 12px;
    background-color: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: 15px;
    font-weight: 600;
}

/* Applications Section */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.application-card {
    background-color: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.application-card:hover {
    transform: translateY(-10px);
}

.application-image {
    height: 200px;
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: flex-end;
}

.application-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.application-card:hover .application-image img {
    transform: scale(1.05);
}

.application-info {
    padding: 25px;
}

.application-info h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

/* Brands Section */
.brands-section {
    background-color: var(--light);
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.brand-card {
    background-color: white;
    border-radius: var(--radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.brand-card:hover {
    transform: translateY(-5px);
}

.brand-card h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.brand-tag {
    display: inline-block;
    padding: 5px 10px;
    background-color: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-top: 15px;
}

/* Partners Section */
.partners-section {
    background-color: white;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.partner-card {
    background-color: var(--light);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.partner-card:hover {
    transform: translateY(-5px);
}

.partner-card h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-right: 15px;
    width: 30px;
    margin-top: 5px;
}

.contact-form {
    background-color: white;
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
}

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

/* Footer */
footer {
    background-color: var(--dark);
    color: white;
    padding: 60px 0 30px;
}

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

.footer-column h3 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.footer-links li a {
    color: #ddd;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-links li i {
    margin-right: 8px;
    width: 20px;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* Admin Toggle Button */
.admin-toggle-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    z-index: 9998;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.admin-toggle-btn:hover {
    background-color: var(--secondary);
    transform: scale(1.1);
}

/* Responsive Styles */
@media (max-width: 1200px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    section { padding: 60px 0; }
    .model-card { width: 180px; padding: 20px 15px; min-height: 260px; }
    .model-weight { font-size: 2rem; }
    .model-card h3 { font-size: 1.3rem; }
}

@media (max-width: 992px) {
    .models-grid { flex-wrap: wrap; justify-content: center; overflow-x: visible; gap: 15px; }
    .model-card { width: calc(33.333% - 15px); min-width: 180px; margin-bottom: 15px; }
}

@media (max-width: 768px) {
    .header-container { flex-direction: column; align-items: flex-start; }
    .logo { margin-bottom: 15px; }
    nav { width: 100%; display: none; }
    nav.active { display: block; }
    nav ul { flex-direction: column; width: 100%; }
    nav ul li { margin: 0; width: 100%; }
    nav ul li a { display: block; padding: 10px 0; border-bottom: 1px solid #eee; }
    nav ul li:last-child a { border-bottom: none; }
    .mobile-menu-btn { display: block; position: absolute; top: 20px; right: 20px; }
    .hero { padding: 150px 0 80px; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; max-width: 300px; }
    .model-card { width: calc(50% - 15px); }
}

@media (max-width: 576px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.8rem; }
    .hero p { font-size: 1.1rem; }
    section { padding: 40px 0; }
    .services-tag { flex-direction: column; align-items: center; }
    .model-card { width: 100%; max-width: 300px; }
    .models-grid { gap: 15px; }
}