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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
    color: #333;
    scroll-behavior: smooth;
}

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

section {
    padding: 80px 0;
}

/* Header & Navigation */
header {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('images/Κατασκευή_ Ιστοσελίδων_ Θεσσαλονίκη.webp') no-repeat center center/cover;
    color: #fff;
    text-align: center;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

nav .logo a {
    display: block;
}

nav .logo img {
    height: 80px;
    width: auto;
}

/* Στυλ για το hamburger menu toggle */
.hamburger-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: #fff;
    border-radius: 10px;
    transition: all 0.3s ease-in-out;
}

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

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #e74c3c;
}

.hero-section {
    max-width: 800px;
}

.hero-section h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
}

.hero-section p {
    font-size: 1.2em;
    margin-bottom: 30px;
}

.cta-button {
    background-color: #e74c3c;
    color: #fff;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #c0392b;
}

/* Sections Styling */
h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 50px;
    color: #2c3e50;
}

/* About Us Section */
#about-us {
    background-color: #fff;
}

.about-us-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.about-us-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.about-us-content h2 {
    text-align: left;
    margin-bottom: 20px;
}

/* Services */
#services {
    background-color: #eef1f6;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateY(-10px);
}

.service-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.service-item h3 {
    color: #e74c3c;
    margin-bottom: 15px;
    text-align: center;
}

.service-item p {
    text-align: justify;
}

/* FAQ Section */
#faq {
    background-color: #fff;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: #f9f9f9;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 5px solid #27ae60;
    border-radius: 4px;
}

.faq-item h3 {
    color: #333;
    margin-bottom: 10px;
}

/* Testimonials Section */
#testimonials {
    background-color: #ececec;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    font-style: italic;
}

.testimonial-item p.client-name {
    margin-top: 15px;
    font-weight: bold;
    font-style: normal;
    color: #e74c3c;
}

/* Case Studies Section - Slider */
#case-studies {
    background-color: #fff;
}

.slider-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    padding: 0 50px;
}

.case-study-slider {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.case-study-slide {
    min-width: 100%;
    box-sizing: border-box;
    display: none;
}

.case-study-slide.active {
    display: block;
}

.case-study-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.case-study-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.case-study-info h3 {
    color: #e74c3c;
    margin-bottom: 15px;
}

.case-study-info p {
    margin-bottom: 10px;
}

.slider-container button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    padding: 15px;
    cursor: pointer;
    z-index: 10;
    border-radius: 50%;
    font-size: 1.5em;
}

.slider-container .prev-button {
    left: 10px;
}

.slider-container .next-button {
    right: 10px;
}

.dots-container {
    text-align: center;
    margin-top: 20px;
}

.dot {
    height: 15px;
    width: 15px;
    margin: 0 5px;
    background-color: #bbb;
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.6s ease;
    cursor: pointer;
}

.dot.active {
    background-color: #717171;
}

/* Portfolio */
#portfolio {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('images/seo_optimization_thessaloniki.webp') no-repeat center center/cover;
    color: #fff;
}

#portfolio h2 {
    color: #fff;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.portfolio-item {
    background-color: #fff;
    border-radius: 8-x;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.portfolio-item:hover {
    transform: scale(1.05);
}

.portfolio-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.portfolio-item h3 {
    margin: 15px;
    color: #333;
}

.portfolio-item p {
    margin: 0 15px 15px;
    color: #555;
}

.portfolio-item a {
    display: block;
    text-align: center;
    background-color: #27ae60;
    color: #fff;
    padding: 10px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.portfolio-item a:hover {
    background-color: #2ecc71;
}

/* Contact */
#contact {
    background-color: #fff;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info ul {
    list-style: none;
    padding: 0;
}

.contact-info li {
    margin-bottom: 25px;
    display: flex;
    align-items: flex-start;
}

.contact-info li i {
    margin-right: 15px;
    color: #e74c3c;
    font-size: 1.2em;
    flex-shrink: 0;
}

.contact-info li strong {
    font-weight: bold;
    display: inline-block;
    min-width: 90px;
	margin-right: 15px;
}

/* Φόρμα Επικοινωνίας */
.contact-form label {
    display: block;
    margin-bottom: 5px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-family: inherit;
}

.contact-form button {
    background-color: #e74c3c;
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: #c0392b;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px;
}

/* Mobile responsive */
@media (max-width: 768px) {
    nav {
        flex-direction: row;
        justify-content: space-between;
    }

    .hamburger-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.9);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        padding-top: 10px;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu li {
        margin: 10px 0;
    }

    .nav-menu a {
        font-size: 1.2em;
    }

    .hero-section {
        padding-top: 100px;
    }

    .hero-section h1 {
        font-size: 2em;
    }
    
    .hero-section p {
        font-size: 1em;
    }

    .service-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .about-us-container, .contact-container {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }

    .about-us-image {
        order: -1;
    }

    .contact-info li {
        margin-bottom: 20px;
    }

    .contact-info li strong {
        min-width: 80px;
    }

    .case-study-item {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .case-study-item:nth-child(even) .case-study-image {
        order: unset;
    }

    .slider-container button {
        display: none;
    }
}