:root {
    --primary-blue: #007bff;
    /* Standard Blue */
    --light-blue: #e6f2ff;
    /* Very light blue for background/accents */
    --dark-blue: #0056b3;
    /* Darker blue for hover/active states */
    --white: #ffffff;
    --text-dark: #333333;
    --text-light-gray: #666666;
    --border-light: #dddddd;
    --shadow-light: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--light-blue);
    color: var(--text-dark);
    box-sizing: border-box;
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- Header & Navigation --- */
header {
    background: var(--primary-blue);
    color: var(--white);
    padding: 20px 15px;
    /* Added horizontal padding */
    width: 100%;
    text-align: center;
    box-shadow: 0 4px 8px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 999;
    box-sizing: border-box;
    transition: padding 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    /* Smoother transition */
}

header.scrolled {
    padding: 10px 15px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 5px;
    color: var(--white);
    transition: font-size 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), margin-bottom 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    white-space: nowrap;
    /* Prevent title from wrapping */
    min-width: fit-content;
    /* Ensure it takes minimal width */
    /* Default margins for h1, adjusted by .scrolled */
    margin-top: 0;
    margin-bottom: 5px;
    margin-left: 0;
    margin-right: 0;
}

header.scrolled h1 {
    font-size: 1.6em;
    /* Slightly smaller font size for title when scrolled */
    margin-bottom: 0;
    margin-top: 0;
    padding: 0 5px;
    /* Add slight horizontal padding to ensure system is visible */
    white-space: nowrap;
    /* Keep it on one line */
}

header p {
    font-size: 1.1em;
    margin-top: 0;
    color: var(--white);
    transition: opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), margin-top 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

header.scrolled p {
    opacity: 0;
    height: 0;
    margin-top: -10px;
    visibility: hidden;
}

nav {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    transition: opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), margin-top 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

header.scrolled nav {
    opacity: 0;
    height: 0;
    margin-top: -10px;
    visibility: hidden;
}

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.0em;
    transition: color 0.3s ease, border-bottom 0.3s ease;
    padding-bottom: 5px;
    white-space: nowrap;
}

nav a:hover {
    color: var(--light-blue);
    border-bottom: 2px solid var(--light-blue);
}

/* --- Sections --- */
section {
    padding: 60px 20px;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
}

section h2 {
    font-size: 2.2em;
    margin-bottom: 30px;
    color: var(--primary-blue);
}

section p {
    font-size: 1.05em;
    max-width: 800px;
    margin: 0 auto 40px;
    color: var(--text-dark);
}

/* --- Buttons --- */
.btn {
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    margin: 15px 10px;
    font-size: 1.0em;
    font-weight: 500;
    transition: background 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 5px var(--shadow-light);
    text-align: center;
}

.btn:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* --- Product Cards --- */
.products-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
    margin-top: 30px;
}

.product {
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 20px;
    width: 300px;
    background: var(--white);
    color: var(--text-dark);
    text-align: left;
    box-shadow: 0 5px 15px var(--shadow-light);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-sizing: border-box;
}

.product:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.product img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 15px;
    border: 1px solid var(--border-light);
}

.product h3 {
    font-size: 1.5em;
    margin-top: 10px;
    margin-bottom: 10px;
    color: var(--primary-blue);
}

.product p {
    font-size: 0.9em;
    margin-bottom: 15px;
    color: var(--text-light-gray);
    text-align: left;
    flex-grow: 1;
}

.product .btn {
    width: 100%;
    margin: 0 auto;
    display: block;
    padding: 12px 0;
}

/* --- Segment Headings (For Product Categories) --- */
.segment {
    font-size: 2.2em;
    margin-top: 60px;
    margin-bottom: 30px;
    color: var(--primary-blue);
    width: 100%;
    text-align: center;
    position: relative;
}

.segment::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background: var(--primary-blue);
    left: 50%;
    transform: translateX(-50%);
    bottom: -10px;
    border-radius: 2px;
}

/* --- Testimonials Section --- */
#testimonials {
    background: var(--white);
    padding: 80px 20px;
    margin-top: 40px;
    box-shadow: 0 -4px 8px var(--shadow-light);
}

.testimonial-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.testimonial-card {
    background: var(--light-blue);
    padding: 25px;
    border-radius: 10px;
    max-width: 350px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    text-align: left;
    transition: transform 0.3s ease;
}

