:root {
            --streamline-teal: #4ECDC4;
            --streamline-light-teal: #7ED4CD;
            --streamline-dark-teal: #3A9B95;
            --streamline-accent: #2E8B84;
            --streamline-bg: #f0fdfc;
            --streamline-white: #ffffff;
            --text-primary: #1a365d;
            --text-secondary: #4a5568;
            --text-light: #718096;
            --border-color: #b8f2f0;
            --shadow-teal: 0 4px 6px -1px rgba(78, 205, 196, 0.15), 0 2px 4px -1px rgba(78, 205, 196, 0.1);
            --shadow-teal-medium: 0 10px 15px -3px rgba(78, 205, 196, 0.25), 0 4px 6px -2px rgba(78, 205, 196, 0.15);
            --shadow-teal-large: 0 20px 25px -5px rgba(78, 205, 196, 0.3), 0 10px 10px -5px rgba(78, 205, 196, 0.2);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--streamline-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        /* Κεντρικό Logo στο Hero που μετατρέπεται σε fixed menu */
        .hero-logo-center {
            display: inline-block;
            position: relative;
            margin-bottom: 60px;
            transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        .logo-button-center {
            width: 280px;
            height: 280px;
            border: 5px solid var(--streamline-teal);
            border-radius: 50%;
            position: relative;
            background: var(--streamline-white);
            box-shadow: var(--shadow-teal-large);
            animation: logoFloatCenter 4s ease-in-out infinite;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 10px;
        }

        .logo-button-center:hover {
            transform: scale(1.05);
            box-shadow: 0 25px 50px rgba(78, 205, 196, 0.3), 0 0 0 10px rgba(78, 205, 196, 0.1);
        }

        .logo-image-center {
            width: 260px;
            height: 260px;
            object-fit: contain;
            border-radius: 50%;
            border: none;
            box-shadow: none;
            transition: all 0.3s ease;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        /* Menu text σαν button */
        .menu-text-center {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 12px;
            font-weight: 700;
            color: var(--streamline-white);
            background: var(--streamline-teal);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-family: 'Inter', sans-serif;
            text-align: center;
            z-index: 10;
            padding: 8px 16px;
            border-radius: 20px;
            border: 2px solid var(--streamline-white);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            cursor: pointer;
            animation: menuButtonGlow 3s ease-in-out infinite alternate;
        }

        .menu-text-center:hover {
            background: var(--streamline-white);
            color: var(--streamline-teal);
            transform: translateX(-50%) scale(1.1);
            box-shadow: 0 6px 16px rgba(78, 205, 196, 0.4);
        }

        @keyframes menuButtonGlow {
            0% { 
                box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), 0 0 0 0 rgba(255, 255, 255, 0.4);
            }
            100% { 
                box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3), 0 0 0 4px rgba(255, 255, 255, 0.6);
            }
        }

        /* Scrolled state - ΠΑΡΑΜΕΝΕΙ ΠΑΝΤΑ ΠΑΝΩ ΑΡΙΣΤΕΡΑ */
        .hero-logo-center.scrolled {
            position: fixed;
            top: 25px;
            left: 25px;
            margin-bottom: 0;
            z-index: 1001;
        }

        .hero-logo-center.scrolled .logo-button-center {
            width: 100px;
            height: 100px;
            padding: 5px;
        }

        .hero-logo-center.scrolled .logo-image-center {
            width: 90px;
            height: 90px;
        }

        .hero-logo-center.scrolled .menu-text-center {
            font-size: 6px;
            letter-spacing: 0.5px;
            bottom: 12px;
            padding: 4px 8px;
            border-radius: 10px;
            border-width: 1px;
        }

        /* Menu κυκλάκια - ΜΕΓΑΛΥΤΕΡΑ */
        .center-menu-items {
            position: absolute;
            top: -120px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 25px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            z-index: 1000;
        }

