* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Oswald';
        }

        :root {
            --primary: #8B0000;
            --primary-light: #A52A2A;
            --primary-dark: #5C0000;
            --secondary: #1a1a1a;
            --accent: #FFD700;
            --text-light: #ffffff;
            --text-dark: #2c2c2c;
            --bg-light: #f8f8f8;
            --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-dark);
            overflow-x: hidden;
            background: var(--bg-light);
        }

       /* Header */
        header {
            position: fixed;
            top: 0;
            width: 100%;
            padding: 1rem 5%;
            background: #ffffff;
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            transition: var(--transition);
        }

        header.scrolled {
            padding: 0.5rem 5%;
            background: white;
        }

        .navbar {
           width: 100%;
           height: 60px;
           max-width: 1200px;
           margin: 0 auto;
           display: flex;
           align-items: center;
           justify-content: space-between;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo i {
            font-size: 2rem;
        }

        /* Botão Hamburguer */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
            z-index: 1001;
        }

        .hamburger span {
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            transition: var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(8px, 8px);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        .mobile-only {
            display: none;
        }

        .desktop-only {
            display: block;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .cta-btn {
            padding: 0.8rem 2rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: white;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(139, 0, 0, 0.3);
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(139, 0, 0, 0.4);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.2) 0%, transparent 70%);
            top: -250px;
            right: -250px;
            animation: float 8s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(74, 144, 200, 0.3) 0%, transparent 70%);
            bottom: -200px;
            left: -200px;
            animation: float 6s ease-in-out infinite reverse;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            50% { transform: translateY(-30px) rotate(10deg); }
        }

        .hero-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text h1 {
            font-size: 4rem;
            color: white;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .highlight {
            color: var(--accent);
            position: relative;
            text-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
        }

        .hero-text p {
            font-size: 1.3rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 1rem 2.5rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(139, 0, 0, 0.4);
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 30px rgba(139, 0, 0, 0.5);
        }

        .btn-secondary {
            padding: 1rem 2.5rem;
            background: transparent;
            color: white;
            border: 2px solid white;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }

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

        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .choir-illustration {
            width: 100%;
            max-width: 500px;
            height: auto;
            filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.3));
        }

        /* Features Section */
        .features {
            padding: 6rem 5%;
            background: white;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header h2 {
            font-size: 3rem;
            color: var(--text-dark);
            margin-bottom: 1rem;
        }

        .section-header p {
            font-size: 1.2rem;
            color: #666;
        }

        .features-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .feature-card {
            background: var(--bg-light);
            padding: 2.5rem;
            border-radius: 20px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary), var(--purple));
            transform: scaleX(0);
            transition: var(--transition);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
        }

        .feature-icon {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

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

       /* Technique Section */
        .technique {
            padding: 6rem 5%;
            background: linear-gradient(135deg, var(--secondary) 0%, #2d2d2d 100%);
            color: white;
        }

        .technique .section-header h2,
        .technique .section-header p {
            color: white;
        }

        .technique-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .technique-text h3 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
            color: var(--accent);
        }

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

        .technique-list li {
            padding: 1rem 0;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .technique-list i {
            color: var(--accent);
            font-size: 1.5rem;
            margin-top: 0.3rem;
        }

        .technique-list strong {
            color: var(--accent);
            display: block;
            margin-bottom: 0.5rem;
        }

        /* Voices Section */
        .voices {
            padding: 6rem 5%;
            background: var(--bg-light);
        }

        .voices-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 3rem;
        }

        .voice-card {
            background: white;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .voice-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary), var(--purple));
            transform: scaleX(0);
            transition: var(--transition);
        }

        .voice-card:hover::after {
            transform: scaleX(1);
        }

        .voice-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
        }

        .voice-badge {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: white;
            border-radius: 50px;
            font-weight: bold;
            margin-bottom: 1.5rem;
        }

        .voice-card h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .voice-card p {
            color: #666;
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .voice-range {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem;
            background: var(--bg-light);
            border-radius: 10px;
            margin-top: 1rem;
        }

        .voice-range i {
            color: var(--primary);
            font-size: 1.5rem;
        }

        .voice-range strong {
            color: var(--primary);
        }


        /* Repertorio */
        .repertoire {
            padding: 6rem 5%;
            background: var(--bg-light);
        }

        .repertoire-list {
            max-width: 1000px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .repertoire-item {
            background: white;
            padding: 1.5rem;
            border-radius: 15px;
            display: flex;
            align-items: center;
            gap: 1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .repertoire-item:hover {
            transform: translateX(10px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .repertoire-item i {
            font-size: 1.8rem;
            color: var(--primary);
            min-width: 40px;
        }

        .repertoire-item div h4 {
            color: var(--text-dark);
            margin-bottom: 0.3rem;
        }

        .repertoire-item div p {
            color: #666;
            font-size: 0.9rem;
        }

        /* CTA Section */
        .cta-section {
            padding: 6rem 5%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: white;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 3rem;
            margin-bottom: 1.5rem;
        }

        .cta-section p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        /*Professor*/

        .teacher-image {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 1.5rem;
            border: 5px solid white;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }

        /* Footer */
        footer {
            background: var(--secondary);
            color: white;
            padding: 4rem 5% 2rem;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }

        .footer-section h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--text-light);
        }

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            text-decoration: none;
            display: block;
            transition: var(--transition);
        }

        .footer-section a:hover {
            color: white;
            padding-left: 5px;
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .social-links a {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .social-links a:hover {
            background: var(--accent);
            transform: translateY(-3px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
        }

       .navbar .toggle_btn{
            color: #000;
            font-size: 1.5rem;
            cursor: pointer;
            display: none;
        }

        .dropdown_menu{
        display: none;
        position: absolute;
        right: 2rem;
        height: 0;
        top: 60px;
        width: 300px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(15px);
        border-radius: 10px;
        overflow: hidden;
        transition: height .2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        z-index: 999; 
}

        .dropdown_menu.open{
        height: 300px; 
}

        .dropdown_menu li{
        padding: 0.7rem;
        display: flex;
        align-items: center;
        justify-content: center;
        list-style: none; 
}

        .dropdown_menu li a{
        color: var(--text-dark);
        text-decoration: none;
        width: 100%;
        text-align: center;
}

        .dropdown_menu .cta-btn{
            width: 100%;
            display: flex;
            justify-content: center;
        }

        ::marker {
        border: none;
        text-decoration: none;
        color: transparent;
        }

        /* Responsive */
        @media (max-width: 992px) {
           .navbar .nav-links,
            .cta-btn{
                display: none;
            }
            .dropdown_menu{
                display: block;
            }

            .navbar .toggle_btn{
                display: block;
            }

            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
                margin-top: 100px;
            }

            .hero-text h1 {
                font-size: 2.5rem;
            }

            .section-header h2 {
                font-size: 2rem;
            }

            .voices-grid,
            .repertoire-list {
                grid-template-columns: 1fr;
            }
        }