/* Βασικά στυλ */
:root {
    --primary-color: #1e3c72;
    --secondary-color: #2a5298;
    --accent-color: #4a6fa5;
    --light-color: #f8f9fa;
    --dark-color: #2c3e50;
    --text-color: #333333;
    --gray-light: #eef2f7;
    --gray-medium: #b0b8c5;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --border-radius: 8px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --box-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
    --font-heading: 'Poppins', 'Noto Sans', sans-serif;
    --font-body: 'Noto Sans', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-color);
    background-color: white;
    overflow-x: hidden;
}

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

/* Header & Navigation */
.main-header {
    background-color: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 2.2rem;
    margin-right: 12px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1rem;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 1rem;
}

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

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

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(30, 60, 114, 0.85), rgba(30, 60, 114, 0.9)), 
                url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    padding: 180px 0 120px;
    position: relative;
    margin-top: 80px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 25px;
    opacity: 0.9;
    font-weight: 500;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    line-height: 1.7;
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(to top, white, transparent);
}

/* Section Common Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 30px;
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.divider-line {
    width: 80px;
    height: 2px;
    background-color: var(--accent-color);
}

.divider-icon {
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* About Section */
.about-section {
    padding: 100px 0;
    background-color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image .image-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    position: relative;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.about-image img:hover {
    transform: scale(1.03);
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 15px;
    text-align: center;
    font-weight: 500;
}

.about-text h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 30px;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background-color: var(--gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--dark-color);
}

/* Services Section */
.services-section {
    padding: 100px 0;
    background-color: var(--gray-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 40px 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.service-icon {
    width: 80px;
    height: 80px;
    background-color: var(--gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: var(--primary-color);
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-description {
    color: var(--text-color);
    line-height: 1.6;
}

/* Values Section */
.values-section {
    padding: 100px 0;
    background-color: white;
}

.values-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.value-card {
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    position: relative;
    transition: var(--transition);
}

.value-card:hover {
    background-color: white;
    box-shadow: var(--box-shadow);
}

.value-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 700;
    color: rgba(42, 82, 152, 0.1);
    font-family: var(--font-heading);
}

.value-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.value-description {
    color: var(--text-color);
    line-height: 1.6;
}

.values-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    position: relative;
    margin-top: 40px;
}

.values-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 1.2rem;
    font-weight: 500;
}

.image-caption i {
    font-size: 1.5rem;
}

/* Details Section */
.details-section {
    padding: 100px 0;
    background-color: var(--gray-light);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.detail-box {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 40px 30px;
    box-shadow: var(--box-shadow);
    display: flex;
    gap: 25px;
}

.detail-icon {
    width: 70px;
    height: 70px;
    background-color: var(--gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.detail-content h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.detail-list {
    list-style: none;
}

.detail-list li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.detail-list li:last-child {
    border-bottom: none;
}

.detail-list strong {
    color: var(--primary-color);
    margin-right: 10px;
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background-color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3,
.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: var(--gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-text p {
    color: var(--text-color);
}

.map-placeholder {
    background-color: var(--gray-light);
    border-radius: var(--border-radius);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 40px;
}

.map-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    color: var(--accent-color);
    font-size: 1.2rem;
}

.map-content i {
    font-size: 3rem;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 60, 114, 0.1);
}

/* Footer */
.main-footer {
    background-color: var(--dark-color);
    color: white;
    padding: 80px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    gap: 20px;
    max-width: 300px;
}

.footer-logo-icon {
    font-size: 2.5rem;
    color: white;
}

.footer-logo-text h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.footer-logo-text p {
    opacity: 0.8;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: white;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 15px;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-column ul li:hover {
    opacity: 1;
}

.footer-column ul li a {
    color: white;
    text-decoration: none;
}

.footer-column ul li i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: 20px;
}

.copyright p {
    opacity: 0.8;
    margin-bottom: 10px;
}

.footer-note {
    color: #ffcc00;
    font-weight: 500;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.2rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero-section {
        padding: 150px 0 80px;
        margin-top: 70px;
    }
    
    .hero-title {
        font-size: 2.3rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content,
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-logo {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .values-content {
        grid-template-columns: 1fr;
    }
    
    .detail-box {
        flex-direction: column;
        text-align: center;
    }
}