        .center-menu-items.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(-20px);
        }

        /* Όταν scrolled, τα menu ΚΑΘΕΤΑ κάτω από το logo */
        .hero-logo-center.scrolled .center-menu-items {
            top: 110px;
            left: 50%;
            transform: translateX(-50%);
            flex-direction: column;
            gap: 12px;
        }

        .hero-logo-center.scrolled .center-menu-items.show {
            transform: translateX(-50%) translateY(10px);
        }

        /* ΜΕΓΑΛΥΤΕΡΑ κυκλάκια */
        .center-menu-circle {
            width: 90px;
            height: 90px;
            border: 3px solid var(--streamline-white);
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            animation: floatMenuCircle 3s ease-in-out infinite;
        }

        .center-menu-circle:nth-child(2) {
            animation-delay: 0.5s;
        }

        .center-menu-circle:nth-child(3) {
            animation-delay: 1s;
        }

        .center-menu-circle:hover {
            transform: scale(1.1) translateY(-5px);
            background: var(--streamline-teal);
            color: white;
            box-shadow: 0 15px 40px rgba(78, 205, 196, 0.3);
        }

        .center-menu-icon {
            font-size: 28px;
            margin-bottom: 5px;
            color: var(--streamline-teal);
            transition: color 0.3s ease;
        }

        .center-menu-circle:hover .center-menu-icon {
            color: white;
        }

        .center-menu-text {
            font-size: 11px;
            font-weight: 600;
            color: var(--streamline-teal);
            text-align: center;
            line-height: 1.2;
            transition: color 0.3s ease;
        }

        .center-menu-circle:hover .center-menu-text {
            color: white;
        }

        /* Scrolled state - μεγαλύτερα και στο scrolled */
        .hero-logo-center.scrolled .center-menu-circle {
            width: 70px;
            height: 70px;
        }

        .hero-logo-center.scrolled .center-menu-icon {
            font-size: 22px;
        }

        .hero-logo-center.scrolled .center-menu-text {
            font-size: 9px;
        }

        @keyframes floatMenuCircle {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-8px); }
        }

        @keyframes logoFloatCenter {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
        }

        /* Floating Logo με Σπιτάκι - Εμφανίζεται μόνο στο scroll */
        .floating-logo {
            position: fixed;
            top: 25px;
            right: 25px;
            width: 60px;
            height: 60px;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .floating-logo.show {
            opacity: 1;
            visibility: visible;
        }

        .floating-logo-circle {
            width: 60px;
            height: 60px;
            border: 3px solid var(--streamline-teal);
            border-radius: 50%;
            background: var(--streamline-white);
            display: flex;
            align-items: center;
            justify-content: center;
            animation: floatingBob 2.5s ease-in-out infinite;
            cursor: pointer;
            box-shadow: var(--shadow-teal-medium);
            transition: all 0.3s ease;
        }

        .floating-logo-circle:hover {
            transform: scale(1.2);
            box-shadow: var(--shadow-teal-large);
        }

        .floating-house {
            color: var(--streamline-teal);
            font-size: 28px;
        }

        @keyframes floatingBob {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-8px); }
        }

        /* Hero Section with Animated Background */
        .hero {
            background: linear-gradient(135deg, var(--streamline-teal) 0%, var(--streamline-dark-teal) 50%, var(--streamline-accent) 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        /* Animated Background Shapes */
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 300"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,0.12)" stroke-width="2"/></pattern></defs><rect width="1000" height="300" fill="url(%23grid)"/></svg>');
            animation: float 25s ease-in-out infinite;
        }

        .floating-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
        }

        .shape {
            position: absolute;
            opacity: 0.35;
            animation: floatShape 15s ease-in-out infinite;
        }

        .shape.circle {
            width: 80px;
            height: 80px;
            border: 3px solid rgba(255, 255, 255, 0.6);
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
        }