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

.testimonial-card p {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-size: 1em;
    line-height: 1.5;
}

.testimonial-card .author {
    font-weight: 700;
    color: var(--primary-blue);
    font-size: 1.1em;
}

.testimonial-card .rating {
    color: #FFD700;
    /* Gold color for stars */
    font-size: 1.2em;
    margin-bottom: 10px;
}

/* --- Features Section --- */
#features {
    background: var(--light-blue);
    padding: 80px 20px;
    margin-top: 40px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
    text-align: center;
}

.feature-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item i {
    font-size: 3em;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 1.5em;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 0.95em;
    color: var(--text-dark);
    margin-bottom: 0;
}

/* --- Service Request & AMC for Organization Sections --- */
.request-form-container,
.amc-content {
    /* Changed from anm-content to amc-content */
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    margin: 40px auto;
    text-align: left;
}

.request-form-container form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.request-form-container label {
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 5px;
    display: block;
}

.request-form-container input[type="text"],
.request-form-container input[type="email"],
.request-form-container input[type="tel"],
.request-form-container textarea {
    width: calc(100% - 20px);
    /* Adjust for padding */
    padding: 10px;
    border: 1px solid var(--border-light);
    border-radius: 5px;
    font-family: 'Roboto', sans-serif;
    font-size: 1em;
    box-sizing: border-box;
    /* Include padding in width */
}

.request-form-container textarea {
    resize: vertical;
    /* Allow vertical resizing */
    min-height: 100px;
}

.request-form-container .submit-btn {
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: 500;
    transition: background 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 5px var(--shadow-light);
    width: fit-content;
    /* Only take content width */
    margin-top: 20px;
    align-self: center;
    /* Center the button in flex container */
}

.request-form-container .submit-btn:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.amc-content ul {
    /* Changed from anm-content to amc-content */
    list-style: none;
    /* Remove default bullet points */
    padding: 0;
    text-align: left;
    margin-top: 20px;
}

.amc-content ul li {
    /* Changed from anm-content to amc-content */
    background: var(--light-blue);
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 8px;
    font-size: 1em;
    color: var(--text-dark);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
}

.amc-content ul li i {
    /* Changed from anm-content to amc-content */
    color: var(--primary-blue);
    font-size: 1.5em;
    margin-right: 15px;
}

/* --- Footer --- */
footer {
    background: var(--primary-blue);
    color: var(--white);
    padding: 20px;
    width: 100%;
    text-align: center;
    margin-top: 60px;
    box-shadow: 0 -4px 8px var(--shadow-light);
    box-sizing: border-box;
}

footer p {
    margin: 0;
    font-size: 0.9em;
}

/* --- Popup Styles (Standard & Clean) --- */
#popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

#popup.active {
    opacity: 1;
    visibility: visible;
}

#popup .popup-content {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    max-width: 350px;
    width: 90%;
    position: relative;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(20px);
    transition: transform 0.3s ease, opacity 0.3s ease;
    border: 1px solid var(--primary-blue);
    box-sizing: border-box;
}

#popup.active .popup-content {
    transform: translateY(0);
    opacity: 1;
}

#popup img {
    width: 100%;
    height: auto;
    max-width: 300px;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
}

#popup h3 {
    color: var(--primary-blue);
    font-size: 1.6em;
    margin-bottom: 10px;
}

#popup p {
    color: var(--text-dark);
    font-size: 1.0em;
    margin-bottom: 20px;
}

#popup .btn {
    width: auto;
    margin-top: 0;
    margin-bottom: 15px;
    padding: 12px 25px;
    display: inline-block;
}

#popup button.close-btn {
    background: #cccccc;
    color: var(--text-dark);
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background 0.3s ease;
}

#popup button.close-btn:hover {
    background: #aaaaaa;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    header p {
        font-size: 0.9em;
    }

    nav {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    nav a {
        margin: 0;
        font-size: 0.95em;
        width: fit-content;
        padding: 5px 10px;
        border-radius: 5px;
        background: rgba(255, 255, 255, 0.1);
    }

    nav a:hover {
        background: rgba(255, 255, 255, 0.2);
    }

    nav a::after {
        content: none;
    }

    section {
        padding: 30px 15px;
    }

    section h2 {
        font-size: 1.8em;
    }

    section p {
        font-size: 0.95em;
    }

    .product {
        width: 90%;
        max-width: 320px;
        margin: 15px auto;
    }

