:root {
            --dark-green: #0a2e26;
            --accent-yellow: #fdbd10;
            --muted-green: #101920;
            --white: #ffffff;
            --gray-text: #888888;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Poppins', sans-serif;
        }

        body {
            background-color: var(--dark-green);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            overflow: hidden;
        }

        /* Decoración de fondo círculos */
        .bg-circle {
            position: absolute;
            background-color: var(--accent-yellow);
            border-radius: 50%;
            z-index: 0;
        }
        .c1 { width: 400px; height: 400px; top: -100px; right: -100px; opacity: 0.8; }
        .c2 { width: 100px; height: 100px; bottom: 50px; left: 50px; }
        .c3 { width: 40px; height: 40px; bottom: 150px; left: 20px; }

        /* Contenedor Principal */
        .container {
            width: 380px;
            height: 750px;
            background: var(--white);
            border-radius: 40px;
            position: relative;
            z-index: 10;
            overflow: hidden;
            box-shadow: 0 25px 50px rgba(0,0,0,0.3);
        }

        .form-section {
            position: absolute;
            width: 100%;
            height: 100%;
            transition: transform 0.5s ease-in-out, opacity 0.5s ease;
            background: var(--white);
            display: flex;
            flex-direction: column;
        }

        /* Encabezados */
        .header {
            height: 30%;
            background: linear-gradient(rgba(10, 46, 38, 0.7), rgba(10, 46, 38, 0.7)), 
                        url('https://images.unsplash.com/photo-1517836357463-d25dfeac3438?auto=format&fit=crop&w=800&q=80');
            background-size: cover;
            background-position: center;
            border-bottom-left-radius: 60px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            padding: 20px;
            position: relative;
        }

        .logo-circle {
            width: 80px;
            height: 80px;
            background: var(--accent-yellow);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        .logo-icon {
            width: 30px;
            height: 30px;
            border-left: 6px solid white;
            border-right: 6px solid white;
            transform: skewX(-15deg);
        }

        .skip-btn {
            position: absolute;
            top: 30px;
            right: 30px;
            font-size: 14px;
            cursor: pointer;
        }

        .back-btn {
            position: absolute;
            top: 30px;
            left: 20px;
            background: var(--accent-yellow);
            color: var(--dark-green);
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            text-decoration: none;
            font-weight: bold;
            cursor: pointer;
        }

        /* Cuerpo del Formulario */
        .content {
            padding: 40px 30px;
            flex-grow: 1;
        }

        .input-group {
            margin-bottom: 25px;
            border-bottom: 1px solid #eee;
            position: relative;
        }

        .input-group label {
            display: block;
            font-size: 12px;
            color: var(--gray-text);
            margin-bottom: 5px;
        }

        .input-group input {
            width: 100%;
            border: 1px solid #141e2d;
            border-radius: 8px;
            outline: none;
            padding: 8px 0;
            font-size: 15px;
            font-weight: 600;
            color: #333;
        }

        .options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            margin-top: -10px;
            margin-bottom: 30px;
        }

        .checkbox-container {
            display: flex;
            align-items: center;
            color: var(--gray-text);
        }

        .forgot-pass {
            color: #000;
            text-decoration: none;
            font-weight: 600;
        }

        /* Botones */
        .btn-primary {
            width: 100%;
            background-color: var(--muted-green);
            color: white;
            border: none;
            padding: 15px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            cursor: pointer;
            transition: background 0.3s;
        }

        .btn-primary:hover {
            background-color: var(--dark-green);
        }

        .footer-text {
            text-align: center;
            margin-top: 30px;
            font-size: 13px;
            color: #333;
        }

        .footer-text span {
            font-weight: 600;
            cursor: pointer;
            text-transform: uppercase;
        }

        /* Control de Visibilidad */
        .hidden {
            transform: translateX(100%);
            opacity: 0;
            pointer-events: none;
        }

        .active {
            transform: translateX(0);
            opacity: 1;
            z-index: 20;
        }

        /* Ajuste específico para Registro (scroll si es necesario) */
        #register-form .content {
            overflow-y: auto;
            padding-top: 20px;
        }
        
        #register-form .header {
            height: 150px;
            border-bottom-left-radius: 40px;
            align-items: flex-start;
            padding-left: 60px;
        }