        .shape.square {
            width: 60px;
            height: 60px;
            border: 3px solid rgba(255, 255, 255, 0.6);
            background: rgba(255, 255, 255, 0.15);
            transform: rotate(45deg);
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.25);
        }

        .shape.triangle {
            width: 0;
            height: 0;
            border-left: 30px solid transparent;
            border-right: 30px solid transparent;
            border-bottom: 50px solid rgba(255, 255, 255, 0.25);
            filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
        }

        .shape:nth-child(1) { 
            top: 15%; 
            left: 10%; 
            animation-delay: 0s;
            animation-duration: 20s;
        }
        .shape:nth-child(2) { 
            top: 25%; 
            right: 15%; 
            animation-delay: -5s;
            animation-duration: 18s;
        }
        .shape:nth-child(3) { 
            top: 60%; 
            left: 20%; 
            animation-delay: -10s;
            animation-duration: 22s;
        }
        .shape:nth-child(4) { 
            top: 45%; 
            right: 25%; 
            animation-delay: -3s;
            animation-duration: 16s;
        }
        .shape:nth-child(5) { 
            top: 70%; 
            right: 10%; 
            animation-delay: -7s;
            animation-duration: 25s;
        }
        .shape:nth-child(6) { 
            top: 30%; 
            left: 70%; 
            animation-delay: -12s;
            animation-duration: 19s;
        }
        .shape:nth-child(7) { 
            top: 80%; 
            left: 60%; 
            animation-delay: -15s;
            animation-duration: 21s;
        }
        .shape:nth-child(8) { 
            top: 10%; 
            left: 50%; 
            animation-delay: -8s;
            animation-duration: 24s;
        }

        @keyframes floatShape {
            0%, 100% { 
                transform: translateY(0px) translateX(0px) scale(1);
                opacity: 0.25;
            }
            25% { 
                transform: translateY(-40px) translateX(30px) scale(1.2);
                opacity: 0.45;
            }
            50% { 
                transform: translateY(-20px) translateX(-25px) scale(0.8);
                opacity: 0.3;
            }
            75% { 
                transform: translateY(-50px) translateX(20px) scale(1.1);
                opacity: 0.4;
            }
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) translateX(0px); }
            25% { transform: translateY(-10px) translateX(5px); }
            50% { transform: translateY(0px) translateX(-5px); }
            75% { transform: translateY(10px) translateX(2px); }
        }

        .hero-content {
            text-align: center;
            color: white;
            z-index: 2;
            position: relative;
            max-width: 1000px;
            padding: 0 20px;
        }

        /* Hero Title με διορθωμένη mobile εμφάνιση */
        .hero-title {
            font-size: clamp(2.2rem, 4vw, 3.5rem);
            font-weight: 500;
            margin-bottom: 1rem;
            opacity: 0;
            transform: translateY(30px);
            animation: slideInUp 1s ease-out 0.8s forwards;
            transition: all 1.2s cubic-bezier(0.25, 0.8, 0.25, 1);
            overflow: hidden;
            white-space: nowrap;
        }

        .hero-title .letter {
            display: inline-block;
            animation: letterFloat 3s ease-in-out infinite;
        }

