/* ================================================
           THOPOS DRONE - STILI PRINCIPALI
           Basati sul design moderno di Thopos 2025
        ================================================ */

        /* Reset e Base */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(26, 51, 38, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            transition: all 0.3s ease;
            border-bottom: 1px solid white;
        }

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

        .logo {
            height: 40px;
            filter: drop-shadow(0 0 10px rgba(0, 255, 136, 0.3));
            transition: all 0.3s ease;
        }

        .logo:hover {
            filter: drop-shadow(0 0 15px rgba(0, 255, 136, 0.5));
            transform: scale(1.05);
        }

        .nav-container a {
            text-decoration: none;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-menu a {
            color: white;
            text-decoration: none;
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-menu a:hover {
            color: #00ff88;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #00ff88, #00cc66);
            transition: width 0.3s ease;
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        /* Menu Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 5px;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: white;
            margin: 3px 0;
            transition: 0.3s;
            border-radius: 2px;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(-45deg) translate(-5px, 6px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(45deg) translate(-5px, -6px);
        }

        /* Hero Section */
        .hero {
            height: 80vh;
            background: linear-gradient(135deg, #1a3326 0%, #2d5942 50%, #0f4c2e 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .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 0 100 100"><path d="M0,0 L50,50 L100,0 Z" fill="none" stroke="%23ffffff10" stroke-width="0.5"/><path d="M0,50 L50,100 L100,50 Z" fill="none" stroke="%23ffffff10" stroke-width="0.5"/></svg>') repeat;
            opacity: 0.1;
            animation: float 20s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-20px) rotate(2deg); }
        }

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

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            background: linear-gradient(45deg, #00ff88, #ffffff, #00cc66);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: glow 3s ease-in-out infinite alternate;
            font-weight: bold;
        }

        @keyframes glow {
            from { filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.5)); }
            to { filter: drop-shadow(0 0 30px rgba(0, 255, 136, 0.8)); }
        }

        .hero-subtitle {
            font-size: 1.4rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            font-weight: 300;
        }

        .hero-description {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            opacity: 0.8;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        /* Container e Layout */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .section {
            padding: 6rem 0;
        }

        .section-alt {
            background: #f8f9fa;
        }

        .section-title {
            text-align: center;
            font-size: 2.8rem;
            margin-bottom: 1rem;
            color: #2d5942;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.3rem;
            color: #666;
            margin-bottom: 4rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Step Cards */
        .steps-container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 4rem;
            margin-top: 4rem;
        }

        .step-card {
            background: white;
            border-radius: 20px;
            padding: 3rem;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border-left: 8px solid #00ff88;
            position: relative;
        }

        .step-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
        }

        .step-number {
            position: absolute;
            top: -25px;
            left: 3rem;
            width: 60px;
            height: 60px;
            background: linear-gradient(45deg, #00ff88, #00cc66);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            font-weight: bold;
            box-shadow: 0 8px 25px rgba(0, 255, 136, 0.3);
        }

        .step-title {
            font-size: 1.8rem;
            color: #2d5942;
            margin-bottom: 1.5rem;
            margin-top: 1rem;
            font-weight: bold;
        }

        .step-description {
            font-size: 1.1rem;
            color: #666;
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        /* Image Container per Step 1 e Step 3 */
        .image-container {
            margin-top: 2rem;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            background: #000;
        }

        .image-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
        }

        .step-image {
            width: 650px;
            height: 365px;
            object-fit: cover;
            display: block;
            margin: 0 auto;
            border-radius: 15px;
        }

        .image-caption {
            text-align: center;
            padding: 1.5rem;
            background: linear-gradient(135deg, #2d5942, #1a3326);
            color: white;
            font-weight: bold;
            font-size: 1.1rem;
            border-bottom-left-radius: 15px;
            border-bottom-right-radius: 15px;
        }
        .video-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
            margin-top: 2rem;
        }

        .video-container {
            position: relative;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            background: #000;
        }

        .video-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
        }

        .video-iframe {
            width: 650px;
            height: 365px;
            border: none;
            border-radius: 15px;
            display: block;
            margin: 0 auto;
        }