    .segment {
        font-size: 1.8em;
        margin-top: 40px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.95em;
    }

    #popup .popup-content {
        width: 90%;
        max-width: 300px;
        padding: 20px;
    }

    #popup h3 {
        font-size: 1.4em;
    }

    #popup p {
        font-size: 0.95em;
    }

    /* --- Scroll to Top Button adjustment for mobile --- */
    #scrollToTopBtn {
        bottom: 80px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 1.2em;
        line-height: 40px;
    }

    /* Testimonials and Features responsive adjustments */
    .testimonial-card,
    .feature-item {
        max-width: 100%;
        width: auto;
    }

    /* Service Request & AMC for Organization Sections responsive adjustments */
    .request-form-container,
    .amc-content {
        /* Changed from anm-content to amc-content */
        padding: 25px 15px;
    }

    .request-form-container input[type="text"],
    .request-form-container input[type="email"],
    .request-form-container input[type="tel"],
    .request-form-container textarea {
        width: 100%;
        /* Full width on mobile */
    }
}

.gpu-carousel-wrapper {
    position: relative;
    max-width: 1200px;
    margin: 30px auto;
    overflow: hidden;
    padding: 0 40px;
}

.gpu-carousel {
    display: flex;
    overflow-x: auto;
    scroll-behavior: smooth;
    gap: 20px;
    padding: 20px 0;
}


.gpu-carousel::-webkit-scrollbar {
    display: none;
}

.gpu-card {
    flex: 0 0 auto;
    text-align: center;
    width: 250px;
}

.gpu-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid var(--border-light);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.gpu-series-name {
    margin-top: 10px;
    font-weight: bold;
    color: var(--primary-blue);
    font-size: 1em;
}

.gpu-scroll-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-blue);
    color: white;
    border: none;
    font-size: 1.2em;
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
    transition: background 0.3s ease;
}

.gpu-scroll-btn:hover {
    background: var(--dark-blue);
}

.gpu-scroll-btn.left {
    left: 10px;
}

.gpu-scroll-btn.right {
    right: 10px;
}

@media (max-width: 768px) {
    .gpu-card {
        width: 200px;
    }

    .gpu-card img {
        height: 120px;
    }

    .gpu-scroll-btn {
        display: none;
    }
}

@media (max-width: 480px) {
    header {
        padding: 15px 10px;
    }

    header h1 {
        font-size: 1.8em;
    }

    /* Adjusted font size for scrolled header title on very small screens to ensure "System" visibility */
    header.scrolled h1 {
        font-size: 1.3em;
        /* Further slightly smaller to fit "Voxora System" */
        letter-spacing: -0.5px;
        /* Optional: adjust letter spacing if still too wide */
        min-width: unset;
        /* Allow it to shrink if necessary */
    }

    section h2 {
        font-size: 1.6em;
    }

    .product {
        padding: 15px;
    }

    .product h3 {
        font-size: 1.3em;
    }

    .product p {
        font-size: 0.85em;
    }

    #scrollToTopBtn {
        bottom: 70px;
        right: 10px;
        width: 38px;
        height: 38px;
        font-size: 1.1em;
        line-height: 38px;
    }
}

/* --- Simple Animations for a clean look --- */
section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.product {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.product.animated {
    opacity: 1;
    transform: translateY(0);
}


#service-cards {
    padding: 60px 20px;
    text-align: center;
    background: #f8f9ff;
    margin-top: 40px;
}

#service-cards h2 {
    font-size: 2.2em;
    margin-bottom: 20px;
    color: var(--primary-blue);
}

#service-cards .product ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

#service-cards .product ul li {
    margin-bottom: 8px;
    color: var(--text-dark);
}

.blue-card {
    border-left: 5px solid #3399ff;
}

.silver-card {
    border-left: 5px solid #cccccc;
}

.gold-card {
    border-left: 5px solid #ffcc00;
}

.qr-code {
    width: 100%;
    margin-top: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.price {
    font-weight: bold;
    color: #333;
    margin: 10px 0;
}