        .hero-title .letter:nth-child(1) { animation-delay: 0s; }
        .hero-title .letter:nth-child(2) { animation-delay: 0.1s; }
        .hero-title .letter:nth-child(3) { animation-delay: 0.2s; }
        .hero-title .letter:nth-child(4) { animation-delay: 0.3s; }
        .hero-title .letter:nth-child(5) { animation-delay: 0.4s; }
        .hero-title .letter:nth-child(6) { animation-delay: 0.5s; }
        .hero-title .letter:nth-child(7) { animation-delay: 0.6s; }
        .hero-title .letter:nth-child(8) { animation-delay: 0.7s; }
        .hero-title .letter:nth-child(9) { animation-delay: 0.8s; }
        .hero-title .letter:nth-child(10) { animation-delay: 0.9s; }
        .hero-title .letter:nth-child(11) { animation-delay: 1s; }
        .hero-title .letter:nth-child(12) { animation-delay: 1.1s; }
        .hero-title .letter:nth-child(13) { animation-delay: 1.2s; }
        .hero-title .letter:nth-child(14) { animation-delay: 1.3s; }
        .hero-title .letter:nth-child(15) { animation-delay: 1.4s; }
        .hero-title .letter:nth-child(16) { animation-delay: 1.5s; }
        .hero-title .letter:nth-child(17) { animation-delay: 1.6s; }
        .hero-title .letter:nth-child(18) { animation-delay: 1.7s; }
        .hero-title .letter:nth-child(19) { animation-delay: 1.8s; }
        .hero-title .letter:nth-child(20) { animation-delay: 1.9s; }
        .hero-title .letter:nth-child(21) { animation-delay: 2s; }
        .hero-title .letter:nth-child(22) { animation-delay: 2.1s; }
        .hero-title .letter:nth-child(23) { animation-delay: 2.2s; }
        .hero-title .letter:nth-child(24) { animation-delay: 2.3s; }
        .hero-title .letter:nth-child(25) { animation-delay: 2.4s; }
        .hero-title .letter:nth-child(26) { animation-delay: 2.5s; }
        .hero-title .letter:nth-child(27) { animation-delay: 2.6s; }

        @keyframes letterFloat {
            0%, 100% { 
                transform: translateY(0px);
                text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
            }
            50% { 
                transform: translateY(-8px);
                text-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
            }
        }

        /* Πιο smooth animation για mobile */
        @keyframes letterFloatMobile {
            0%, 100% { 
        transform: translateX(0px) scale(1);
        text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
            }
            50% { 
        transform: translateX(3px) scale(1.05);
        text-shadow: 0 0 16px rgba(255, 255, 255, 0.7);
            }
        }

        .hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            font-weight: 400;
            opacity: 0.95;
            margin-bottom: 3rem;
            opacity: 0;
            transform: translateY(30px);
            animation: slideInUp 1s ease-out 1.2s forwards;
            transition: all 1.2s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        .fade-out-up {
            animation: smoothFadeOutUp 1.5s cubic-bezier(0.25, 0.8, 0.25, 1) forwards !important;
        }

        @keyframes smoothFadeOutUp {
            0% {
                opacity: 1;
                transform: translateY(0px);
            }
            50% {
                opacity: 0.5;
                transform: translateY(-25px);
            }
            100% {
                opacity: 0;
                transform: translateY(-80px);
                visibility: hidden;
            }
        }

        @keyframes slideInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Scroll Down Arrow */
        .scroll-down-arrow {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            cursor: pointer;
            opacity: 0;
            animation: arrowAppear 1s ease-out 3s forwards, arrowBounce 2s ease-in-out 4s infinite;
            transition: all 0.3s ease;
        }

        .scroll-down-arrow:hover {
            transform: translateX(-50%) scale(1.2);
        }

        .arrow-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .arrow-text {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .arrow-icon {
            width: 30px;
            height: 30px;
            border: 2px solid rgba(255, 255, 255, 0.8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
        }

        .arrow-icon::after {
            content: '';
            width: 10px;
            height: 10px;
            border: 2px solid rgba(255, 255, 255, 0.9);
            border-top: none;
            border-left: none;
            transform: rotate(45deg);
            margin-top: -2px;
        }

        @keyframes arrowAppear {
            to {
                opacity: 1;
            }
        }

        @keyframes arrowBounce {
            0%, 100% { 
                transform: translateX(-50%) translateY(0px);
            }
            50% { 
                transform: translateX(-50%) translateY(-10px);
            }
        }

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

        /* Services Section */
        .services {
            padding: 80px 0 120px 0;
            background: var(--streamline-white);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
        }