        .video-title {
            text-align: center;
            padding: 1.5rem;
            background: linear-gradient(135deg, #2d5942, #1a3326);
            color: white;
            font-weight: bold;
            font-size: 1.1rem;
            border-bottom-left-radius: 15px;
            border-bottom-right-radius: 15px;
        }

        /* Features Grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 3rem;
            margin-top: 4rem;
        }

        .feature-card {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            color: #00ff88;
        }

        .feature-title {
            font-size: 1.3rem;
            color: #2d5942;
            margin-bottom: 1rem;
            font-weight: bold;
        }

        .feature-text {
            color: #666;
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #2d5942, #1a3326);
            color: white;
            text-align: center;
            padding: 6rem 0;
        }

        .cta-title {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
        }

        .cta-description {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            opacity: 0.9;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .cta-button {
            display: inline-block;
            padding: 1.2rem 2.5rem;
            background: linear-gradient(45deg, #00ff88, #00cc66);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
        }

        .cta-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 255, 136, 0.5);
        }

        .cta-button.secondary {
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .cta-button.secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.5);
        }

        /* Footer */
        .footer {
            background: #1a3326;
            color: white;
            padding: 3rem 0 1rem;
            text-align: center;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #00ff88;
            text-decoration: none;
            transition: opacity 0.3s ease;
        }

        .footer-links a:hover {
            opacity: 0.8;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin: 2rem 0;
        }

        .social-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: all 0.3s ease;
            padding: 0.5rem;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
        }

        .social-links a:hover {
            color: #00ff88;
            background: rgba(0, 255, 136, 0.1);
            transform: translateY(-2px);
        }

        .copyright {
            font-size: 1.1rem;
            font-weight: bold;
            color: #00ff88;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(0, 255, 136, 0.3);
        }

        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Mobile Responsive */
        @media (max-width: 768px) {
            /* Menu Mobile */
            .nav-menu {
                position: fixed;
                top: 77px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 77px);
                background: rgba(26, 51, 38, 0.98);
                backdrop-filter: blur(10px);
                flex-direction: column;
                justify-content: flex-start;
                align-items: center;
                gap: 2rem;
                padding-top: 3rem;
                transition: left 0.3s ease;
            }

            .nav-menu.active {
                left: 0;
            }

            .nav-menu li {
                opacity: 0;
                transform: translateX(-50px);
                transition: all 0.3s ease;
            }

            .nav-menu.active li {
                opacity: 1;
                transform: translateX(0);
            }

            .nav-menu.active li:nth-child(1) { transition-delay: 0.1s; }
            .nav-menu.active li:nth-child(2) { transition-delay: 0.2s; }
            .nav-menu.active li:nth-child(3) { transition-delay: 0.3s; }
            .nav-menu.active li:nth-child(4) { transition-delay: 0.4s; }
            .nav-menu.active li:nth-child(5) { transition-delay: 0.5s; }
            .nav-menu.active li:nth-child(6) { transition-delay: 0.6s; }

            .nav-menu a {
                font-size: 1.5rem;
                padding: 1rem;
            }

            .hamburger {
                display: flex;
            }

             .hero {
                padding-top: 100px; /* Maggiore padding su mobile per compensare l'header */
                height: 85vh; /* Aumenta leggermente l'altezza per compensare il padding */
            }

            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero-subtitle {
                font-size: 1.2rem;
            }
            
            .hero-description {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2.2rem;
            }
            
            .step-card {
                padding: 2rem;
            }
            
            .step-number {
                left: 2rem;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .step-image {
                width: 100%;
                max-width: 560px;
                height: 315px;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }
            
            .step-card {
                padding: 1.5rem;
            }
            
            .step-number {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
            }
            
            .step-image {
                width: 100%;
                height: 250px;
            }
        }

        @media (max-width: 700px) {
            .video-iframe {
                width: 100%;
                max-width: 100%;
                height: 280px;
            }
            
            .step-image {
                width: 100%;
                max-width: 100%;
                height: 280px;
            }
        }