:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --accent-color: #28a745;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
    --text-color: #343a40;
    --light-text-color: #e9ecef;
    --border-color: #dee2e6;
    --font-family-primary: 'Poppins', sans-serif;
    --header-height: 80px;
}

/* --- Base Reset & Typography --- */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-primary);
    margin: 0;
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

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

h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.05);
}

h2 {
    font-size: 2.8rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
    color: var(--primary-color);
}

/* Underline decoration for section titles */
h2::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -10px;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

p {
    font-weight: 300;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

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

/* --- Buttons --- */
.btn-primary, .btn-signup {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid;
}

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

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
}

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

.btn-signup:hover {
    background-color: #218838;
    border-color: #218838;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(40, 167, 69, 0.3);
}

/* --- Navigation Bar --- */
.navbar {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    transition: box-shadow 0.3s ease-out;
}

.navbar.scrolled {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar .logo {
    width: 60px;
    height: auto;
}

.navbar .nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
    align-items: center;
}

.navbar .nav-links li a:not(.btn-signup) {
    color: var(--text-color);
    font-weight: 600;
    position: relative;
    padding-bottom: 5px;
    text-decoration: none;
}

.navbar .nav-links li a:not(.btn-signup).active,
.navbar .nav-links li a:not(.btn-signup):hover {
    color: var(--primary-color);
}

/* Navigation link underline animation */
.navbar .nav-links li a:not(.btn-signup)::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.navbar .nav-links li a:not(.btn-signup):hover::after,
.navbar .nav-links li a:not(.btn-signup).active::after {
    width: 100%;
}

.navbar .nav-links .btn-signup {
    margin-left: 1rem;
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
    text-decoration: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* --- Section Styling --- */
.section {
    min-height: calc(100vh - var(--header-height)); 
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* --- Hero Section --- */
.hero-section {
    background: linear-gradient(135deg, #e0f7fa, #bbdefb);
    flex-direction: row;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
    justify-content: center;
    padding-top: calc(var(--header-height) + 4rem);
}

.hero-content {
    max-width: 600px;
    text-align: left;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: var(--secondary-color);
}

.hero-image-wrapper {
    max-width: 500px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(255,255,255,0.8);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 1rem;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: 15px;
}

/* --- Services Section --- */
.services-section {
    background-color: white;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    width: 100%;
}

.service-card {
    background-color: #f0fcff;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.service-card img {
    width: 90px;
    height: auto;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

.service-card p {
    font-size: 1rem;
    color: var(--secondary-color);
}

/* --- About Section --- */
.about-section {
    background-color: #e6f7ff;
    padding: 5rem 1.5rem;
    max-width: 100%;
}

.about-section p {
    font-size: 1.25rem;
    max-width: 900px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    color: var(--secondary-color);
}

.about-section p strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* --- Contact Section --- */
.contact-section {
    background-color: var(--light-bg);
}

.contact-section h2 {
    text-align: left;
    margin-left: 0;
}

.contact-section h2::after {
    left: 0;
    transform: translateX(0%);
}

.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    align-items: flex-start;
    justify-content: center;
    text-align: left;
}

.contact-info {
    flex: 1;
    min-width: 320px;
    max-width: 500px;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 1.8rem;
    color: var(--secondary-color);
}

.contact-details p {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-color);
}

.contact-details strong {
    color: var(--primary-color);
}

.contact-details a {
    font-weight: 500;
}

.contact-map {
    flex: 1;
    min-width: 320px;
    height: 400px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* --- Footer --- */
.footer {
    background-color: var(--dark-bg);
    color: var(--light-text-color);
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: 0.9rem;
}

/* --- Scroll Reveal Animation --- */
.reveal-item {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-item.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Tablet (992px and below) */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    .hero-content p {
        font-size: 1.1rem;
    }
    .section h2 {
        font-size: 2.2rem;
    }
    .contact-section h2 {
        font-size: 2rem;
    }
}

/* Mobile (768px and below) */
@media (max-width: 768px) {
    .navbar-container {
        padding: 0 1rem;
    }

    /* Mobile Menu Display */
    .navbar .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 5px 10px rgba(0,0,0,0.05);
        padding: 1rem 0;
        z-index: 999;
        align-items: center;
    }

    .navbar .nav-links.active {
        display: flex;
    }

    .navbar .nav-links li {
        margin: 0.5rem 0;
    }

    .navbar .nav-links a {
        padding: 0.5rem 0;
        width: 100%;
        text-align: center;
    }

    .navbar .nav-links .btn-signup {
        padding: 0.8rem 1.8rem;
        margin-left: 0;
        margin-top: 1rem;
    }

    .menu-toggle {
        display: block;
    }

    /* Hero Section adjustments */
    .hero-section {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .hero-content {
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.2rem;
        margin-bottom: 1rem;
    }
    .hero-content p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .section {
        padding: 3rem 1rem;
        min-height: unset;
    }

    .section h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .service-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        width: 90%;
        margin: 0 auto;
    }

    .about-section p {
        font-size: 1rem;
    }

    /* Contact section adjustments */
    .contact-wrapper {
        flex-direction: column;
        text-align: center;
        gap: 2.5rem;
    }

    .contact-section h2 {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
    }

    .contact-section h2::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .contact-info {
        min-width: unset;
        max-width: 100%;
    }

    .contact-details {
        text-align: center;
    }

    .contact-map {
        height: 300px;
        min-width: unset;
        width: 90%;
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    .navbar .logo {
        width: 50px;
    }
    .hero-content h1 {
        font-size: 1.8rem;
    }
    .hero-content p {
        font-size: 0.9rem;
    }
    .btn-primary, .btn-signup {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
    .section h2 {
        font-size: 1.5rem;
    }
    .service-card h3 {
        font-size: 1.2rem;
    }
    .service-card p {
        font-size: 0.9rem;
    }
    .contact-section h2 {
        font-size: 1.8rem;
    }
    .contact-info p, .contact-details p {
        font-size: 0.9rem;
    }
    .contact-map {
        height: 250px;
    }
}