        .service-card {
            background: var(--streamline-white);
            border-radius: 20px;
            padding: 45px 35px;
            box-shadow: var(--shadow-teal);
            border: 2px solid var(--border-color);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            opacity: 1;
            transform: translateY(0);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--streamline-teal), var(--streamline-light-teal));
            transition: left 0.6s ease;
        }

        .service-card:hover::before {
            left: 0;
        }

        .service-card:hover {
            transform: translateY(-12px);
            box-shadow: var(--shadow-teal-large);
            border-color: var(--streamline-teal);
        }

        .service-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #000000;
            margin-bottom: 18px;
            transition: color 0.3s ease;
        }

        .service-card:hover .service-title {
            color: var(--streamline-teal);
        }

        .service-description {
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 1rem;
        }

        /* About Section */
        .about {
            padding: 120px 0;
            background: var(--streamline-bg);
        }

        .about-content {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
            position: relative;
        }

        .about-title {
            font-size: 2.8rem;
            font-weight: 700;
            color: #000000;
            display: inline-block;
            padding: 25px 40px;
            border-radius: 20px;
            position: relative;
            background: linear-gradient(135deg, var(--streamline-white), #f8fdfc);
            border: 3px solid var(--streamline-teal);
            box-shadow: var(--shadow-teal-medium);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 40px;
        }

        .about-title::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--streamline-teal), var(--streamline-light-teal));
            border-radius: 2px;
        }

        .about-text {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 25px;
            text-align: left;
        }

        .about-text.highlight {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1.2rem;
        }

        /* Enhanced Footer */
        .footer {
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--streamline-accent) 100%);
            color: white;
            padding: 80px 0 40px;
        }

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

        .footer-contact h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--streamline-light-teal);
            margin-right: 20px;
        }

        .footer-contact-items {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            transition: transform 0.3s ease;
            white-space: nowrap;
        }

        .footer-contact-item:hover {
            transform: translateY(-3px);
        }

        .footer-contact-item span {
            width: 25px;
            text-align: center;
        }

        .footer-contact-item a {
            color: white;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-contact-item a:hover {
            color: var(--streamline-light-teal);
        }

        .footer-social {
            display: flex;
            justify-content: center;
            gap: 25px;
            margin: 30px 0;
        }

        .footer-social-icon {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            transition: all 0.3s ease;
            cursor: pointer;
            font-size: 26px;
            text-decoration: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        .footer-social-icon.facebook {
            background: #1877f2;
        }

        .footer-social-icon.facebook::before {
            content: "f";
            font-family: 'Inter', sans-serif;
            font-weight: bold;
            font-style: italic;
        }

        .footer-social-icon.linkedin {
            background: #0077b5;
        }

        .footer-social-icon.linkedin::before {
            content: "in";
            font-family: 'Inter', sans-serif;
            font-weight: bold;
            font-size: 20px;
        }

        .footer-social-icon:hover {
            transform: scale(1.15) translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* Scroll Progress Bar */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0%;
            height: 4px;
            background: linear-gradient(90deg, var(--streamline-teal), var(--streamline-light-teal));
            z-index: 9999;
            transition: width 0.3s ease;
        }

        /* Enhanced Contact Modal */
        .contact-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .contact-modal.show {
            opacity: 1;
            visibility: visible;
        }

        .contact-modal-content {
            background: var(--streamline-white);
            border-radius: 20px;
            padding: 40px;
            max-width: 500px;
            width: 90%;
            border: 3px solid var(--streamline-teal);
            box-shadow: var(--shadow-teal-large);
            transform: scale(0.8);
            transition: transform 0.3s ease;
        }

        .contact-modal.show .contact-modal-content {
            transform: scale(1);
        }

        .contact-modal-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 30px;
        }

        .contact-modal-info {
            text-align: center;
        }

        .contact-modal-item {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            margin: 20px 0;
            font-size: 1.2rem;
            color: var(--text-secondary);
        }

        .contact-modal-item a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .contact-modal-item a:hover {
            color: var(--streamline-teal);
        }

        .social-media {
            margin-top: 20px;
            display: flex;
            justify-content: center;
            gap: 20px;
        }

        .social-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            transition: all 0.3s ease;
            cursor: pointer;
            font-size: 24px;
            text-decoration: none;
        }

        .social-icon.facebook {
            background: #1877f2;
        }

        .social-icon.facebook::before {
            content: "f";
            font-family: 'Inter', sans-serif;
            font-weight: bold;
            font-style: italic;
        }

        .social-icon.linkedin {
            background: #0077b5;
        }

        .social-icon.linkedin::before {
            content: "in";
            font-family: 'Inter', sans-serif;
            font-weight: bold;
            font-size: 18px;
        }

        .social-icon:hover {
            transform: scale(1.1);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        .contact-modal-close {
            position: absolute;
            top: 15px;
            right: 20px;
            background: none;
            border: none;
            font-size: 28px;
            color: var(--streamline-teal);
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .contact-modal-close:hover {
            transform: scale(1.2);
        }

        /* Chatbot Styles */
        .chatbot-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1500;
        }

        .chatbot-toggle {
            width: 60px;
            height: 60px;
            background: var(--streamline-teal);
            border-radius: 50%;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(78, 205, 196, 0.4);
            transition: all 0.3s ease;
            animation: chatbotPulse 3s ease-in-out infinite;
        }

        .chatbot-toggle:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(78, 205, 196, 0.6);
        }

        .chatbot-toggle::before {
            content: "💬";
            font-size: 24px;
        }

        .chatbot-window {
            position: absolute;
            bottom: 80px;
            right: 0;
            width: 350px;
            height: 500px;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            transform: scale(0) translateY(20px);
            opacity: 0;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            overflow: hidden;
            border: 2px solid var(--streamline-teal);
        }

        .chatbot-window.show {
            transform: scale(1) translateY(0);
            opacity: 1;
        }

        .chatbot-header {
            background: var(--streamline-teal);
            color: white;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .chatbot-header h4 {
            margin: 0;
            font-size: 1.1rem;
            flex: 1;
        }

        .chatbot-close {
            background: none;
            border: none;
            color: white;
            font-size: 18px;
            cursor: pointer;
            padding: 5px;
            border-radius: 3px;
            transition: background 0.3s ease;
        }

        .chatbot-close:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .chatbot-messages {
            height: 310px;
            overflow-y: auto;
            padding: 20px;
            background: #f9f9f9;
        }

        .message {
            margin-bottom: 15px;
            display: flex;
            flex-direction: column;
        }

        .message.bot {
            align-items: flex-start;
        }

        .message.user {
            align-items: flex-end;
        }

        .message-bubble {
            max-width: 70%;
            padding: 10px 15px;
            border-radius: 18px;
            font-size: 0.9rem;
            line-height: 1.4;
        }

        .message.bot .message-bubble {
            background: var(--streamline-teal);
            color: white;
            border-bottom-left-radius: 5px;
        }

        .message.user .message-bubble {
            background: #e3e3e3;
            color: var(--text-primary);
            border-bottom-right-radius: 5px;
        }

        .chatbot-quick-replies {
            padding: 15px 20px 15px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            background: white;
            min-height: 70px;
            align-content: flex-start;
        }

        .quick-reply {
            padding: 10px 15px;
            background: var(--streamline-bg);
            border: 1px solid var(--streamline-teal);
            border-radius: 25px;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.3s ease;
            color: var(--streamline-teal);
            font-weight: 500;
        }

        .quick-reply:hover {
            background: var(--streamline-teal);
            color: white;
            transform: translateY(-2px);
        }

        .chatbot-input {
            padding: 15px 20px;
            background: white;
            border-top: 1px solid #e3e3e3;
            display: flex;
            gap: 10px;
        }

        .chatbot-input input {
            flex: 1;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 20px;
            outline: none;
            font-size: 0.9rem;
        }

        .chatbot-input button {
            padding: 10px 15px;
            background: var(--streamline-teal);
            color: white;
            border: none;
            border-radius: 20px;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .chatbot-input button:hover {
            background: var(--streamline-dark-teal);
        }

        @keyframes chatbotPulse {
            0%, 100% {
                transform: scale(1);
                box-shadow: 0 4px 15px rgba(78, 205, 196, 0.4);
            }
            50% {
                transform: scale(1.05);
                box-shadow: 0 6px 20px rgba(78, 205, 196, 0.6);
            }
        }

        /* Responsive Design */
        

        /* Mobile Title & Footer Διορθώσεις */

            .service-card {
                padding: 35px 25px;
            }

            .about-title {
                font-size: 1.8rem;
                padding: 20px 25px;
            }

            /* Mobile Title - ΜΙΑ ΣΕΙΡΑ */
            .hero-title {
                font-size: clamp(1.1rem, 4.5vw, 1.8rem) !important;
                white-space: nowrap !important;
                line-height: 1.3;
                padding: 0 10px;
                word-spacing: 0.05em;
                margin-bottom: 1.5rem;
                text-align: center;
                max-width: 100%;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            
            /* Πιο smooth κίνηση για mobile */
            .hero-title .letter {
                animation: letterFloatMobile 5s ease-in-out infinite !important;
            }
            
            /* Μικρότερα delays για smoother εφέ */
            .hero-title .letter:nth-child(1) { animation-delay: 0s !important; }
            .hero-title .letter:nth-child(2) { animation-delay: 0.08s !important; }
            .hero-title .letter:nth-child(3) { animation-delay: 0.16s !important; }
            .hero-title .letter:nth-child(4) { animation-delay: 0.24s !important; }
            .hero-title .letter:nth-child(5) { animation-delay: 0.32s !important; }
            .hero-title .letter:nth-child(6) { animation-delay: 0.4s !important; }
            .hero-title .letter:nth-child(7) { animation-delay: 0.48s !important; }
            .hero-title .letter:nth-child(8) { animation-delay: 0.56s !important; }
            .hero-title .letter:nth-child(9) { animation-delay: 0.64s !important; }
            .hero-title .letter:nth-child(10) { animation-delay: 0.72s !important; }
            .hero-title .letter:nth-child(11) { animation-delay: 0.8s !important; }
            .hero-title .letter:nth-child(12) { animation-delay: 0.88s !important; }
            .hero-title .letter:nth-child(13) { animation-delay: 0.96s !important; }
            .hero-title .letter:nth-child(14) { animation-delay: 1.04s !important; }
            .hero-title .letter:nth-child(15) { animation-delay: 1.12s !important; }
            .hero-title .letter:nth-child(16) { animation-delay: 1.2s !important; }
            .hero-title .letter:nth-child(17) { animation-delay: 1.28s !important; }
            .hero-title .letter:nth-child(18) { animation-delay: 1.36s !important; }
            .hero-title .letter:nth-child(19) { animation-delay: 1.44s !important; }
            .hero-title .letter:nth-child(20) { animation-delay: 1.52s !important; }
            .hero-title .letter:nth-child(21) { animation-delay: 1.6s !important; }
            .hero-title .letter:nth-child(22) { animation-delay: 1.68s !important; }
            .hero-title .letter:nth-child(23) { animation-delay: 1.76s !important; }
            .hero-title .letter:nth-child(24) { animation-delay: 1.84s !important; }
            .hero-title .letter:nth-child(25) { animation-delay: 1.92s !important; }
            .hero-title .letter:nth-child(26) { animation-delay: 2s !important; }
            .hero-title .letter:nth-child(27) { animation-delay: 2.08s !important; }
            .hero-title .letter:nth-child(28) { animation-delay: 2.16s !important; }
            .hero-title .letter:nth-child(29) { animation-delay: 2.24s !important; }

            /* Footer mobile - στιχισμένα αριστερά */
            .footer-contact {
                flex-direction: column;
                gap: 25px;
                text-align: left !important;
                align-items: flex-start !important;
            }

            .footer-contact h3 {
                margin-right: 0;
                margin-bottom: 15px;
                text-align: left;
            }

            .footer-contact-items {
                flex-direction: column;
                gap: 15px;
                align-items: flex-start !important;
                text-align: left;
                width: 100%;
            }
            
            .footer-contact-item {
                justify-content: flex-start !important;
                text-align: left;
                width: 100%;
            }

            /* Mobile adjustments για menu button */
            .menu-text-center {
                font-size: 10px;
                padding: 6px 12px;
                bottom: 18px;
                letter-spacing: 1px;
            }

            .hero-logo-center.scrolled .menu-text-center {
                font-size: 5px;
                bottom: 8px;
                padding: 3px 6px;
                letter-spacing: 0.5px;
            }

            .logo-button-center {
                width: 220px;
                height: 220px;
            }

            .logo-image-center {
                width: 200px;
                height: 200px;
            }

            .center-menu-circle {
                width: 80px;
                height: 80px;
            }

            .center-menu-items {
                top: -100px;
                gap: 18px;
            }

            .center-menu-icon {
                font-size: 24px;
            }

            .center-menu-text {
                font-size: 10px;
            }

            .hero-logo-center.scrolled .logo-button-center {
                width: 80px;
                height: 80px;
                border: 2.0px solid var(--streamline-teal) !important;
            }

            .hero-logo-center.scrolled .logo-image-center {
                width: 70px;
                height: 70px;
            
            }

            .hero-logo-center.scrolled .center-menu-items {
                top: 90px;
                gap: 10px;
            }

            .hero-logo-center.scrolled .center-menu-circle {
                width: 60px;
                height: 60px;
            }

            .hero-logo-center.scrolled .center-menu-icon {
                font-size: 18px;
            }

            .hero-logo-center.scrolled .center-menu-text {
                font-size: 7px;
            }

            .scroll-down-arrow {
                bottom: 60px;
            }

            .arrow-text {
                font-size: 0.8rem;
            }

            .arrow-icon {
                width: 28px;
                height: 28px;
            }

            /* Mobile Chatbot - μεγαλύτερος χώρος */
            .chatbot-window {
                width: 320px;
                height: 480px;
                right: -10px;
            }

            .chatbot-container {
                bottom: 10px;
                right: 10px;
            }

            .chatbot-messages {
                height: 290px;
            }

            .chatbot-quick-replies {
                min-height: 85px;
                padding: 18px 15px;
                gap: 8px;
            }

            .quick-reply {
                padding: 12px 16px;
                font-size: 0.8rem;
                border-radius: 20px;
            }
        

            
            /* Μικρότερα mobile */
            .hero-title {
                font-size: clamp(1rem, 4vw, 1.6rem) !important;
                padding: 0 5px;
                word-spacing: 0.02em;
            }
            
            .about-title {
                font-size: 1.5rem;
            }
            
            .footer-social {
                gap: 20px;
            }
            
            .footer-social-icon {
                width: 50px;
                height: 50px;
                font-size: 22px;
            }

            .footer-contact-items {
                gap: 12px;
            }

            .footer-contact-item {
                font-size: 1rem;
            }

            /* Very small mobile chatbot */
            .chatbot-window {
                width: 290px;
                height: 450px;
                right: -15px;
            }

            .chatbot-quick-replies {
                min-height: 90px;
                padding: 20px 12px;
            }

            .quick-reply {
                padding: 10px 14px;
                font-size: 0.75rem;
            }